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Rai N, Kailashiya V, Gautam V. Exploring the Protective Effect against 7,12-Dimethylbenz[a]anthracene-Induced Breast Tumors of Palmitoylethanolamide. ACS Pharmacol Transl Sci 2024; 7:97-109. [PMID: 38230286 PMCID: PMC10789129 DOI: 10.1021/acsptsci.3c00188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/26/2023] [Accepted: 10/31/2023] [Indexed: 01/18/2024]
Abstract
Breast cancer remains a global health burden, and the need for effective therapies is of chief importance. The current study explored the in vivo chemoprotective activity of palmitoylethanolamide (PEA) against 7,12-dimethylbenz[a]anthracene (DMBA)-induced breast tumor in rats. Results of noninvasive photoacoustic imaging showed real-time progression in the tumor area and volume in DMBA-induced rats, while there was a reduction in tumor area and volume in PEA-treated tumor-bearing rats. The increase in the average oxygen saturation (sO2 %) and decrease in the average total hemoglobin (HbT %) indicated the PEA-mediated attenuation of hypoxia-induced neovascularization in DMBA-induced rats. Histopathological investigations confirmed the efficacy of PEA in mitigating breast carcinoma, hepatotoxicity and nephrotoxicity driven by DMBA. Moreover, PEA-mediated alterations in the metabolic activity of the tumor microenvironment were evidenced by decreased glucose and lactate dehydrogenase enzyme level in the blood plasma and mammary tissue. PEA also maintained the redox balance by inhibiting nitric oxide level, reducing malondialdehyde (a product of lipid peroxidation), and increasing the level of antioxidant enzyme reduced glutathione. PEA altered the expression of apoptosis-related genes (BAX, P53,BCL-XL, CASPASE-8, and CASPASE-9) and induced the activity of Caspase-3 protein in the mammary tissue of tumor-bearing rats, indicating its apoptosis inducing ability. Taken together, the findings of this study suggest that PEA may have a protective effect against DMBA-induced breast tumors.
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Affiliation(s)
- Nilesh Rai
- Centre
of Experimental Medicine and Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Vikas Kailashiya
- Department
of Pathology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Vibhav Gautam
- Centre
of Experimental Medicine and Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
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2
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Seiler SJ, Neuschler EI, Butler RS, Lavin PT, Dogan BE. Optoacoustic Imaging With Decision Support for Differentiation of Benign and Malignant Breast Masses: A 15-Reader Retrospective Study. AJR Am J Roentgenol 2023; 220:646-658. [PMID: 36475811 DOI: 10.2214/ajr.22.28470] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND. Overlap in ultrasound features of benign and malignant breast masses yields high rates of false-positive interpretations and benign biopsy results. Optoacoustic imaging is an ultrasound-based functional imaging technique that can increase specificity. OBJECTIVE. The purpose of this study was to compare specificity at fixed sensitivity of ultrasound images alone and of fused ultrasound and optoacoustic images evaluated with machine learning-based decision support tool (DST) assistance. METHODS. This retrospective Reader-02 study included 480 patients (mean age, 49.9 years) with 480 breast masses (180 malignant, 300 benign) that had been classified as BI-RADS category 3-5 on the basis of conventional gray-scale ultrasound findings. The patients were selected by stratified random sampling from the earlier prospective 16-site Pioneer-01 study. For that study, masses were further evaluated by ultrasound alone followed by fused ultrasound and optoacoustic imaging between December 2012 and September 2015. For the current study, 15 readers independently reviewed the previously acquired images after training in optoacoustic imaging interpretation. Readers first assigned probability of malignancy (POM) on the basis of clinical history, mammographic findings, and conventional ultrasound findings. Readers then evaluated fused ultrasound and optoacoustic images, assigned scores for ultrasound and optoacoustic imaging features, and viewed a POM prediction score derived by a machine learning-based DST before issuing final POM. Individual and mean specificities at fixed sensitivity of 98% and partial AUC (pAUC) (95-100% sensitivity) were calculated. RESULTS. Averaged across all readers, specificity at fixed sensitivity of 98% was significantly higher for fused ultrasound and optoacoustic imaging with DST assistance than for ultrasound alone (47.2% vs 38.2%; p = .03). Across all readers, pAUC was higher (p < .001) for fused ultrasound and optoacoustic imaging with DST assistance (0.024 [95% CI, 0.023-0.026]) than for ultrasound alone (0.021 [95% CI, 0.019-0.022]). Better performance using fused ultrasound and optoacoustic imaging with DST assistance than using ultrasound alone was observed for 14 of 15 readers for specificity at fixed sensitivity and for 15 of 15 readers for pAUC. CONCLUSION. Fused ultrasound and optoacoustic imaging with DST assistance had significantly higher specificity at fixed sensitivity than did conventional ultrasound alone. CLINICAL IMPACT. Optoacoustic imaging, integrated with reader training and DST assistance, may help reduce the frequency of biopsy of benign breast masses.
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Affiliation(s)
- Stephen J Seiler
- Department of Radiology, UT Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-8585
| | - Erin I Neuschler
- Department of Radiology, University of Illinois College of Medicine, Chicago, IL
| | - Reni S Butler
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, CT
| | - Philip T Lavin
- Boston Biostatistics Research Foundation, Framingham, MA
| | - Basak E Dogan
- Department of Radiology, UT Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-8585
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3
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Khan F, Naeem K, Khalid A, Khan MN, Ahmad I. Photoacoustic imaging for characterization of radiofrequency ablated cardiac tissues. Lasers Med Sci 2023; 38:61. [PMID: 36732430 DOI: 10.1007/s10103-023-03723-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 01/20/2023] [Indexed: 02/04/2023]
Abstract
Photoacoustic (PA) imaging is an emerging technique being explored for various clinical applications. PA imaging offers a portable, inexpensive, stand-alone modality for evaluating optical contrast agents. PA signals are well-correlated with tissue physical parameters and can quantify various physiological variables (e.g., oxygenation of hemoglobin). Moreover, radiofrequency (RF) ablation is a promising treatment for certain cardiac arrhythmias. Assessment of RF-ablated lesions is of clinical importance. The purpose of this study is to elaborate the PA imaging to characterize RF-ablated cardiac tissues. Specifically, we describe the application of PA imaging to identify, characterize, and quantify cardiac RF lesions, highlighting the fundamental principles and unique benefits of this optical imaging technique. Potential future clinical application of PA imaging that reveals additional information about structural damage in RF-treated cardiac tissue are also anticipated.
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Affiliation(s)
- Farwa Khan
- Services Institute of Medical Sciences, Lahore, Pakistan
| | | | - Amna Khalid
- Nishtar Medical University, Multan, Pakistan
| | | | - Iftikhar Ahmad
- Institute of Radiotherapy and Nuclear Medicine (IRNUM), Peshawar, Pakistan.
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Kataoka M, Iima M, Miyake KK, Matsumoto Y. Multiparametric imaging of breast cancer: An update of current applications. Diagn Interv Imaging 2022; 103:574-583. [DOI: 10.1016/j.diii.2022.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 10/26/2022] [Indexed: 11/21/2022]
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5
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Kye H, Song Y, Ninjbadgar T, Kim C, Kim J. Whole-Body Photoacoustic Imaging Techniques for Preclinical Small Animal Studies. SENSORS (BASEL, SWITZERLAND) 2022; 22:5130. [PMID: 35890810 PMCID: PMC9318812 DOI: 10.3390/s22145130] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
Photoacoustic imaging is a hybrid imaging technique that has received considerable attention in biomedical studies. In contrast to pure optical imaging techniques, photoacoustic imaging enables the visualization of optical absorption properties at deeper imaging depths. In preclinical small animal studies, photoacoustic imaging is widely used to visualize biodistribution at the molecular level. Monitoring the whole-body distribution of chromophores in small animals is a key method used in preclinical research, including drug-delivery monitoring, treatment assessment, contrast-enhanced tumor imaging, and gastrointestinal tracking. In this review, photoacoustic systems for the whole-body imaging of small animals are explored and summarized. The configurations of the systems vary with the scanning methods and geometries of the ultrasound transducers. The future direction of research is also discussed with regard to achieving a deeper imaging depth and faster imaging speed, which are the main factors that an imaging system should realize to broaden its application in biomedical studies.
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Affiliation(s)
- Hyunjun Kye
- Departments of Cogno-Mechatronics Engineering and Optics & Mechatronics Engineering, Pusan National University, Busan 46241, Korea; (H.K.); (Y.S.); (T.N.)
| | - Yuon Song
- Departments of Cogno-Mechatronics Engineering and Optics & Mechatronics Engineering, Pusan National University, Busan 46241, Korea; (H.K.); (Y.S.); (T.N.)
| | - Tsedendamba Ninjbadgar
- Departments of Cogno-Mechatronics Engineering and Optics & Mechatronics Engineering, Pusan National University, Busan 46241, Korea; (H.K.); (Y.S.); (T.N.)
| | - Chulhong Kim
- Departments of Convergence IT Engineering, Mechanical Engineering, and Electrical Engineering, School of Interdisciplinary Bioscience and Bioengineering, Medical Device Innovation Center, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
| | - Jeesu Kim
- Departments of Cogno-Mechatronics Engineering and Optics & Mechatronics Engineering, Pusan National University, Busan 46241, Korea; (H.K.); (Y.S.); (T.N.)
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Kukačka J, Metz S, Dehner C, Muckenhuber A, Paul-Yuan K, Karlas A, Fallenberg EM, Rummeny E, Jüstel D, Ntziachristos V. Image processing improvements afford second-generation handheld optoacoustic imaging of breast cancer patients. PHOTOACOUSTICS 2022; 26:100343. [PMID: 35308306 PMCID: PMC8931444 DOI: 10.1016/j.pacs.2022.100343] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/22/2022] [Accepted: 03/01/2022] [Indexed: 05/09/2023]
Abstract
BACKGROUND Since the initial breast transillumination almost a century ago, breast cancer imaging using light has been considered in different implementations aiming to improve diagnostics, minimize the number of available biopsies, or monitor treatment. However, due to strong photon scattering, conventional optical imaging yields low resolution images, challenging quantification and interpretation. Optoacoustic imaging addresses the scattering limitation and yields high-resolution visualization of optical contrast, offering great potential value for breast cancer imaging. Nevertheless, the image quality of experimental systems remains limited due to a number of factors, including signal attenuation with depth and partial view angle and motion effects, particularly in multi-wavelength measurements. METHODS We developed data analytics methods to improve the accuracy of handheld optoacoustic breast cancer imaging, yielding second-generation optoacoustic imaging performance operating in tandem with ultrasonography. RESULTS We produced the most advanced images yet with handheld optoacoustic examinations of the human breast and breast cancer, in terms of resolution and contrast. Using these advances, we examined optoacoustic markers of malignancy, including vasculature abnormalities, hypoxia, and inflammation, on images obtained from breast cancer patients. CONCLUSIONS We achieved a new level of quality for optoacoustic images from a handheld examination of the human breast, advancing the diagnostic and theranostic potential of the hybrid optoacoustic-ultrasound (OPUS) examination over routine ultrasonography.
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Key Words
- 2G-OPUS, 2nd generation Multispectral Optoacoustic-Ultrasound Tomography
- Breast cancer
- CNR, Contrast-to-noise ratio
- DCIS, Ductal carcinoma in situ
- FOV, Field of view
- FWHM, Full width at half maximum
- ILC, Invasive lobular carcinoma
- Image quality enhancement
- In vivo imaging
- LCO, Lower cut-off
- MSOT, Multispectral Optoacoustic Tomography
- Multispectral optoacoustic tomography
- NAT, Neoadjuvant chemotherapy
- NST, No special type
- OA, Optoacoustics
- SoS, Speed-of-sound
- TIR, Total impulse response
- Tumor-associated microvasculature
- US, Ultrasound
- Ultrasound
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Affiliation(s)
- Jan Kukačka
- Helmholtz Zentrum München (GmbH), Institute of Biological and Medical Imaging, Neuherberg, Germany
- Technical University of Munich, School of Medicine, Chair of Biological Imaging at the Central Institute for Translational Cancer Research (TranslaTUM), Munich, Germany
| | - Stephan Metz
- Technical University of Munich, Department of Diagnostic and Interventional Radiology, Munich, Germany
| | - Christoph Dehner
- Helmholtz Zentrum München (GmbH), Institute of Biological and Medical Imaging, Neuherberg, Germany
- Technical University of Munich, School of Medicine, Chair of Biological Imaging at the Central Institute for Translational Cancer Research (TranslaTUM), Munich, Germany
| | - Alexander Muckenhuber
- Technical University of Munich, Institute of General and Surgical Pathology, Munich, Germany
| | - Korbinian Paul-Yuan
- Helmholtz Zentrum München (GmbH), Institute of Biological and Medical Imaging, Neuherberg, Germany
- Technical University of Munich, School of Medicine, Chair of Biological Imaging at the Central Institute for Translational Cancer Research (TranslaTUM), Munich, Germany
| | - Angelos Karlas
- Helmholtz Zentrum München (GmbH), Institute of Biological and Medical Imaging, Neuherberg, Germany
- Technical University of Munich, School of Medicine, Chair of Biological Imaging at the Central Institute for Translational Cancer Research (TranslaTUM), Munich, Germany
- Klinikum rechts der Isar, Clinic for Vascular and Endovascular Surgery, Munich, Germany
| | - Eva Maria Fallenberg
- Technical University of Munich, Department of Diagnostic and Interventional Radiology, Munich, Germany
| | - Ernst Rummeny
- Technical University of Munich, Department of Diagnostic and Interventional Radiology, Munich, Germany
| | - Dominik Jüstel
- Helmholtz Zentrum München (GmbH), Institute of Biological and Medical Imaging, Neuherberg, Germany
- Helmholtz Zentrum München (GmbH), Institute of Computational Biology, Neuherberg, Germany
- Technical University of Munich, School of Medicine, Chair of Biological Imaging at the Central Institute for Translational Cancer Research (TranslaTUM), Munich, Germany
| | - Vasilis Ntziachristos
- Helmholtz Zentrum München (GmbH), Institute of Biological and Medical Imaging, Neuherberg, Germany
- Technical University of Munich, School of Medicine, Chair of Biological Imaging at the Central Institute for Translational Cancer Research (TranslaTUM), Munich, Germany
- Technical University of Munich, Munich Institute of Robotics and Machine Intelligence (MIRMI), Munich, Germany
- Correspondence to: Helmholtz Zentrum München, Institute of Biological and Medical Imaging, Building 56, Ingolstädter Landstr. 1, D-85764 Neuherberg, Germany.
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Ren Y, Zhang Y, He H, Liu L, Wu X, Song L, Liu C. Optical fiber-based handheld polarized photoacoustic computed tomography for detecting anisotropy of tissues. Quant Imaging Med Surg 2022; 12:2238-2246. [PMID: 35371963 PMCID: PMC8923867 DOI: 10.21037/qims-21-658] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 12/14/2021] [Indexed: 01/26/2024]
Abstract
BACKGROUND Photoacoustic computed tomography (PACT) is a fast-developing biomedical imaging modality and has immense potential for clinical translation. It utilizes laser excitation and acoustic detection to achieve high spatial resolution and considerable imaging depth in biological tissues. Current PACT primarily treats the absorption coefficient of tissues as a scalar variable while reconstructing the image, which limits its use for anisotropic evaluation of the tissues. Thus, by incorporating polarized imaging methods to evaluate anisotropy, applications of PACT can be further enhanced. So far, dichroism-sensitive PACT has been suggested for polarization detection of biological tissues. However, this approach is unsuitable for intraoperative imaging, since high-power spatial light is needed for excitation, which is dangerous and inconvenient to operate. Thus, there is a need to develop a polarized PACT system suitable for clinical use. METHODS Herein, we have proposed a specially designed handheld polarized PACT (HP-PACT) system, which was designed to promote intraoperative anisotropy detection of biological tissues. Excitation light was delivered by an optical fiber and reshaped by a compact set of lenses at the output end of the optical fiber. A polarizer was applied to generate linearly polarized light, and the polarization direction was adjusted by simply rotating the half-wave plate. Photoacoustic imaging (PAI) using excitation with several different polarization directions was carried out. Optical axes and the structure of the anisotropic objects were obtained using the principle of polarization detection with the PAI. RESULTS We experimentally demonstrated the performance of HP-PACT by imaging both the polarized and unpolarized plastic films. The results showed that HP-PACT can successfully detect the direction of the optical axes of polarized plastic films and has the ability to image at different depths. When linearly polarized light with different polarization directions was used as excitation, PAI studies on a highly anisotropic bovine tendon and relatively low anisotropic mouse leg showed the structural differences between the 2 tissues. The quantified degrees of anisotropy of the bovine tendon and mouse legs were 0.6 and 0.3, respectively. CONCLUSIONS The proposed HP-PACT is able to determine the anisotropic substances' optical axes and distinguish anisotropic substances from isotropic ones. Thus, HP-PACT has the potential for intraoperative diagnosis and treatment of anisotropic tissues, including nerves and tendons.
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Affiliation(s)
- Yaguang Ren
- Research Laboratory for Biomedical Optics and Molecular Imaging, CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Ying Zhang
- Research Laboratory for Biomedical Optics and Molecular Imaging, CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi’an, China
| | - Honghui He
- Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Liangjian Liu
- Research Laboratory for Biomedical Optics and Molecular Imaging, CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Xiaojun Wu
- School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi’an, China
| | - Liang Song
- Research Laboratory for Biomedical Optics and Molecular Imaging, CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Chengbo Liu
- Research Laboratory for Biomedical Optics and Molecular Imaging, CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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Optical Modalities for Research, Diagnosis, and Treatment of Stroke and the Consequent Brain Injuries. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12041891] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Stroke is the second most common cause of death and third most common cause of disability worldwide. Therefore, it is an important disease from a medical standpoint. For this reason, various studies have developed diagnostic and therapeutic techniques for stroke. Among them, developments and applications of optical modalities are being extensively studied. In this article, we explored three important optical modalities for research, diagnostic, and therapeutics for stroke and the brain injuries related to it: (1) photochemical thrombosis to investigate stroke animal models; (2) optical imaging techniques for in vivo preclinical studies on stroke; and (3) optical neurostimulation based therapy for stroke. We believe that an exploration and an analysis of previous studies will help us proceed from research to clinical applications of optical modalities for research, diagnosis, and treatment of stroke.
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Zheng H, Li Y, Chen Y, Wang Z, Dai J. Experimental Research on Measuring the Concentration of CO2 in Gas-Liquid Solution Based on PZT Piezoelectric-Photoacoustic Spectroscopy. SENSORS 2022; 22:s22030936. [PMID: 35161682 PMCID: PMC8840420 DOI: 10.3390/s22030936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 02/04/2023]
Abstract
The feasibility of a scheme in which the concentration of CO2 in gas-liquid solution is directly measured based on PZT piezoelectric-photoacoustic spectroscopy was evaluated. The existing device used for the measurement of gas concentration in gas-liquid solution has several limitations, including prolonged duration, loss of gas, and high cost due to the degassing component. In this study, we developed a measuring device in order to solve the problems mentioned above. Using this device, how the intensity of the photoacoustic signal changes with the concentration of CO2 was demonstrated through experiment. The impact that variation of the laser modulation frequency has on the photoacoustic signal was also studied. Furthermore, the experimental data generated from measuring the concentration of CO2 in gas-liquid solution was verified for a wide range of concentrations. It was found that, not only can the error rate of the device be less than 7%, but the time of measurement can be within 60 s. To sum up, the scheme is highly feasible according to the experimental results, which makes measurement of the concentration of a gas in gas-liquid solution in the future more straightforward.
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Wang M, Zhao L, Wei Y, Li J, Qi Z, Su N, Zhao C, Zhang R, Tang T, Liu S, Yang F, Zhu L, He X, Li C, Jiang Y, Yang M. Functional photoacoustic/ultrasound imaging for the assessment of breast intraductal lesions: preliminary clinical findings. BIOMEDICAL OPTICS EXPRESS 2021; 12:1236-1246. [PMID: 33796349 PMCID: PMC7984794 DOI: 10.1364/boe.411215] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/20/2020] [Accepted: 01/27/2021] [Indexed: 05/18/2023]
Abstract
This study aimed to identify features of breast intraductal lesions in photoacoustic/ultrasound (PA/US) imaging and compare PA/US with color Doppler flow/ultrasound (CDFI/US) in the evaluation of breast intraductal lesions. In the nine patients with 10 breast intraductal lesions and 8 patients with 8 benign lesions, total vessel scores evaluated from PA/US are significantly greater than those from CDFI/US (p=0.005). PA internal vessel scores and oxygen saturation (SO2) score are significantly increased in breast intraductal lesions than in benign lesions (p=0.016, p=0.006). With a cutoff PA score (sum of PA internal vessel score and SO2 score) of 2.5, we obtained a sensitivity of 90% and a specificity of 87.5% in differentiation of two groups. PA/US upgraded 40% of breast intraductal lesions, and downgraded 50% of benign lesions from the Breast Imaging Reporting and Data System grading results based on CDFI/US. PA/US functional imaging has the potential in differentiating breast intraductal lesions.
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Affiliation(s)
- Ming Wang
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lingyi Zhao
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, China
| | - Yao Wei
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jianchu Li
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhenhong Qi
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Na Su
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chenyang Zhao
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Rui Zhang
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Tianhong Tang
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Ultrasound, Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen, China
| | - Sirui Liu
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Fang Yang
- Shenzhen Mindray Bio-Medical Electronics Co., Ltd., Shenzhen, China
| | - Lei Zhu
- Shenzhen Mindray Bio-Medical Electronics Co., Ltd., Shenzhen, China
| | - Xujin He
- Shenzhen Mindray Bio-Medical Electronics Co., Ltd., Shenzhen, China
| | - Changhui Li
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, China
| | - Yuxin Jiang
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Meng Yang
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Frankhauser DE, Jovanovic‐Talisman T, Lai L, Yee LD, Wang LV, Mahabal A, Geradts J, Rockne RC, Tomsic J, Jones V, Sistrunk C, Miranda‐Carboni G, Dietze EC, Erhunmwunsee L, Hyslop T, Seewaldt VL. Spatiotemporal strategies to identify aggressive biology in precancerous breast biopsies. WIREs Mech Dis 2021; 13:e1506. [PMID: 33001587 PMCID: PMC8544796 DOI: 10.1002/wsbm.1506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 01/12/2023]
Abstract
Over 90% of breast cancer is cured; yet there remain highly aggressive breast cancers that develop rapidly and are extremely difficult to treat, much less prevent. Breast cancers that rapidly develop between breast image screening are called "interval cancers." The efforts of our team focus on identifying multiscale integrated strategies to identify biologically aggressive precancerous breast lesions. Our goal is to identify spatiotemporal changes that occur prior to development of interval breast cancers. To accomplish this requires integration of new technology. Our team has the ability to perform single cell in situ transcriptional profiling, noncontrast biological imaging, mathematical analysis, and nanoscale evaluation of receptor organization and signaling. These technological innovations allow us to start to identify multidimensional spatial and temporal relationships that drive the transition from biologically aggressive precancer to biologically aggressive interval breast cancer. This article is categorized under: Cancer > Computational Models Cancer > Molecular and Cellular Physiology Cancer > Genetics/Genomics/Epigenetics.
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Affiliation(s)
- David E. Frankhauser
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | | | - Lily Lai
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Lisa D. Yee
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Lihong V. Wang
- Department of Medical EngineeringCalifornia Institute of TechnologyPasadena, CaliforniaUSA
| | - Ashish Mahabal
- Center for Data Driven DiscoveryCalifornia Institute of TechnologyPasadena, CaliforniaUSA
| | - Joseph Geradts
- Department of PathologyDuke UniversityDurhamNorth CarolinaUSA
| | - Russell C. Rockne
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Jerneja Tomsic
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Veronica Jones
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Christopher Sistrunk
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | | | - Eric C. Dietze
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Loretta Erhunmwunsee
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Terry Hyslop
- Department of BiostatisticsDuke UniversityDurhamNorth CarolinaUSA
| | - Victoria L. Seewaldt
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
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12
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Abstract
Lymphedema occurs when interstitial fluid and fibroadipose tissues accumulate abnormally because of decreased drainage of lymphatic fluid as a result of injury, infection, or congenital abnormalities of the lymphatic system drainage pathway. An accurate anatomical map of the lymphatic vasculature is needed not only for understanding the pathophysiology of lymphedema but also for surgical planning. However, because of their limited spatial resolution, no imaging modalities are currently able to noninvasively provide a clear visualization of the lymphatic vessels. Photoacoustic imaging is an emerging medical imaging technique that provides unique scalability of optical resolution and acoustic depth of penetration. Moreover, light-absorbing biomolecules, including oxy- and deoxyhemoglobin, lipids, water, and melanin, can be imaged. Using exogenous contrast agents that are taken up by lymphatic vessels, e.g., indocyanine green, photoacoustic lymphangiography, which has a higher spatial resolution than previous imaging modalities, is possible. Using a new prototype of a photoacoustic imaging system with a wide field of view developed by a Japanese research group, high-resolution three-dimensional structural information of the vasculatures was successfully obtained over a large area in both healthy and lymphedematous extremities. Anatomical information on the lymphatic vessels and adjacent veins provided by photoacoustic lymphangiography is helpful for the management of lymphedema. In particular, such knowledge will facilitate the planning of microsurgical lymphaticovenular anastomoses to bypass the excess fluid component by joining with the circulatory system peripherally. Although challenges remain to establish its implementation in clinical practice, photoacoustic lymphangiography may contribute to improved treatments for lymphedema patients in the near future.
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Yang JM, Ghim CM. Photoacoustic Tomography Opening New Paradigms in Biomedical Imaging. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1310:239-341. [PMID: 33834440 DOI: 10.1007/978-981-33-6064-8_11] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
After the emergence of the ultrasound, X-ray CT, PET, and MRI, photoacoustic tomography (PAT) is now in the phase of its exponential growth, with its expected full maturation being another form of mainstream clinical imaging modality. By combining the high contrast benefit of optical imaging and the high-resolution deep imaging capability of ultrasound, PAT can provide unprecedented anatomical image contrasts at clinically relevant depths as well as enable the use of a variety of functional and molecular imaging information, which is not possible with conventional imaging modalities. With these strengths, PAT has achieved numerous breakthroughs in various biomedical applications and also provided new technical platforms that may be able to resolve unmet issues in clinics. In this chapter, we provide an overview of the development of PAT technology for several major biomedical applications and provide an approximate projection of the future of PAT.
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Affiliation(s)
- Joon-Mo Yang
- Center for Photoacoustic Medical Instruments, Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea.
| | - Cheol-Min Ghim
- Department of Physics, School of Natural Science, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
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14
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Das D, Sharma A, Rajendran P, Pramanik M. Another decade of photoacoustic imaging. Phys Med Biol 2020; 66. [PMID: 33361580 DOI: 10.1088/1361-6560/abd669] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 12/23/2020] [Indexed: 01/09/2023]
Abstract
Photoacoustic imaging - a hybrid biomedical imaging modality finding its way to clinical practices. Although the photoacoustic phenomenon was known more than a century back, only in the last two decades it has been widely researched and used for biomedical imaging applications. In this review we focus on the development and progress of the technology in the last decade (2010-2020). From becoming more and more user friendly, cheaper in cost, portable in size, photoacoustic imaging promises a wide range of applications, if translated to clinic. The growth of photoacoustic community is steady, and with several new directions researchers are exploring, it is inevitable that photoacoustic imaging will one day establish itself as a regular imaging system in the clinical practices.
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Affiliation(s)
- Dhiman Das
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, SINGAPORE
| | - Arunima Sharma
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, SINGAPORE
| | - Praveenbalaji Rajendran
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, SINGAPORE
| | - Manojit Pramanik
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, N1.3-B2-11, Singapore, 637457, SINGAPORE
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15
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Photoacoustic Imaging Probes Based on Tetrapyrroles and Related Compounds. Int J Mol Sci 2020; 21:ijms21093082. [PMID: 32349297 PMCID: PMC7247687 DOI: 10.3390/ijms21093082] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 12/11/2022] Open
Abstract
Photoacoustic imaging (PAI) is a rapidly evolving field in molecular imaging that enables imaging in the depths of ultrasound and with the sensitivity of optical modalities. PAI bases on the photoexcitation of a chromophore, which converts the absorbed light into thermal energy, causing an acoustic pressure wave that can be captured with ultrasound transducers, in generating an image. For in vivo imaging, chromophores strongly absorbing in the near-infrared range (NIR; > 680 nm) are required. As tetrapyrroles have a long history in biomedical applications, novel tetrapyrroles and inspired mimics have been pursued as potentially suitable contrast agents for PAI. The goal of this review is to summarize the current state of the art in PAI applications using tetrapyrroles and related macrocycles inspired by it, highlighting those compounds exhibiting strong NIR-absorption. Furthermore, we discuss the current developments of other absorbers for in vivo photoacoustic (PA) applications.
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16
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Dangi A, Cheng CY, Agrawal S, Tiwari S, Datta GR, Benoit RR, Pratap R, Trolier-Mckinstry S, Kothapalli SR. A Photoacoustic Imaging Device Using Piezoelectric Micromachined Ultrasound Transducers (PMUTs). IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2020; 67:801-809. [PMID: 31794394 PMCID: PMC7224331 DOI: 10.1109/tuffc.2019.2956463] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
A linear piezoelectric micromachined ultrasound transducer (PMUT) array was fabricated and integrated into a device for photoacoustic imaging (PAI) of tissue phantoms. The PMUT contained 65 array elements, with each element having 60 diaphragms of [Formula: see text] diameter and [Formula: see text] pitch. A lead zirconate titanate (PZT) thin film was used as the piezoelectric layer. The in-air vibration response of the PMUT array elements showed a first mode resonance between 6 and 8 MHz. Hydrophone measurements showed 16.2 kPa average peak ultrasound pressure output at 7.5 mm from one element excited with 5 Vpp input. A receive sensitivity of ~0.48 mV/kPa was observed for a PMUT array element with 0 dB gain. The PMUT array was bonded to a custom-printed circuit board to enable compact integration with an optical fiber bundle for PAI. A broad photoacoustic bandwidth of ~89% was observed for the photoacoustic response captured from absorbing pencil lead targets. Linear scanning of a single element of a PMUT array was performed on different tissue phantoms embedded with light-absorbing targets to successfully demonstrate B-mode PAI using PMUTs.
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17
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Shrestha B, DeLuna F, Anastasio MA, Yong Ye J, Brey EM. Photoacoustic Imaging in Tissue Engineering and Regenerative Medicine. TISSUE ENGINEERING. PART B, REVIEWS 2020; 26:79-102. [PMID: 31854242 PMCID: PMC7041335 DOI: 10.1089/ten.teb.2019.0296] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 12/13/2019] [Indexed: 12/16/2022]
Abstract
Several imaging modalities are available for investigation of the morphological, functional, and molecular features of engineered tissues in small animal models. While research in tissue engineering and regenerative medicine (TERM) would benefit from a comprehensive longitudinal analysis of new strategies, researchers have not always applied the most advanced methods. Photoacoustic imaging (PAI) is a rapidly emerging modality that has received significant attention due to its ability to exploit the strong endogenous contrast of optical methods with the high spatial resolution of ultrasound methods. Exogenous contrast agents can also be used in PAI for targeted imaging. Applications of PAI relevant to TERM include stem cell tracking, longitudinal monitoring of scaffolds in vivo, and evaluation of vascularization. In addition, the emerging capabilities of PAI applied to the detection and monitoring of cancer and other inflammatory diseases could be exploited by tissue engineers. This article provides an overview of the operating principles of PAI and its broad potential for application in TERM. Impact statement Photoacoustic imaging, a new hybrid imaging technique, has demonstrated high potential in the clinical diagnostic applications. The optical and acoustic aspect of the photoacoustic imaging system works in harmony to provide better resolution at greater tissue depth. Label-free imaging of vasculature with this imaging can be used to track and monitor disease, as well as the therapeutic progression of treatment. Photoacoustic imaging has been utilized in tissue engineering to some extent; however, the full benefit of this technique is yet to be explored. The increasing availability of commercial photoacoustic systems will make application as an imaging tool for tissue engineering application more feasible. This review first provides a brief description of photoacoustic imaging and summarizes its current and potential application in tissue engineering.
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Affiliation(s)
- Binita Shrestha
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, Texas
| | - Frank DeLuna
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, Texas
| | - Mark A. Anastasio
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Jing Yong Ye
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, Texas
| | - Eric M. Brey
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, Texas
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18
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Kim J, Park EY, Park B, Choi W, Lee KJ, Kim C. Towards clinical photoacoustic and ultrasound imaging: Probe improvement and real-time graphical user interface. Exp Biol Med (Maywood) 2020; 245:321-329. [PMID: 31916849 PMCID: PMC7370595 DOI: 10.1177/1535370219889968] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Photoacoustic imaging is a non-invasive and non-ionizing biomedical technique that has been investigated widely for various clinical applications. By taking the advantages of conventional ultrasound imaging, hand-held operation with a linear array transducer should be favorable for successful clinical translation of photoacoustic imaging. In this paper, we present new key updates contributed to the previously developed real-time clinical photoacoustic and ultrasound imaging system for improving the clinical usability of the system. We developed a seamless image optimization platform, designed a real-time parameter control software with a user-friendly graphical user interface, performed Monte Carlo simulation of the optical fluence in the imaging plane, and optimized the geometry of the imaging probe. The updated system allows optimizing of all imaging parameters while continuously acquiring the photoacoustic and ultrasound images in real-time. The updated system has great potential to be used in a variety of clinical applications such as assessing the malignancy of thyroid cancer, breast cancer, and melanoma.
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Affiliation(s)
| | | | - Byullee Park
- Departments of Creative IT Engineering, Electrical Engineering, and Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Gyeongbuk 37673, Republic of Korea
| | - Wonseok Choi
- Departments of Creative IT Engineering, Electrical Engineering, and Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Gyeongbuk 37673, Republic of Korea
| | - Ki J Lee
- Departments of Creative IT Engineering, Electrical Engineering, and Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Gyeongbuk 37673, Republic of Korea
| | - Chulhong Kim
- Departments of Creative IT Engineering, Electrical Engineering, and Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Gyeongbuk 37673, Republic of Korea
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19
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Photoacoustic Imaging for Management of Breast Cancer: A Literature Review and Future Perspectives. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10030767] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this review article, a detailed chronological account of the research related to photoacoustic imaging for the management of breast cancer is presented. Performing a detailed analysis of the breast cancer detection related photoacoustic imaging studies undertaken by different research groups, this review attempts to present the clinical evidence in support of using photoacoustic imaging for breast cancer detection. Based on the experimental evidence obtained from the clinical studies conducted so far, the performance of photoacoustic imaging is compared with that of conventional breast imaging modalities. While we find that there is enough experimental evidence to support the use of photoacoustic imaging for breast cancer detection, additional clinical studies are required to be performed to evaluate the diagnostic potential of photoacoustic imaging for identifying different types of breast cancer. To establish the utility of photoacoustic imaging for breast cancer screening, clinical studies with high-risk asymptomatic patients need to be done.
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20
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Manohar S, Dantuma M. Current and future trends in photoacoustic breast imaging. PHOTOACOUSTICS 2019; 16:100134. [PMID: 31871887 PMCID: PMC6909206 DOI: 10.1016/j.pacs.2019.04.004] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 02/19/2019] [Accepted: 04/10/2019] [Indexed: 05/14/2023]
Abstract
Non-invasive detection of breast cancer has been regarded as the holy grail of applications for photoacoustic (optoacoustic) imaging right from the early days of re-discovery of the method. Two-and-a-half decades later we report on the state-of-the-art in photoacoustic breast imaging technology and clinical studies. Even within the single application of breast imaging, we find imagers with various measurement geometries, ultrasound detection characteristics, illumination schemes, and image reconstruction strategies. We first analyze the implications on performance of a few of these design choices in a generic imaging system, before going into detailed descriptions of the imagers. Per imaging system we present highlights of patient studies, which barring a couple are mostly in the nature of technology demonstrations and proof-of-principle studies. We close this work with a discussion on several aspects that may turn out to be crucial for the future clinical translation of the method.
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21
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Attia ABE, Balasundaram G, Moothanchery M, Dinish U, Bi R, Ntziachristos V, Olivo M. A review of clinical photoacoustic imaging: Current and future trends. PHOTOACOUSTICS 2019; 16:100144. [PMID: 31871888 PMCID: PMC6911900 DOI: 10.1016/j.pacs.2019.100144] [Citation(s) in RCA: 383] [Impact Index Per Article: 76.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/05/2019] [Accepted: 08/21/2019] [Indexed: 05/02/2023]
Abstract
Photoacoustic imaging (or optoacoustic imaging) is an upcoming biomedical imaging modality availing the benefits of optical resolution and acoustic depth of penetration. With its capacity to offer structural, functional, molecular and kinetic information making use of either endogenous contrast agents like hemoglobin, lipid, melanin and water or a variety of exogenous contrast agents or both, PAI has demonstrated promising potential in a wide range of preclinical and clinical applications. This review provides an overview of the rapidly expanding clinical applications of photoacoustic imaging including breast imaging, dermatologic imaging, vascular imaging, carotid artery imaging, musculoskeletal imaging, gastrointestinal imaging and adipose tissue imaging and the future directives utilizing different configurations of photoacoustic imaging. Particular emphasis is placed on investigations performed on human or human specimens.
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Key Words
- AR-PAM, acoustic resolution-photoacoustic microscopy
- Clinical applications
- DAQ, data acquisition
- FOV, field-of-view
- Hb, deoxy-hemoglobin
- HbO2, oxy-hemoglobin
- LED, light emitting diode
- MAP, maximum amplitude projection
- MEMS, microelectromechanical systems
- MRI, magnetic resonance imaging
- MSOT, multispectral optoacoustic tomography
- OCT, optical coherence tomography
- OR-PAM, optical resolution-photoacoustic microscopy
- Optoacoustic mesoscopy
- Optoacoustic tomography
- PA, photoacoustic
- PAI, photoacoustic imaging
- PAM, photoacoustic microscopy
- PAT, photoacoustic tomography
- Photoacoustic imaging
- Photoacoustic microscopy
- RSOM, raster-scanning optoacoustic mesoscopy
- SBH-PACT, single breath hold photoacoustic computed tomography system
- US, ultrasound
- sO2, saturation
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Affiliation(s)
| | | | - Mohesh Moothanchery
- Laboratory of Bio-optical Imaging, Singapore Bioimaging Consortium, A*STAR, Singapore
| | - U.S. Dinish
- Laboratory of Bio-optical Imaging, Singapore Bioimaging Consortium, A*STAR, Singapore
| | - Renzhe Bi
- Laboratory of Bio-optical Imaging, Singapore Bioimaging Consortium, A*STAR, Singapore
| | - Vasilis Ntziachristos
- Institute for Biological and Medical Imaging, Technische Universität München and Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Malini Olivo
- Laboratory of Bio-optical Imaging, Singapore Bioimaging Consortium, A*STAR, Singapore
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22
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Zalev J, Richards LM, Clingman BA, Harris J, Cantu E, Menezes GLG, Avila C, Bertrand A, Saenz X, Miller S, Oraevsky AA, Kolios MC. Opto-acoustic imaging of relative blood oxygen saturation and total hemoglobin for breast cancer diagnosis. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-16. [PMID: 31849204 PMCID: PMC7005558 DOI: 10.1117/1.jbo.24.12.121915] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 11/22/2019] [Indexed: 05/14/2023]
Abstract
Opto-acoustic imaging involves using light to produce sound waves for visualizing blood in biological tissue. By using multiple optical wavelengths, diagnostic images of blood oxygen saturation and total hemoglobin are generated using endogenous optical contrast, without injection of any external contrast agent and without using any ionizing radiation. The technology has been used in recent clinical studies for diagnosis of breast cancer to help distinguish benign from malignant lesions, potentially reducing the need for biopsy through improved diagnostic imaging accuracy. To enable this application, techniques for mapping oxygen saturation differences within tissue are necessary. Using biologically relevant opto-acoustic phantoms, we analyze the ability of an opto-acoustic imaging system to display colorized parametric maps that are generated using a statistical mapping approach. To mimic breast tissue, a material with closely matching properties for optical absorption, optical scattering, acoustic attenuation, and speed of sound is used. The phantoms include two vessels filled with whole blood at oxygen saturation levels determined using a sensor-based approach. A flow system with gas-mixer and membrane oxygenator adjusts the oxygen saturation of each vessel independently. Datasets are collected with an investigational Imagio® breast imaging system. We examine the ability to distinguish vessels as the oxygen saturation level and imaging depth are varied. At depth of 15 mm and hematocrit of 42%, a sufficient level of contrast to distinguish between two 1.6-mm diameter vessels was measured for an oxygen saturation difference of ∼4.6 % . In addition, an oxygenated vessel was visible at a depth of 48 mm using an optical wavelength of 1064 nm, and a deoxygenated vessel was visible to a depth of 42 mm with 757 nm. The results provide insight toward using color mapped opto-acoustic images for diagnosing breast cancer.
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Affiliation(s)
- Jason Zalev
- Seno Medical Instruments, Inc., San Antonio, Texas, United States
- Ryerson University, Department of Physics, Toronto, Ontario, Canada
- Address all correspondence to Jason Zalev, E-mail: ; Lisa M. Richards, E-mail: ; Bryan A. Clingman, E-mail:
| | - Lisa M. Richards
- Seno Medical Instruments, Inc., San Antonio, Texas, United States
- Address all correspondence to Jason Zalev, E-mail: ; Lisa M. Richards, E-mail: ; Bryan A. Clingman, E-mail:
| | - Bryan A. Clingman
- Seno Medical Instruments, Inc., San Antonio, Texas, United States
- Address all correspondence to Jason Zalev, E-mail: ; Lisa M. Richards, E-mail: ; Bryan A. Clingman, E-mail:
| | - Jeff Harris
- Seno Medical Instruments, Inc., San Antonio, Texas, United States
| | - Edgar Cantu
- Seno Medical Instruments, Inc., San Antonio, Texas, United States
| | | | - Carlos Avila
- Seno Medical Instruments, Inc., San Antonio, Texas, United States
| | - Allison Bertrand
- Seno Medical Instruments, Inc., San Antonio, Texas, United States
| | - Xavier Saenz
- Seno Medical Instruments, Inc., San Antonio, Texas, United States
| | - Steve Miller
- Seno Medical Instruments, Inc., San Antonio, Texas, United States
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23
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Tsuge I, Saito S, Yamamoto G, Sekiguchi H, Yoshikawa A, Matsumoto Y, Suzuki S, Toi M. Preoperative vascular mapping for anterolateral thigh flap surgeries: A clinical trial of photoacoustic tomography imaging. Microsurgery 2019; 40:324-330. [DOI: 10.1002/micr.30531] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 08/06/2019] [Accepted: 10/25/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Itaru Tsuge
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine Kyoto University Kyoto Japan
| | - Susumu Saito
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine Kyoto University Kyoto Japan
| | - Goshiro Yamamoto
- Department of Medical Informatics, Graduate School of Medicine Kyoto University Kyoto Japan
| | - Hiroyuki Sekiguchi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine Kyoto University Kyoto Japan
| | - Aya Yoshikawa
- Department of Breast Surgery, Graduate School of Medicine Kyoto University Kyoto Japan
| | - Yoshiaki Matsumoto
- Department of Breast Surgery, Graduate School of Medicine Kyoto University Kyoto Japan
| | - Shigehiko Suzuki
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine Kyoto University Kyoto Japan
- Department of Plastic and Reconstructive Surgery Hamamatsu Rosai Hospital Shizuoka Japan
| | - Masakazu Toi
- Department of Breast Surgery, Graduate School of Medicine Kyoto University Kyoto Japan
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24
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Nyayapathi N, Xia J. Photoacoustic imaging of breast cancer: a mini review of system design and image features. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-13. [PMID: 31677256 PMCID: PMC7005545 DOI: 10.1117/1.jbo.24.12.121911] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 10/14/2019] [Indexed: 05/03/2023]
Abstract
Breast cancer is one of the leading causes for cancer related deaths in women, and early detection is extremely important to improve survival rates. Currently, x-ray mammogram is the only modality for mass screening of asymptomatic women. However, it has decreased sensitivity in radiographically dense breasts, which is also associated with a higher risk for breast cancer. Photoacoustic (PA) imaging is an emerging modality that enables deep tissue imaging of optical contrast at ultrasonically defined spatial resolution, which is much higher than that can be achieved in purely optical imaging modalities. Because of high optical absorption from hemoglobin molecules, PA imaging can map out hemo distribution and dynamics in breast tissue and identify malignant lesions based on tumor associated angiogenesis and hypoxia. We review various PA breast imaging systems proposed over the past few years and summarize the PA features of breast cancer identified in these systems.
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Affiliation(s)
- Nikhila Nyayapathi
- University at Buffalo, The State University of New York, Department of Biomedical Engineering, Buffalo, New York, United States
- University at Buffalo, The State University of New York, Department of Electrical Engineering, Buffalo, New York, United States
| | - Jun Xia
- University at Buffalo, The State University of New York, Department of Biomedical Engineering, Buffalo, New York, United States
- Address all correspondence to Jun Xia, E-mail:
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25
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Development of a Stationary 3D Photoacoustic Imaging System Using Sparse Single-Element Transducers: Phantom Study. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9214505] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Photoacoustic imaging (PAI) is an emerging label-free and non-invasive modality for imaging biological tissues. PAI has been implemented in different configurations, one of which is photoacoustic computed tomography (PACT) with a potential wide range of applications, including brain and breast imaging. Hemispherical Array PACT (HA-PACT) is a variation of PACT that has solved the limited detection-view problem. Here, we designed an HA-PACT system consisting of 50 single element transducers. For implementation, we initially performed a simulation study, with parameters close to those in practice, to determine the relationship between the number of transducers and the quality of the reconstructed image. We then used the greatest number of transducers possible on the hemisphere and imaged copper wire phantoms coated with a light absorbing material to evaluate the performance of the system. Several practical issues such as light illumination, arrangement of the transducers, and an image reconstruction algorithm have been comprehensively studied.
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26
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Vu T, Razansky D, Yao J. Listening to tissues with new light: recent technological advances in photoacoustic imaging. JOURNAL OF OPTICS (2010) 2019; 21:10.1088/2040-8986/ab3b1a. [PMID: 32051756 PMCID: PMC7015182 DOI: 10.1088/2040-8986/ab3b1a] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Photoacoustic tomography (PAT), or optoacoustic tomography, has achieved remarkable progress in the past decade, benefiting from the joint developments in optics, acoustics, chemistry, computing and mathematics. Unlike pure optical or ultrasound imaging, PAT can provide unique optical absorption contrast as well as widely scalable spatial resolution, penetration depth and imaging speed. Moreover, PAT has inherent sensitivity to tissue's functional, molecular, and metabolic state. With these merits, PAT has been applied in a wide range of life science disciplines, and has enabled biomedical research unattainable by other imaging methods. This Review article aims at introducing state-of-the-art PAT technologies and their representative applications. The focus is on recent technological breakthroughs in structural, functional, molecular PAT, including super-resolution imaging, real-time small-animal whole-body imaging, and high-sensitivity functional/molecular imaging. We also discuss the remaining challenges in PAT and envisioned opportunities.
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Affiliation(s)
- Tri Vu
- Photoacoustic Imaging Lab, Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Daniel Razansky
- Faculty of Medicine and Institute of Pharmacology and Toxicology, University of Zurich, Switzerland
- Institute for Biomedical Engineering and Department of Information Technology and Electrical Engineering, ETH Zurich, Switzerland
| | - Junjie Yao
- Photoacoustic Imaging Lab, Department of Biomedical Engineering, Duke University, Durham, NC, USA
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27
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Liu S, Feng X, Jin H, Zhang R, Luo Y, Zheng Z, Gao F, Zheng Y. Handheld Photoacoustic Imager for Theranostics in 3D. IEEE TRANSACTIONS ON MEDICAL IMAGING 2019; 38:2037-2046. [PMID: 30802853 DOI: 10.1109/tmi.2019.2900656] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A handheld approach to 3D photoacoustic imaging is essential in clinical applications. To this end, we develop a 3D handheld photoacoustic imager for dynamic (temporally and spatially) volumetric visualization. In this 3D imager, the optically transmitting part and the acoustically receiving part are integrated into a single handheld probe with a compact size about 160 mm ×64 mm ×40 mm. Besides, a dedicated imaging reconstruction algorithm for the heterogeneous medium is developed based on the phase-shift migration method in the frequency domain, which deals well with the stratified condition in the designed system. Dynamic 3D imaging supporting flexible handheld operation is demonstrated with needle biopsy and in vitro temperature measurement for photothermal therapy. The development of such a 3D handheld photoacoustic system paves the way for compact and handheld-operating implementations, and its further clinical exploration is promising.
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28
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Nyayapathi N, Lim R, Zhang H, Zheng W, Wang Y, Tiao M, Oh KW, Fan XC, Bonaccio E, Takabe K, Xia J. Dual Scan Mammoscope (DSM)-A New Portable Photoacoustic Breast Imaging System With Scanning in Craniocaudal Plane. IEEE Trans Biomed Eng 2019; 67:1321-1327. [PMID: 31425013 DOI: 10.1109/tbme.2019.2936088] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE We present a new photoacoustic tomography system that provides visualization of angiographic features in a human breast with mammogram-like images. METHODS The system images a mildly compressed breast, from both top and bottom, using two 128-element, 2.25 MHz linear transducer arrays and line optical fiber bundles. The mild compression is achieved using plastic films, which is a more comfortable experience for the patient compared to rigid metal plates used in a traditional mammogram. RESULTS We could image a D cup-sized breast of 7 cm thickness within 1 minute and achieve a spatial resolution of around 1 mm in all directions. CONCLUSION Our system possesses the benefits of portability, speedy scanning, and patient comfort. The craniocaudal-view images can be easily correlated with existing imaging modalities for data interpretation. SIGNIFICANCE Early cancer detection plays a critical role in overall cancer survival rate. Our system may address the limitations of mammogram and offer a radiation-free screening technique for patients with dense breasts.
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Steinberg I, Huland DM, Vermesh O, Frostig HE, Tummers WS, Gambhir SS. Photoacoustic clinical imaging. PHOTOACOUSTICS 2019; 14:77-98. [PMID: 31293884 PMCID: PMC6595011 DOI: 10.1016/j.pacs.2019.05.001] [Citation(s) in RCA: 286] [Impact Index Per Article: 57.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 04/09/2019] [Accepted: 05/30/2019] [Indexed: 05/18/2023]
Abstract
Photoacoustic is an emerging biomedical imaging modality, which allows imaging optical absorbers in the tissue by acoustic detectors (light in - sound out). Such a technique has an immense potential for clinical translation since it allows high resolution, sufficient imaging depth, with diverse endogenous and exogenous contrast, and is free from ionizing radiation. In recent years, tremendous developments in both the instrumentation and imaging agents have been achieved. These opened avenues for clinical imaging of various sites allowed applications such as brain functional imaging, breast cancer screening, diagnosis of psoriasis and skin lesions, biopsy and surgery guidance, the guidance of tumor therapies at the reproductive and urological systems, as well as imaging tumor metastases at the sentinel lymph nodes. Here we survey the various clinical and pre-clinical literature and discuss the potential applications and hurdles that still need to be overcome.
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Affiliation(s)
- Idan Steinberg
- Department of Radiology, At Stanford University, School of Medicine, Stanford, CA, United States
- Department of Bioengineering, At Stanford University, School of Medicine, Stanford, CA, United States
| | - David M. Huland
- Department of Radiology, At Stanford University, School of Medicine, Stanford, CA, United States
- Molecular Imaging Program at Stanford, Canary Center at Stanford for Cancer Early Detection, At Stanford University, School of Medicine, Stanford, CA, United States
| | - Ophir Vermesh
- Department of Radiology, At Stanford University, School of Medicine, Stanford, CA, United States
- Molecular Imaging Program at Stanford, Canary Center at Stanford for Cancer Early Detection, At Stanford University, School of Medicine, Stanford, CA, United States
| | - Hadas E. Frostig
- Department of Radiology, At Stanford University, School of Medicine, Stanford, CA, United States
- Molecular Imaging Program at Stanford, Canary Center at Stanford for Cancer Early Detection, At Stanford University, School of Medicine, Stanford, CA, United States
| | - Willemieke S. Tummers
- Department of Radiology, At Stanford University, School of Medicine, Stanford, CA, United States
- Molecular Imaging Program at Stanford, Canary Center at Stanford for Cancer Early Detection, At Stanford University, School of Medicine, Stanford, CA, United States
| | - Sanjiv S. Gambhir
- Department of Radiology, At Stanford University, School of Medicine, Stanford, CA, United States
- Department of Bioengineering, At Stanford University, School of Medicine, Stanford, CA, United States
- Department of Materials Science & Engineering, At Stanford University, School of Medicine, Stanford, CA, United States
- Molecular Imaging Program at Stanford, Canary Center at Stanford for Cancer Early Detection, At Stanford University, School of Medicine, Stanford, CA, United States
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Gargiulo S, Albanese S, Mancini M. State-of-the-Art Preclinical Photoacoustic Imaging in Oncology: Recent Advances in Cancer Theranostics. CONTRAST MEDIA & MOLECULAR IMAGING 2019; 2019:5080267. [PMID: 31182936 PMCID: PMC6515147 DOI: 10.1155/2019/5080267] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 04/15/2019] [Indexed: 02/08/2023]
Abstract
The optical imaging plays an increasing role in preclinical studies, particularly in cancer biology. The combined ultrasound and optical imaging, named photoacoustic imaging (PAI), is an emerging hybrid technique for real-time molecular imaging in preclinical research and recently expanding into clinical setting. PAI can be performed using endogenous contrast, particularly from oxygenated and deoxygenated hemoglobin and melanin, or exogenous contrast agents, sometimes targeted for specific biomarkers, providing comprehensive morphofunctional and molecular information on tumor microenvironment. Overall, PAI has revealed notable opportunities to improve knowledge on tumor pathophysiology and on the biological mechanisms underlying therapy. The aim of this review is to introduce the principles of PAI and to provide a brief overview of current PAI applications in preclinical research, highlighting also on recent advances in clinical translation for cancer diagnosis, staging, and therapy.
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Affiliation(s)
- Sara Gargiulo
- Institute of Biostructure and Bioimaging of National Council of Research, Naples 80145, Italy
| | - Sandra Albanese
- Institute of Biostructure and Bioimaging of National Council of Research, Naples 80145, Italy
| | - Marcello Mancini
- Institute of Biostructure and Bioimaging of National Council of Research, Naples 80145, Italy
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31
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Upputuri PK, Pramanik M. Photoacoustic imaging in the second near-infrared window: a review. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-20. [PMID: 30968648 PMCID: PMC6990072 DOI: 10.1117/1.jbo.24.4.040901] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 03/18/2019] [Indexed: 05/04/2023]
Abstract
Photoacoustic (PA) imaging is an emerging medical imaging modality that combines optical excitation and ultrasound detection. Because ultrasound scatters much less than light in biological tissues, PA generates high-resolution images at centimeters depth. In recent years, wavelengths in the second near-infrared (NIR-II) window (1000 to 1700 nm) have been increasingly explored due to its potential for preclinical and clinical applications. In contrast to the conventional PA imaging in the visible (400 to 700 nm) and the first NIR-I (700 to 1000 nm) window, PA imaging in the NIR-II window offers numerous advantages, including high spatial resolution, deeper penetration depth, reduced optical absorption, and tissue scattering. Moreover, the second window allows a fivefold higher light excitation energy density compared to the visible window for enhancing the imaging depth significantly. We highlight the importance of the second window for PA imaging and discuss the various NIR-II PA imaging systems and contrast agents with strong absorption in the NIR-II spectral region. Numerous applications of NIR-II PA imaging, including whole-body animal imaging and human imaging, are also discussed.
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Affiliation(s)
- Paul Kumar Upputuri
- Nanyang Technological University, School of Chemical and Biomedical Engineering, Singapore
| | - Manojit Pramanik
- Nanyang Technological University, School of Chemical and Biomedical Engineering, Singapore
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Dangi A, Agrawal S, Tiwari S, Jadhav S, Cheng C, Trolier-McKinstry S, Pratap R, Kothapalli SR. Evaluation of High Frequency Piezoelectric Micromachined Ultrasound Transducers for Photoacoustic Imaging. PROCEEDINGS OF IEEE SENSORS. IEEE INTERNATIONAL CONFERENCE ON SENSORS 2018; 2018. [PMID: 31303903 DOI: 10.1109/icsens.2018.8589733] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In this work, the design, fabrication, and characterization of piezoelectric micromachined ultrasound transducer (PMUT) arrays for photoacoustic imaging applications are reported. An 80-element linear PMUT array with each element having 53 PMUT cells of 125 μm cell diameter were fabricated using 650 nm thick lead zirconate titanate (PZT) as the active piezoelectric layer. The PMUTs are designed to operate at ~10 MHz resonant frequency. The PMUT elements are validated for photoacoustic imaging using an agar gel phantom with embedded pencil leads as the imaging target. Photoacoustic A-line response of the targets captured by single PMUT element shows ~7 MHz center frequency with ~4.8 MHz bandwidth. B-mode images reconstructed from A-lines recorded during the linear scanning of a single element clearly imaged all the targets, thus validating the potential of the fabricated PMUTs for photoacoustic imaging.
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Affiliation(s)
- Ajay Dangi
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Sumit Agrawal
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Sudhanshu Tiwari
- Center for Nano Science and Engineering, Indian Institute of Science, Bangalore, India
| | - Shubham Jadhav
- Center for Nano Science and Engineering, Indian Institute of Science, Bangalore, India
| | - Christopher Cheng
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Susan Trolier-McKinstry
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Rudra Pratap
- Center for Nano Science and Engineering, Indian Institute of Science, Bangalore, India
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Nagae K, Asao Y, Sudo Y, Murayama N, Tanaka Y, Ohira K, Ishida Y, Otsuka A, Matsumoto Y, Saito S, Furu M, Murata K, Sekiguchi H, Kataoka M, Yoshikawa A, Ishii T, Togashi K, Shiina T, Kabashima K, Toi M, Yagi T. Real-time 3D Photoacoustic Visualization System with a Wide Field of View for Imaging Human Limbs. F1000Res 2018; 7:1813. [PMID: 30854189 PMCID: PMC6396844 DOI: 10.12688/f1000research.16743.2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/05/2019] [Indexed: 12/13/2022] Open
Abstract
Background: A breast-specific photoacoustic imaging (PAI) system prototype equipped with a hemispherical detector array (HDA) has been reported as a promising system configuration for providing high morphological reproducibility for vascular structures in living bodies. Methods: To image the vasculature of human limbs, a newly designed PAI system prototype (PAI-05) with an HDA with a higher density sensor arrangement was developed. The basic device configuration mimicked that of a previously reported breast-specific PAI system. A new imaging table and a holding tray for imaging a subject's limb were adopted. Results: The device's performance was verified using a phantom. Contrast of 8.5 was obtained at a depth of 2 cm, and the viewing angle reached up to 70 degrees, showing sufficient performance for limb imaging. An arbitrary wavelength was set, and a reasonable PA signal intensity dependent on the wavelength was obtained. To prove the concept of imaging human limbs, various parts of the subject were scanned. High-quality still images of a living human with a wider size than that previously reported were obtained by scanning within the horizontal plane and averaging the images. The maximum field of view (FOV) was 270 mm × 180 mm. Even in movie mode, one-shot 3D volumetric data were obtained in an FOV range of 20 mm in diameter, which is larger than values in previous reports. By continuously acquiring these images, we were able to produce motion pictures. Conclusion: We developed a PAI prototype system equipped with an HDA suitable for imaging limbs. As a result, the subject could be scanned over a wide range while in a more comfortable position, and high-quality still images and motion pictures could be obtained.
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Affiliation(s)
- Kenichi Nagae
- Medical Imaging System Development Center, Canon Inc., 3-30-2 Shimomaruko, Ohta-ku, Tokyo, 1468501, Japan
| | - Yasufumi Asao
- ImPACT Program, Japan Science and Technology Agency, K’s Gobancho, 7, Gobancho, Chiyoda-ku, Tokyo, 1020076, Japan
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Yoshiaki Sudo
- Medical Imaging System Development Center, Canon Inc., 3-30-2 Shimomaruko, Ohta-ku, Tokyo, 1468501, Japan
| | - Naoyuki Murayama
- Healthcare Ultrasound R&D Center, Hitachi, Ltd., 3-1-1, Higashikoigakubo, Kokubunji-shi, Tokyo, 1850014, Japan
| | - Yuusuke Tanaka
- Research & Development Center, Japan Probe Co., Ltd., 1-1-14, Nakamura-cho, Minami-ku, Yokohama, Kanagawa, 2320033, Japan
| | - Katsumi Ohira
- Research & Development Center, Japan Probe Co., Ltd., 1-1-14, Nakamura-cho, Minami-ku, Yokohama, Kanagawa, 2320033, Japan
| | - Yoshihiro Ishida
- Department of Dermatology, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Atsushi Otsuka
- Department of Dermatology, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Yoshiaki Matsumoto
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Susumu Saito
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Moritoshi Furu
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Koichi Murata
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Hiroyuki Sekiguchi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Masako Kataoka
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Aya Yoshikawa
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Tomoko Ishii
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Tsuyoshi Shiina
- Department of Human Health Science, Graduate School of Medicine, Kyoto University, 53 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Kenji Kabashima
- Department of Dermatology, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Masakazu Toi
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Takayuki Yagi
- ImPACT Program, Japan Science and Technology Agency, K’s Gobancho, 7, Gobancho, Chiyoda-ku, Tokyo, 1020076, Japan
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Nagae K, Asao Y, Sudo Y, Murayama N, Tanaka Y, Ohira K, Ishida Y, Otsuka A, Matsumoto Y, Saito S, Furu M, Murata K, Sekiguchi H, Kataoka M, Yoshikawa A, Ishii T, Togashi K, Shiina T, Kabashima K, Toi M, Yagi T. Real-time 3D Photoacoustic Visualization System with a Wide Field of View for Imaging Human Limbs. F1000Res 2018; 7:1813. [PMID: 30854189 PMCID: PMC6396844 DOI: 10.12688/f1000research.16743.1] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/07/2018] [Indexed: 01/22/2023] Open
Abstract
Background: A breast-specific photoacoustic imaging (PAI) system prototype equipped with a hemispherical detector array (HDA) has been reported as a promising system configuration for providing high morphological reproducibility for vascular structures in living bodies. Methods: To image the vasculature of human limbs, a newly designed PAI system prototype (PAI-05) with an HDA with a higher density sensor arrangement was developed. The basic device configuration mimicked that of a previously reported breast-specific PAI system. A new imaging table and a holding tray for imaging a subject's limb were adopted. Results: The device's performance was verified using a phantom. Contrast of 8.5 was obtained at a depth of 2 cm, and the viewing angle reached up to 70 degrees, showing sufficient performance for limb imaging. An arbitrary wavelength was set, and a reasonable PA signal intensity dependent on the wavelength was obtained. To prove the concept of imaging human limbs, various parts of the subject were scanned. High-quality still images of a living human with a wider size than that previously reported were obtained by scanning within the horizontal plane and averaging the images. The maximum field of view (FOV) was 270 mm × 180 mm. Even in movie mode, one-shot 3D volumetric data were obtained in an FOV range of 20 mm in diameter, which is larger than values in previous reports. By continuously acquiring these images, we were able to produce motion pictures. Conclusion: We developed a PAI prototype system equipped with an HDA suitable for imaging limbs. As a result, the subject could be scanned over a wide range while in a more comfortable position, and high-quality still images and motion pictures could be obtained.
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Affiliation(s)
- Kenichi Nagae
- Medical Imaging System Development Center, Canon Inc., 3-30-2 Shimomaruko, Ohta-ku, Tokyo, 1468501, Japan
| | - Yasufumi Asao
- ImPACT Program, Japan Science and Technology Agency, K’s Gobancho, 7, Gobancho, Chiyoda-ku, Tokyo, 1020076, Japan
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Yoshiaki Sudo
- Medical Imaging System Development Center, Canon Inc., 3-30-2 Shimomaruko, Ohta-ku, Tokyo, 1468501, Japan
| | - Naoyuki Murayama
- Healthcare Ultrasound R&D Center, Hitachi, Ltd., 3-1-1, Higashikoigakubo, Kokubunji-shi, Tokyo, 1850014, Japan
| | - Yuusuke Tanaka
- Research & Development Center, Japan Probe Co., Ltd., 1-1-14, Nakamura-cho, Minami-ku, Yokohama, Kanagawa, 2320033, Japan
| | - Katsumi Ohira
- Research & Development Center, Japan Probe Co., Ltd., 1-1-14, Nakamura-cho, Minami-ku, Yokohama, Kanagawa, 2320033, Japan
| | - Yoshihiro Ishida
- Department of Dermatology, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Atsushi Otsuka
- Department of Dermatology, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Yoshiaki Matsumoto
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Susumu Saito
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Moritoshi Furu
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Koichi Murata
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Hiroyuki Sekiguchi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Masako Kataoka
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Aya Yoshikawa
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Tomoko Ishii
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Tsuyoshi Shiina
- Department of Human Health Science, Graduate School of Medicine, Kyoto University, 53 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Kenji Kabashima
- Department of Dermatology, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Masakazu Toi
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 6068507, Japan
| | - Takayuki Yagi
- ImPACT Program, Japan Science and Technology Agency, K’s Gobancho, 7, Gobancho, Chiyoda-ku, Tokyo, 1020076, Japan
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Matsumoto Y, Asao Y, Sekiguchi H, Yoshikawa A, Ishii T, Nagae KI, Kobayashi S, Tsuge I, Saito S, Takada M, Ishida Y, Kataoka M, Sakurai T, Yagi T, Kabashima K, Suzuki S, Togashi K, Shiina T, Toi M. Visualising peripheral arterioles and venules through high-resolution and large-area photoacoustic imaging. Sci Rep 2018; 8:14930. [PMID: 30297721 PMCID: PMC6175891 DOI: 10.1038/s41598-018-33255-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 09/06/2018] [Indexed: 01/26/2023] Open
Abstract
Photoacoustic (PA) imaging (PAI) has been shown to be a promising tool for non-invasive blood vessel imaging. A PAI system comprising a hemispherical detector array (HDA) has been reported previously as a method providing high morphological reproducibility. However, further improvements in diagnostic capability will require improving the image quality of PAI and fusing functional and morphological imaging. Our newly developed PAI system prototype not only enhances the PA image resolution but also acquires ultrasonic (US) B-mode images at continuous positions in the same coordinate axes. In addition, the pulse-to-pulse alternating laser irradiation shortens the measurement time difference between two wavelengths. We scanned extremities and breasts in an imaging region 140 mm in diameter and obtained 3D-PA images of fine blood vessels, including arterioles and venules. We could estimate whether a vessel was an artery or a vein by using the S-factor obtained from the PA images at two wavelengths, which corresponds approximately to the haemoglobin oxygen saturation. Furthermore, we observed tumour-related blood vessels around breast tumours with unprecedented resolution. In the future, clinical studies with our new PAI system will help to elucidate various mechanisms of vascular-associated diseases and events.
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Affiliation(s)
- Yoshiaki Matsumoto
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yasufumi Asao
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Japan Science and Technology Agency, ImPACT Program, Cabinet Office, Kyoto, Japan
| | - Hiroyuki Sekiguchi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Aya Yoshikawa
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomoko Ishii
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ken-Ichi Nagae
- Medical Imaging Development Center, Canon Inc., Kyoto, Japan
| | | | - Itaru Tsuge
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Susumu Saito
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masahiro Takada
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoshihiro Ishida
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masako Kataoka
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takaki Sakurai
- Department of Diagnostic Pathology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takayuki Yagi
- Japan Science and Technology Agency, ImPACT Program, Cabinet Office, Kyoto, Japan
| | - Kenji Kabashima
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shigehiko Suzuki
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tsuyoshi Shiina
- Department of Human Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masakazu Toi
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
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Eisenbrey JR, Stanczak M, Forsberg F, Mendoza-Ballesteros FA, Lyshchik A. Photoacoustic Oxygenation Quantification in Patients with Raynaud's: First-in-Human Results. ULTRASOUND IN MEDICINE & BIOLOGY 2018; 44:2081-2088. [PMID: 30207278 PMCID: PMC8994565 DOI: 10.1016/j.ultrasmedbio.2018.04.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 04/16/2018] [Accepted: 04/23/2018] [Indexed: 05/04/2023]
Abstract
The purpose of this study was to investigate the use of photoacoustic imaging for quantifying fingertip oxygenation as an approach to diagnosing and monitoring Raynaud's phenomenon. After 30 min of acclimation to room temperature, 22 patients (7 patients with secondary Raynaud's associated to Scleroderma and 15 healthy controls) provided informed consent to undergo fingertip Doppler imaging and high-frequency photoacoustic imaging before and 5, 15 and 30 min after cold stimulus (submerged hand in a 15 °C water bath for 1 min). High-frequency ultrasound and photoacoustic imaging was performed on the nail bed of each patient's second through fifth finger on their dominant hand, using a Vevo 2100 LAZR system with an LZ-250 probe (Fujifilm VisualSonics, Toronto, ON, Canada) in oxy-hemoglobin quantification mode. During each exam, volumetric data across a 3-mm span of data was acquired to produce a volumetric image of percent oxygenation and hemoglobin concentration. Changes in fingertip oxygenation between Raynaud's patients and healthy volunteers were compared, using receiver operator characteristic (ROC) analysis. Photoacoustic signal was detected in both the nail bed and nailfold in all study participants. Doppler ultrasound resulted in poor differentiation of Raynaud's patients from healthy volunteers, with an area under the ROC curve (Az) of 0.51. Photoacoustic imaging demonstrated improved accuracy at baseline (Az = 0.72), which improved when quantifying normalized changes after cold stimulus (Az = 0.89 5-min post stimulus, Az = 0.91 15-min post stimulus, and Az = 0.85 after stimulus). Oxygenation levels derived using photoacoustic imaging are able to identify patients with Raynaud's and safely evaluate their response to a cold stimulus over time.
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Affiliation(s)
- John R Eisenbrey
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, USA.
| | - Maria Stanczak
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Flemming Forsberg
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Fabian A Mendoza-Ballesteros
- Department of Medicine, Division of Rheumatology, Thomas Jefferson University, Philadelphia, PA, USA; Scleroderma Center and Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA
| | - Andrej Lyshchik
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, USA
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37
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Levine D. Can Coregistered Photoacoustic Tomography and US Be Used in Screening for Ovarian Cancer? Radiology 2018; 289:748-749. [PMID: 30204079 DOI: 10.1148/radiol.2018181851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Deborah Levine
- From the Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215
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Yamaga I, Kawaguchi-Sakita N, Asao Y, Matsumoto Y, Yoshikawa A, Fukui T, Takada M, Kataoka M, Kawashima M, Fakhrejahani E, Kanao S, Nakayama Y, Tokiwa M, Torii M, Yagi T, Sakurai T, Haga H, Togashi K, Shiina T, Toi M. Vascular branching point counts using photoacoustic imaging in the superficial layer of the breast: A potential biomarker for breast cancer. PHOTOACOUSTICS 2018; 11:6-13. [PMID: 30003041 PMCID: PMC6039965 DOI: 10.1016/j.pacs.2018.06.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 05/27/2018] [Accepted: 06/11/2018] [Indexed: 05/07/2023]
Abstract
This study aimed to identify the characteristics of the vascular network in the superficial subcutaneous layer of the breast and to analyze differences between breasts with cancer and contralateral unaffected breasts using vessel branching points (VBPs) detected by three-dimensional photoacoustic imaging with a hemispherical detector array. In 22 patients with unilateral breast cancer, the average VBP counts to a depth of 7 mm below the skin surface were significantly greater in breasts with cancer than in the contralateral unaffected breasts (p < 0.01). The ratio of the VBP count in the breasts with cancer to that in the contralateral breasts was significantly increased in patients with a high histologic grade (p = 0.03), those with estrogen receptor-negative disease (p < 0.01), and those with highly proliferative disease (p < 0.01). These preliminary findings indicate that a higher number of VBPs in the superficial subcutaneous layer of the breast might be a biomarker for primary breast cancer.
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Affiliation(s)
- Iku Yamaga
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Japan
| | | | | | - Yoshiaki Matsumoto
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Japan
| | - Aya Yoshikawa
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Japan
| | - Toshifumi Fukui
- Medical Imaging System Development Center, Canon Inc., Japan
| | - Masahiro Takada
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Japan
| | - Masako Kataoka
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Japan
| | - Masahiro Kawashima
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Japan
| | | | - Shotaro Kanao
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Japan
| | - Yoshie Nakayama
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Japan
| | - Mariko Tokiwa
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Japan
| | - Masae Torii
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Japan
| | | | - Takaki Sakurai
- Department of Diagnostic Pathology, Graduate School of Medicine, Kyoto University, Japan
| | - Hironori Haga
- Department of Diagnostic Pathology, Graduate School of Medicine, Kyoto University, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Japan
| | - Tsuyoshi Shiina
- Department of Human Health Science, Graduate School of Medicine, Kyoto University, Japan
| | - Masakazu Toi
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Japan
- Corresponding author.
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Optoacoustic Breast Imaging: Imaging-Pathology Correlation of Optoacoustic Features in Benign and Malignant Breast Masses. AJR Am J Roentgenol 2018; 211:1155-1170. [PMID: 30106610 DOI: 10.2214/ajr.17.18435] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE Optoacoustic ultrasound breast imaging is a fused anatomic and functional modality that shows morphologic features, as well as hemoglobin amount and relative oxygenation within and around breast masses. The purpose of this study is to investigate the positive predictive value (PPV) of optoacoustic ultrasound features in benign and malignant masses. SUBJECTS AND METHODS In this study, 92 masses assessed as BI-RADS category 3, 4, or 5 in 94 subjects were imaged with optoacoustic ultrasound. Each mass was scored by seven blinded independent readers according to three internal features in the tumor interior and two external features in its boundary zone and periphery. Mean and median optoacoustic ultrasound scores were compared with histologic findings for biopsied masses and nonbiopsied BI-RADS category 3 masses, which were considered benign if they were stable at 12-month follow-up. Statistical significance was analyzed using a two-sided Wilcoxon rank sum test with a 0.05 significance level. RESULTS Mean and median optoacoustic ultrasound scores for all individual internal and external features, as well as summed scores, were higher for malignant masses than for benign masses (p < 0.0001). High external scores, indicating increased hemoglobin and deoxygenation and abnormal vessel morphologic features in the tumor boundary zone and periphery, better distinguished benign from malignant masses than did high internal scores reflecting increased hemoglobin and deoxygenation within the tumor interior. CONCLUSION High optoacoustic ultrasound scores, particularly those based on external features in the boundary zone and periphery of breast masses, have high PPVs for malignancy and, conversely, low optoacoustic ultrasound scores have low PPV for malignancy. The functional component of optoacoustic ultrasound may help to overcome some of the limitations of morphologic overlap in the distinction of benign and malignant masses.
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Lin L, Hu P, Shi J, Appleton CM, Maslov K, Li L, Zhang R, Wang LV. Single-breath-hold photoacoustic computed tomography of the breast. Nat Commun 2018; 9:2352. [PMID: 29907740 PMCID: PMC6003984 DOI: 10.1038/s41467-018-04576-z] [Citation(s) in RCA: 235] [Impact Index Per Article: 39.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 04/19/2018] [Indexed: 12/22/2022] Open
Abstract
We have developed a single-breath-hold photoacoustic computed tomography (SBH-PACT) system to reveal detailed angiographic structures in human breasts. SBH-PACT features a deep penetration depth (4 cm in vivo) with high spatial and temporal resolutions (255 µm in-plane resolution and a 10 Hz 2D frame rate). By scanning the entire breast within a single breath hold (~15 s), a volumetric image can be acquired and subsequently reconstructed utilizing 3D back-projection with negligible breathing-induced motion artifacts. SBH-PACT clearly reveals tumors by observing higher blood vessel densities associated with tumors at high spatial resolution, showing early promise for high sensitivity in radiographically dense breasts. In addition to blood vessel imaging, the high imaging speed enables dynamic studies, such as photoacoustic elastography, which identifies tumors by showing less compliance. We imaged breast cancer patients with breast sizes ranging from B cup to DD cup, and skin pigmentations ranging from light to dark. SBH-PACT identified all the tumors without resorting to ionizing radiation or exogenous contrast, posing no health risks.
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Affiliation(s)
- Li Lin
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA, 91125, USA.,Department of Biomedical Engineering, Washington University in St. Louis, One Brookings Dr., St. Louis, MO, 63130, USA
| | - Peng Hu
- Department of Biomedical Engineering, Washington University in St. Louis, One Brookings Dr., St. Louis, MO, 63130, USA
| | - Junhui Shi
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA, 91125, USA
| | - Catherine M Appleton
- Breast Imaging Section, Washington University School of Medicine in St. Louis, 510 South Kingshighway Blvd, St. Louis, MO, 63108, USA
| | - Konstantin Maslov
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA, 91125, USA
| | - Lei Li
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA, 91125, USA.,Caltech Optical Imaging Laboratory, Department of Electrical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA, 91125, USA
| | - Ruiying Zhang
- Department of Biomedical Engineering, Washington University in St. Louis, One Brookings Dr., St. Louis, MO, 63130, USA
| | - Lihong V Wang
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA, 91125, USA. .,Caltech Optical Imaging Laboratory, Department of Electrical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA, 91125, USA.
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Development and clinical translation of photoacoustic mammography. Biomed Eng Lett 2018; 8:157-165. [PMID: 30603200 DOI: 10.1007/s13534-018-0070-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 04/21/2018] [Accepted: 04/23/2018] [Indexed: 10/16/2022] Open
Abstract
To practically apply photoacoustic (PA) imaging technology in medicine, we have developed prototypes of a photoacoustic mammography (PAM) device to acquire images for diagnosing breast cancer in the Kyoto University/Canon joint research project (CK project supported by MEXT, Japan). First, the basic ability of the PAM system to visualize the network of blood vessels and the Hb saturation index was evaluated using a prototype of PAM that has a flat scanning detector and is capable of simultaneously acquiring photoacoustic (PA) and ultrasound images. Next, another prototype of a PAM device with hemispherical sensors was developed to improve the visibility of the 3D structure of vessels by reducing the limited view effect. In clinical examination of breast cancer cases, the PAM system allowed 3D visualization of fine vessel networks with a spatial resolution of a half-millimeter and enabled us to determine the features of tumor-related vascular structures in human breast cancer. In addition, the oxygen saturation status of Hb was visualized using two different wavelengths, enabling more precise characterization of the tumor microenvironment. Results of clinical evaluation using our developed prototype of a PAM device confirmed that PA imaging technology has the potential to promote early detection of breast cancer, and realization of its practical use is expected in the near future.
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Wilson KE, Bachawal SV, Willmann JK. Intraoperative Resection Guidance with Photoacoustic and Fluorescence Molecular Imaging Using an Anti-B7-H3 Antibody-Indocyanine Green Dual Contrast Agent. Clin Cancer Res 2018; 24:3572-3582. [PMID: 29712688 DOI: 10.1158/1078-0432.ccr-18-0417] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 03/21/2018] [Accepted: 04/23/2018] [Indexed: 01/12/2023]
Abstract
Purpose: Breast cancer often requires surgical treatment including breast-conserving surgical resection. However, with current postsurgical histologic margin analysis, one quarter of breast cancer patients undergo reexcision to achieve negative margins corresponding to decreased local recurrence and better outcomes. Therefore, a method with high resolution and specificity for intraoperative margin assessment is needed.Experimental Design: First, quantitative immunofluorescence staining of B7-H3 expression was assessed in four pathologic stages of breast cancer progression of the MMTV-PyMT transgenic murine model. Next, an antibody-dye contrast agent, B7-H3-ICG, was injected into mice prior to surgical resection of breast cancer. Anatomic ultrasound, spectroscopic photoacoustic (sPA), and fluorescence imaging were used to guide resection of mammary glands suspected of containing cancer. Resected tissues were processed for H&E staining and pathologic assessment and compared with sPA and fluorescence imaging signals.Results: Tissue containing DCIS (46.0 ± 4.8 a.u.) or invasive carcinoma (91.7 ± 21.4 a.u.) showed significantly higher (P < 0.05) B7-H3 expression than normal and hyperplastic tissues (1.3 ± 0.8 a.u.). During image-guided surgical resection, tissue pieces assessed as normal or hyperplastic (n = 17) showed lower average sPA (3.17 ± 0.48 a.u.) and fluorescence signal [6.83E07 ± 2.00E06 (p/s)/(μW/cm²)] than DCIS and invasive carcinoma tissue (n = 63) with an average sPA signal of 23.98 ± 4.88 a.u. and an average fluorescence signal of 7.56E07 ± 1.44E06 (p/s)/(μW/cm²) with AUCs of 0.93 [95% confidence interval (CI), 0.87-0.99] and 0.71 (95% CI, 0.57-0.85), respectively.Conclusions: It was demonstrated that sPA and fluorescence molecular imaging combined with B7-H3-ICG agent can assess the disease status of tissues with high diagnostic accuracy, intraoperatively, with high resolution, sensitivity, and specificity. Clin Cancer Res; 24(15); 3572-82. ©2018 AACR.
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Affiliation(s)
- Katheryne E Wilson
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, School of Medicine, Stanford, California.
| | - Sunitha V Bachawal
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, School of Medicine, Stanford, California
| | - Jürgen K Willmann
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, School of Medicine, Stanford, California
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Nagaoka R, Tabata T, Yoshizawa S, Umemura SI, Saijo Y. Visualization of murine lymph vessels using photoacoustic imaging with contrast agents. PHOTOACOUSTICS 2018; 9:39-48. [PMID: 29707478 PMCID: PMC5914200 DOI: 10.1016/j.pacs.2018.01.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 12/22/2017] [Accepted: 01/15/2018] [Indexed: 05/07/2023]
Abstract
Metastasis frequently occurs even in the early stage of breast cancer. This research studied the feasibility of using photoacoustic (PA) imaging for identifying metastasis in the lymph vessels of mice. The photoacoustic efficiency of various contrast agents was investigated, and the influence of scattered light was evaluated by using a lymph vessel phantom. The lymph vessels of mice were then visualized using the selected contrast agents: indocyanine green (ICG) and gold nanorods (AuNR). The attenuation of the PA imaging was -1.90 dB/mm, whereas that of the fluorescence imaging was -4.45 dB/mm. The results indicate the potential of identifying sentinel lymph nodes by using PA imaging with these contrast agents.
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Affiliation(s)
- Ryo Nagaoka
- Biomedical Imaging Laboratory, Graduate School of Biomedical Engineering, Tohoku University, 6-6-05 Aramaki Aza Aoba, Aobaku, Sendai 980-8579, Japan
| | - Takuya Tabata
- Biomedical Imaging Laboratory, Graduate School of Biomedical Engineering, Tohoku University, 6-6-05 Aramaki Aza Aoba, Aobaku, Sendai 980-8579, Japan
| | - Shin Yoshizawa
- Ultrasound Enhanced Nanomedicine Laboratory, Graduate School of Biomedical Engineering, Tohoku University, 6-6-05 Aramaki Aza Aoba, Aobaku, Sendai 980-8579, Japan
| | - Shin-ichiro Umemura
- Ultrasound Enhanced Nanomedicine Laboratory, Graduate School of Biomedical Engineering, Tohoku University, 6-6-05 Aramaki Aza Aoba, Aobaku, Sendai 980-8579, Japan
| | - Yoshifumi Saijo
- Biomedical Imaging Laboratory, Graduate School of Biomedical Engineering, Tohoku University, 6-6-05 Aramaki Aza Aoba, Aobaku, Sendai 980-8579, Japan
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Vedantham S, Karellas A. Emerging Breast Imaging Technologies on the Horizon. Semin Ultrasound CT MR 2018; 39:114-121. [PMID: 29317033 DOI: 10.1053/j.sult.2017.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Early detection of breast cancers by mammography in conjunction with adjuvant therapy has contributed to reduction in breast cancer mortality. Mammography remains the "gold-standard" for breast cancer screening but is limited by tissue superposition. Digital breast tomosynthesis and more recently, dedicated breast computed tomography have been developed to alleviate the tissue superposition problem. However, all of these modalities rely upon x-ray attenuation contrast to provide anatomical images, and there are ongoing efforts to develop and clinically translate alternative modalities. These emerging modalities could provide for new contrast mechanisms and may potentially improve lesion detection and diagnosis. In this article, several of these emerging modalities are discussed with a focus on technologies that have advanced to the stage of in vivo clinical evaluation.
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Affiliation(s)
- Srinivasan Vedantham
- Department of Medical Imaging, University of Arizona College of Medicine, Banner University Medical Center, Tucson, AZ.
| | - Andrew Karellas
- Department of Medical Imaging, University of Arizona College of Medicine, Banner University Medical Center, Tucson, AZ
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Matsumoto Y, Asao Y, Yoshikawa A, Sekiguchi H, Takada M, Furu M, Saito S, Kataoka M, Abe H, Yagi T, Togashi K, Toi M. Label-free photoacoustic imaging of human palmar vessels: a structural morphological analysis. Sci Rep 2018; 8:786. [PMID: 29335512 PMCID: PMC5768743 DOI: 10.1038/s41598-018-19161-z] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 12/18/2017] [Indexed: 11/22/2022] Open
Abstract
We analysed the vascular morphology of the palm using a photoacoustic tomography (PAT) instrument with a hemispherical detector array. The three-dimensional (3D) morphology of blood vessels was determined noninvasively. Overall, 12 females and 11 males were recruited as healthy volunteers. Their ages were distributed almost evenly from 22 to 59 years. In all cases, many vascular networks were observed just beneath the skin and were determined to be veins anatomically. To analyse the major arteries, the layer containing the subcutaneous venous network was removed from the image. The analysis focused on the common and proper palmar digital arteries. We used the curvature of these arteries as a parameter to analyse their morphologies. There was no significant difference in the curvature between genders when comparing the subjects as a whole. The blood vessel curvature increased with age. Good agreement was found between the 3D numerical analysis results and the subjective evaluation of the two-dimensional (2D) projection image. The PAT system enabled visualization of the 3D features of blood vessels in the palm and noninvasive analysis of arterial tortuousness.
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Affiliation(s)
- Y Matsumoto
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Y Asao
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 606-8507, Japan
- Japan Science and Technology Agency, ImPACT Program, Cabinet Office, K's Gobancho, 7, Gobancho, Chiyoda-ku, Tokyo, 102-0076, Japan
| | - A Yoshikawa
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 606-8507, Japan
| | - H Sekiguchi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 606-8507, Japan
| | - M Takada
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 606-8507, Japan
| | - M Furu
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 606-8507, Japan
| | - S Saito
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, 53 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 606-8507, Japan
| | - M Kataoka
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 606-8507, Japan
| | - H Abe
- Medical Imaging System Development Center, Canon Inc., 3-30-2 Shimomaruko, Ohta-ku, Tokyo, 146-8501, Japan
| | - T Yagi
- Japan Science and Technology Agency, ImPACT Program, Cabinet Office, K's Gobancho, 7, Gobancho, Chiyoda-ku, Tokyo, 102-0076, Japan
| | - K Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 606-8507, Japan
| | - M Toi
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawaharacho Sakyo-ku, Kyoto, 606-8507, Japan
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van den Berg PJ, Daoudi K, Bernelot Moens HJ, Steenbergen W. Feasibility of photoacoustic/ultrasound imaging of synovitis in finger joints using a point-of-care system. PHOTOACOUSTICS 2017; 8:8-14. [PMID: 28913168 PMCID: PMC5587869 DOI: 10.1016/j.pacs.2017.08.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/21/2017] [Accepted: 08/28/2017] [Indexed: 05/05/2023]
Abstract
We evaluate a portable ultrasound and photoacoustic imaging (PAI) system for the feasibility of a point-of-care assessment of clinically evident synovitis. Inflamed and non-inflamed proximal interphalangeal joints of 10 patients were examined and compared with joints from 7 healthy volunteers. PAI scans, ultrasound power Doppler (US-PD), and clinical examination were performed. We quantified the amount of photoacoustic (PA) signal using a region of interest (ROI) drawn over the hypertrophic joint space. PAI response was increased 4 to 10 fold when comparing inflamed with contralateral non-inflamed joints and with joints from healthy volunteers (p < 0.001 for both). US-PD and PAI were strongly correlated (Spearman's ρ = 0.64, with 95% CI: 0.42, 0.79). Hence, PAI using a compact handheld probe is capable of detecting clinically evident synovitis. This motivates further investigation into the predictive value of PAI, including multispectral PAI, with other established modalities such as US-PD or MRI.
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Affiliation(s)
- Pim J. van den Berg
- Biomedical Photonic Imaging, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, PO Box 217, 7500 AE, Enschede, The Netherlands
| | - Khalid Daoudi
- Medical Ultrasound Imaging Center, department of Radiology, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Hein J. Bernelot Moens
- Ziekenhuisgroep Twente, Department of Rheumatology, Postbus 546, 7550 AM Hengelo, The Netherlands
| | - Wiendelt Steenbergen
- Biomedical Photonic Imaging, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, PO Box 217, 7500 AE, Enschede, The Netherlands
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Neuschler EI, Butler R, Young CA, Barke LD, Bertrand ML, Böhm-Vélez M, Destounis S, Donlan P, Grobmyer SR, Katzen J, Kist KA, Lavin PT, Makariou EV, Parris TM, Schilling KJ, Tucker FL, Dogan BE. A Pivotal Study of Optoacoustic Imaging to Diagnose Benign and Malignant Breast Masses: A New Evaluation Tool for Radiologists. Radiology 2017; 287:398-412. [PMID: 29178816 DOI: 10.1148/radiol.2017172228] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Purpose To compare the diagnostic utility of an investigational optoacoustic imaging device that fuses laser optical imaging (OA) with grayscale ultrasonography (US) to grayscale US alone in differentiating benign and malignant breast masses. Materials and Methods This prospective, 16-site study of 2105 women (study period: 12/21/2012 to 9/9/2015) compared Breast Imaging Reporting and Data System (BI-RADS) categories assigned by seven blinded independent readers to benign and malignant breast masses using OA/US versus US alone. BI-RADS 3, 4, or 5 masses assessed at diagnostic US with biopsy-proven histologic findings and BI-RADS 3 masses stable at 12 months were eligible. Independent readers reviewed US images obtained with the OA/US device, assigned a probability of malignancy (POM) and BI-RADS category, and locked results. The same independent readers then reviewed OA/US images, scored OA features, and assigned OA/US POM and a BI-RADS category. Specificity and sensitivity were calculated for US and OA/US. Benign and malignant mass upgrade and downgrade rates, positive and negative predictive values, and positive and negative likelihood ratios were compared. Results Of 2105 consented subjects with 2191 masses, 100 subjects (103 masses) were analyzed separately as a training population and excluded. An additional 202 subjects (210 masses) were excluded due to technical failures or incomplete imaging, 72 subjects (78 masses) due to protocol deviations, and 41 subjects (43 masses) due to high-risk histologic results. Of 1690 subjects with 1757 masses (1079 [61.4%] benign and 678 [38.6%] malignant masses), OA/US downgraded 40.8% (3078/7535) of benign mass reads, with a specificity of 43.0% (3242/7538, 99% confidence interval [CI]: 40.4%, 45.7%) for OA/US versus 28.1% (2120/7543, 99% CI: 25.8%, 30.5%) for the internal US of the OA/US device. OA/US exceeded US in specificity by 14.9% (P < .0001; 99% CI: 12.9, 16.9%). Sensitivity for biopsied malignant masses was 96.0% (4553/4745, 99% CI: 94.5%, 97.0%) for OA/US and 98.6% (4680/4746, 99% CI: 97.8%, 99.1%) for US (P < .0001). The negative likelihood ratio of 0.094 for OA/US indicates a negative examination can reduce a maximum US-assigned pretest probability of 17.8% (low BI-RADS 4B) to a posttest probability of 2% (BI-RADS 3). Conclusion OA/US increases the specificity of breast mass assessment compared with the device internal grayscale US alone. Online supplemental material is available for this article. © RSNA, 2017.
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Affiliation(s)
- Erin I Neuschler
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Reni Butler
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Catherine A Young
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Lora D Barke
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Margaret L Bertrand
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Marcela Böhm-Vélez
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Stamatia Destounis
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Pamela Donlan
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Stephen R Grobmyer
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Janine Katzen
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Kenneth A Kist
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Philip T Lavin
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Erini V Makariou
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Tchaiko M Parris
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Kathy J Schilling
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - F Lee Tucker
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
| | - Basak E Dogan
- From the Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (E.I.N.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, PO Box 208042, New Haven, CT 06520-8042 (R.B.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (C.A.Y.); Radiology Imaging Associates/Invision Sally Jobe, Englewood, Colo (L.D.B.); Solis Mammography Greensboro, Greensboro, NC (M.L.B.); Weinstein Imaging Associates, Pittsburgh, Pa (M.B.V.); Elizabeth Wende Breast Care, Rochester, NY (S.D.); Breast Care Atlanta, Atlanta, Ga (P.D.); Cleveland Clinic, Cleveland, Ohio (S.R.G.); Weill Cornell Medicine, New York, NY (J.K.); UT Health San Antonio, San Antonio, Tex (K.A.K.); Boston Biostatistics Research Foundation, Framingham, Mass (P.T.L.); Department of Radiology, MedStar Georgetown University Hospital, Washington, DC (E.V.M.); Breastlink Temecula Valley, Murrieta, Calif (T.M.P.); Boca Raton Regional Hospital, Boca Raton, Fla (K.J.S.); Virginia Biomedical Laboratories, LLC, Wirtz, Va (F.L.T.); and Department of Radiology, The UT Southwestern Medical Center, Dallas, Tex (B.E.D.)
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Xiao J, Luo X, Peng K, Wang B. Improved back-projection method for circular-scanning-based photoacoustic tomography with improved tangential resolution. APPLIED OPTICS 2017; 56:8983-8990. [PMID: 29131179 DOI: 10.1364/ao.56.008983] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 10/11/2017] [Indexed: 06/07/2023]
Abstract
While photoacoustic computed tomography (PACT) is generally built with planar transducers of finite size, most current reconstruction algorithms assume the transducer to be an ideal point, which leads to a spinning blur in the consequently obtained PACT images due to the model mismatch. In this work, we put forward an improved back-projection method that factors in the geometry of the transducers to improve the tangential resolution for the reconstruction of 2D circular-scanning-based photoacoustic tomography. Extensive simulations and experiments were carried out to study the adaptability and stability of the proposed method. Results show that this method can effectively restore the tangential distortion of the PACT image for both simulated and experimental data. Results indicated that the improvement of the tangential resolution is more obvious for transducers with larger size. We also demonstrated the application of this method to transducers other than planar, and results show that the reconstructed image quality can be significantly affected by the shape and position of the transducers used. This study may help to guide the selection of transducer and design of scanning strategy in PACT.
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Deng L, Cai X, Sheng D, Yang Y, Strohm EM, Wang Z, Ran H, Wang D, Zheng Y, Li P, Shang T, Ling Y, Wang F, Sun Y. A Laser-Activated Biocompatible Theranostic Nanoagent for Targeted Multimodal Imaging and Photothermal Therapy. Am J Cancer Res 2017; 7:4410-4423. [PMID: 29158836 PMCID: PMC5695140 DOI: 10.7150/thno.21283] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/16/2017] [Indexed: 12/13/2022] Open
Abstract
Multifunctional nanoparticles have been reported for cancer detection and treatment currently. However, the accurate diagnosis and efficient treatment for tumors are still not satisfied. Here we report on the development of targeted phase change multimodal polymeric nanoparticles for the imaging and treatment of HER2-positive breast cancer. Methods: We evaluated the multimodal imaging capabilities of the prepared nanoparticles in vitro using agar-based phantoms. The targeting performance and cytotoxicity of the nanoparticles were examined in cell culture using SKBR3 (over-expressing HER2) and MDA-MB-231 (HER2 negative) cells. We then tested the magnetic resonance (MR)/ photoacoustic (PA)/ ultrasound (US)/ near-infrared fluorescence (NIRF) multimodal imaging properties and photothermal effect of the nanoparticles in vivo using a SKBR3 breast xenograft model in nude mice. Tissue histopathology and immunofluorescence were also conducted. Results: Both in vitro and in vivo systematical studies validated that the hybrid nanoparticles can be used as a superb MR/US/PA/NIRF contrast agent to simultaneously diagnose and guide tumor photothermal therapy (PTT). When irradiated by a near infrared laser, the liquid PFP vaporizes to a gas, rapidly expelling the contents and damaging surrounding tissues. The resulting micro-sized bubbles provide treatment validation through ultrasound imaging. Localization of DIR and SPIO in the tumor region facilitate photothermal therapy for targeted tumor destruction. The mice treated with HER2 targeted nanoparticles had a nearly complete response to treatment, while the controls showed continued tumor growth. Conclusion: This novel theranostic agent may provide better diagnostic imaging and therapeutic potential than current methods for treating HER2-positive breast cancer.
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Ai M, Shu W, Salcudean T, Rohling R, Abolmaesumi P, Tang S. Design of high energy laser pulse delivery in a multimode fiber for photoacoustic tomography. OPTICS EXPRESS 2017; 25:17713-17726. [PMID: 28789263 DOI: 10.1364/oe.25.017713] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
In photoacoustic tomography (PAT), delivering high energy pulses through optical fiber is critical for achieving high quality imaging. A fiber coupling scheme with a beam homogenizer is demonstrated for coupling high energy pulses in a single multimode fiber. This scheme can benefit PAT applications that require miniaturized illumination or internal illumination with a small fiber. The beam homogenizer is achieved by using a cross cylindrical lens array, which provides a periodic spatial modulation on the phase of the input light. Thus the lens array acts as a phase grating which diffracts the beam into a 2D diffraction pattern. Both theoretical analysis and experiments demonstrate that the focused beam can be split into a 2D spot array that can reduce the peak power on the fiber tip surface and thus enhance the coupling performance. The theoretical analysis of the intensity distribution of the focused beam is carried out by Fourier optics. In experiments, coupled energy at 48 mJ/pulse and 60 mJ/pulse have been achieved and the corresponding coupling efficiency is 70% and 90% in a 1000-μm and a 1500-μm-core-diameter fiber, respectively. The high energy pulses delivered by the multimode fiber are further tested for PAT imaging in phantoms. PAT imaging of a printed dot array shows a large illumination area of 7 cm2 under 5 mm thick chicken breast tissue. In vivo imaging is also demonstrated on the human forearm. The large improvement in coupling energy can potentially benefit PAT with single fiber delivery to achieve large area imaging and deep penetration detection.
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