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Lee J, Kubelick KP, Choe A, Emelianov SY. Photoacoustic-guided ultrasound thermal imaging without prior knowledge of tissue composition. PHOTOACOUSTICS 2023; 33:100554. [PMID: 37693296 PMCID: PMC10492200 DOI: 10.1016/j.pacs.2023.100554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/23/2023] [Accepted: 09/01/2023] [Indexed: 09/12/2023]
Abstract
Thermal strain imaging (TSI) is a widely investigated ultrasound (US) thermometry technique that is based on the temperature-dependent change in speed of sound. However, a major challenge of TSI is a calibration process to account for material-dependent thermal strain. In this study, we leverage nanoparticle (NP)-mediated photoacoustic (PA) thermometry to calibrate thermal strain and guide US thermal imaging. By controlling the molecular composition of the sub-micrometer layer surrounding the NPs, PA thermometry becomes independent of the thermal characteristics of the overall background tissue where the NPs reside. Thus accurate temperature measurements are obtainable from sparse NP-mediated PA signals. These measurements are used to guide TSI, allowing US thermometry to produce an expanded temperature map over the entire region of interest without prior knowledge of tissue composition. Our feasibility study in tissue-mimicking phantoms demonstrates the potential to improve TSI by integrating a PA-based calibration method that complements and guides US thermometry.
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Affiliation(s)
- Jeungyoon Lee
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Kelsey P Kubelick
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Ayoung Choe
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
| | - Stanislav Y Emelianov
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, USA
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2
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Peng K, Wang Y, Li L, Zhang J, Chen H, Xiao J. In vivo photothermal therapy monitored by multi-position calibrated photoacoustic thermometer. PHOTOACOUSTICS 2023; 31:100501. [PMID: 37180960 PMCID: PMC10172711 DOI: 10.1016/j.pacs.2023.100501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 04/19/2023] [Accepted: 04/26/2023] [Indexed: 05/16/2023]
Abstract
With the ability of monitoring both temperature and photothermal agents, the photoacoustic (PA) imaging is a promising guiding tool for the photothermal therapy (PTT). The calibration line which depicts the relative variation of PA amplitude with the temperature should be obtained before using PA thermometer. In existing study, a calibration line was generated based on the data from one spatial position, and used in the whole region of interesting (ROI). However, the generalization of this calibration line in ROI was not verified, especially for ROI with heterogeneous tissues. Moreover, the relationship between the distributions of photothermal agents and effective treatment area is not clear, hindering using photothermal agents' distribution to optimize the administration-therapy interval. In this study, the distribution of effective photothermal agents and temperature in subcutaneously transplanted tumor mouse models were continuously monitored by 3D photoacoustic/ ultrasonic dual-modality imaging in 8 h after administration. With multiple micro-temperature probes in tumor and surrounding normal tissue, the PA thermometer was calibrated and evaluated at multiple spatial positions for the first time. The generalization in homologous tissue and tissue specificity in heterogeneous tissues of the PA thermometer calibration line were verified. Our study not only validated the effectivity of PA thermometer by proving the generalization of calibration line, but also removes a major obstacle that prevents applying the PA thermometer to a heterogeneous tissues ROI. The positive correlation between the proportion of effective treatment area and the proportion of effective photothermal agent area in the tumor was observed. Since the latter can be monitored with fast PA imaging, PA imaging can be employed as a convenient tool for seeking optimal administration-treatment interval.
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Affiliation(s)
- Kuan Peng
- Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha 410083, China
| | - Yongjun Wang
- Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha 410083, China
| | - Lingfeng Li
- Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha 410083, China
| | - Jiaxi Zhang
- Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha 410083, China
| | - Haobin Chen
- Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha 410083, China
| | - Jiaying Xiao
- Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha 410083, China
- Shenzhen Research Institute, Central South University, Shenzhen 518057, China
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Corresponding author at: Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha 410083, China.
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3
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Mendez-Gonzalez D, Lifante J, Zabala Gutierrez I, Marin R, Ximendes E, Sanz-de Diego E, Iglesias-de la Cruz MC, Teran FJ, Rubio-Retama J, Jaque D. Optomagnetic nanofluids for controlled brain hyperthermia: a critical study. NANOSCALE 2022; 14:16208-16219. [PMID: 36281691 DOI: 10.1039/d2nr03413a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Optomagnetic nanofluids (OMNFs) are colloidal dispersions of nanoparticles (NPs) with combined magnetic and optical properties. They are especially appealing in biomedicine since they can be used as minimally invasive platforms for controlled hyperthermia treatment of otherwise difficultly accessible tumors such as intracranial ones. On the one hand, magnetic NPs act as heating mediators when subjected to alternating magnetic fields or light irradiation. On the other hand, suitably tailored luminescent NPs can provide a precise and remote thermal readout in real time. The combination of heating and thermometric properties allows, in principle, to precisely monitor the increase in the temperature of brain tumors up to the therapeutic level, without causing undesired collateral damage. In this work we demonstrate that this view is an oversimplification since it ignores the presence of relevant interactions between magnetic (γ-Fe2O3 nanoflowers) and luminescent nanoparticles (Ag2S NPs) that result in a detrimental alteration of their physicochemical properties. The magnitude of such interactions depends on the interparticle distance and on the surface properties of nanoparticles. Experiments performed in mouse brains (phantoms and ex vivo) revealed that OMNFs cannot induce relevant heating under alternating magnetic fields and fail to provide reliable temperature reading. In contrast, we demonstrate that the use of luminescent nanofluids (containing only Ag2S NPs acting as both photothermal agents and nanothermometers) stands out as a better alternative for thermally monitored hyperthermia treatment of brain tumors in small animal models.
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Affiliation(s)
- Diego Mendez-Gonzalez
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramon y Cajal 2, Madrid, 28040, Spain.
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. De Colmenar Viejo, Km. 9100, Madrid, 28034, Spain.
| | - José Lifante
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. De Colmenar Viejo, Km. 9100, Madrid, 28034, Spain.
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, 28029, Spain
| | - Irene Zabala Gutierrez
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramon y Cajal 2, Madrid, 28040, Spain.
| | - Riccardo Marin
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. De Colmenar Viejo, Km. 9100, Madrid, 28034, Spain.
- NanoBIG, Departamento de Física de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente 7, Madrid, 28049, Spain
| | - Erving Ximendes
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. De Colmenar Viejo, Km. 9100, Madrid, 28034, Spain.
- NanoBIG, Departamento de Física de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente 7, Madrid, 28049, Spain
| | - Elena Sanz-de Diego
- IMDEA Nanociencia, Campus Universitario de Cantoblanco, Calle Faraday 9, 28049 Madrid, Spain
| | - M Carmen Iglesias-de la Cruz
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. De Colmenar Viejo, Km. 9100, Madrid, 28034, Spain.
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, 28029, Spain
| | - Francisco J Teran
- IMDEA Nanociencia, Campus Universitario de Cantoblanco, Calle Faraday 9, 28049 Madrid, Spain
- Nanobiotecnología (IMDEA-Nanociencia), Unidad Asociada al Centro Nacional de Biotecnología (CSIC), 28049 Madrid, Spain
| | - Jorge Rubio-Retama
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramon y Cajal 2, Madrid, 28040, Spain.
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. De Colmenar Viejo, Km. 9100, Madrid, 28034, Spain.
| | - Daniel Jaque
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. De Colmenar Viejo, Km. 9100, Madrid, 28034, Spain.
- NanoBIG, Departamento de Física de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente 7, Madrid, 28049, Spain
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Schwartz‐Duval AS, Sokolov KV. Prospecting Cellular Gold Nanoparticle Biomineralization as a Viable Alternative to Prefabricated Gold Nanoparticles. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105957. [PMID: 35508715 PMCID: PMC9284136 DOI: 10.1002/advs.202105957] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 03/17/2022] [Indexed: 06/14/2023]
Abstract
Gold nanoparticles (GNPs) have shown considerable potential in a vast number of biomedical applications. However, currently there are no clinically approved injectable GNP formulations. Conversely, gold salts have been used in the clinic for nearly a century. Further, there is evidence of GNP formation in patients treated with gold salts (i.e., chrysiasis). Recent reports evaluating this phenomenon in human cells and in murine models indicate that the use of gold ions for in situ formation of theranostic GNPs could greatly improve the delivery within dense biological tissues, increase efficiency of intracellular gold uptake, and specificity of GNP formation within cancer cells. These attributes in combination with safe clinical application of gold salts make this process a viable strategy for clinical translation. Here, the first summary of the current knowledge related to GNP biomineralization in mammalian cells is provided along with critical assessment of potential biomedical applications of this newly emergent field.
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Affiliation(s)
- Aaron S. Schwartz‐Duval
- Department of Imaging PhysicsThe University of Texas MD Anderson Cancer Center1515 Holcombe BoulevardHoustonTX77030USA
| | - Konstantin V. Sokolov
- Department of Imaging PhysicsThe University of Texas MD Anderson Cancer Center1515 Holcombe BoulevardHoustonTX77030USA
- The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences6767 Bertner AveHoustonTX77030USA
- Department of BioengineeringRice University6100 Main St.HoustonTX77030USA
- Department of Biomedical EngineeringThe University of Texas at Austin107 W Dean Keeton St.AustinTX78712USA
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5
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Kosir J, Vella D, Lukac M, Jezersek M. Towards personalized and versatile monitoring of temperature fields within heterogeneous tissues during laser therapies. BIOMEDICAL OPTICS EXPRESS 2021; 12:4530-4543. [PMID: 34457430 PMCID: PMC8367272 DOI: 10.1364/boe.428028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/07/2021] [Accepted: 06/17/2021] [Indexed: 05/05/2023]
Abstract
Advancements in medical laser technology have paved the way for its widespread acceptance in a variety of treatments and procedures. Selectively targeting particular tissue structures with minimally invasive procedures limits the damage to surrounding tissue and allows for reduced post-procedural downtime. In many treatments that are hyperthermia-based, the efficiency depends on the achieved temperature within the targeted tissues. Current approaches for monitoring subdermal temperature distributions are either invasive, complex, or offer inadequate spatial resolution. Numerical studies are often therapy-tailored and source tissue parameters from the literature, lacking versatility and a tissue-specific approach. Here, we show a protocol that estimates the temperature distribution within the tissue based on a thermographic recording of its surface temperature evolution. It couples a time-dependent matching algorithm and thermal-diffusion-based model, while recognizing tissue-specific characteristics yielded by a fast calibration process. The protocol was employed during hyperthermic laser treatment performed ex-vivo on a heterogeneous porcine tissue, and in-vivo on a human subject. In both cases the calibrated thermal parameters correlate with the range of values reported by other studies. The matching algorithm sufficiently reproduced the temperature dynamics of heterogeneous tissue. The estimated temperature distributions within ex-vivo tissue were validated by simultaneous reference measurements, and the ones estimated in-vivo reveal a distribution trend that correlates well with similar studies. The presented method is versatile, supported by the protocol for tissue-specific tailoring, and can readily be implemented for temperature monitoring of various hyperthermia-based procedures by means of recording the surface temperature evolution with a miniature thermal camera implemented within a handheld laser scanner or similar.
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Affiliation(s)
- Jure Kosir
- Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, Ljubljana, Slovenia
| | - Daniele Vella
- Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, Ljubljana, Slovenia
| | - Matjaz Lukac
- Department of Complex Matter, Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia
- Fotona d.o.o., Stegne 7, Ljubljana, Slovenia
| | - Matija Jezersek
- Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, Ljubljana, Slovenia
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6
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Non-contact monitoring of the depth temperature profile for medical laser scanning technologies. Sci Rep 2020; 10:20242. [PMID: 33219279 PMCID: PMC7679450 DOI: 10.1038/s41598-020-77283-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/05/2020] [Indexed: 11/10/2022] Open
Abstract
Medical treatments such as high-intensity focused ultrasound, hyperthermic laser lipolysis or radiofrequency are employed as a minimally invasive alternatives for targeted tissue therapies. The increased temperature of the tissue triggers various thermal effects and leads to an unavoidable damage. As targeted tissues are generally located below the surface, various approaches are utilized to prevent skin layers from overheating and irreparable thermal damages. These procedures are often accompanied by cooling systems and protective layers accounting for a non-trivial detection of the subsurface temperature peak. Here, we show a temperature peak estimation method based on infrared thermography recording of the surface temperature evolution coupled with a thermal-diffusion-based model and a time-dependent data matching algorithm. The performance of the newly developed method was further showcased by employing hyperthermic laser lipolysis on an ex-vivo porcine fat tissue. Deviations of the estimated peak temperature remained below 1 °C, as validated by simultaneous measurement of depth temperature field within the tissue. Reconstruction of the depth profile shows a good reproducibility of the real temperature distribution with a small deviation of the peak temperature position. A thermal camera in combination with the time-dependent matching bears the scope for non-contact monitoring of the depth temperature profile as fast as 30 s. The latest demand for miniaturization of thermal cameras provides the possibility to embed the model in portable thermal scanners or medical laser technologies for improving safety and efficiency.
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Maltais-Tariant R, Boudoux C, Uribe-Patarroyo N. Real-time co-localized OCT surveillance of laser therapy using motion corrected speckle decorrelation. BIOMEDICAL OPTICS EXPRESS 2020; 11:2925-2950. [PMID: 32637233 PMCID: PMC7316020 DOI: 10.1364/boe.385654] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/19/2020] [Accepted: 04/09/2020] [Indexed: 05/27/2023]
Abstract
We present a system capable of real-time delivery and monitoring of laser therapy by imaging with optical coherence tomography (OCT) through a double-clad fiber (DCF). A double-clad fiber coupler is used to inject and collect OCT light into the core of a DCF and inject the therapy light into its larger inner cladding, allowing for both imaging and therapy to be perfectly coregistered. Monitoring of treatment depth is achieved by calculating the speckle intensity decorrelation occurring during tissue coagulation. Furthermore, an analytical noise correction was used on the correlation to extend the maximum monitoring depth. We also present a method for correcting motion-induced decorrelation using a lookup table. Using the value of the noise- and motion-corrected correlation coefficient in a novel approach, our system is capable of identifying the depth of thermal coagulation in real time and automatically shut the therapy laser off when the targeted depth is reached. The process is demonstrated ex vivo in rat tongue and abdominal muscles for depths ranging from 500 µm to 1000 µm with induced motion in real time.
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Affiliation(s)
- Raphaël Maltais-Tariant
- Polytechnique Montréal, Department of Engineering Physics, 2900 Boulevard Edouard-Montpetit, Montreal, Qc, Canada
| | - Caroline Boudoux
- Polytechnique Montréal, Department of Engineering Physics, 2900 Boulevard Edouard-Montpetit, Montreal, Qc, Canada
- Castor Optics Inc., 361 Boul Montpellier, St-Laurent, Qc, Canada
| | - Néstor Uribe-Patarroyo
- Wellman Center for Photomedicine, Harvard Medical School and Massachusetts General Hospital, 40 Blossom Street, Boston, Massachusetts 02114, USA
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Raiko J, Koskensalo K, Sainio T. Imaging-based internal body temperature measurements: The journal Temperature toolbox. Temperature (Austin) 2020; 7:363-388. [PMID: 33251282 PMCID: PMC7678923 DOI: 10.1080/23328940.2020.1769006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/08/2020] [Accepted: 05/11/2020] [Indexed: 12/27/2022] Open
Abstract
Noninvasive imaging methods of internal body temperature are in high demand in both clinical medicine and physiological research. Thermography and thermometry can be used to assess tissue temperature during thermal therapies: ablative and hyperthermia treatments to ensure adequate temperature rise in target tissues but also to avoid collateral damage by heating healthy tissues. In research use, measurement of internal body temperature enables us the production of thermal maps on muscles, internal organs, and other tissues of interest. The most used methods for noninvasive imaging of internal body temperature are based on different parameters acquired with magnetic resonance imaging, ultrasound, computed tomography, microwave radiometry, photoacoustic imaging, and near-infrared spectroscopy. In the current review, we examine the aforementioned imaging methods, their use in estimating internal body temperature in vivo with their advantages and disadvantages, and the physical phenomena the thermography or thermometry modalities are based on.
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Affiliation(s)
- Juho Raiko
- Turku PET Centre, University of Turku, Turku, Finland
- Department of Nutrition and Movement Sciences, Maastricht University, Maastricht, The Netherlands
| | - Kalle Koskensalo
- Department of Medical Physics, Turku University Hospital, Turku, Finland
| | - Teija Sainio
- Department of Medical Physics, Turku University Hospital, Turku, Finland
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Park S, Hwang J, Park JE, Ahn YC, Kang HW. Application of Ultrasound Thermal Imaging for Monitoring Laser Ablation in Ex Vivo Cardiac Tissue. Lasers Surg Med 2019; 52:218-227. [PMID: 31493345 DOI: 10.1002/lsm.23157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND AND OBJECTIVE Laser ablation can be used to treat atrial fibrillation by thermally isolating pulmonary veins. In this study, we evaluated the feasibility of high-resolution (<1 mm) ultrasound thermal imaging to monitor spatial temperature distribution during laser ablation on ex vivo cardiac tissue. STUDY DESIGN/MATERIALS AND METHODS Laser ablation (808 nm) was performed on five porcine cardiac tissue samples. A thermocouple was used to measure the interstitial tissue temperature during the laser ablation process. Tissue-strain-based ultrasound thermal imaging was conducted to monitor the spatial distribution of the temperature in the cardiac tissue. The tissue temperature was estimated from the time shifts of ultrasound signals owing to the changes in the speed of sound and was compared with the measured temperature. The temperature estimation coefficient k of porcine cardiac tissue was calculated from the estimated thermal strain and the measured temperature. The degree of tissue coagulation (temperatures > 50°C) was derived from the estimated temperature and was compared with that of the tested cardiac tissue. RESULTS The estimated tissue temperature using strain-based ultrasound thermal imaging at a depth of 1 mm agreed with thermocouple measurements. During the 30-second period of the laser ablation process, the estimated tissue temperature increased from 25 to 70°C at a depth of 0.1 mm, while the estimated temperature at a depth of 1 mm increased up to 46°C. Owing to the uncertainty of the coefficient k, the k value of the porcine cardiac tissue varied from 160 to 220°C with temperature changes of up to 20°C. The estimated coagulation region in the ultrasound thermal imaging was 20% wider (+0.6 mm) but 9% shallower (-0.1 mm) than the measured region of the ablated porcine cardiac tissue. CONCLUSIONS The current study demonstrated the feasibility of temperature monitoring with the use of ultrasound thermal imaging during the laser ablation on ex vivo porcine cardiac tissue. The high-resolution ultrasound thermal imaging could map the spatial distribution of the tissue temperature. The proposed method can be used to monitor the temperature and thermal coagulation to achieve effective laser ablation for atrial fibrillation. Lasers Surg. Med. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Suhyun Park
- School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06974, South Korea
| | - Jieun Hwang
- Interdisciplinary Program of Marine-Bio, Electrical & Mechanical Engineering, Pukyong National University, Busan, 48513, South Korea
| | - Jung-Eun Park
- Interdisciplinary Program of Marine-Bio, Electrical & Mechanical Engineering, Pukyong National University, Busan, 48513, South Korea
| | - Yeh-Chan Ahn
- Interdisciplinary Program of Marine-Bio, Electrical & Mechanical Engineering, Pukyong National University, Busan, 48513, South Korea.,Department of Biomedical Engineering and Center for Marine-Integrated Biomedical Technology (BK21 Plus), Pukyong National University, Busan, 48513, South Korea
| | - Hyun Wook Kang
- Interdisciplinary Program of Marine-Bio, Electrical & Mechanical Engineering, Pukyong National University, Busan, 48513, South Korea.,Department of Biomedical Engineering and Center for Marine-Integrated Biomedical Technology (BK21 Plus), Pukyong National University, Busan, 48513, South Korea
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Duan T, Lan H, Zhong H, Zhou M, Zhang R, Gao F. Optical spectroscopic ultrasound displacement imaging. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2018; 2018:4792-4795. [PMID: 30441418 DOI: 10.1109/embc.2018.8513136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Photoacoustic imaging has been intensively studied in recent years, and many of the achievements have already been applied in important biomedical and clinical applications, e.g. spectroscopic photoacoustic imaging to extract functional and molecular information. However, spectroscopic photoacoustic imaging requires expensive and bulky tunable laser source, which severely hinder its further development towards portable device. In this paper, we propose a novel imaging method, named optical spectroscopic ultrasound displacement (OSUD) imaging, which enables optical spectroscopic imaging in deep scattering tissue using multiple low-cost continuous-wave laser sources and ultrasound imaging equipment. The principle of the OSUD imaging method will be introduced, and followed by preliminary experimental results. The OSUD imaging may provide another pathway to provide spectroscopic optical absorption contrast in deep scattering tissue beyond commonly used photoacoustic imaging.
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Novelli F, Chon JWM, Davis JA. Terahertz thermometry of gold nanospheres in water. OPTICS LETTERS 2016; 41:5801-5804. [PMID: 27973506 DOI: 10.1364/ol.41.005801] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The photo-thermal effects of plasmonic nanoparticles are promising for cancer therapies. These treatments would greatly benefit from real-time, multi-scale temperature mapping by non-invasive means. Here we show that intense terahertz time domain spectroscopy can be used as a non-contact and high-resolution thermometer of water solutions. Using this technique, we measure the temperature change, triggered by femtosecond amplified laser pulses, of a solution of gold nanospheres in water. Extensions of this ultra-fast and non-invasive technique could open the door to real-time micro-thermometry of single cells without fluorescent labels.
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12
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Fu G, Zhu L, Yang K, Zhuang R, Xie J, Zhang F. Diffusion-Weighted Magnetic Resonance Imaging for Therapy Response Monitoring and Early Treatment Prediction of Photothermal Therapy. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5137-47. [PMID: 26845246 PMCID: PMC6375691 DOI: 10.1021/acsami.5b11936] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Photothermal therapy (PTT) as a relatively new cancer treatment method has attracted worldwide attention. Previous research on PTT has focused on its therapy efficiency and selectivity. The early prognosis of PTT, which is pivotal for the assessment of the treatment and the therapy stratification, however, has been rarely studied. In the present study, we investigated diffusion-weighted magnetic resonance imaging (DW-MRI) as a tool for therapy monitoring and early prognosis of PTT. To this end, we injected PEGylated graphene oxide (GO-PEG) or iron oxide deposited graphene oxide (GO-IONP-PEG) to 4T1 tumor models and irradiated the tumors at different drug-light intervals to induce PTT. For GO-IONP-PEG injected animals, we also included therapy arms where an external magnetic field was applied to the tumors to improve the delivery of the nanoparticle transducers. DW-MRI was performed at different time points after PTT and the tumor apparent diffusion coefficients (ADCs) were analyzed and compared. Our studies show that photothermal agents, magnetic guidance, and drug-light intervals can all affect PTT treatment efficacy. Impressively, ADC value changes at early time points after PTT (less than 48 h) were found to be well-correlated with tumor growth suppression that was apparent days or weeks later. The changes were most sensitive to conditions that can extend the survival for more than 4 weeks, in which cases the 48 h ADC values were increased by more than 80%. These studies demonstrate for the first time that DW-MRI can be an accurate prognosis tool for PTT, suggesting an important role it can play in the future PTT evaluation and clinical translation of the modality.
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Affiliation(s)
- Guifeng Fu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, Fujian 361005, China
| | - Lei Zhu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, Fujian 361005, China
| | - Kai Yang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, China
| | - Rongqiang Zhuang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, Fujian 361005, China
| | - Jin Xie
- Department of Chemistry, University of Georgia, Athens, United States
- Bio-Imaging Research Center, University of Georgia, Athens, United States
| | - Fan Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, Fujian 361005, China
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13
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Gharatape A, Davaran S, Salehi R, Hamishehkar H. Engineered gold nanoparticles for photothermal cancer therapy and bacteria killing. RSC Adv 2016. [DOI: 10.1039/c6ra18760a] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Gold nanoparticle mediated photothermal therapy in future medicine.
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Affiliation(s)
- Alireza Gharatape
- Department of Medical Nanotechnology
- School of Advanced Medical Science
- Tabriz University of Medical Science
- Tabriz
- Iran
| | - Soodabeh Davaran
- Drug Applied Research Center and Department of Medicinal Chemistry
- Faculty of Pharmacy
- Tabriz University of Medical Science
- Tabriz
- Iran
| | - Roya Salehi
- Research Center for Pharmaceutical Nanotechnology and Department of Medical Nanotechnology
- School of Advanced Medical Science
- Tabriz University of Medical Science
- Tabriz
- Iran
| | - Hamed Hamishehkar
- Drug Applied Research Center
- Tabriz University of Medical Science
- Tabriz
- Iran
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Mallidi S, Kim S, Karpiouk A, Joshi PP, Sokolov K, Emelianov S. Visualization of molecular composition and functionality of cancer cells using nanoparticle-augmented ultrasound-guided photoacoustics. PHOTOACOUSTICS 2015; 3:26-34. [PMID: 25893171 PMCID: PMC4398809 DOI: 10.1016/j.pacs.2014.12.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 12/05/2014] [Accepted: 12/11/2014] [Indexed: 05/07/2023]
Abstract
Assessment of molecular signatures of tumors in addition to their anatomy and morphology is desired for effective diagnostic and therapeutic procedures. Development of in vivo imaging techniques that can identify and monitor molecular composition of tumors remains an important challenge in pre-clinical research and medical practice. Here we present a molecular photoacoustic imaging technique that can visualize the presence and activity of an important cancer biomarker - epidermal growth factor receptor (EGFR), utilizing the effect of plasmon resonance coupling between molecular targeted gold nanoparticles. Specifically, spectral analysis of photoacoustic images revealed profound changes in the optical absorption of systemically delivered EGFR-targeted gold nanospheres due to their molecular interactions with tumor cells overexpressing EGFR. In contrast, no changes in optical properties and, therefore, photoacoustic signal, were observed after systemic delivery of non-targeted gold nanoparticles to the tumors. The results indicate that multi-wavelength photoacoustic imaging augmented with molecularly targeted gold nanoparticles has the ability to monitor molecular specific interactions between nanoparticles and cell-surface receptors, allowing visualization of the presence and functional activity of tumor cells. Furthermore, the approach can be used for other cancer cell-surface receptors such as human epidermal growth factor receptor 2 (HER2). Therefore, ultrasound-guided molecular photoacoustic imaging can potentially aid in tumor diagnosis, selection of customized patient-specific treatment, and monitor the therapeutic progression and outcome in vivo.
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Affiliation(s)
- Srivalleesha Mallidi
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, United States
| | - Seungsoo Kim
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, United States
| | - Andrei Karpiouk
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, United States
| | - Pratixa P. Joshi
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, United States
| | - Konstantin Sokolov
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, United States
- Department of Imaging Physics, University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, United States
| | - Stanislav Emelianov
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, United States
- Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX 78712, United States
- Department of Imaging Physics, University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, United States
- Corresponding author at: Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, United States. Tel.: +1 512 773 2913.
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Abstract
In this review we present the current status of ultrasound thermometry and ablation monitoring, with emphasis on the diverse approaches published in the literature and with an eye on which methods are closest to clinical reality. It is hoped that this review will serve as a guide to the expansion of sonographic methods for treatment monitoring and thermometry since the last brief review in 2007.
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Affiliation(s)
- Matthew A. Lewis
- Department of Radiology, UT Southwestern Medical Center at Dallas
| | - Robert M. Staruch
- Department of Radiology, UT Southwestern Medical Center at Dallas
- Ultrasound Imaging & Interventions, Philips Research North America
| | - Rajiv Chopra
- Department of Radiology, UT Southwestern Medical Center at Dallas
- Advanced Imaging Research Center, UT Southwestern Medical Center at Dallas
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Min M, Shi Y, Ma H, Huang H, Shi J, Chen X, Liu Y, Wang L. Polymer-Nanoparticle Composites Composed of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and Coated Silver Nanoparticles. J MACROMOL SCI B 2015. [DOI: 10.1080/00222348.2015.1011063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Saccomandi P, Schena E, Silvestri S. Techniques for temperature monitoring during laser-induced thermotherapy: an overview. Int J Hyperthermia 2013; 29:609-19. [PMID: 24032415 DOI: 10.3109/02656736.2013.832411] [Citation(s) in RCA: 164] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Laser-induced thermotherapy (LITT) is a hyperthermic procedure recently employed to treat cancer in several organs. The amount of coagulated tissue depends on the temperature distribution around the applicator, which plays a crucial role for an optimal outcome: the removal of the whole neoplastic tissue, whilst preventing damage to the surrounding healthy tissue. Although feedback concerning tissue temperature could be useful to drive the physician in the adjustment of laser settings and treatment duration, LITT is usually performed without real-time monitoring of tissue temperature. During recent decades, many thermometric techniques have been developed to be used during thermal therapies. This paper provides an overview of techniques and sensors employed for temperature measurement during tissue hyperthermia, focusing on LITT, and an investigation of their performances in this application. The paper focuses on the most promising and widespread temperature monitoring techniques, splitting them into two groups: the former includes invasive techniques based on the use of thermocouples and fibre-optic sensors; the second analyses non-invasive methods, i.e. magnetic resonance imaging-, computerised tomography- and ultrasound-based thermometry. Background information on measuring principle, medical applications, advantages and weaknesses of each method are provided and discussed.
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Affiliation(s)
- Paola Saccomandi
- Unit of Measurements and Biomedical Instrumentation, Centre for Integrated Research, University Campus Bio-Medico , Rome , Italy
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18
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Magnetic gold-nanorod/ PNIPAAmMA nanoparticles for dual magnetic resonance and photoacoustic imaging and targeted photothermal therapy. Biomaterials 2013; 34:5651-60. [DOI: 10.1016/j.biomaterials.2013.03.085] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 03/27/2013] [Indexed: 11/21/2022]
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19
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Qin Z, Bischof JC. Thermophysical and biological responses of gold nanoparticle laser heating. Chem Soc Rev 2012; 41:1191-217. [DOI: 10.1039/c1cs15184c] [Citation(s) in RCA: 433] [Impact Index Per Article: 36.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Homan KA, Chen J, Schiano A, Mohamed M, Willets KA, Murugesan S, Stevenson KJ, Emelianov S. Silver-Polymer Composite Stars: Synthesis and Applications. ADVANCED FUNCTIONAL MATERIALS 2011; 21:1673-1680. [PMID: 21660240 PMCID: PMC3109509 DOI: 10.1002/adfm.201001556] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Colloidal "silver stars" were synthesized upon poly(lactic-co-glycolic) acid nanosphere templates via a facile two-step silver reduction method. Myriad dendrimer-like Ag star morphologies were synthesized by varying the amount of poly(vinyl alcohol) and trisodium citrate used during silver reduction. Scanning electron microscopy studies revealed that star-shaped silver-polymer composites possessing nanoscopic, fractal morphologies with diameters ranging from 500 nm to 7 μm were produced. These composites have broad applications from antibacterial agents to catalysis; two such applications were tested here. Surface-enhanced Raman spectroscopy (SERS) studies showed multiple hot spots of SERS activity within a single star. Electrochemical catalysis experiments demonstrated the feasibility of using the silver stars instead of platinum for the oxygen reduction reaction in alkaline fuel cells.
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Affiliation(s)
- Kimberly A. Homan
- Biomedical Engineering Department, The University of Texas at Austin, 1 University Station, C0800 Austin, Texas 78712, USA
| | - Jeffrey Chen
- Biomedical Engineering Department, The University of Texas at Austin, 1 University Station, C0800 Austin, Texas 78712, USA
| | - Adriane Schiano
- Biomedical Engineering Department, The University of Texas at Austin, 1 University Station, C0800 Austin, Texas 78712, USA
| | - Mona Mohamed
- Environmental Applications Department, National Institute of Laser Enhanced Sciences, Cairo University, Egypt
| | - Katherine A. Willets
- Chemistry and Biochemistry Department, The University of Texas at Austin, 1 University Station, A5300 Austin, Texas 78712, USA
| | - Sankaran Murugesan
- Chemistry and Biochemistry Department, The University of Texas at Austin, 1 University Station, A5300 Austin, Texas 78712, USA
| | - Keith J. Stevenson
- Chemistry and Biochemistry Department, The University of Texas at Austin, 1 University Station, A5300 Austin, Texas 78712, USA
| | - Stanislav Emelianov
- Biomedical Engineering Department, The University of Texas at Austin, 1 University Station, C0800 Austin, Texas 78712, USA,
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Yang C, Zhu H, Wu S, Bai Y, Gao H. Correlations between B-mode ultrasonic image texture features and tissue temperature in microwave ablation. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2010; 29:1787-1799. [PMID: 21098851 DOI: 10.7863/jum.2010.29.12.1787] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE The purpose of this study was to find the correlations between B-mode ultrasonic tissue texture features and tissue temperature in microwave ablation. METHODS A total of 20 in vitro porcine liver samples were used for microwave ablation experiments. B-mode ultrasonic images under various temperatures were acquired. The texture features of the differential images based on the gray level histogram, including the mean of the gray scale (MGS), standard deviation of the gray scale, and entropy of the gray scale (ENT), and those based on the gray level co-occurrence matrix, including the contrast (CON), angular second moment (ASM), inverse difference moment (IDM), and correlation, were extracted. Correlations between the features and liver sample temperature were analyzed. In addition, water bath heating experiments were also performed on 15 in vitro porcine liver samples for analysis validation. RESULTS The correlation coefficients across the MGS, ENT, and ASM in 4 directions (0°, 45°, 90°, and 135°), the CON and IDM in 3 directions (45°, 90°, and 135°), and a temperature range of 15°C to 90°C were high and greater than 0.9 during microwave ablation. All texture features of the differential B-mode ultrasonic images changed with rising temperature from 25°C to 60°C during water bath heating. CONCLUSIONS Changes in image features reflect changes in tissue temperature during microwave ablation.
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Affiliation(s)
- Chunlan Yang
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China.
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22
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Pysz MA, Gambhir SS, Willmann JK. Molecular imaging: current status and emerging strategies. Clin Radiol 2010; 65:500-16. [PMID: 20541650 DOI: 10.1016/j.crad.2010.03.011] [Citation(s) in RCA: 350] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Accepted: 03/25/2010] [Indexed: 02/07/2023]
Abstract
In vivo molecular imaging has a great potential to impact medicine by detecting diseases in early stages (screening), identifying extent of disease, selecting disease- and patient-specific treatment (personalized medicine), applying a directed or targeted therapy, and measuring molecular-specific effects of treatment. Current clinical molecular imaging approaches primarily use positron-emission tomography (PET) or single photon-emission computed tomography (SPECT)-based techniques. In ongoing preclinical research, novel molecular targets of different diseases are identified and, sophisticated and multifunctional contrast agents for imaging these molecular targets are developed along with new technologies and instrumentation for multi-modality molecular imaging. Contrast-enhanced molecular ultrasound (US) with molecularly-targeted contrast microbubbles is explored as a clinically translatable molecular imaging strategy for screening, diagnosing, and monitoring diseases at the molecular level. Optical imaging with fluorescent molecular probes and US imaging with molecularly-targeted microbubbles are attractive strategies as they provide real-time imaging, are relatively inexpensive, produce images with high spatial resolution, and do not involve exposure to ionizing irradiation. Raman spectroscopy/microscopy has emerged as a molecular optical imaging strategy for ultrasensitive detection of multiple biomolecules/biochemicals with both in vivo and ex vivo versatility. Photoacoustic imaging is a hybrid of optical and US techniques involving optically-excitable molecularly-targeted contrast agents and quantitative detection of resulting oscillatory contrast agent movement with US. Current preclinical findings and advances in instrumentation, such as endoscopes and microcatheters, suggest that these molecular imaging methods have numerous potential clinical applications and will be translated into clinical use in the near future.
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Affiliation(s)
- M A Pysz
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA 94305-5424, USA
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23
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Rai P, Mallidi S, Zheng X, Rahmanzadeh R, Mir Y, Elrington S, Khurshid A, Hasan T. Development and applications of photo-triggered theranostic agents. Adv Drug Deliv Rev 2010; 62:1094-124. [PMID: 20858520 DOI: 10.1016/j.addr.2010.09.002] [Citation(s) in RCA: 349] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Accepted: 09/01/2010] [Indexed: 12/19/2022]
Abstract
Theranostics, the fusion of therapy and diagnostics for optimizing efficacy and safety of therapeutic regimes, is a growing field that is paving the way towards the goal of personalized medicine for the benefit of patients. The use of light as a remote-activation mechanism for drug delivery has received increased attention due to its advantages in highly specific spatial and temporal control of compound release. Photo-triggered theranostic constructs could facilitate an entirely new category of clinical solutions which permit early recognition of the disease by enhancing contrast in various imaging modalities followed by the tailored guidance of therapy. Finally, such theranostic agents could aid imaging modalities in monitoring response to therapy. This article reviews recent developments in the use of light-triggered theranostic agents for simultaneous imaging and photoactivation of therapeutic agents. Specifically, we discuss recent developments in the use of theranostic agents for photodynamic-, photothermal- or photo-triggered chemotherapy for several diseases.
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24
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Chen YS, Frey W, Kim S, Homan K, Kruizinga P, Sokolov K, Emelianov S. Enhanced thermal stability of silica-coated gold nanorods for photoacoustic imaging and image-guided therapy. OPTICS EXPRESS 2010; 18:8867-78. [PMID: 20588732 PMCID: PMC3404861 DOI: 10.1364/oe.18.008867] [Citation(s) in RCA: 227] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 03/29/2010] [Accepted: 03/30/2010] [Indexed: 05/19/2023]
Abstract
Photothermal stability and, therefore, consistency of both optical absorption and photoacoustic response of the plasmonic nanoabsorbers is critical for successful photoacoustic image-guided photothermal therapy. In this study, silica-coated gold nanorods were developed as a multifunctional molecular imaging and therapeutic agent suitable for image-guided photothermal therapy. The optical properties and photothermal stability of silica-coated gold nanorods under intense irradiation with nanosecond laser pulses were investigated by UV-Vis spectroscopy and transmission electron microscopy. Silica-coated gold nanorods showed increased photothermal stability and retained their superior optical properties under much higher fluences. The changes in photoacoustic response of PEGylated and silica-coated nanorods under laser pulses of various fluences were compared. The silica-coated gold nanorods provide a stable photoacoustic signal, which implies better imaging capabilities and make silica-coated gold nanorods a promising imaging and therapeutic nano-agent for photoacoustic imaging and image-guided photothermal therapy.
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Affiliation(s)
- Yun-Sheng Chen
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712,
USA
- Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX, 78712,
USA
| | - Wolfgang Frey
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712,
USA
| | - Seungsoo Kim
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712,
USA
| | - Kimberly Homan
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712,
USA
| | - Pieter Kruizinga
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712,
USA
| | - Konstantin Sokolov
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712,
USA
- Department of Imaging Physics, University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030,
USA
| | - Stanislav Emelianov
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712,
USA
- Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX, 78712,
USA
- Department of Imaging Physics, University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030,
USA
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25
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Homan K, Shah J, Gomez S, Gensler H, Karpiouk A, Brannon-Peppas L, Emelianov S. Silver nanosystems for photoacoustic imaging and image-guided therapy. JOURNAL OF BIOMEDICAL OPTICS 2010; 15:021316. [PMID: 20459238 PMCID: PMC2859084 DOI: 10.1117/1.3365937] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Revised: 01/05/2010] [Accepted: 01/06/2010] [Indexed: 05/23/2023]
Abstract
Due to their optical absorption properties, metallic nanoparticles are excellent photoacoustic imaging contrast agents. A silver nanosystem is presented here as a potential contrast agent for photoacoustic imaging and image-guided therapy. Currently, the nanosystem consists of a porous silver layer deposited on the surface of spherical silica cores ranging in diameter from 180 to 520 nm. The porous nature of the silver layer will allow for release of drugs or other therapeutic agents encapsulated in the core in future applications. In their current PEGylated form, the silver nanosystem is shown to be nontoxic in vitro at concentrations of silver up to 2 mgml. Furthermore, the near-infrared absorbance properties of the nanosystem are demonstrated by measuring strong, concentration-dependent photoacoustic signal from the silver nanosystem embedded in an ex vivo tissue sample. Our study suggests that silver nanosystems can be used as multifunctional agents capable of augmenting image-guided therapy techniques.
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Affiliation(s)
- Kimberly Homan
- The University of Texas at Austin, Biomedical Engineering Department, 1 University Station C0800, Austin, Texas 78712, USA
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Mallidi S, Larson T, Tam J, Joshi PP, Karpiouk A, Sokolov K, Emelianov S. Multiwavelength photoacoustic imaging and plasmon resonance coupling of gold nanoparticles for selective detection of cancer. NANO LETTERS 2009; 9:2825-31. [PMID: 19572747 PMCID: PMC2898720 DOI: 10.1021/nl802929u] [Citation(s) in RCA: 275] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Gold nanoparticles targeting epidermal growth factor receptor via antibody conjugation undergo molecular specific aggregation when they bind to receptors on cell surfaces, leading to a red shift in their plasmon resonance frequency. Capitalizing on this effect, we demonstrate the efficacy of the molecular specific photoacoustic imaging technique using subcutaneous tumor-mimicking gelatin implants in ex-vivo mouse tissue. The results of our study suggest that highly selective and sensitive detection of cancer cells is possible using multiwavelength photoacoustic imaging and molecular specific gold nanoparticles.
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Affiliation(s)
| | | | | | | | | | | | - Stanislav Emelianov
- To whom correspondence should be addressed. Telephone: (512) 471-1733. Fax: (512) 471-0616.
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Terentyuk GS, Maslyakova GN, Suleymanova LV, Khlebtsov NG, Khlebtsov BN, Akchurin GG, Maksimova IL, Tuchin VV. Laser-induced tissue hyperthermia mediated by gold nanoparticles: toward cancer phototherapy. JOURNAL OF BIOMEDICAL OPTICS 2009; 14:021016. [PMID: 19405729 DOI: 10.1117/1.3122371] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
We describe an application of plasmonic silica/gold nanoshells to produce a controllable laser hyperthermia in tissues with the aim of the enhancement of cancer photothermal therapy. Laser irradiation parameters are optimized on the basis of preliminary experimental studies using a test-tube phantom and laboratory rats. Temperature distributions on the animal skin surface at hypodermic and intramuscular injection of gold nanoparticle suspensions and affectations by the laser radiation are measured in vivo with a thermal imaging system. The results of temperature measurements are compared with tissue histology.
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Affiliation(s)
- Georgy S Terentyuk
- Saratov State University, Department of Optics and Biophotonics, 83 Astrakhanskaya, Saratov 410012, Russia
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Joshi PP, Chen YS, Kim S, Shah J, Sokolov K, Emelianov S. Molecular therapeutic agents for noninvasive photoacoustic image-guided photothermal therapy. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2009; 2009:4106-9. [PMID: 19964615 DOI: 10.1109/iembs.2009.5334025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Gold nanoparticles are attracting increasing attention in nanomedicine due to their inherently low toxicity and unique optical properties. In particular, gold nanorods have been used in the thermal therapy due to their tunable strong longitudinal plasmon resonance in the near infra-red region and high conversion efficiency from optical to thermal energy. In this study we explore the potential of gold nanorods for photoacoustic image-guided photothermal therapy to treat cancers. We synthesize the gold nanorods and make them biocompatible by replacing the cytotoxic surfactant used in the synthesis (cetyl trimethyl ammonium bromide) with a biocompatible molecule and then demonstrate the targeting to the cancer cells by bioconjugation of the modified nanorods.
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Affiliation(s)
- Pratixa P Joshi
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, USA.
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Shah J, Thomsen S, Milner TE, Emelianov SY. Ultrasound guidance and monitoring of laser-based fat removal. Lasers Surg Med 2008; 40:680-7. [PMID: 19065554 DOI: 10.1002/lsm.20726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND AND OBJECTIVES We report on a study to investigate feasibility of utilizing ultrasound imaging to guide laser removal of subcutaneous fat. Ultrasound imaging can be used to identify the tissue composition and to monitor the temperature increase in response to laser irradiation. STUDY DESIGN/MATERIALS AND METHODS Laser heating was performed on ex vivo porcine subcutaneous fat through the overlying skin using a continuous wave laser operating at 1,210 nm optical wavelength. Ultrasound images were recorded using a 10 MHz linear array-based ultrasound imaging system. RESULTS Ultrasound imaging was utilized to differentiate between water-based and lipid-based regions within the porcine tissue and to identify the dermis-fat junction. Temperature maps during the laser exposure in the skin and fatty tissue layers were computed. CONCLUSIONS Results of our study demonstrate the potential of using ultrasound imaging to guide laser fat removal.
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Affiliation(s)
- Jignesh Shah
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas 78712, USA
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