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Stern NB, Shrestha B, Porter T. A Facile Approach to Producing Liposomal J-Aggregates of Indocyanine Green with Diagnostic and Therapeutic Potential. ADVANCED THERAPEUTICS 2024; 7:2400042. [PMID: 39132131 PMCID: PMC11308451 DOI: 10.1002/adtp.202400042] [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: 01/27/2024] [Indexed: 08/13/2024]
Abstract
Liposomal J-Aggregates of Indocyanine Green (L-JA) can serve as a biocompatible and biodegradable nanoparticle for photoacoustic imaging and photothermal therapy. When compared to monomeric IcG, L-JA are characterized by longer circulation, improved photostability, elevated absorption at longer wavelengths, and increased photoacoustic signal generation. However, the documented methods for production of L-JA vary widely. We developed an approach to efficiently form IcG J-aggregates (IcG-JA) directly in liposomes at elevated temperatures. Aggregating within fully formed liposomes ensures particle uniformity and allows for control of J-aggregate size. L-JA have unique properties compared to IcG. L-JA provide significant contrast enhancement in photoacoustic images for up to 24 hours after injection, while IcG and unencapsulated IcG-JA are cleared within an hour. L-JA allow for more accurate photoacoustic-based sO2 estimation and particle tracking compared to IcG. Furthermore, photothermal heating of L-JA with an 852nm laser is demonstrated to be more effective at lower laser powers than conventional 808nm lasers for the first time. The presented technique offers an avenue for formulating a multi-faceted contrast agent for photoacoustic imaging and photothermal therapy that offers significant advantages over other conventional agents.
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2
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Krivetskaya AA, Kustov DM, Levkin VV, Osminin SV, Kharnas SS, Eventeva EV, Vetshev FP, Komarov RN, Linkov KG, Savelieva TA, Loschenov VB. Evaluation of tissue blood supply during esophagectomy using fluorescent diagnostics and diffuse scattering spectroscopy in visible region. Photodiagnosis Photodyn Ther 2024; 45:103937. [PMID: 38103583 DOI: 10.1016/j.pdpdt.2023.103937] [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: 10/31/2023] [Revised: 12/13/2023] [Accepted: 12/13/2023] [Indexed: 12/19/2023]
Abstract
BACKGROUND The success of the surgical treatment of a tumor or obstruction of the esophagus with subsequent anastomosis application depends on the level of blood supply to the stitched tissues. Intraoperative assessment of blood flow is widely used in medicine and can be used as a diagnostic method that affects the outcome of surgery and reduces the frequency of postoperative complications for the patient. METHODS In this work, the assessment of blood supply during esophageal resection operations was carried out using two techniques sequentially: fluorescent diagnostics with indocyanine green and measurement of hemoglobin oxygen saturation by diffuse scattering spectroscopy in the visible wavelength range. The first method was used to assess the integrity of the vascular network structure in the area of anastomosis and blood flow through the sutured tissues, the second one - for local assessment of hemoglobin oxygen saturation in the investigated area. RESULTS Conducted clinical study involved the participation of nine patients with malignant neoplasms (six cases) or esophageal obstruction (three cases). The presence of postoperative complications was compared with the measurement results. Anastomosis failure was observed in only one patient. According to the results of the study, with the use of the investigated method of assessing blood supply, there is a tendency towards a decrease in the frequency of anastomosis leaks (11.1 % compared with 21.4 %). CONCLUSIONS Therefore, fluorescent diagnostics with indocyanine green and measurement of hemoglobin oxygen saturation using diffuse scattering spectroscopy were affirmed as methods that allow increasing the safety of surgical procedures by assessing the risk of postoperative complications, including anastomosis failures.
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Affiliation(s)
- Anna A Krivetskaya
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991, Moscow, Russia; Institute of Engineering Physics for Biomedicine, National Research Nuclear University MEPhI, 115409, Moscow, Russia.
| | - Daniil M Kustov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991, Moscow, Russia
| | - Vladimir V Levkin
- Department of Faculty Surgery No. 1, I.M. Sechenov First Moscow State Medical University, 119992, Moscow, Russia
| | - Sergey V Osminin
- Department of Faculty Surgery No. 1, I.M. Sechenov First Moscow State Medical University, 119992, Moscow, Russia
| | - Sergey S Kharnas
- Department of Faculty Surgery No. 1, I.M. Sechenov First Moscow State Medical University, 119992, Moscow, Russia
| | - Evgenia V Eventeva
- Department of Faculty Surgery No. 1, I.M. Sechenov First Moscow State Medical University, 119992, Moscow, Russia
| | - Fedor P Vetshev
- Department of Faculty Surgery No. 1, I.M. Sechenov First Moscow State Medical University, 119992, Moscow, Russia
| | - Roman N Komarov
- Department of Faculty Surgery No. 1, I.M. Sechenov First Moscow State Medical University, 119992, Moscow, Russia
| | - Kirill G Linkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991, Moscow, Russia
| | - Tatiana A Savelieva
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991, Moscow, Russia; Institute of Engineering Physics for Biomedicine, National Research Nuclear University MEPhI, 115409, Moscow, Russia
| | - Victor B Loschenov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991, Moscow, Russia; Institute of Engineering Physics for Biomedicine, National Research Nuclear University MEPhI, 115409, Moscow, Russia
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Zhdanov AV, Sen R, Devoy C, Li L, Tangney M, Papkovsky DB. Analysis of tumour oxygenation in model animals on a phosphorescence lifetime based macro-imager. Sci Rep 2023; 13:18732. [PMID: 37907625 PMCID: PMC10618169 DOI: 10.1038/s41598-023-46224-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 10/30/2023] [Indexed: 11/02/2023] Open
Abstract
Monitoring of tissue O2 is essential for cancer development and treatment, as hypoxic tumour regions develop resistance to radio- and chemotherapy. We describe a minimally invasive technique for the monitoring of tissue oxygenation in developing grafted tumours, which uses the new phosphorescence lifetime based Tpx3Cam imager. CT26 cells stained with a near-infrared emitting nanoparticulate O2 probe NanO2-IR were injected into mice to produce grafted tumours with characteristic phosphorescence. The tumours were allowed to develop for 3, 7, 10 and 17 days, with O2 imaging experiments performed on live and euthanised animals at different time points. Despite a marked trend towards decreased O2 in dead animals, their tumour areas produced phosphorescence lifetime values between 44 and 47 µs, which corresponded to hypoxic tissue with 5-20 μM O2. After the O2 imaging in animals, confocal Phosphorescence Lifetime Imaging Microscopy was conducted to examine the distribution of NanO2-IR probe in the tumours, which were excised, fixed and sliced for the purpose. The probe remained visible as bright and discrete 'islands' embedded in the tumour tissue until day 17 of tumour growth. Overall, this O2 macro-imaging method using NanO2-IR holds promise for long-term studies with grafted tumours in live animal models, providing quantitative 2D mapping of tissue O2.
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Affiliation(s)
- Alexander V Zhdanov
- School of Biochemistry and Cell Biology, University College Cork, Pharmacy Building, College Road, Cork, Ireland
| | - Rajannya Sen
- School of Biochemistry and Cell Biology, University College Cork, Pharmacy Building, College Road, Cork, Ireland
| | - Ciaran Devoy
- Cancer Research @UCC, University College Cork, Cork, Ireland
| | - Liang Li
- School of Biochemistry and Cell Biology, University College Cork, Pharmacy Building, College Road, Cork, Ireland
| | - Mark Tangney
- Cancer Research @UCC, University College Cork, Cork, Ireland
| | - Dmitri B Papkovsky
- School of Biochemistry and Cell Biology, University College Cork, Pharmacy Building, College Road, Cork, Ireland.
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4
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Hosseindokht Z, Kolahdouz M, Hajikhani B, Sasanpour P. Photoacoustic based evaluation of viscoelastic properties of Gram-negative and Gram-positive bacterial colonies. Sci Rep 2023; 13:14656. [PMID: 37670076 PMCID: PMC10480163 DOI: 10.1038/s41598-023-41663-8] [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: 03/22/2023] [Accepted: 08/29/2023] [Indexed: 09/07/2023] Open
Abstract
Mechanical properties of bacterial colonies are crucial considering both addressing their pathogenic effects and exploring their potential applications. Viscoelasticity is a key mechanical property with major impacts on the cell shapes and functions, which reflects the information about the cell envelope constituents. Hereby, we have proposed the application of photoacoustic viscoelasticity (PAVE) for studying the rheological properties of bacterial colonies. In this regard, we employed an intensity-modulated laser beam as the excitation source followed by the phase delay measurement between the generated PA signal and the reference for the characterization of colonies of two different types of Gram-positive and Gram-negative bacteria. The results of our study show that the colony of Staphylococcus aureus as Gram-positive bacteria has a significantly higher viscoelasticity ratio compared to that value for Acinetobacter baumannii as Gram-negative bacteria (77% difference). This may be due to the differing cell envelope structure between the two species, but we cannot rule out effects of biofilm formation in the colonies. Furthermore, a lumped model has been provided for the mechanical properties of bacterial colonies.
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Affiliation(s)
- Zahra Hosseindokht
- School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Mohammadreza Kolahdouz
- School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran.
| | - Bahareh Hajikhani
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Pezhman Sasanpour
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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5
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John S, Hester S, Basij M, Paul A, Xavierselvan M, Mehrmohammadi M, Mallidi S. Niche preclinical and clinical applications of photoacoustic imaging with endogenous contrast. PHOTOACOUSTICS 2023; 32:100533. [PMID: 37636547 PMCID: PMC10448345 DOI: 10.1016/j.pacs.2023.100533] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 06/30/2023] [Accepted: 07/14/2023] [Indexed: 08/29/2023]
Abstract
In the past decade, photoacoustic (PA) imaging has attracted a great deal of popularity as an emergent diagnostic technology owing to its successful demonstration in both preclinical and clinical arenas by various academic and industrial research groups. Such steady growth of PA imaging can mainly be attributed to its salient features, including being non-ionizing, cost-effective, easily deployable, and having sufficient axial, lateral, and temporal resolutions for resolving various tissue characteristics and assessing the therapeutic efficacy. In addition, PA imaging can easily be integrated with the ultrasound imaging systems, the combination of which confers the ability to co-register and cross-reference various features in the structural, functional, and molecular imaging regimes. PA imaging relies on either an endogenous source of contrast (e.g., hemoglobin) or those of an exogenous nature such as nano-sized tunable optical absorbers or dyes that may boost imaging contrast beyond that provided by the endogenous sources. In this review, we discuss the applications of PA imaging with endogenous contrast as they pertain to clinically relevant niches, including tissue characterization, cancer diagnostics/therapies (termed as theranostics), cardiovascular applications, and surgical applications. We believe that PA imaging's role as a facile indicator of several disease-relevant states will continue to expand and evolve as it is adopted by an increasing number of research laboratories and clinics worldwide.
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Affiliation(s)
- Samuel John
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | - Scott Hester
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | - Maryam Basij
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | - Avijit Paul
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | | | - Mohammad Mehrmohammadi
- Department of Imaging Sciences, University of Rochester Medical Center, Rochester, NY, USA
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA
- Wilmot Cancer Institute, Rochester, NY, USA
| | - Srivalleesha Mallidi
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA
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Manwar R, Kratkiewicz K, Mahmoodkalayeh S, Hariri A, Papadelis C, Hansen A, Pillers DAM, Gelovani J, Avanaki K. Development and characterization of transfontanelle photoacoustic imaging system for detection of intracranial hemorrhages and measurement of brain oxygenation: Ex-vivo. PHOTOACOUSTICS 2023; 32:100538. [PMID: 37575972 PMCID: PMC10413353 DOI: 10.1016/j.pacs.2023.100538] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 06/28/2023] [Accepted: 07/19/2023] [Indexed: 08/15/2023]
Abstract
We have developed and optimized an imaging system to study and improve the detection of brain hemorrhage and to quantify oxygenation. Since this system is intended to be used for brain imaging in neonates through the skull opening, i.e., fontanelle, we called it, Transfontanelle Photoacoustic Imaging (TFPAI) system. The system is optimized in terms of optical and acoustic designs, thermal safety, and mechanical stability. The lower limit of quantification of TFPAI to detect the location of hemorrhage and its size is evaluated using in-vitro and ex-vivo experiments. The capability of TFPAI in measuring the tissue oxygenation and detection of vasogenic edema due to brain blood barrier disruption are demonstrated. The results obtained from our experimental evaluations strongly suggest the potential utility of TFPAI, as a portable imaging modality in the neonatal intensive care unit. Confirmation of these findings in-vivo could facilitate the translation of this promising technology to the clinic.
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Affiliation(s)
- Rayyan Manwar
- University of Illinois at Chicago, Department of Biomedical Engineering, Chicago, IL, United States
| | - Karl Kratkiewicz
- Barbara Ann Karmanos Cancer Institute, Detroit, MI, United States
| | | | - Ali Hariri
- Department of Nanoengineering, University of California, San Diego, CA, United States
| | - Christos Papadelis
- Jane and John Justin Neurosciences Center, Cook Children’s Health Care System, Fort Worth, TX, United States
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, United States
| | - Anne Hansen
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
| | - De-Ann M. Pillers
- Department of Pediatrics, UI Health Children’s Hospital of the University of Illinois at Chicago, Chicago, IL, United States
| | - Juri Gelovani
- College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, Abu Dhabi, UAE
- Department of Biomedical Engineering, College of Engineering and School of Medicine, Wayne State University, Detroit, MI 48201, United States
- Dept. Radiology, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Kamran Avanaki
- University of Illinois at Chicago, Department of Biomedical Engineering, Chicago, IL, United States
- Department of Pediatrics, UI Health Children’s Hospital of the University of Illinois at Chicago, Chicago, IL, United States
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, United States
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7
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Manwar R, Gelovani JG, Avanaki K. Bilirubin-biliverdin concentration measurement using photoacoustic spectroscopic analysis for determining hemorrhage age. JOURNAL OF BIOPHOTONICS 2023:e202200316. [PMID: 36995028 DOI: 10.1002/jbio.202200316] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 02/15/2023] [Accepted: 03/10/2023] [Indexed: 06/19/2023]
Abstract
The onset of intracerebral hemorrhage and its progression toward acute brain injury have been correlated with the concentration of unconjugated bilirubin (BR). In addition, BR has been considered a novel predictor of outcome from intracranial hemorrhage. Since the existing invasive approach for determining localized BR and biliverdin (BV) concentration within the hemorrhagic brain lesion is not feasible, the predictive capability of BR in terms of determining the onset of hemorrhage and understanding the consequences of its progression (age) is unknown. In this study, we have demonstrated a photoacoustic (PA) approach to the noninvasive measurement of BR-BV ratio that can be utilized longitudinally to approximate the onset of the hemorrhage. The PA imaging-based measurements of BV and BR in tissues and fluids can potentially be used to determine hemorrhage "age," quantitatively evaluate the hemorrhage resorption or detect a rebleeding, and assess responses to therapy and prognosis.
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Affiliation(s)
- Rayyan Manwar
- The Richard and Loan Hill Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Juri G Gelovani
- College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, Abu Dhabi, UAE
- Department of Biomedical Engineering, College of Engineering and School of Medicine, Wayne State University, Detroit, Michigan, USA
- Department Radiology, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kamran Avanaki
- The Richard and Loan Hill Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, Illinois, USA
- Department of Dermatology and Pediatric, University of Illinois at Chicago, Chicago, Illinois, USA
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8
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Qu Z, Liu C, Zhu J, Zhang Y, Zhou Y, Wang L. Two-step proximal gradient descent algorithm for photoacoustic signal unmixing. PHOTOACOUSTICS 2022; 27:100379. [PMID: 35722270 PMCID: PMC9198964 DOI: 10.1016/j.pacs.2022.100379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/22/2022] [Accepted: 06/07/2022] [Indexed: 05/02/2023]
Abstract
Photoacoustic microscopy uses multiple wavelengths to measure concentrations of different absorbers. The speed of sound limits the shortest wavelength switching time to sub-microseconds, which is a bottleneck for high-speed broad-spectrum imaging. Via computational separation of overlapped signals, we can break the sound-speed limit on the wavelength switching time. This paper presents a new signal unmixing algorithm named two-step proximal gradient descent. It is advantageous in separating multiple wavelengths with long overlapping and high noise. In the simulation, we can unmix up to nine overlapped signals and successfully separate three overlapped signals with 12-ns delay and 15.9-dB signal-to-noise ratio. We apply this technique to separate three-wavelength photoacoustic images in microvessels. In vivo results show that the algorithm can successfully unmix overlapped multi-wavelength photoacoustic signals, and the unmixed data can improve accuracy in oxygen saturation imaging.
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Affiliation(s)
- Zheng Qu
- City University of Hong Kong, Department of Biomedical Engineering, Kowloon, Hong Kong, China
| | - Chao Liu
- City University of Hong Kong, Department of Biomedical Engineering, Kowloon, Hong Kong, China
| | - Jingyi Zhu
- City University of Hong Kong, Department of Biomedical Engineering, Kowloon, Hong Kong, China
| | - Yachao Zhang
- City University of Hong Kong, Department of Biomedical Engineering, Kowloon, Hong Kong, China
| | - Yingying Zhou
- City University of Hong Kong, Department of Biomedical Engineering, Kowloon, Hong Kong, China
| | - Lidai Wang
- City University of Hong Kong, Department of Biomedical Engineering, Kowloon, Hong Kong, China
- City University of Hong Kong Shenzhen Research Institute, Yuexing Yi Dao, Shenzhen, Guang Dong 518057, China
- Corresponding author at: City University of Hong Kong, Department of Biomedical Engineering, Kowloon, .Hong Kong, China
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9
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Oxygen saturation and blood volume analysis by Photoacoustic imaging to identify pre and post-PDT vascular changes. Saudi J Biol Sci 2022; 29:103304. [PMID: 35574285 PMCID: PMC9092990 DOI: 10.1016/j.sjbs.2022.103304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/07/2022] [Accepted: 04/17/2022] [Indexed: 11/22/2022] Open
Abstract
In this study, the blood volume and oxygen saturation of tumors were measured after photoacoustic imaging (PAI) under conditions of pre-photodynamic therapy (PDT), post-PDT, and 4 hrs, and 24 hrs post-PDT. PDTs with aminolevulinic acid (ALA) and low and high doses of benzoporphyrin derivative (BPD) were conducted to observe oxygen saturation changes, and the rapid oxygen consumption in the blood detected due to the action of BPD at the vascular level resulted in the recovery of PDT completion. Likewise, blood volume changes followed by ALA-PDT and BPD-PDT at low and high doses depicted a fast expansion of the blood volume after treatment. The tumor subjected to a high dose of ALA-PDT showed a partial alteration of Hb-pO2 in the first 24 hrs, as did the tumors treated with two ALA- and BPD-mediated PDTs. The Hb-pO2 started reducing immediately post-PDT and was less than 30% after 4 hrs until 24 hrs post-PDT. Reduced vascular demand was possibly due to tumor necrosis, as shown by the permanent damage in the cancer cells' bioluminescence signal. The ALA-mediated PDT-subjected tumor showed a 50% drop in BV at 24 hrs post-PDT, which is suggestive of vascular pruning. The studied data of blood volume against BLI showed the blood volume and oxygenation variations validating the cells' metabolic activity, including cell death.
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10
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Zhou Y, Liu C, Huang X, Qian X, Wang L, Lai P. Low-consumption photoacoustic method to measure liquid viscosity. BIOMEDICAL OPTICS EXPRESS 2021; 12:7139-7148. [PMID: 34858705 PMCID: PMC8606139 DOI: 10.1364/boe.444144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/17/2021] [Accepted: 10/19/2021] [Indexed: 05/10/2023]
Abstract
Viscosity measurement is important in many areas of biomedicine and industry. Traditional viscometers are usually time-consuming and require huge sample volumes. Microfluidic viscometry may overcome the challenge of large sample consumption but suffers from a long process time and a complicated structure design and interaction. Here, we present a photoacoustic method that measures the liquid viscosity in a simple microfluidic-based tube. This new viscosity measurement method embraces fast detection speed and low fluid consumption, offering a new tool for efficient and convenient liquid viscosity measurement in a broad range of applications.
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Affiliation(s)
- Yingying Zhou
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
- These authors contributed equally to this work
| | - Chao Liu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- These authors contributed equally to this work
| | - Xiazi Huang
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
- These authors contributed equally to this work
| | - Xiang Qian
- Tsinghua-Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
| | - Lidai Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Puxiang Lai
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
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11
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Pattyn A, Mumm Z, Alijabbari N, Duric N, Anastasio MA, Mehrmohammadi M. Model-based optical and acoustical compensation for photoacoustic tomography of heterogeneous mediums. PHOTOACOUSTICS 2021; 23:100275. [PMID: 34094852 PMCID: PMC8167150 DOI: 10.1016/j.pacs.2021.100275] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 05/14/2021] [Accepted: 05/17/2021] [Indexed: 05/11/2023]
Abstract
Photoacoustic tomography (PAT) is a non-invasive, high-resolution imaging modality, capable of providing functional and molecular information of various pathologies, such as cancer. One limitation of PAT is the depth and wavelength dependent optical fluence, which results in reduced PA signal amplitude from deeper tissue regions. These factors can therefore introduce errors into quantitative measurements such as oxygen saturation (sO2) or the localization and concentration of various chromophores. The variation in the speed-of-sound between different tissues can also lead to distortions in object location and shape. Compensating for these effects allows PAT to be used more quantitatively. We have developed a proof-of-concept algorithm capable of compensating for the heterogeneity in speed-of-sound and depth dependent optical fluence. Speed-of-sound correction was done by using a straight ray-based algorithm for calculating the family of iso-time-of-flight contours between the transducers and every pixel in the imaging grid, while fluence compensation was done by utilizing the graphics processing unit (GPU) accelerated software MCXCL for Monte Carlo modeling of optical fluence variation. This algorithm was tested on a polyvinyl chloride plastisol (PVCP) phantom, which contained cyst mimics and blood inclusions to test the algorithm under relatively heterogeneous conditions. Our results indicate that our PAT algorithm can compensate for the speed-of-sound variation and depth dependent fluence effects within a heterogeneous phantom. The results of this study will pave the way for further development and evaluation of the proposed method in more complex in-vitro and ex-vivo phantoms, as well as compensating for the wavelength-dependent optical fluence in spectroscopic PAT.
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Affiliation(s)
- Alexander Pattyn
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
- Corresponding author.
| | - Zackary Mumm
- Department of Electrical and Computer Engineering, Wayne State University, Detroit, MI, USA
| | - Naser Alijabbari
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | - Neb Duric
- Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA
- Department of Imaging Sciences, University of Rochester, Rochester, NY, USA
| | - Mark A. Anastasio
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Mohammad Mehrmohammadi
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
- Department of Electrical and Computer Engineering, Wayne State University, Detroit, MI, USA
- Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA
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12
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Pang Z, Wang Y, Wang Y, Sun Z, Qi W, Xi L. Multi-modality photoacoustic/ultrasound imaging based on a commercial ultrasound platform. OPTICS LETTERS 2021; 46:4382-4385. [PMID: 34470021 DOI: 10.1364/ol.435989] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Multimodal imaging takes advantage of each modality and has become a recent trend in the field of biomedical imaging. In this Letter, we develop and evaluate an integrated multi-modality imaging system combining photoacoustic computed tomography, optical resolution photoacoustic microscopy, brightness mode, and power Doppler ultrasound imaging on a commercial ultrasonographic platform. Using different imaging modalities enables the hybrid system to recover dense vascular networks and hemodynamic and morphological variations in both superficial and deep tissues. To evaluate the performance and illustrate the advantages of this system, we carried out both phantom and in vivo experiments. In addition to the complementary tissue information offered by different imaging modalities, the use of a commercial ultrasound platform shows the feasibility of the proposed method for future clinical translation.
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Bok T, Hysi E, Kolios MC. In vivo photoacoustic assessment of the oxygen saturation changes in the human radial artery: a preliminary study associated with age. JOURNAL OF BIOMEDICAL OPTICS 2021; 26:JBO-200377R. [PMID: 33754541 PMCID: PMC7984962 DOI: 10.1117/1.jbo.26.3.036006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 03/02/2021] [Indexed: 05/08/2023]
Abstract
SIGNIFICANCE We demonstrate the potential of probing the sO2 change under blood flow in vivo using photoacoustic (PA) imaging and sheds light on the complex relationship between RBC aggregation and oxygen delivery. AIM To conduct in vivo assessments of the sO2 in the radial artery of healthy volunteers and simultaneously probe the relation between the sO2 and hemodynamic behavior such as red blood cell (RBC) aggregation. APPROACH The effects of PA-based measurements of blood hemodynamics were studied as a function of the subjects' age (20s, 30s, and 40s). The pulsatile blood flow in the human radial artery of 12 healthy subjects was imaged in the 700 to 900 nm optical wavelength range using a linear array-based PA system. RESULTS The PA power when blood velocity is minimum (Pamax) was larger than the one attained at maximum blood velocity (Pamin), consistent with predictions based on the cyclical variation of RBC aggregation during pulsatile flow. The difference between Pamin and Pamax at 800 nm (ΔPa800) increased with age (1.7, 2.2, and 2.6 dB for age group of 20s, 30s, and 40s, respectively). The sO2 computed from Pamax was larger than the one from Pamin. CONCLUSIONS The ΔPa800 increased with participant age. The ΔPa800 metric could be a surrogate of noninvasively monitoring the age-induced changes in RBC aggregation. The sO2 change during a cycle of pulsatile blood flow also increased with age, demonstrating that RBC aggregation can affect the sO2 change.
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Affiliation(s)
- Taehoon Bok
- Ryerson University, Faculty of Science, Department of Physics, Toronto, Canada
- Institute for Biomedical Engineering, Science and Technology, Toronto, Canada
- St. Michael’s Hospital, Keenan Research Centre for Biomedical Science, Division of Nephrology, Toronto, Canada
| | - Eno Hysi
- St. Michael’s Hospital, Keenan Research Centre for Biomedical Science, Division of Nephrology, Toronto, Canada
| | - Michael C. Kolios
- Ryerson University, Faculty of Science, Department of Physics, Toronto, Canada
- Institute for Biomedical Engineering, Science and Technology, Toronto, Canada
- St. Michael’s Hospital, Keenan Research Centre for Biomedical Science, Division of Nephrology, Toronto, Canada
- Address all correspondence to Michael C. Kolios,
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14
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Cheng MHY, Mo Y, Zheng G. Nano versus Molecular: Optical Imaging Approaches to Detect and Monitor Tumor Hypoxia. Adv Healthc Mater 2021; 10:e2001549. [PMID: 33241672 DOI: 10.1002/adhm.202001549] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/21/2020] [Indexed: 12/18/2022]
Abstract
Hypoxia is a ubiquitous feature of solid tumors, which plays a key role in tumor angiogenesis and resistance development. Conventional hypoxia detection methods lack continuous functional detection and are generally less suitable for dynamic hypoxia measurement. Optical sensors hereby provide a unique opportunity to noninvasively image hypoxia with high spatiotemporal resolution and enable real-time detection. Therefore, these approaches can provide a valuable tool for personalized treatment planning against this hallmark of aggressive cancers. Many small optical molecular probes can enable analyte triggered response and their photophysical properties can also be fine-tuned through structural modification. On the other hand, optical nanoprobes can acquire unique intrinsic optical properties through nanoconfinement as well as enable simultaneous multimodal imaging and drug delivery. Furthermore, nanoprobes provide biological advantages such as improving bioavailability and systemic delivery of the sensor to enhance bioavailability. This review provides a comprehensive overview of the physical, chemical, and biological analytes for cancer hypoxia detection and focuses on discussing the latest nano- and molecular developments in various optical imaging approaches (fluorescence, phosphorescence, and photoacoustic) in vivo. Finally, this review concludes with a perspective toward the potentials of these optical imaging approaches in hypoxia detection and the challenges with molecular and nanotechnology design strategies.
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Affiliation(s)
- Miffy Hok Yan Cheng
- Princess Margaret Cancer Centre University Health Network 101 College Street, PMCRT 5–354 Toronto Ontario M5G 1L7 Canada
| | - Yulin Mo
- Princess Margaret Cancer Centre University Health Network 101 College Street, PMCRT 5–354 Toronto Ontario M5G 1L7 Canada
- Institute of Medical Science University of Toronto 101 College Street Toronto Ontario M5G 1L7 Canada
| | - Gang Zheng
- Princess Margaret Cancer Centre University Health Network 101 College Street, PMCRT 5–354 Toronto Ontario M5G 1L7 Canada
- Institute of Medical Science University of Toronto 101 College Street Toronto Ontario M5G 1L7 Canada
- Department of Medical Biophysics University of Toronto 101 College Street Toronto Ontario M5G 1L7 Canada
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15
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Stylogiannis A, Riobo L, Prade L, Glasl S, Klein S, Lucidi G, Fuchs M, Saur D, Ntziachristos V. Low-cost single-point optoacoustic sensor for spectroscopic measurement of local vascular oxygenation. OPTICS LETTERS 2020; 45:6579-6582. [PMID: 33325844 DOI: 10.1364/ol.412034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
Optical sensors developed for the assessment of oxygen in tissue microvasculature, such as those based on near-infrared spectroscopy, are limited in application by light scattering. Optoacoustic methods are insensitive to light scattering, and therefore, they can provide higher specificity and accuracy when quantifying local vascular oxygenation. However, currently, to the best of our knowledge, there is no low-cost, single point, optoacoustic sensor for the dedicated measurement of oxygen saturation in tissue microvasculature. This work introduces a spectroscopic optoacoustic sensor (SPOAS) for the non-invasive measurement of local vascular oxygenation in real time. SPOAS employs continuous wave laser diodes and measures at a single point, which makes it low-cost and portable. The SPOAS performance was benchmarked using blood phantoms, and it showed excellent linear correlation (R2=0.98) with a blood gas analyzer. Subsequent measurements of local vascular oxygenation in living mice during an oxygen stress test correlated well with simultaneous readings from a reference instrument.
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16
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Taylor NG, Chung SH, Kwansa AL, Johnson RR, Teator AJ, Milliken NJB, Koshlap KM, Yingling YG, Lee YZ, Leibfarth FA. Partially Fluorinated Copolymers as Oxygen Sensitive
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F MRI Agents. Chemistry 2020; 26:9982-9990. [DOI: 10.1002/chem.202001505] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/19/2020] [Indexed: 01/03/2023]
Affiliation(s)
- Nicholas G. Taylor
- Department of Chemistry The University of North Carolina at Chapel Hill 125 South Rd Chapel Hill NC 27599 USA
| | - Sang Hun Chung
- Department of Radiology The University of North Carolina at Chapel Hill 101 Manning Dr Chapel Hill NC 27599 USA
| | - Albert L. Kwansa
- Department of Materials Science and Engineering North Carolina State University 911 Partners Way Raleigh NC 27695 USA
| | - Rob R. Johnson
- Department of Chemistry The University of North Carolina at Chapel Hill 125 South Rd Chapel Hill NC 27599 USA
| | - Aaron J. Teator
- Department of Chemistry The University of North Carolina at Chapel Hill 125 South Rd Chapel Hill NC 27599 USA
| | - Nina J. B. Milliken
- Department of Materials Science and Engineering North Carolina State University 911 Partners Way Raleigh NC 27695 USA
| | - Karl M. Koshlap
- Eshelman School of Pharmacy The University of North Carolina at Chapel Hill 301 Pharmacy Ln Chapel Hill NC 27599 USA
| | - Yaroslava G. Yingling
- Department of Materials Science and Engineering North Carolina State University 911 Partners Way Raleigh NC 27695 USA
| | - Yueh Z. Lee
- Department of Radiology The University of North Carolina at Chapel Hill 101 Manning Dr Chapel Hill NC 27599 USA
| | - Frank A. Leibfarth
- Department of Chemistry The University of North Carolina at Chapel Hill 125 South Rd Chapel Hill NC 27599 USA
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17
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Zhou Y, Liang S, Li M, Liu C, Lai P, Wang L. Optical-resolution photoacoustic microscopy with ultrafast dual-wavelength excitation. JOURNAL OF BIOPHOTONICS 2020; 13:e201960229. [PMID: 32049415 DOI: 10.1002/jbio.201960229] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/30/2020] [Accepted: 02/04/2020] [Indexed: 05/07/2023]
Abstract
Fast functional and molecular photoacoustic microscopy requires pulsed laser excitations at multiple wavelengths with enough pulse energy and short wavelength-switching time. Recent development of stimulated Raman scattering in optical fiber offers a low-cost laser source for multiwavelength photoacoustic imaging. In this approach, long fibers temporally separate different wavelengths via optical delay. The time delay between adjacent wavelengths may eventually limits the highest A-line rate. In addition, a long-time delay in fiber may limit the highest pulse energy, leading to poor image quality. In order to achieve high pulse energy and ultrafast dual-wavelength excitation, we present optical-resolution photoacoustic microscopy with ultrafast dual-wavelength excitation and a signal separation method. The signal separation method is validated in numerical simulation and phantom experiments. We show that when two photoacoustic signals are partially overlapped with a 50-ns delay, they can be recovered with 98% accuracy. We apply this ultrafast dual-wavelength excitation technique to in vivo OR-PAM. Results demonstrate that A-lines at two wavelengths can be successfully separated, and sO2 values can be reliably computed from the separated data. The ultrafast dual-wavelength excitation enables fast functional photoacoustic microscopy with negligible misalignment among different wavelengths and high pulse energy, which is important for in vivo imaging of microvascular dynamics.
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Affiliation(s)
- Yingying Zhou
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong
- Department of Biomedical Engineering, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Siyi Liang
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong
| | - Mingsheng Li
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong
| | - Chengbo Liu
- Research Laboratory for Biomedical Optics and Molecular Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Puxiang Lai
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
- Department of Biomedical Engineering, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Lidai Wang
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong
- Department of Biomedical Engineering, City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
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18
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Zhou Y, Cao F, Li H, Huang X, Wei D, Wang L, Lai P. Photoacoustic imaging of microenvironmental changes in facial cupping therapy. BIOMEDICAL OPTICS EXPRESS 2020; 11:2394-2401. [PMID: 32499932 PMCID: PMC7249831 DOI: 10.1364/boe.387985] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/18/2020] [Accepted: 03/02/2020] [Indexed: 05/21/2023]
Abstract
As a traditional medicine practice, cupping therapy has been widely used to relieve symptoms like fatigue, tension, and muscle pain. During the therapy, negative pressure is applied to the skin for a while with an intention to enhance blood circulation or induce micro-bleeding. The therapeutic effect, however, is not clear due to the lack of direct quantification. Aiming at a quantitative assessment of the treatment effect, we explore optical-resolution photoacoustic microscopy (OR-PAM) in monitoring the structural and functional changes after cupping. We find that, after 5-minutes of ∼ 20 kPa negative pressure cupping, more capillaries appear in the focus, and micro-blooding is observed from the capillaries. We quantify the images and find the blood vessel density is increased by 64%, and the total hemoglobin concentration in both the veins and the arteries exhibits 62% and 40% elevation, respectively. Oxygen saturation in the vein and artery decreased by 17% and 3% right after cupping, respectively. After two hours of recovery, the three blood-related parameters return to their original levels, indicating that the effects in the tissue last only a short period after cupping at the given pressure and time duration. Note that no significant cupping marks are induced with the treatment parameters in this study. This work proposes OR-PAM to quantitatively monitor and evaluate the effect of cupping therapy from the perspective of imaging. The method is also useful for accurate control of the therapeutic outcome.
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Affiliation(s)
- Yingying Zhou
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
- These authors contributed equally to this work
| | - Fei Cao
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
- These authors contributed equally to this work
| | - Huanhao Li
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Xiazi Huang
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Dongshan Wei
- School of Electrical Engineering and Intelligentization, Dongguan University of Technology, Dongguan, China
| | - Lidai Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
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19
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Hester SC, Kuriakose M, Nguyen CD, Mallidi S. Role of Ultrasound and Photoacoustic Imaging in Photodynamic Therapy for Cancer. Photochem Photobiol 2020; 96:260-279. [PMID: 31919853 PMCID: PMC7187279 DOI: 10.1111/php.13217] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 11/28/2019] [Indexed: 12/20/2022]
Abstract
Photodynamic therapy (PDT) is a phototoxic treatment with high spatial and temporal control and has shown tremendous promise in the management of cancer due to its high efficacy and minimal side effects. PDT efficacy is dictated by a complex relationship between dosimetry parameters such as the concentration of the photosensitizer at the tumor site, its spatial localization (intracellular or extracellular), light dose and distribution, oxygen distribution and concentration, and the heterogeneity of the inter- and intratumoral microenvironment. Studying and characterizing these parameters, along with monitoring tumor heterogeneity pre- and post-PDT, provides essential data for predicting therapeutic response and the design of subsequent therapies. In this review, we elucidate the role of ultrasound (US) and photoacoustic imaging in improving PDT-mediated outcomes in cancer-from tracking photosensitizer uptake and vascular destruction, to measuring oxygenation dynamics and the overall evaluation of tumor responses. We also present recent advances in multifunctional theranostic nanomaterials that can improve either US or photoacoustic imaging contrast, as well as deliver photosensitizers specifically to tumors. Given the wide availability, low-cost, portability and nonionizing nature of US and photoacoustic imaging, together with their capabilities of providing multiparametric morphological and functional information, these technologies are thusly inimitable when deployed in conjunction with PDT.
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Affiliation(s)
- Scott C. Hester
- Department of Biomedical EngineeringTufts UniversityMedfordMA
| | - Maju Kuriakose
- Department of Biomedical EngineeringTufts UniversityMedfordMA
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Simultaneous spatiotemporal tracking and oxygen sensing of transient implants in vivo using hot-spot MRI and machine learning. Proc Natl Acad Sci U S A 2019; 116:4861-4870. [PMID: 30808810 DOI: 10.1073/pnas.1815909116] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A varying oxygen environment is known to affect cellular function in disease as well as activity of various therapeutics. For transient structures, whether they are unconstrained therapeutic transplants, migrating cells during tumor metastasis, or cell populations induced by an immunological response, the role of oxygen in their fate and function is known to be pivotal albeit not well understood in vivo. To address such a challenge in the case of generation of a bioartificial pancreas, we have combined fluorine magnetic resonance imaging and unsupervised machine learning to monitor over time the spatial arrangement and the oxygen content of implants encapsulating pancreatic islets that are unconstrained in the intraperitoneal (IP) space of healthy and diabetic mice. Statistically significant trends in the postimplantation temporal dependence of oxygen content between aggregates of 0.5-mm or 1.5-mm alginate microcapsules were identified in vivo by looking at their dispersity as well as arrangement in clusters of different size and estimating oxygen content on a pixel-by-pixel basis from thousands of 2D images. Ultimately, we found that this dependence is stronger for decreased implant capsule size consistent with their tendency to also induce a larger immunological response. Beyond the bioartificial pancreas, this work provides a framework for the simultaneous spatiotemporal tracking and oxygen sensing of other cell populations and biomaterials that change over time to better understand and improve therapeutic design across diverse applications such as cellular transplant therapy, treatments preventing metastatic formation, and modulators for improving immunologic response, for all of which oxygen is a major mechanistic component.
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