1
|
Hannan MN, Sharma AK, Baran TM. First in human measurements of abscess cavity optical properties and methylene blue uptake prior to photodynamic therapy by in vivo diffuse reflectance spectroscopy. JOURNAL OF BIOMEDICAL OPTICS 2024; 29:027002. [PMID: 38414658 PMCID: PMC10898190 DOI: 10.1117/1.jbo.29.2.027002] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 02/29/2024]
Abstract
Significance Efficacious photodynamic therapy (PDT) of abscess cavities requires personalized treatment planning. This relies on knowledge of abscess wall optical properties, which we report for the first time in human subjects. Aim The objective was to extract optical properties and photosensitizer concentration from spatially resolved diffuse reflectance measurements of abscess cavities prior to methylene blue (MB) PDT, as part of a phase 1 clinical trial. Approach Diffuse reflectance spectra were collected at the abscess wall of 13 human subjects using a custom fiber-optic probe and optical spectroscopy system, before and after MB administration. A Monte Carlo lookup table was used to extract optical properties. Results Pre-MB abscess wall absorption coefficients at 665 nm were 0.15 ± 0.1 cm - 1 (0.03 to 0.36 cm - 1 ) and 10.74 ± 15.81 cm - 1 (0.08 to 49.3 cm - 1 ) post-MB. Reduced scattering coefficients at 665 nm were 8.45 ± 2.37 cm - 1 (4.8 to 13.2 cm - 1 ) and 5.6 ± 2.26 cm - 1 (1.6 to 9.9 cm - 1 ) for pre-MB and post-MB, respectively. Oxygen saturations were found to be 58.83 % ± 35.78 % (5.6% to 100%) pre-MB and 36.29 % ± 25.1 % (0.0001% to 76.4%) post-MB. Determined MB concentrations were 71.83 ± 108.22 μ M (0 to 311 μ M ). Conclusions We observed substantial inter-subject variation in both native wall optical properties and MB uptake. This underscores the importance of making these measurements for patient-specific treatment planning.
Collapse
Affiliation(s)
- Md Nafiz Hannan
- University of Rochester, Department of Physics and Astronomy, Rochester, New York, United States
| | - Ashwani K. Sharma
- University of Rochester Medical Center, Department of Imaging Sciences, Rochester, New York, United States
| | - Timothy M. Baran
- University of Rochester Medical Center, Department of Imaging Sciences, Rochester, New York, United States
- University of Rochester, Department of Biomedical Engineering, Rochester, New York, United States
- University of Rochester, The Institute of Optics, Rochester, New York, United States
| |
Collapse
|
2
|
Sun H, Ong Y, Yang W, Sourvanos D, Dimofte A, Busch TM, Singhal S, Cengel KA, Zhu TC. Clinical PDT dose dosimetry for pleural Photofrin-mediated photodynamic therapy. JOURNAL OF BIOMEDICAL OPTICS 2024; 29:018001. [PMID: 38223299 PMCID: PMC10787190 DOI: 10.1117/1.jbo.29.1.018001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 12/14/2023] [Accepted: 12/21/2023] [Indexed: 01/16/2024]
Abstract
Significance Photodynamic therapy (PDT) is an established cancer treatment utilizing light-activated photosensitizers (PS). Effective treatment hinges on the PDT dose-dependent on PS concentration and light fluence-delivered over time. We introduce an innovative eight-channel PDT dose dosimetry system capable of concurrently measuring light fluence and PS concentration during treatment. Aim We aim to develop and evaluate an eight-channel PDT dose dosimetry system for simultaneous measurement of light fluence and PS concentration. By addressing uncertainties due to tissue variations, the system enhances accurate PDT dosimetry for improved treatment outcomes. Approach The study positions eight isotropic detectors strategically within the pleural cavity before PDT. These detectors are linked to bifurcated fibers, distributing signals to both a photodiode and a spectrometer. Calibration techniques are applied to counter tissue-related variations and improve measurement accuracy. The fluorescence signal is normalized using the measured light fluence, compensating for variations in tissue properties. Measurements were taken in 78 sites in the pleural cavities of 20 patients. Results Observations reveal minimal Photofrin concentration variation during PDT at each site, juxtaposed with significant intra- and inter-patient heterogeneities. Across 78 treated sites in 20 patients, the average Photofrin concentration for all 78 sites is 4.98 μ M , with a median concentration of 4.47 μ M . The average PDT dose for all 78 sites is 493.17 μ MJ / cm 2 , with a median dose of 442.79 μ MJ / cm 2 . A significant variation in PDT doses is observed, with a maximum difference of 3.1 times among all sites within one patient and a maximum difference of 9.8 times across all patients. Conclusions The introduced eight-channel PDT dose dosimetry system serves as a valuable real-time monitoring tool for light fluence and PS concentration during PDT. Its ability to mitigate uncertainties arising from tissue properties enhances dosimetry accuracy, thus optimizing treatment outcomes and bolstering the effectiveness of PDT in cancer therapy.
Collapse
Affiliation(s)
- Hongjing Sun
- University of Pennsylvania, Department of Radiation Oncology, Philadelphia, Pennsylvania, United States
- University of Pennsylvania, Department of Bioengineering, Philadelphia, Pennsylvania, United States
| | - Yihong Ong
- University of Pennsylvania, Department of Radiation Oncology, Philadelphia, Pennsylvania, United States
| | - Weibing Yang
- University of Pennsylvania, Department of Radiation Oncology, Philadelphia, Pennsylvania, United States
| | - Dennis Sourvanos
- University of Pennsylvania, School of Dental Medicine, Department of Periodontics, Philadelphia, Pennsylvania, United States
- University of Pennsylvania, Schools of Engineering and Dental Medicine, Center for Innovation and Precision Dentistry, Philadelphia, Pennsylvania, United States
| | - Andreea Dimofte
- University of Pennsylvania, Department of Radiation Oncology, Philadelphia, Pennsylvania, United States
| | - Theresa M. Busch
- University of Pennsylvania, Department of Radiation Oncology, Philadelphia, Pennsylvania, United States
| | - Sunil Singhal
- University of Pennsylvania, Department of Surgery, Philadelphia, Pennsylvania, United States
| | - Keith A. Cengel
- University of Pennsylvania, Department of Radiation Oncology, Philadelphia, Pennsylvania, United States
| | - Timothy C. Zhu
- University of Pennsylvania, Department of Radiation Oncology, Philadelphia, Pennsylvania, United States
| |
Collapse
|
3
|
Hannan MN, Sharma AK, Baran TM. Preliminary measurements of optical properties in human abscess cavities prior to methylene blue photodynamic therapy. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2023; 12359:123590A. [PMID: 37860151 PMCID: PMC10585982 DOI: 10.1117/12.2648453] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
As part of our ongoing Phase 1 clinical trial to establish the safety and feasibility of methylene blue photodynamic therapy (MB-PDT) for human deep tissue abscess cavities, we have shown that determination of abscess wall optical properties is vital for the design of personalized treatment plans aiming to optimize light dose. To that end, we have developed and validated an optical spectroscopy system for the assessment of optical properties at the cavity wall, including a compact fiber-optic probe that can be inserted through the catheter used for the standard of care abscess drainage. Here we report preliminary findings from the first three human subjects to receive these optical spectroscopy measurements. We observed wide variability in concentrations of oxy- and deoxy-hemoglobin prior to MB administration, ranging from 7.3-213 μM and 0.1-47.2 μM, respectively. Reduced scattering coefficients also showed inter-patient variability, but recovered values were more similar between subjects (5.5-10.9 cm-1 at 665 nm). Further, methylene blue uptake was found to vary between subjects, and was associated with a reduction in oxygen saturation. These measured optical properties, along with pre-procedure computed tomography (CT) images, will be used with our previously developed Monte Carlo simulation framework to generate personalized treatment plans for individual patients, which could significantly improve the efficacy of MB-PDT while ensuring safety.
Collapse
Affiliation(s)
- Md Nafiz Hannan
- Department of Physics and Astronomy, University of Rochester, 601 Elmwood Ave., Rochester, NY 14642
| | - Ashwani K. Sharma
- Department of Imaging Sciences, University of Rochester, 601 Elmwood Ave., Rochester, NY 14642
| | - Timothy M. Baran
- Department of Imaging Sciences, University of Rochester, 601 Elmwood Ave., Rochester, NY 14642
- Department of Biomedical Engineering, University of Rochester, 601 Elmwood Ave., Rochester, NY 14642
- The Institute of Optics, University of Rochester, 601 Elmwood Ave., Rochester, NY 14642
| |
Collapse
|
4
|
Fang Y, Gong W, Li J, Li W, Tan J, Xie S, Huang Z. Toward image quality assessment in optical coherence tomography (OCT) of rat kidney. Photodiagnosis Photodyn Ther 2020; 32:101983. [PMID: 32896630 DOI: 10.1016/j.pdpdt.2020.101983] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/27/2020] [Accepted: 08/28/2020] [Indexed: 11/20/2022]
Abstract
BACKGROUND Optical coherence tomography (OCT) is a useful tool for the evaluation of structure and function of the kidney, but the image quality can be effected by many factors. OBJECTIVE The objective of this study was to assess the image quality of different OCT systems in OCT imaging of the living kidney. METHODS One swept-source OCT (SSOCT) of 1300 nm, one spectral domain OCT (SDOCT) of 1300 nm and another of 900 nm were used. A FeO phantom was used to establish the point spread function (PSF). Rat kidneys were imaged for image quality assessment. Light penetration in the kidney and the optical attenuation coefficient were also evaluated. The quantification of uriniferous tubules was carried out via the threshold segmentation of 3D OCT images. RESULTS The quality of kidney images was resolution dependent. SDOCT of 900 nm showed higher peak signal-to noise ratio and dynamic range. The spatial resolution in the light field could be derived from the PSF distribution along three mutually orthogonal axes. In conjunction with the PSF, the Lucy-Richardson algorithm could improve image quality but could not reveal more microstructural information. The penetration depth of 1300 nm was deeper than that of 900 nm. The attenuation coefficient of the kidney was 29 cm-1 at 1300 nm and 50 cm-1 at 900 nm (P < 0.001). More accurate measurement of uriniferous tubules was achieved with the SDOCT-900 due to its higher resolution. CONCLUSIONS Both SSOCT and SDOCT systems could be useful for imaging uriniferous tubules in the superficial layers of the cortex. The OCT image quality was highly correlated with the spatial resolution of OCT system.
Collapse
Affiliation(s)
- Yuhong Fang
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, 350007, China; College of Physics and Information Engineering, Minnan Normal University, Zhangzhou, 363000, China
| | - Wei Gong
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, 350007, China
| | - Junxia Li
- Department of Nephrology and Medicine, the 900th Hospital of Joint Logistic Support Force, Fuzhou, 350000, China
| | - Weijun Li
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, 350007, China
| | - Jianmin Tan
- Department of Nephrology and Medicine, the 900th Hospital of Joint Logistic Support Force, Fuzhou, 350000, China
| | - Shusen Xie
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, 350007, China.
| | - Zheng Huang
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, 350007, China; Department of Electrical Engineering, University of Colorado Denver, CO, USA.
| |
Collapse
|
5
|
Rutz J, Maxeiner S, Juengel E, Bernd A, Kippenberger S, Zöller N, Chun FKH, Blaheta RA. Growth and Proliferation of Renal Cell Carcinoma Cells Is Blocked by Low Curcumin Concentrations Combined with Visible Light Irradiation. Int J Mol Sci 2019; 20:ijms20061464. [PMID: 30909499 PMCID: PMC6471746 DOI: 10.3390/ijms20061464] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/13/2019] [Accepted: 03/21/2019] [Indexed: 12/17/2022] Open
Abstract
The anti-cancer properties of curcumin in vitro have been documented. However, its clinical use is limited due to rapid metabolization. Since irradiation of curcumin has been found to increase its anti-cancer effect on several tumor types, this investigation was designed to determine whether irradiation with visible light may enhance the anti-tumor effects of low-dosed curcumin on renal cell carcinoma (RCC) cell growth and proliferation. A498, Caki1, and KTCTL-26 cells were incubated with curcumin (0.1–0.4 µg/mL) and irradiated with 1.65 J/cm2 visible light for 5 min. Controls were exposed to curcumin or light alone or remained untreated. Curcumin plus light, but not curcumin or light exposure alone altered growth, proliferation, and apoptosis of all three RCC tumor cell lines. Cells were arrested in the G0/G1 phase of the cell cycle. Phosphorylated (p) CDK1 and pCDK2, along with their counter-receptors Cyclin B and A decreased, whereas p27 increased. Akt-mTOR-signaling was suppressed, the pro-apoptotic protein Bcl-2 became elevated, and the anti-apoptotic protein Bax diminished. H3 acetylation was elevated when cells were treated with curcumin plus light, pointing to an epigenetic mechanism. The present findings substantiate the potential of combining low curcumin concentrations and light as a new therapeutic concept to increase the efficacy of curcumin in RCC.
Collapse
Affiliation(s)
- Jochen Rutz
- Department of Urology, Goethe-University, D-60590 Frankfurt am Main, Germany.
| | - Sebastian Maxeiner
- Department of Urology, Goethe-University, D-60590 Frankfurt am Main, Germany.
| | - Eva Juengel
- Department of Urology, Goethe-University, D-60590 Frankfurt am Main, Germany.
- Current address: Department of Urology and Pediatric Urology, University Medical Center Mainz, D-55131 Mainz, Germany.
| | - August Bernd
- Department of Dermatology, Venereology, and Allergology, Goethe-University, D-60590 Frankfurt am Main, Germany.
| | - Stefan Kippenberger
- Department of Dermatology, Venereology, and Allergology, Goethe-University, D-60590 Frankfurt am Main, Germany.
| | - Nadja Zöller
- Department of Dermatology, Venereology, and Allergology, Goethe-University, D-60590 Frankfurt am Main, Germany.
| | - Felix K-H Chun
- Department of Urology, Goethe-University, D-60590 Frankfurt am Main, Germany.
| | - Roman A Blaheta
- Department of Urology, Goethe-University, D-60590 Frankfurt am Main, Germany.
| |
Collapse
|
6
|
Farokhnezhad M, Esmaeilzadeh M. Graphene coated gold nanoparticles: an emerging class of nanoagents for photothermal therapy applications. Phys Chem Chem Phys 2019; 21:18352-18362. [DOI: 10.1039/c9cp03126j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Optical and photothermal properties of graphene coated gold nanoparticles show that these nanoparticles are more suitable candidates for photothermal therapy applications.
Collapse
Affiliation(s)
- Mohsen Farokhnezhad
- Department of Physics
- Iran University of Science and Technology
- Narmak
- Tehran 16844
- Iran
| | - Mahdi Esmaeilzadeh
- Department of Physics
- Iran University of Science and Technology
- Narmak
- Tehran 16844
- Iran
| |
Collapse
|
7
|
Liu L, Wan W, Qin Z, Zhang L, Jiang J, Wang Y, Gao F, Zhao H. Determination of optical properties of turbid medium from relative interstitial CW radiance measurements using the incomplete P3 approximation. OPTICS EXPRESS 2017; 25:25295-25309. [PMID: 29041198 DOI: 10.1364/oe.25.025295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Interstitial determination of the tissue optical properties is important in biomedicine, especially for interstitial laser therapies. Continuous wave (CW) radiance techniques which examine light from multiple directions have been proposed as minimally invasive methods for determining the optical properties under an interstitial probe arrangement. However, both the fitting algorithm based on the P3 approximation and the analytical method based on the diffusion approximation (DA), which are currently used recovery algorithms, cannot extract the optical properties of tissue with low transport albedos accurately from radiance measurements. In this paper, we proposed an incomplete P3 approximation for the radiance, the P3in for short, which is the asymptotic part of the solution for the P3 approximation. The relative differences between the P3in and the P3 were within 0.48% over a wide range of clinically relevant optical properties for measurements at source detector separations (SDS) from 5 mm to 10 mm and angles from 0° to 160°. Based on the P3in, we developed an analytical method for extracting the optical properties directly using simple expressions constructed from the radiance measurements at only two SDSs and four angles. The developed recovery algorithm was verified by simulated and experimental radiance data. The results show that both the absorption and reduced scattering coefficients were recovered accurately with relative errors within 5.28% and 3.86%, respectively, from the simulated data and with relative errors within 10.82% and 10.67%, respectively, from the experimental data over a wide range of albedos from 0.5 to 0.99. Since the developed P3in-based radiance technique can obtain the optical properties rapidly from the measurements at only two SDSs and four angles, it is expected to be used for in vivo and in situ determination of the optical properties in online treatment planning during laser therapies.
Collapse
|
8
|
Farzam P, Johansson J, Mireles M, Jiménez-Valerio G, Martínez-Lozano M, Choe R, Casanovas O, Durduran T. Pre-clinical longitudinal monitoring of hemodynamic response to anti-vascular chemotherapy by hybrid diffuse optics. BIOMEDICAL OPTICS EXPRESS 2017; 8:2563-2582. [PMID: 28663891 PMCID: PMC5480498 DOI: 10.1364/boe.8.002563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 03/20/2017] [Accepted: 03/30/2017] [Indexed: 05/20/2023]
Abstract
The longitudinal effect of an anti-vascular endothelial growth factor receptor 2 (VEGFR-2) antibody (DC 101) therapy on a xenografted renal cell carcinoma (RCC) mouse model was monitored using hybrid diffuse optics. Two groups of immunosuppressed male nude mice (seven treated, seven controls) were measured. Tumor microvascular blood flow, total hemoglobin concentration and blood oxygenation were investigated as potential biomarkers for the monitoring of the therapy effect twice a week and were related to the final treatment outcome. These hemodynamic biomarkers have shown a clear differentiation between two groups by day four. Moreover, we have observed that pre-treatment values and early changes in hemodynamics are highly correlated with the therapeutic outcome demonstrating the potential of diffuse optics to predict the therapy response at an early time point.
Collapse
Affiliation(s)
- Parisa Farzam
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona),
Spain
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129,
USA
| | - Johannes Johansson
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona),
Spain
- Department of Biomedical Engineering, Linköping University, 58185 Linköping,
Sweden
| | - Miguel Mireles
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona),
Spain
| | - Gabriela Jiménez-Valerio
- Program Against Cancer Therapeutic Resistance (ProCURE), Catalan Institute of Oncology, Bellvitge Biomedical Research Institute – IDIBELL, 08908, L’Hospitalet de Llobregat (Barcelona),
Spain
| | - Mar Martínez-Lozano
- Program Against Cancer Therapeutic Resistance (ProCURE), Catalan Institute of Oncology, Bellvitge Biomedical Research Institute – IDIBELL, 08908, L’Hospitalet de Llobregat (Barcelona),
Spain
| | - Regine Choe
- Department of Biomedical Engineering, University of Rochester, Rochester, NY 14627,
USA
- Department of Electrical and Computer Engineering, University of Rochester, Rochester, NY 14627,
USA
| | - Oriol Casanovas
- Program Against Cancer Therapeutic Resistance (ProCURE), Catalan Institute of Oncology, Bellvitge Biomedical Research Institute – IDIBELL, 08908, L’Hospitalet de Llobregat (Barcelona),
Spain
| | - Turgut Durduran
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona),
Spain
- Instituciò Catalana de Recerca i Estudis Avançats (ICREA), 08015, Barcelona,
Spain
| |
Collapse
|
9
|
Johansson JD, Mireles M, Morales-Dalmau J, Farzam P, Martínez-Lozano M, Casanovas O, Durduran T. Scanning, non-contact, hybrid broadband diffuse optical spectroscopy and diffuse correlation spectroscopy system. BIOMEDICAL OPTICS EXPRESS 2016; 7:481-98. [PMID: 26977357 PMCID: PMC4771466 DOI: 10.1364/boe.7.000481] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 12/19/2015] [Accepted: 01/13/2016] [Indexed: 05/24/2023]
Abstract
A scanning system for small animal imaging using non-contact, hybrid broadband diffuse optical spectroscopy (ncDOS) and diffuse correlation spectroscopy (ncDCS) is presented. The ncDOS uses a two-dimensional spectrophotometer retrieving broadband (610-900 nm) spectral information from up to fifty-seven source-detector distances between 2 and 5 mm. The ncDCS data is simultaneously acquired from four source-detector pairs. The sample is scanned in two dimensions while tracking variations in height. The system has been validated with liquid phantoms, demonstrated in vivo on a human fingertip during an arm cuff occlusion and on a group of mice with xenoimplanted renal cell carcinoma.
Collapse
Affiliation(s)
- Johannes D. Johansson
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona), Spain
| | - Miguel Mireles
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona), Spain
| | - Jordi Morales-Dalmau
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona), Spain
| | - Parisa Farzam
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona), Spain
| | - Mar Martínez-Lozano
- Program Against Cancer Therapeutic Resistance (ProCURE), Catalan Institute of Oncology, Bellvitge Biomedical Research Institute–IDIBELL, 08908, L’Hospitalet de Llobregat (Barcelona), Spain
| | - Oriol Casanovas
- Program Against Cancer Therapeutic Resistance (ProCURE), Catalan Institute of Oncology, Bellvitge Biomedical Research Institute–IDIBELL, 08908, L’Hospitalet de Llobregat (Barcelona), Spain
| | - Turgut Durduran
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona), Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), 08015 Barcelona, Spain
| |
Collapse
|
10
|
Cuplov V, Buvat I, Pain F, Jan S. Extension of the GATE Monte-Carlo simulation package to model bioluminescence and fluorescence imaging. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:026004. [PMID: 24522804 DOI: 10.1117/1.jbo.19.2.026004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 01/07/2014] [Indexed: 06/03/2023]
Abstract
The Geant4 Application for Emission Tomography (GATE) is an advanced open-source software dedicated to Monte-Carlo (MC) simulations in medical imaging involving photon transportation (Positron emission tomography, single photon emission computed tomography, computed tomography) and in particle therapy. In this work, we extend the GATE to support simulations of optical imaging, such as bioluminescence or fluorescence imaging, and validate it against the MC for multilayered media standard simulation tool for biomedical optics in simple geometries. A full simulation set-up for molecular optical imaging (bioluminescence and fluorescence) is implemented in GATE, and images of the light distribution emitted from a phantom demonstrate the relevance of using GATE for optical imaging simulations.
Collapse
Affiliation(s)
- Vesna Cuplov
- Service Hospitalier Frédéric Joliot, Commissariat à l'Energie Atomique, 91401 Orsay, France
| | - Iréne Buvat
- Laboratoire Imagerie et Modélisation en Neurobiologie et Cancérologie, UMR 8165 CNRS-Université Paris 7-Université Paris 11, France
| | - Frédéric Pain
- Laboratoire Imagerie et Modélisation en Neurobiologie et Cancérologie, UMR 8165 CNRS-Université Paris 7-Université Paris 11, France
| | - Sébastien Jan
- Service Hospitalier Frédéric Joliot, Commissariat à l'Energie Atomique, 91401 Orsay, France
| |
Collapse
|
11
|
Baran TM, Fenn MC, Foster TH. Determination of optical properties by interstitial white light spectroscopy using a custom fiber optic probe. JOURNAL OF BIOMEDICAL OPTICS 2013; 18:107007. [PMID: 24150093 PMCID: PMC3805060 DOI: 10.1117/1.jbo.18.10.107007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 09/24/2013] [Indexed: 05/05/2023]
Abstract
We demonstrate interstitial recovery of absorption and scattering coefficients using a custom optical probe and a Monte Carlo (MC)-based recovery algorithm. The probe consists of six side-firing spectroscopy fibers contained in a 1.1-mm outer diameter cladding, with each fiber having a different axial and angular position on the probe. Broadband white light is delivered by one of the fibers and is detected steady-state by the remaining fibers. These spatially and spectrally resolved data are analyzed using a MC-based fitting algorithm in order to extract the local optical properties. The technique was verified in tissue-simulating phantoms consisting of Intralipid-20% as a scatterer and either manganese meso-tetra (4-sulfanatophenyl) porphine or intact human erythrocytes as an absorber. Absorption coefficients were recovered with a mean error of 9% and scattering coefficients were recovered with a mean error of 19%, whereas the hemoglobin oxygen saturation was recovered with a mean error of 12%. These results demonstrate the feasibility of optical property recovery for situations in which surface-contact spectroscopy is not a possibility, and where only a single probe can be inserted into the tissue.
Collapse
Affiliation(s)
- Timothy M. Baran
- University of Rochester Medical Center, Department of Imaging Sciences, Rochester, New York 14642
- Address all correspondence to: Timothy M. Baran, University of Rochester Medical Center, Department of Imaging Sciences, 601 Elmwood Avenue, Box 648, Rochester, New York 14642. Tel: +(585) 276-3188; Fax: +(585) 273-1033; E-mail:
| | - Michael C. Fenn
- University of Rochester, Department of Physics & Astronomy, Rochester, New York 14627
| | - Thomas H. Foster
- University of Rochester Medical Center, Department of Imaging Sciences, Rochester, New York 14642
- University of Rochester, Department of Physics & Astronomy, Rochester, New York 14627
| |
Collapse
|
12
|
Kannadorai RK, Liu Q. Optimization in interstitial plasmonic photothermal therapy for treatment planning. Med Phys 2013; 40:103301. [DOI: 10.1118/1.4810935] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
|