In vivo optoacoustic temperature imaging for image-guided cryotherapy of prostate cancer

Physics in Medicine and Biology
Elena V PetrovaSergey A Ermilov

Abstract

The objective of this study is to demonstrate in vivo the feasibility of optoacoustic temperature imaging during cryotherapy of prostate cancer. We developed a preclinical prototype optoacoustic temperature imager that included pulsed optical excitation at a wavelength of 805 nm, a modified clinical transrectal ultrasound probe, a parallel data acquisition system, image processing and visualization software. Cryotherapy of a canine prostate was performed in vivo using a commercial clinical system, Cryocare® CS, with an integrated ultrasound imaging. The universal temperature-dependent optoacoustic response of blood was employed to convert reconstructed optoacoustic images to temperature maps. Optoacoustic imaging of temperature during prostate cryotherapy was performed in the longitudinal view over a region of 30 mm (long)  ×  10 mm (deep) that covered the rectum, the Denonvilliers fascia, and the posterior portion of the treated gland. The transrectal optoacoustic images showed high-contrast vascularized regions, which were used for quantitative estimation of local temperature profiles. The constructed temperature maps and their temporal dynamics were consistent with the arrangement of the cryoprobe and readouts of the thermal...Continue Reading

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Citations

Nov 16, 2019·Physics in Medicine and Biology·Gijs van Soest, Adrien Desjardins
Mar 30, 2019·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·Yoko MiuraRalf Brinkmann
Jul 26, 2019·Physics in Medicine and Biology·Xosé Luís Deán-Ben, Daniel Razansky
Nov 22, 2019·Experimental Biology and Medicine·Madhumithra S Karthikesh, Xinmai Yang
Mar 1, 2019·Scientific Reports·Yan YanMohammad Mehrmohammadi
Dec 1, 2020·Temperature : Multidisciplinary Biomedical Journal·Juho RaikoTeija Sainio

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