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dc.contributor.advisorJaya Prakash
dc.contributor.authorDravid, Yash
dc.date.accessioned2024-04-03T04:14:14Z
dc.date.available2024-04-03T04:14:14Z
dc.date.submitted2023
dc.identifier.urihttps://etd.iisc.ac.in/handle/2005/6464
dc.description.abstractMonitoring temperature in biological tissue is vital for different therapy applications like photo-thermal therapy, high-intensity focused ultrasound therapy, etc. Photoacoustic imaging has been used for volumetric temperature imaging in the time domain. In this thesis, we analyzed the photoacoustic (PA) signals in the frequency domain as a function of temperature and explored the possibility of measuring the absolute temperature of the medium being investigated. Photoacoustic magnitude ratios and phase differences were used to measure the absolute temperature of the sample. Further, the magnitude ratio and phase difference corresponded well with the analytical solution and numerical simulations. Multiple measurements were performed to compare the differences between the estimated and ground truth temperatures (measured using a thermal camera). The results indicate that the estimated temperatures were accurate, with mean error ranging between 0.6°C - 1°C (clinically acceptable) with phantoms and ex-vivo samples.en_US
dc.description.sponsorshipDepartment of Biotechnology (DBT) through the Innovative Young Biotechnologist Fellowship (IYBF) Program, Meggitt corporate social responsibility (CSR), Science and Engineering Research Board (SERB)-Startup Research Grant (SRG), Indian Institute of Science (IISc) Startupen_US
dc.language.isoen_USen_US
dc.relation.ispartofseriesET00473
dc.rightsI grant Indian Institute of Science the right to archive and to make available my thesis or dissertation in whole or in part in all forms of media, now hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertationen_US
dc.subjectBiomedical Engineeringen_US
dc.subjectInstrumentation Technology and Applied Physicsen_US
dc.subjectSensing
dc.subjectPhotoacoustic Imaging
dc.subjectPhotoacoustic Sensing
dc.subjecttemperature monitoring
dc.subjecttemperature measurement
dc.subject.classificationResearch Subject Categories::TECHNOLOGY::Engineering physicsen_US
dc.titleFrequency Domain Photoacoustic Signal Analysis for Temperature Sensingen_US
dc.typeThesisen_US
dc.degree.nameMTech (Res)en_US
dc.degree.levelMastersen_US
dc.degree.grantorIndian Institute of Scienceen_US
dc.degree.disciplineEngineeringen_US


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