Applied Photonics Initiative Indian Institute of Science (supported by SPIE/OSA/IEEE Photonics Students Chapters) Technical Talk Developing opto-acoustic based diagnostic devices: theory, measurement, design, optimization and tissue diagnosis Speaker : Samir Kumar Biswas, PhD Venue: Golden Jubilee Seminar Hall, ECE Dept,IISc Date/Time: 28 Nov (Friday) 4pm-5.30pm ALL ARE WELCOME Tea/Coffee Networking after the talk -------------------------------------------------------------------------- Abstract: Using light, the tissue activities such as metabolism, blood flow in tissue can be measured by correlating them with chromophores (haemoglobin, Melanin, water, lipid etc) concentration. Laser light based diagnostic methodologies for cancer , Rheumatoid arthritis disease are getting more important at present century due to its diagnostic potentiality of functional tissue imaging . As an example we can point out diffuse optical tomography where the tissue heterogeneity image is obtained based on absorption and scattering of light. Another example is the hybrid photoacoustic diagnostic modality where we see the conversion of optical energy into mechanical sound wave through molecular level physical phenomena which has potential to provide high resolution high contrast images of various diseased and normal tissues. In the first part of the talk, I shall talk about a new tissue diagnosis modality using laser light where the theoretical developments such as inverse problem for retrieving the interior tissue (diseased/normal) information from boundary measurements and instrument development for ex-vivo/ in-vivo composite tissue imaging of healthy human subjects will be presented. In particular, design and development of a purely optical imaging system will be discussed for the purpose of diagnosing composite bulky tissue in both animal/ human model. In second part of the talk, I shall talk about theory, proposed algorithms, optimization, design and development of ultrasound transducer and a hybrid diagnostic system using photoacoustic/ ultrasound principle. The developed algorithms and instrument will be presented for imaging angiogenesis and anatomical structure in human peripheral joints to detect and monitor the progress of rheumatoid arthritis disease. Speaker Bio: Samir Kumar Biswas obtained his PhD from Department of Physics, Indian Institute of Science (IISc), Bangalore, India in 2012 (Jan), Master of Science (MSc) in Physics from Indian Institute of Technology Bombay, India in 2006 and Graduated from Presidency College, Kolkata, India in 2004. His research area entails to biomedical science and diagnostic device. He did his Postdoctoral Research (since 2012 ) at Biomedical Photonics Group, University of Twente, Netherlands. https://sites.google/site/sam2012iisc/home
Posted on: Wed, 26 Nov 2014 11:44:48 +0000
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