Photoacoustic Computed Tomography in Heterogeneous Acoustic Media: Status and Open Challenges

Tuesday, April 30, 2019 - 9:00am - 9:50am
Lind 305
Mark Anastasio (University of Illinois at Urbana-Champaign)
Photoacoustic computed tomography (PACT) is an emerging soft-tissue imaging modality that has great potential for a wide range of preclinical and clinical imaging applications. It can be viewed as a hybrid imaging modality in the sense that it utilizes an optical contrast mechanism combined with ultrasonic detection principles, thereby combining the advantages of optical and ultrasonic imaging while circumventing their primary limitations. In this talk, we review our recent advancements in image reconstruction approaches for PACT in acoustically heterogeneous media. Such advancements include physics-based models of the measurement process for both fluid and elastic media and associated optimization-based inversion methods. Applications of PACT to transcranial brain imaging will be presented. Open challenges related to the joint reconstruction of optical and acoustic parameters in PACT will also be presented.