Seminar 2007 03 19 New X-Ray

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CISST ERC Seminar
Image Science for the New X-Ray: Taking NEQ to Task

Date: Monday, March 19, 2007
Time: 11:00pm
Place: Shaffer 304 (Monday!)

Speaker: Jeff Siewerdsen
Title: Image Science for the New X-Ray: Taking NEQ to Task
Presentation: PDF, not yet uploaded

Abstract

Medical imaging physics is rapidly approaching a gap in its ability to quantitatively evaluate imaging performance for a broad host of new technologies and applications. Prevalent Fourier metrics such as noise-equivalent quanta (NEQ), while experimentally and theoretically convenient, make no account of the structures of interest nor the information that one hopes to derive from an image - i.e., the imaging task. Furthermore, conventional approaches to NEQ must be reconsidered and extended to new dimensionality in a broad spectrum of novel imaging technologies, including dual-energy imaging, tomosynthesis, and cone-beam CT. This talk discusses research aimed at extending imaging physics to new temporal, energy, and 3D spatial domains and presents a practical task-driven methodology to performance evaluation that begins to bridge the gap between traditional Fourier descriptors and the performance of real (human or machine) observers. Applications in the development of novel technologies for diagnostic and image-guided interventions are discussed.