Technical Program

Paper Detail

Paper:	FR-AM-OS1.1
Session:	PET and SPECT Image Reconstruction
Time:	Friday, April 7, 09:30 - 09:50
Presentation:	Oral
Title:	Motion-Compensated Dynamic Image Reconstruction for Gated Cardiac Spect
Authors:	Mingwu Jin; Illinois Institute of Technology
	Yongyi Yang; Illinois Institute of Technology
	Miles N. Wernick; Illinois Institute of Technology
	Michael A. King; University of Massachusetts Medical School
Abstract:	In this paper we propose a unified image reconstruction procedure for dynamic images from traditional gated SPECT acquisition. We divide the cardiac cycle into a number of gate intervals as in gated SPECT, but treat the tracer distribution for each gate as a time-varying signal. By using dynamic expectation maximization and motion-compensated temporal regularization, our reconstruction procedure can produce an image sequence that shows both cardiac motion and time-varying tracer distribution simultaneously. We simulated gated cardiac perfusion imaging using the gated mathematical cardiac-torso (gMCAT) phantom with Tc99m-Teboroxime dynamics. Our experimental results show that the proposed methods can produce more accurate reconstruction of gated dynamic images than independent reconstruction of individual gate frames with spatial smoothness alone.

ISBI 2006 is sponsored by

and organized in cooperation with