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American Journal of Neuroradiology, Vol 19, Issue 7 1297-1300, Copyright © 1998 by American Society of Neuroradiology

ARTICLES

Real-time reconstruction and high-speed processing in functional MR imaging

CC Lee, CR Jack Jr, PJ Rossman and SJ Riederer
Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905, USA.

Access to fully processed activation maps in near real time during a functional MR examination enables run-to-run assessment of results. This is particularly useful in clinical studies, since the results of the functional MR examination can be ascertained before the patient leaves the MR suite, permitting interactive tailoring of the functional MR study. We describe how a real-time MR system can be customized to complete the following tasks in less than 3 minutes: obtain an 81- second acquisition of a multisection functional MR imaging time series using single-shot echo-planar imaging, perform image reconstruction, extract functional MR activation maps using cross-correlation and thresholding, and superimpose activation maps on previously acquired T1- weighted anatomic images.




Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X