Journal
PHYSICS IN MEDICINE AND BIOLOGY
Volume 50, Issue 19, Pages 4491-4505Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0031-9155/50/19/005
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A new EPI-based method is presented which features optimized sampling of k-space enabling the integrated acquisition of two gradient echo images. The first of these images is predominantly T, weighted and the second is T-2* weighted. The new method combines echo sharing of sparsely acquired high spatial frequency components with the keyhole technique and half-Fourier image reconstruction. The feasibility of acquiring high spatial and temporal resolution in vivo images for perfusion mapping is demonstrated. In contrast to most current perfusion methods, which acquire the T-1- and T-2*-weighted images in separate acquisitions, the need for image co-registration here is obviated since both sets of images are EPI-based and are acquired within the same measurement.
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