Nixon & Vanderhye P.C.
Non-contrast MRI with differentiation of ischemic, infarct and normal tissue
Elicited MRI signals are processed into MR image data in conjunction (a) with use of an initial spatially-selective RF tag pulse (tag-on) and (b) without use of an initial spatially-selective NMR RF tag pulse (tag-off) in respectively corresponding data acquisition subsequences. Multi-dimensional tag-on and tag-off data acquisition subsequences are used for each of plural time-to-inversion (TI) intervals without using an injected contrast agent. Acquired image data sets are subtracted for each TI interval to produce difference values as a function of time representing blood perfusion for the ROI that differentiates between normal, ischemic and infarct tissues.
TOSHIBA MEDICAL SYSTEMS CORPORATION
G A A G G A A G
G06T A61B A61B G01R G06T A61B A61B G06T
additional additional inventional inventional inventional inventional additional additional
Tsutomu Xiangzhi Mitsue
Hoshino Zhou Miyazaki