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Black‐blood MR angiography with grase: Measurement of flow‐induced signal attenuation

1998; Wiley; Volume: 8; Issue: 6 Linguagem: Inglês

10.1002/jmri.1880080623

1522-2586

Beverly Yu, Hernán Jara, Elias R. Melhem, Shelton D. Caruthers, E. Kent Yucel,

Advanced Neuroimaging Techniques and Applications

Abstract We investigated the feasibility of performing black‐blood MR angiography (MRA) with the gradient and spin‐echo (GRASE) pulse sequence. Phantom experiments and human testing were conducted, and the results were compared with those of turbo spin‐echo (TSE). We demonstrated that both techniques are able to produce signal suppression of flowing fluid to background level. With fewer radiofrequency (RF)‐refocusing pulses, GRASE pulse sequences could serve as an alternative black‐blood technique of reduced RF power exposure and shorter scan time. These relative advantages of GRASE may become useful when high‐resolution images are taken.