Evaluation of brain and XXXX with 4D contrast-enhanced MR angiography at 3T.

@entity5 @entity135 @entity1
BACKGROUND AND PURPOSE: Systematic assessment of brain and @entity135 with 4D-CE-MRA at 3T has not been investigated. The purpose of this study was to test the hypothesis that 4D-CE-MRA at 3T can replace DSA in the identification of feeding arteries and @entity5 stain to plan interventional procedures in hypervascular brain and @entity135 . MATERIALS AND METHODS: Fifteen consecutive @entity1 with brain and @entity135 underwent 4D-CE-MRA at 3T and DSA. 4D-CE-MRA combined randomly segmented central k-space ordering, keyhole imaging, SENSE, and half-Fourier imaging. We obtained 30 dynamic scans every 1.9 seconds at an acquired spatial resolution of 0.9   0.9   1.5 mm; the matrix was 256   256. Two independent observers inspected the 4D-CE-MRA images for the main arterial feeders and @entity5 stain. Interobserver and intermodality agreement was assessed by k statistics. RESULTS: For 4D-CE-MRA, the interobserver agreement was fair with respect to the main arterial feeders and very good for the degree of @entity5 stain (k = 0.28 and 0.87, respectively). Intermodality agreement was moderate for the main arterial feeders (k = 0.45) and good for the @entity5 stain (k = 0.74). CONCLUSIONS: Although 4D-CE-MRA may be useful for evaluating @entity5 stain in hypervascular brain and @entity135 , it is not able to replace DSA in planning interventional procedures.
