Purpose To evaluate the diagnostic accuracy of @entity439 detection and the fidelity of morphologic characterization of three-dimensional (3D) @entity1054 ( @entity1054 ) magnetic resonance (MR) angiography at 3.0 T in @entity1 with a Glasgow @entity772 score of 15 and noncontrast material-enhanced computed tomography (CT) findings that showed acute nontraumatic @entity510 . Materials and Methods The institutional review board approved this prospective study, and @entity1 provided informed consent. A total of 277 @entity1 who had not experienced @entity130 but in whom nonenhanced CT showed @entity510 , who had a Glasgow @entity772 score of 15, and who underwent both 3D @entity1054 MR angiography and digital subtraction angiography (DSA) (the reference standard) were included. Three observers who were blinded to clinical and DSA results independently analyzed all 3D @entity1054 MR angiographic data sets. The receiver operating characteristic curve was applied to analysis of the detection of @entity439 with 3D @entity1054 MR angiography by using @entity1 - and @entity439 -based evaluations. Multivariate logistic regression analysis was performed to identify @entity439 -specific variables, including size, shape (daughter sac/lobulation/margin), neck width (wide if > 4 mm or if fundus-to-neck ratio was < 2), and relation to adjacent artery, that significantly affected morphologic assessment with 3D @entity1054 MR angiography. Results @entity439 were depicted with DSA in 225 @entity1 . In @entity1 - and @entity439 -based evaluations, respectively, 3D @entity1054 MR angiography yielded accuracies of 96.8% (268 of 277) and 96.6% (309 of 320), sensitivities of 98.2% (219 of 223) and 98.1% (260 of 265), specificities of 91% (49 of 54) and 89% (49 of 55), positive predictive values of 97.8% (219 of 224) and 97.7% (260 of 266), and negative predictive values of 92% (49 of 53) and 91% (49 of 54). Accuracy of display of morphologic features was 92.5% (236 of 255) for size, 86.3% (220 of 255) for neck width, 94.5% for shape (241 of 255), and 96.9% (247 of 255) for relationship to adjacent vessel. Width of @entity439 neck was the only variable that significantly affected the morphologic assessment of 3D @entity1054 MR angiography (odds ratio, 0.378; 95% confidence interval: 0.337, 8.347; P = .004). Conclusion Three-dimensional @entity1054 MR angiography can accurately depict @entity438 and accurately display their morphologic features in stable @entity1 with @entity510 and a Glasgow @entity772 score of 15. (  ) RSNA, 2017.

@entity510 in XXXX with Good Clinical Grade: Accuracy of 3.0-T MR Angiography for Detection and Characterization.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity510 :: ('MESH:D013345', 'Disease') :: ['subarachnoid hemorrhage'] @entity772 :: ('MESH:D003128', 'Disease') :: ['coma'] @entity439 :: ('MESH:D000783', 'Disease') :: ['aneurysms', 'Aneurysms', 'aneurysm'] @entity1054 :: ('MESH:D000377', 'Disease') :: ['time-of-flight', 'TOF'] @entity130 :: ('MESH:D014947', 'Disease') :: ['trauma'] @entity438 :: ('MESH:D002532', 'Disease') :: ['cerebral aneurysms']
@entity1 :: (9606,Species) :: ['Patients']
