Intraobserver and interobserver variability for measuring the wall area of the basilar artery at the level of the trigeminal ganglion on high-resolution MR images.
We evaluated the intraobserver and interobserver variability for WA measurement of an atherosclerotic BA by using HRMRI. Ten consecutive patients underwent HRMRI, and the WA of the BA at the level of the trigeminal ganglion was measured by 2 independent readers and repeated by 1 reader 1 month later. There was strong agreement for intraobserver and interobserver measurements in the ICC and by the Bland-Altman method. Measurement of the WA in an atherosclerotic BA by HRMRI was reproducible.
Department of Neurology and Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, China.
N
N
Ma
X
X
Lou
T-Q
TQ
Zhao
E-H-C
EH
Wong
W-J
WJ
Jiang
D000368:Aged; D050197:Atherosclerosis / Q000473:pathology*; D001488:Basilar Artery / Q000473:pathology*; D002545:Brain Ischemia / Q000473:pathology; D006801:Humans; D002546:Ischemic Attack, Transient / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000592:standards* / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D011446:Prospective Studies; D015203:Reproducibility of Results; D020521:Stroke / Q000473:pathology; D012668:Trigeminal Ganglion