MR angiography in pediatric XXXX .

@entity455 @entity75 @entity5 @entity16 @entity49 @entity3468 @entity439 @entity850 @entity1462
MR angiography using 3D and 2D time-of-flight techniques were used to evaluate pediatric @entity16 . MRA (arteriography) and MRV (venography) were abnormal in 63 and 45 cases, respectively. Conventional cerebral angiography was performed in 30 cases. These techniques were compared with MRI and conventional angiography. In addition, the value of MR angiography for surgical planning was subjectively evaluated. Our results showed that intracranial vessels were invariably better shown on MR angiography than on MRI. MRA and MRV were most useful in evaluating @entity455 related to @entity75 and @entity5 . MRA was valuable in detecting arterial narrowing but overestimated the degree of @entity850 compared with conventional angiography. MRV was the technique of choice for evaluation of dural sinus and @entity49 and compression. MRA played little to no role in preoperative @entity1462 and @entity439 . It did not appear to be accurate in assessing @entity5 vascularity or lesions in small arteries and @entity3468 .
