The frequency of MR angiography (MRA) used to diagnose @entity9085 appears high. Findings of abnormality by MRA show cases with @entity432 . In such cases, it is unclear whether these are due to @entity5525 or to the existence of morbid constriction, thus requiring confirmation by a vertebral arteriography (VAG). We observe the vascular morphology of vertebral artery by Computed tomography (CT) scanning for screening @entity1457 . In photography and CT scan reading, the region was severally photographed between foramen magnum and aortic arch by plain CT and contrast CT at a slice of 5 mm. The constrictive region of the vertebral artery was estimated by comparing plain and contrast CT. Subjects were 34 clinical cases of vascular maldescription in the vertebrobasilar artery, nearly no blood vessel description, or blood vessel winding or inclination. We determined the constrictive morbid state of the @entity5525 and cervical @entity85 . In findings of maldescription by MRA, it was suggested that discrimination is feasible to a certain degree, whether the vertebral artery has a morbid constrictive region or due to @entity4575 . Our results suggest that screening by CT scanning may be more efficient than that by MRA.

[CT screening of XXXX ].

@entity5525 :: ('MESH:C538664', 'Disease') :: ['vertebral or subclavian artery', 'anaplasia of the vertebral artery'] @entity1457 :: ('MESH:D012769', 'Disease') :: ['circulatory disorders'] @entity9085 :: ('MESH:D014715', 'Disease') :: ['vertebrobasilar insufficiency'] @entity4575 :: ('MESH:D000708', 'Disease') :: ['anaplasia'] @entity432 :: ('MESH:D001157', 'Disease') :: ['maldescription of hemivertebral artery'] @entity85 :: ('MESH:D009140', 'Disease') :: ['vertebra deformity']
@entity1457 :: (MESH:D012769,Disease) :: ['vertebrarterial circulatory disorder']
