2023年10月6日 · CT and MR angiography are most useful in defining the level and the degree of stenosis of arteries supplying the posterior circulation. The gold standard is intra-arterial angiography but this is not employed as first-line as it is invasive and carries a 1-2% risk of stroke.

Vertebrobasilar insufficiency (VBI) occurs when blood flow to the back of your brain lessens or ends. This part of your brain controls movement and balance, so VBI can lead to difficulty swallowing, dizziness and numbness. Hardening of your …

2023年7月17日 · Vertebrobasilar insufficiency (VBI) is defined by inadequate blood flow through the posterior circulation of the brain, supplied by the 2 vertebral arteries that merge to form the basilar artery. The vertebrobasilar arteries supply the …

2015年9月2日 · Doppler ultrasonography and magnetic resonance imaging (MRI) are two important measures for diagnosis of VBI (5, 6). On T2 weighted noncontrast axial MRI sequences, “slice-entry phenomenon” can exist due to the variability of blood flow in vertebral arteries (3).

To estimate the usefulness of magnetic resonance imaging (MRI) in diagnosing vertebro-basilar insufficiency (VBI), 41 VBI patients with vertigo or dizziness and 26 subjects without vertigo or dizziness (as control) were examined by MRI. Sixty-eight …

Objective To review the literature regarding the three available diagnostic testing in patients with dizziness complaints secondary to vertebrobasilar insufficiency (VBI): magnetic resonance angiography; transcranial Doppler ultrasound; and vertebrobasilar deprivation testing.

In order to evaluate diagnostic usefulness of MRI in vertebrobasilar insufficiency (VBI), we performed magnetic resonance imaging (MRI) and MR angiography (MRA) in 90 patients presenting vertigo and dizziness as an initial and cardinal complaint. High signals observed by T2-weighted imaging in the b …

研究人员对1966-2017年间PubMed收录的相关研究进行检索，考察了4种隐性VBI-MRI标志（血管来源的白质高强度[WMH]、MRI定义的隐匿性脑梗死[BIs]、脑微出血[CMBs]以及血管周围间隙[PVSs]）与中风，痴呆以及死亡的相关性。

Vascular brain injury (VBI) may be an under-recognised contributor to mobility impairment. We examined associations between MRI VBI biomarkers and impaired mobility. We separately analysed Atherosclerosis Risk in Communities (ARIC) and UK Biobank ...

MRI and CE-MRA have some advantages to CT in diagnosis of the VBI. MRI [ 1 ] The CE-MRA (Contrast-enhanced magnetic resonance angiography)had the highest sensitivity and specificity compared against the gold standard of intra-arterial angiography.