Application Of The Elderly Benign Paroxysmal Positional Vertigo Brain In Sensitive Weighted Imaging

Objective: The use of brain MRI susceptibility weighted imaging( SWI) combined with conventional unenhanced MRI and MRA examination, Discussion signal characteristics of SWI in elderly benign paroxysmal positional vertigo(BBPV),and relationship with intracranial vascular factors.Methods: Subjects were divided into two groups. Clinical diagnosis of 25 cases of patients BBPV as study group and 25 patients without vertigo normal volunteers as a control group, two groups were aged ≥60 years. Using Philips3.0 magnetic resonance imager for all subjects cranial MRI scan, MRA and SWI sequence scanning, the number of cases was observed between the two groups of cerebral hemorrhage micro(CMBs) occurs, the number, SWI image venules display cases, white matter loose(LA) level, the number of lacunar infarct lesions, vertebral artery and basilar artery morphology advantages and analyzed two sets of data.Results:1、The number of infarction in 25 BBPV patients is 2.000±2.799, compared with 0.560±1.044(t=2.410,P<0.05) in control, Leukoaraiosis level divided into 4:O(5 cases / 11 cases), grade I(8 cases / 12 cases) and class II(9cases/ 2cases), level III(3/0),(X2=9.967, P < 0.05).Difference between the two groups have statistical significance. The positive detection rate of micro brain bleeding is 44% versus 20%( x2=3.309,P>0.05), The number of CMBs in 25 BBPV patients is 1.360±2.514, compared with 0.320±0.748(t=1.982,P﹥0.05) in control, which all have no statistical significance;2、CMBs is shown on the SWI image as small circular signal loss area, when conventional T1WI、T2WI sequence CMBs missed.3、SWI image showed that BBPV patients have more venules compared with the control.4、BBPV group patients have greater vertebral artery advantage than the control group, which is supported by statistical significance(x2= 3.945,P=0.044), while basal artery tortuosity is higher than the control group and have no statistical significance(x2=2.000,P=0.145).Conclusion:1、The elderly benign paroxysmal positional vertigo is connected with intracranial vascular lesions, which we can infer that vascular factors may play an important role in the onset of elderly Benign Paroxysmal Positional Vertigo(BPPV);2、CMBs and small intracranial venous compensatory increase of patients with Benign Paroxysmal Positional Vertigo(BPPV) can be detected in SWI sequence;3、Basilar artery abnormalities and elderly BPPV have correlation;...