Diagnosis of transverse sinus hypoplasia in magnetic resonance venography: New insights based on magnetic resonance imaging in combined dataset of venous outflow impairment case-control studies: Post hoc case-control study

Ke Han, A. Ching Chao, Feng Chi Chang, Hung Yi Hsu, Chih Ping Chung, Wen Yung Sheng, Lung Chan, Jiang Wu, Han Hwa Hu

研究成果: 雜誌貢獻文章同行評審

7 引文 斯高帕斯(Scopus)

摘要

In previous studies of transverse sinus (TS) hypoplasia, discrepancies between TS diameter measured by magnetic resonance venography (MRV) and contrast T1-weighted magnetic resonance (contrast T1) were observed. To investigate these discrepancies, and considering that TS hypoplasia is associated with neurological disorders, we performed a post hoc analysis of prospectively collected data from 3 case-control studies on transient global amnesia (TGA), transient monocular blindness (TMB), and panic disorders while retaining the original inclusion and exclusion criteria. Magnetic resonance (MR) imaging of 131 subjects was reviewed to evaluate TS diameter and the location and degree of venous flow stenosis and obstruction. MRV without contrast revealed that TS hypoplasia was observed in 69 subjects, whom we classified into 2 subgroups according to the concordance with contrast T1 observations: concordance indicated anatomically small TS (30 subjects), and discrepancy indicated that the MRV diagnosis is in fact flow-related and that TS is not anatomically small (39 subjects). The latter subgroup was associated with at least 1 site of venous compression/stenosis in the internal jugular vein (IJV) or the left brachiocephalic vein (BCV) (P<0.001), which was significantly larger in patients than controls. Compensatory dilatation of contralateral TS diameter was only observed with MRV, not with contrast T1 imaging. The clinical implication of these results is that usingMRV only, IJV/ BCV compression/stenosis may be misdiagnosed as TS hypoplasia. And contralateral TS have no compensatory dilatation in its diameter in contrast T1 imaging, just compensatory increased flow volume.
原文英語
文章編號e2862
期刊Medicine (United States)
95
發行號10
DOIs
出版狀態已發佈 - 三月 4 2016

ASJC Scopus subject areas

  • Medicine(all)

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