Differentiation of transverse sinus thrombosis from congenitally atretic transverse sinus with time-resolved contrast-enhanced magnetic resonance angiography

Zhu, Yi-Cheng; Wang, D; Xie, Yanan; N, Mei; Li, X; Lu, Yiping; Yin, Bo

doi:10.1016/j.crad.2022.02.003

Cited by 1 publication

(2 citation statements)

References 26 publications

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“…The differences between our findings and literature reports regarding the T1, FLAIR, and DW signal of thrombosed segments can be explained by the fact that on the one hand, these reports included both acute and subacute CVTs 6,9,11,12,15,29,31 while our cohort only includes acute CVTs-and on the other hand that most of the studies focused on dural sinuses thrombosis, 6,11,12,15,30 while our series consider all venous segments.…”

Section: Discussioncontrasting

confidence: 93%

“…It is established that using both CE-MRV and non-contrast MRV (i.e., phase-contrast MRV and Inhance 3D Velocity useful when the use of gadolinium contrast is contraindicated), unilateral decreased signal/nonvisualization of the TS do not allow to differentiate them from TS thrombosis. [16][17][18][19][20][21][22][23][24][25][26][27][28][29] Recently, Zhu et al 30 reported that Time-Resolved MRA (TR-MRA) had higher accuracy in distinguishing TS thrombosis from TS hypoplasia.…”

Section: Discussionmentioning

confidence: 99%

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Comparison of susceptibility-weighted angiography (SWAN) and T2 gradient-echo sequences for the detection of acute cerebral venous thrombosis

2022

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Objectives To assess the diagnostic accuracy and lesion conspicuity of susceptibility-weighted angiography (SWAN) and T2* for the clot detection in acute cerebral venous thrombosis (CVT) by comparison with contrast-enhanced MR venography. Methods Venous thrombi detection and conspicuity were assessed by two readers for 18 venous segments on both T2*, SWAN source images, 2D SWAN reformats matching with T2*, and 3D SWAN images (SWAN-MinIP). Images obtained with the three reading techniques were systematically scored and compared to CE MRV findings, in a blinded fashion, per patient and per segment, and compared to each other. Results In 30 patients, 137 thrombosed venous segments were evaluated. The sensitivity of T2*, SWAN source images, 2D SWAN, and SWAN MinIP were, respectively, of 89.3%/82.1%, 82.1%, and 82.1% for dural sinus thrombosis and of 100%/100%/100%/96.6% for cortical venous thrombosis. There were significant differences in thrombus detection between T2* and SWAN: T2* versus SWAN source images and 2D SWAN ( p = 0.04) and versus SWAN MinIP ( p = 0.03). There were no significant differences between the three modalities of SWAN images. T2* was more sensitive than all SWAN images for both sigmoid sinus thrombosis and intracranial internal jugular vein thrombosis ( p = 0.04). Inter-observer agreement was slightly superior with T2* ( p < 0.05). Conclusion In this small cohort, SWAN sequence at 3T did not yield additional value for thrombus detection in acute CVT compared to T2*. This study highlights SWAN’s greatest weakness both for diagnostic accuracy and lesion conspicuity compared to T2* for acute venous clot detection near the skull base.

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