Related Experiment Video
Updated: Jan 25, 2026

Comprehensive Endovascular and Open Surgical Management of Cerebral Arteriovenous Malformations
Published on: October 20, 2017
Predictors of successful endovascular treatment in severe cerebral venous sinus thrombosis
Xiaoxu Yang1, Fang Wu1, Yuehong Liu1
1Department of Radiology Xuanwu Hospital Beijing China.
Insights
Acute clot sign on MRBTI predicts successful recanalization in severe cerebral venous sinus thrombosis (CVT) patients undergoing endovascular therapy. This imaging technique aids in selecting appropriate CVT patients for treatment.
Area of Science:
- Neurology
- Radiology
- Interventional Radiology
Background:
- Cerebral venous sinus thrombosis (CVT) is a serious condition requiring effective treatment.
- Identifying patients likely to benefit from endovascular therapy is crucial for optimizing outcomes.
Purpose of the Study:
- To evaluate thrombus characteristics that predict recanalization extent in severe CVT.
- To identify patients most likely to benefit from endovascular therapy.
Main Methods:
- Prospective study of severe CVT patients undergoing endovascular treatment.
- Magnetic resonance black-blood thrombus imaging (MRBTI) assessed clot signal-to-noise ratio, age, and volume.
- Digital subtraction angiography (DSA) evaluated recanalization post-treatment.
Main Results:
- Acute clot sign (ACS) on MRBTI was significantly associated with complete recanalization (P < 0.001).
- No significant difference in baseline clot volume between complete and partial recanalization groups.
- MRBTI identified ACS in 39 and subacute clot sign (SCS) in 71 of 110 thrombosed segments.
Conclusions:
- ACS on MRBTI can predict complete recanalization in CVT patients undergoing endovascular therapy.
- MRBTI is a valuable tool for assessing clot composition and guiding treatment selection for CVT.
Objective:
The objective of this study was to evaluate the thrombus characteristics affecting the extent of recanalization to identify patients with severe cerebral venous sinus thrombus (CVT) more likely to benefit from endovascular therapy.
Methods:
Severe CVT patients scheduled for endovascular treatment were prospectively recruited into the study. Each thrombosed venous segment was evaluated regarding complete or partial recanalization based on digital subtraction angiography (DSA) after treatment. Magnetic resonance black-blood thrombus imaging (MRBTI) was performed 1 day before endovascular treatment. The signal-to-noise ratio (SNR) of the clot, age of the clot, and baseline volume of the clot were compared between the complete and partial recanalization groups. A logistic regression analysis was performed to identify the association between these clot characteristics and recanalization status.
Results:
Twenty-one CVT patients undergoing endovascular therapy were prospectively included. There were 110 thrombosed segments, 54 of these segments were completely recanalized after endovascular treatment. An acute clot sign (ACS) was found in 39 segments and a subacute clot sign (SCS) was found in 71 segments. There was no significant difference on baseline volume of the clot (1638.8 ± 1432.2 mm3 vs. 1957.5 ± 2056.1 mm3, P > 0.05) between the complete and partial recanalization groups. Logistic regression analysis showed that ACS on MRBTI was associated with complete recanalization (P < 0.001, odds ratio = 3.937, 95% confidence interval, 1.6-9.5).
Interpretation:
ACS can be used to predict complete recanalization in patients undergoing endovascular treatment. MRBTI provides a robust method to define clot composition and is potentially useful in selecting the most appropriate CVT patients for endovascular treatment.
Related Concept Videos
Venous Thrombosis I: Introduction
Venous Thrombosis III: Interprofessional Care
Venous Thrombosis IV: Nursing Management
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies
Ecological Succession
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...

