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Updated: Feb 7, 2026

Analysis of Cerebral Vasospasm in a Murine Model of Subarachnoid Hemorrhage with High Frequency Transcranial Duplex Ultrasound
Published on: June 3, 2021
Transcranial Doppler in the Diagnosis of Cerebral Vasospasm: An Updated Meta-Analysis
Jean-Mathieu Mastantuono1, Christophe Combescure2,3, Nadia Elia1,3,4
1Division of Anesthesiology, Department Anesthesiology, Pharmacology & Intensive Care Medicine, Geneva University Hospitals, Geneva, Switzerland.
Insights
Transcranial Doppler (TCD) and transcranial color-coded duplex Doppler (TCCD) can detect cerebral vasospasm after aneurysm rupture but cannot reliably exclude it. TCCD shows slightly better performance for the middle cerebral artery.
Area of Science:
- Neurology
- Radiology
- Medical Imaging
Background:
- Cerebral vasospasm is a serious complication following aneurysm rupture.
- Accurate diagnostic tools are crucial for timely intervention.
- Transcranial Doppler (TCD) and transcranial color-coded duplex Doppler (TCCD) are non-invasive methods used to assess cerebral blood flow.
Purpose of the Study:
- To evaluate the diagnostic performance of TCD and TCCD in detecting cerebral vasospasm.
- To compare TCD and TCCD against angiography, the gold standard, in patients with aneurysm rupture.
Main Methods:
- A systematic review and meta-analysis of randomized studies comparing TCD or TCCD with angiography.
- Searched MEDLINE, Embase, and Central databases from January 2001 to October 2017.
- Used bivariate models to pool sensitivity and specificity data.
Main Results:
- Included 18 studies (15 on TCD, 3 on TCCD).
- For the middle cerebral artery, pooled sensitivity was 66.7% and specificity 89.5% for TCD.
- For the middle cerebral artery, pooled sensitivity was 81.5% and specificity 96.6% for TCCD.
Conclusions:
- Both TCD and TCCD are likely to detect cerebral vasospasm but are not reliable for excluding it.
- No convincing evidence suggests TCCD is superior to TCD in accuracy.
- Limited evidence exists for TCD's usefulness in arteries other than the middle cerebral artery.
Objectives:
To evaluate the performance of transcranial Doppler and transcranial color-coded duplex Doppler in patients with cerebral vasospasm due to aneurysm rupture. Angiography was considered as the gold standard comparator.
Data Sources:
Search in MEDLINE, Embase, and Central from January 2001 to October 2017, without language restriction. Bibliographies of retrieved articles were screened for additional studies.
Study Selection:
Randomized studies comparing transcranial Doppler or transcranial color-coded duplex Doppler with angiography in adults.
Data Extraction:
Data were extracted independently by several investigators. Sensitivity and specificity were combined across studies using a bivariate model. Preferred Reporting Items for Systematic Reviews and Meta-Analyses was used for reporting and Quality Assessment of Diagnostic Accuracy Studies-2 for quality assessment.
Data Synthesis:
We included 18 studies. Fifteen tested transcranial Doppler. For the middle cerebral artery (10 studies, 1,408 tests), the pooled sensitivity was 66.7% (95% CI, 55.9-75.9) and specificity was 89.5% (80.3-94.7). Three studies (278 tests) tested transcranial color-coded duplex Doppler for the middle cerebral artery. The pooled sensitivity was 81.5% (66.0-90.0), and specificity was 96.6% (93.0-98.0). For an arbitrarily chosen prevalence of vasospasm of 70%, positive and negative predictive values were 93.7% (88.9-96.6) and 53.4% (46.7-60.9) for transcranial Doppler and 98.2% (96.4-99.1) and 69.1% (56.1-80.9) for transcranial color-coded duplex Doppler.
Conclusions:
Assuming a high prevalence of vasospasm of the middle cerebral artery, both transcranial Doppler and transcranial color-coded duplex Doppler are likely to detect it, but neither is useful to exclude it. There is no convincing evidence that the accuracy of transcranial color-coded duplex Doppler is any better than that of transcranial Doppler. For arteries other than middle cerebral artery, there is a lack of evidence of the usefulness of transcranial Doppler.
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