Volumetric Postcontrast T1 Turbo Spin-Echo vs Gradient-Recalled Echo MR Sequences for Detecting Brain Metastases: A Systematic Review and Meta-Analysis.
Anass Benomar, Sukhmanjit S Ghumman, Youcef Ouahdi et al.
✦ AI-curated · Sources linked
In 30 seconds
This systematic review and meta-analysis evaluated the diagnostic performance of postcontrast 3D T1 Turbo Spin-Echo (TSE) versus Gradient-Recalled Echo (GRE) MRI sequences for detecting brain metastases in 544 patients. The study found that TSE sequences had a pooled sensitivity of 97.4% compared to 76.1% for GRE sequences, with a significant comparative odds ratio of 12.0 (P < .0001).
Key findings
- Pooled sensitivity for TSE was 97.4% vs 76.1% for GRE sequences.
- TSE detected small lesions (<5 mm) with 96.1% sensitivity compared to 58.4% for GRE.
- TSE had a higher contrast-to-noise ratio and interrater agreement than GRE.
- False positives were more common with TSE, totaling 49 compared to 35 for GRE.
Why it matters
The findings highlight the superior sensitivity of TSE sequences for detecting brain metastases, especially smaller lesions, which is crucial for timely and effective patient management. Understanding these differences can guide radiologists in selecting appropriate imaging techniques.
What to keep in mind
The meta-analysis is limited by high heterogeneity, case-only studies, possible small-study effects, and a high risk of bias for the reference standard domain.