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[Carotid angiography by magnetic resonance]
J M Friedrich1, H A Nöldecke, R Tomczak
1Service de Radiologie, Centre Hospitalier Universitaire, ULM Allemagne.
Annales De Cardiologie Et D'Angeiologie
|October 1, 1993
Summary
Magnetic resonance angiography (MRA) reliably detects arteriosclerotic lesions in supra-aortic vessels. The 3D FISP technique is a safe screening tool, offering a good overview without missing severe stenosis.
Area of Science:
- Vascular Imaging
- Radiology
- Cardiovascular Medicine
Background:
- Arteriosclerotic lesions in supra-aortic vessels pose significant health risks.
- Accurate imaging is crucial for diagnosing and managing these conditions.
Purpose of the Study:
- To compare the reliability of three magnetic resonance angiography (MRA) techniques against Digital Subtraction Angiography (DSA).
- To evaluate the effectiveness of MRA in assessing the degree of stenosis in supra-aortic vessels.
Main Methods:
- Magnetic Resonance Imaging (MRI) was used to evaluate 50 patients with suspected stenotic lesions.
- Three MRA techniques were compared: Spin Echo (SE), Gradient Echo 2D FLASH, and Gradient Echo 3D FISP.
- Digital Subtraction Angiography (DSA) served as the reference standard.
Main Results:
- High reliability was observed across all tested MRA techniques compared to DSA.
- Correlation coefficients with DSA were: SE (87%), 2D FLASH (78%), and 3D FISP (83%).
- The 3D FISP technique showed no false negatives for severe stenosis, despite potentially exaggerating stenosis degree.
Conclusions:
- MRA techniques, particularly 3D FISP, are highly reliable for demonstrating arteriosclerotic lesions in supra-aortic vessels.
- The 3D FISP technique is a safe and effective screening method, providing a comprehensive overview.
- MRA is a valuable tool for diagnosing and evaluating supra-aortic vessel stenosis.