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Renal arterial stenoses: spiral CT angiography
M Galanski1, M Prokop, A Chavan
1Department of Diagnostic Radiology, Medical School Hannover, Germany.
Radiology
|October 1, 1993
Summary
Spiral computed tomography (CT) angiography is a promising method for screening renal artery stenosis. This technique accurately identifies stenosis and occlusion, aiding in the diagnosis of renovascular hypertension.
Area of Science:
- Radiology
- Vascular Imaging
- Nephrology
Background:
- Renovascular hypertension is often caused by renal artery stenosis.
- Accurate diagnosis of renal artery stenosis is crucial for effective treatment.
- Conventional angiography methods can be invasive.
Purpose of the Study:
- To evaluate the diagnostic role of spiral computed tomography (CT) angiography.
- To assess its efficacy in detecting renal artery stenoses.
Main Methods:
- Spiral CT angiography of renal arteries was performed in 22 patients with suspected renovascular hypertension.
- Comparison was made with arterial digital subtraction angiography (DSA).
- Optimized contrast timing and scanning protocols were utilized.
Main Results:
- Spiral CT angiography detected renal artery stenosis or occlusion in 15 of 22 patients (22 of 54 arteries).
- Findings were confirmed by DSA, demonstrating high accuracy.
- Image quality was good to excellent in most patients, with axial and multiplanar reformats proving superior for diagnosis.
Conclusions:
- Spiral CT angiography is a valuable and promising non-invasive screening tool for renal artery stenosis.
- It offers good visualization of renal arteries and associated pathologies.
- Further investigation may establish its role as a primary diagnostic modality.