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[MR imaging of basilar artery aneurysms]
Rinsho Hoshasen. Clinical Radiography
|April 1, 1990
Abstract:
Eight patients with basilar artery aneurysms (five fusiform, two saccular and one giant aneurysm) were studied by MRI at 1.5 tesla. Dilated lumen of basilar artery was detected in seven of eight patients on T2-weighted axial images. Deformity of pons was demonstrated in six of eight patients on T1-weighted midsagittal images. A fusiform aneurysm, 5 mm in diameter, could not be diagnosed by MRI. It was therefore concluded that MR imaging is relatively useful for diagnosing basilar artery aneurysms.
Insights
Magnetic Resonance Imaging (MRI) is useful for diagnosing basilar artery aneurysms. MRI detected dilated lumens in seven of eight patients, though it missed one small fusiform aneurysm.
Area of Science:
- Neuroradiology
- Vascular Neurology
- Medical Imaging
Context:
- Basilar artery aneurysms present a diagnostic challenge.
- Magnetic Resonance (MR) imaging is a key tool in neurovascular diagnostics.
Purpose:
- To evaluate the utility of 1.5 tesla MR imaging in diagnosing basilar artery aneurysms.
- To identify specific MR imaging features indicative of basilar artery aneurysms.
Summary:
- MR imaging (1.5 tesla) was performed on eight patients with basilar artery aneurysms.
- T2-weighted axial images detected dilated basilar artery lumens in seven patients.
- T1-weighted midsagittal images showed pontine deformity in six patients.
- A small 5 mm fusiform aneurysm was not detected by MRI.
Impact:
- MR imaging demonstrates relative utility in diagnosing basilar artery aneurysms.
- Highlights limitations of MRI for small fusiform aneurysms.
- Informs clinical practice regarding MR imaging protocols for basilar artery pathology.