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MR digital subtraction angiography in the diagnosis of meningiomas
Kazuhiro Tsuchiya1, Shichiro Katase, Ayako Yoshino
1Department of Radiology, Kyorin University School of Medicine 6-20-2, Shinkawa, Mitaka, Tokyo 181-8611, Japan. tsuchiyak-kyr@umin.ac.jp
Objective:
MR digital subtraction angiography (DSA) is a technique for demonstrating the vasculature combining a rapid two-dimensional T1-weighted sequence with a bolus injection of gadolinium. We attempted to determine its contribution to the diagnosis of intracranial meningiomas.
Methods And Patients:
MR DSA was performed in 18 patients with meningioma as well as in 28 patients with other tumors. The findings were analyzed regarding demonstration of tumor stain and tumor-related vessels.
Results:
All meningiomas except one were visualized as a homogeneous and intense stain. Feeding arteries were visualized in 2 patients, and draining or abnormal veins in three. In 21 of the 28 patients with other tumors, tumor stains of varying degrees were demonstrated.
Conclusion:
MR DSA can serve as an adjunct to routine MR imaging, because it enables assessment of the hemodynamics of meningiomas and facilitates its differential diagnosis from other tumors.
Insights
Magnetic Resonance (MR) digital subtraction angiography (DSA) effectively visualizes intracranial meningiomas, aiding in their diagnosis. This technique enhances differential diagnosis by assessing tumor hemodynamics.
Area of Science:
- Neuroradiology
- Vascular Imaging
- Neuro-oncology
Background:
- Magnetic Resonance (MR) digital subtraction angiography (DSA) is a non-invasive imaging technique.
- It combines rapid imaging sequences with gadolinium contrast for vascular visualization.
Purpose of the Study:
- To evaluate the diagnostic contribution of MR digital subtraction angiography (DSA) in identifying intracranial meningiomas.
- To assess the utility of MR DSA in differentiating meningiomas from other intracranial tumors.
Main Methods:
- MR DSA was performed on 18 patients diagnosed with meningioma.
- MR DSA was also conducted on 28 patients with other types of tumors for comparison.
- Analysis focused on the visualization of tumor stain and tumor-associated vasculature.
Main Results:
- Intracranial meningiomas were consistently visualized as intense, homogeneous tumor stains.
- Feeding arteries and draining veins associated with meningiomas were identified in a subset of patients.
- Tumor stains were observed in a majority of patients with other intracranial tumors, but with varying characteristics.
Conclusions:
- MR DSA serves as a valuable adjunct to conventional MR imaging for intracranial meningiomas.
- The technique aids in assessing meningioma hemodynamics, improving differential diagnosis.
- MR DSA enhances the ability to distinguish meningiomas from other neoplastic lesions.
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