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Multi-detector row computed tomography angiography in diagnosing spinal dural arteriovenous fistula: initial
Ping-Hong Lai1, Huay-Ben Pan, Chien-Fang Yang
1Department of Radiology, Veterans General Hospital-Kaohsiung, National Yang-Ming University, Taiwan, ROC. phlai@isca.vghks.gov.tw
Background And Purpose:
Multi-detector computed tomographic (MDCT) angiography is a recently developed imaging technique that can study small vessels such as medullary arteries and veins. The purpose of this study was to evaluate MDCT angiography in diagnosing SDAVF.
Methods:
Eight patients with initial magnetic resonance imaging (MRI) and clinical findings suggestive of spinal dural arteriovenous fistula (SDAVF) and 8 control subjects underwent MDCT angiography. Both MDCT angiography and catheter angiography were performed within 5 days in patients with SDAVFs. The results of MDCT angiography in patients with SDAVFs were compared with those of catheter angiography.
Results:
MDCT angiography detected engorged perimedullary draining veins and correctly localized the fistula of the SDAVFs, and correlated well with catheter angiography. Fistula was at the thoracic level in 7 patients, and sacral level in 1 patient. MDCT angiography did not visualize the engorged perimedullary venous plexus in the control group.
Conclusions:
MDCT angiography correlated well with catheter angiography in diagnosing SDAVFs. It might play a role in shortening the length of the catheter angiography in diagnosing this disease.
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