Abstract

Objective To evaluate the clinical value of color Doppler ultrasonography in diagnosing spontaneous isolated superior mesenteric artery dissection (SISMAD) . Methods The ultrasonographic images of 19 patients with SISMAD confirmed by CT angiography were retrospective analyzed and the ultrasonographic features were summarized. Results The ultrasonographic images of SISMAD showed that the lumens of superior mesenteric arteries were wider, the intimal flaps were found in superior mesenteric artery, the false lumens were filled with thrombus in some patients, the true lumens were compressed and significantly smaller, and the blood flow velocity would exceed 275 cm/s. Nineteen cases of SISMAD were divided into three types: type Ⅰ 5 cases, type Ⅱa 4 cases, type Ⅱb 9 cases and type Ⅲ 1 case. Eighteen of them were clearly diagnosed and classified by color Doppler ultrasonography. Conclusions Color Doppler ultrasonography could be an effective imaging method for the diagnosis and follow-up of SISMAD. Key words: Color Doppler ultrasonography; Superior mesenteric artery; Dissection

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