Clinical Value of the 16 Row Spiral CT Enhanced Scanning and CT Angiography in Diagnosing Superior Mesenteric Artery Compression Syndrome

Objective To discuss the clinical value of 16 row spiral CT enhanced scanning and CT angiography in diagnosing superior mesenteric artery compression syndrome. Methods The data of 16 row spiral CT enhanced scanning and CT angiography of 26 patients with superior mesenteric artery compression syndrome were retrospectively analyzed. The 16 row spiral CT enhanced scanning was adopted for three phase contrast-enhanced abdominal scanning. Multi-planar reconstruction( MPR) and maximum intensity projection( MIP) were both employed to reconstruct the image of superior mesenteric artery. The diagnostic value of 16 row spiral CT enhanced scanning in diagnosing superior mesenteric artery( SMA) compression syndrome was analyzed. Results The anatomic relationship of superior mesenteric artery,( SMA and aorta abdominalis( AA) were clearly manifested in the 26 patients. Conclusion There 22( 85%) patients were of straight SMA type; 21( 81%) patients exhibited a 6-25° angle between the SMA and AA and 20( 77%) patients had a 3. 5-5. 0 mm space between SMA and AA; duodenal stasis signs were exhibited in the patients. There were 4 patients of turning type,accounting for 16%. Conclusion With 16 row spiral CT enhanced scanning and CT angiography,the run of SMA and relationship with surrounding tissues could be clearly observed,which merit important diagnostic value to superior mesenteric artery compression syndrome.