Comparative study of CT enhancement and MR enhanced scan in the diagnosis of abdominal aorta and its branches

Abstract

Objective To investigate the display ability and diagnostic value of CT enhancement and MR enhanced scan in abdominal aorta and branch vessels. Methods Forty-seven patients with abdominal examination underwent routine CT enhancement scan after admission and MR Enhanced scan was completed within 1 week. CT and MR images of the patients were analyzed by two imaging doctors with more than 3 years working experience in hospital. The diameter of abdominal aorta and, bilateral renal artery, superior mesenteric artery and abdominal cavity were measured.The measured values of the two imaging methods were compared, and the Pearson correlation coefficient was used to analyze the numerical results of CT enhancement and MR enhanced scanning. Results ①The two imaging methods: there was no significant difference in the diameter of the abdominal aorta, the right renal artery, the left renal artery, the superior mesenteric artery or the celiac trunk measured by CT enhancement and MR enhanced scan imaging (P>0.05). ②Two imaging methods measuring numerical correlation: enhanced CT and enhanced MR scan before and after imaging measurement of abdominal aortic diameter, right renal artery, superior mesenteric artery and celiac was strongly related. The left renal artery had a moderate degree of correlation (P<0.05). Conclusions CT enhanced and MR enhanced scan can get accurate vascular measurement data in the diagnosis of abdominal aorta and its branch vessels, and MR enhanced scan is safe for the human body without ionizing radiation. Key words: Abdominal aorta; Branch vessel; CT enhanced scan; MR enhanced scan; Diagnostic value