To analyze the diagnostic value of multi-slice spiral CT angiography (MSCTA) in the origin of abdominal tumor feeding artery.

From February 2014 to February 2017 in the Central Hospital of Enshi Autonomous Prefecture, one hundred and fifty patients were diagnosed of tumor after abdominal CT scan or abdominal ultrasonography, using 16 multi-slice spiral CT volume scanning to establish vascular image. Two diagnostic groups were established, with the experimental group diagnosis materials including MSCTA data and CT section the image, and the control group only CT diagnostic data section image. Results of two groups of diagnosis and postoperative pathological results were recorded and compared for the accuracy rate of diagnosis.

There were 113 cases (75.33%) of the blood supply arteries of the tumor displayed by the method of VR or MIP reconstruction. The MIP images showed clear blood vessels and high contrast, especially for the third, fourth small vessels of the abdominal aorta. The display rate of the 3 branch of the aorta was 61.33% (92/150), and 10% (15/150) for 4 grade branch. The VR image had a strong sense of stereo, and the overlapped blood vessels were more suitable and can rotate at any time. The display rate of the 3 branches of the abdominal aorta was 60.67% (91/150), and 6% (9/150) for the 4 grade branch.In the experimental group, the diagnosis accuracy rate before operation (tumor origin) was 92.67% (139/150), for the qualitative diagnosis (benign or malignant) was 93.33% (140/150); in the control group, the diagnosis accuracy rate was 72.00% (108/150), the qualitative accuracy rate was 90.00% (135/150), the difference of accurate diagnosis rate was statistically significant (χ²=22.023, P<0.01), the qualitative diagnostic accuracy showed no significant difference (χ²=1.090, P=0.296).

MSCTA can show the supply artery of abdominal tumor well, and it is of high clinical value in the preoperative diagnosis, especially for the localization diagnosis of MSCTA.