The superiority of 256-slice spiral computed tomography angiography for preoperative evaluation of surrounding arteries in patients with gastric cancer
Authors Wu D, Zhao L, Liu Y, Wang J, Hu W, Feng X, Lv Z, Li Y, Yao X
Received 10 May 2015
Accepted for publication 30 June 2016
Published 16 February 2017 Volume 2017:10 Pages 927—933
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Dekuang Zhao
Peer reviewer comments 3
Editor who approved publication: Dr Jianmin Xu
Deqing Wu, Linyong Zhao, Ying Liu, Junjiang Wang, Weixian Hu, Xingyu Feng, Zejian Lv, Yong Li, Xueqing Yao
Department of General Surgery, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, People’s Republic of China
Objective: To evaluate the utilization of 256-slice spiral computed tomography (CT) angiography in preoperative assessment of perigastric vascular anatomy in patients with gastric cancer.
Methods: In this study, 80 gastric cancer patients were included. The medical procedure of 256-slice spiral CT angiography was performed on each of these patients consecutively. Thereafter, these patients were subjected to surgical treatment in our hospital. The techniques of volume rendering (VR) and maximum intensity projection (MIP) were used to image reconstruction of arteries around the stomach.
Results: Both VR and MIP were applied to reconstruct the images of perigastric arteries. The results indicated that VR imaging was inferior to MIP in determining the variant small artery anatomy around the greater curvature and fundus. The respective rates of imaging produced by VR and MIP for left gastroepiploic artery, short gastric artery, and posterior gastric artery, were 32.50% versus 100%, 16.25% versus 87.50%, and 3.75% versus 25.00%, respectively. According to Hiatt’s classification, 75 out of 240 cases were abnormal types, among which we found Type II in 30 cases, Type III in 33 cases, Type IV in three cases, Type V in six cases, and Type VI in only three cases. There was no significant difference for total and every single variation type, between our group and Hiatt’s group (P>0.05).
Conclusion: The 256-slice spiral CT angiography can be regarded as an effective and accurate diagnostic modality for preoperative assessing anatomical arterial variations in gastric cancer; MIP was superior to VR at identifying variations of some small artery, whereas VR was better than MIP at showing anatomical arterial variations due to its three-dimensional effect.
Keywords: gastric cancer, artery, angiography, tomography, spiral computed
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