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Japanese Journal of Radiology
Published in: Japanese Journal of Radiology 8/2019

01-08-2019 | Computed Tomography | Original Article

CT gastrography “wall-carving technique” of gastric cancer: impact of contrast enhancement based on layer depth

Authors: Daisuke Tsurumaru, Yusuke Nishimuta, Toshio Muraki, Yoshiki Asayama, Akihiro Nishie, Eiji Oki, Hiroshi Honda

Published in: Japanese Journal of Radiology | Issue 8/2019

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Abstract

Purpose

Wall-carving technique (WC) is a special volume rendering technique of three-dimensional CT gastrography that can illustrate the enhancement of gastric wall at an arbitrary depth. We conducted the present study to evaluate the impact of contrast enhancement based on layer depth on WC of gastric cancer and to correlate them with pathological findings.

Methods

The subjects of this retrospective study consisted of 36 patients with advanced gastric cancer (22 men, 14 women; age range, 39–90 years; median, 67 years) who underwent contrast-enhanced CT before surgery. WC images of arterial phase were divided into first and second layer. Two radiologists in consensus evaluated the contrast enhancement of WC images for each layer and correlated with pathologic factors.

Results

Twenty-six (72%) of the gastric cancers showed a well-enhanced lesion in the first layer at the arterial phase on WC images, and 18 (50%) showed a well-enhanced lesion in the second layer. The study of second layers showed that the well-enhanced group had significantly more cases of differentiated type histology and intermediate stroma than the normally to poorly enhanced group (p = 0.008 and 0.0026).

Conclusion

The contrast enhancement on WC of gastric cancer showed a significant relationship with pathological factors based on layer depth.
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Metadata
Title
CT gastrography “wall-carving technique” of gastric cancer: impact of contrast enhancement based on layer depth
Authors
Daisuke Tsurumaru
Yusuke Nishimuta
Toshio Muraki
Yoshiki Asayama
Akihiro Nishie
Eiji Oki
Hiroshi Honda
Publication date
01-08-2019
Publisher
Springer Japan
Published in
Japanese Journal of Radiology / Issue 8/2019
Print ISSN: 1867-1071
Electronic ISSN: 1867-108X
DOI
https://doi.org/10.1007/s11604-019-00845-z

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