Jin Hee Jang MD, Presenter: Nothing to Disclose

Seung Eun Jung MD, Abstract Co-Author: Nothing to Disclose

Soon Nam Oh, Abstract Co-Author: Nothing to Disclose

Young Joon Lee MD, Abstract Co-Author: Nothing to Disclose

Jae Mun Lee MD, Abstract Co-Author: Nothing to Disclose

Kyung Sin Park MD, Abstract Co-Author: Nothing to Disclose

To evaluate the value of the findings of the engorged vessels around the early gastric cancer, as an indicator of tumor detection with the 2D multiplanar reformatting images and 3D volume rendering images of Multi-detector row CT.

Thirty five patients (23 males, 12 females; mean age 57 years, 24 to 76) with surgically proven early gastric cancer underwent contrast material-enhanced multi-detector row CT gastrography, with effervescent granules used as oral contrast material. Two experienced radiologists evaluated the images in consensus in the following order. First, 2D multiplanar reformatting images were evaluated for detection of gastric cancer by wall thickening and mucosal enhancement. Then, 3D volume rendering images were evaluated to find gastric cancer by surface contour abnormality. And then, we made navigation view at the site of the subjective engorgement of vessel in the perigastric area on 2D image. The difference of the detectability of cancer among 2D image, 3D volume rendering and navigator view were evaluated. The detectability of cancer was also analyzed by size, location and morphologic type on 2D and 3D images. The accuracy of staging was assessed.

The detectability of early gastric cancer with 2D image and 3D volume rendering was only 31.4% and 54.3%, respectively. With 3D navigation view, the detectability was 88.6%. And the engorged vessel was found around the lesion in 85.7%. The lesions located in the lesser curvature side of antrum were not detected in 2D image (none of eight), but they were seen in 3D navigation view excellently (all of eight), and all of the lesions showed the engorged vessels around the lesions. There was no significant difference in detectability according to the size and morphologic type of lesions. The overall staging accuracy was 82.9%.

Multi-detector row CT with 3D volume rendering reconstruction with navigation view can improve the detection of early gastric cancer, and the findings of the engorged vessel around the lesion is very supportive for detection of tumor in 2D MPR images.

The findings of the engorged vessel around the malignant tumor can make increase the detectability of early gastric cancer on CT scan.

Jang, J, Jung, S, Oh, S, Lee, Y, Lee, J, Park, K, Early Gastric Cancer at Multidetector Row CT: The Engorged Vessels around the Malignant Tissue, the Supportive Finding.  Radiological Society of North America 2006 Scientific Assembly and Annual Meeting, November 26 - December 1, 2006 ,Chicago IL. http://archive.rsna.org/2006/4436748.html