| Theme |
Frontier of image diagnosis for colorectal carcinoma |
| Title |
Diagnosis of colorectal cancer with three dimensional endoscopic ultrasonography (3D-EUS) |
| Author |
Kiyonori Kobayashi |
Department of Gastroenterology, Kitasato University East Hospital |
| Author |
Miyuki Mukae |
Department of Gastroenterology, Kitasato University East Hospital |
| Author |
Hitomi Takeuchi |
Department of Gastroenterology, Kitasato University East Hospital |
| Author |
Satomi Haruki |
Department of Gastroenterology, Kitasato University East Hospital |
| Author |
Kaoru Yokoyama |
Department of Gastroenterology, Kitasato University East Hospital |
| Author |
Miwa Sada |
Department of Gastroenterology, Kitasato University East Hospital |
| Author |
Mitsuhiro Kida |
Department of Gastroenterology, Kitasato University East Hospital |
| Author |
Katsunori Saigenji |
Department of Gastroenterology, Kitasato University East Hospital |
| [ Summary ] |
We explain the clinical usefulness of three dimensional endoscopic ulrasonography (3D-EUS) for the diagnosis of colorectal cancer. By using 3D-EUS, radial and linear images of the tumor can be displayed. After the completion of EUS examinations, 3D images (oblique projection and surface rendering images) can be reconstructed by computerized image processing. These features facilitate an understanding of the 3D structure of tumors. The ability of 3D-EUS to visualize linear images as well as radial images has improved diagnostic accuracy for many lesions. In comparison with the 3D-EUS images of the esophagus or stomach, scanning of the colon and rectum is usually unaffected by heart pulsation, and clear linear images can, therefore, be obtained. Moreover, 3D-EUS is useful to decrease the number of lesions that are difficult to image with conventional EUS. In conclusion, three dimensional endoscopic ulrasonography is expected to enhance the diagnostic accuracy of the depth of colorectal cancer invasion and help to eliminate the problem of difficult to image lesions. |