Three-dimensional Demonstration and Interactive Two-dimensional Assessment of Early Gastric Cancer with MDCT Gastrography Nobuyuki Shiraga 1 1Department of Radiology, Tachikawa Hospital Keyword: , 早期胃癌 , 深達度 , CT(MDCT) , 三次元 pp.1421-1428
Published Date 2002/10/25
DOI https://doi.org/10.11477/mf.1403104569
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 In the era of single detector-row CT (SDCT), it was difficult to assess the degree of tumor invasion to the gastric wall by CT, especially in early gastric cancer. It was chiefly because three-dimensional images recon-structed with SDCT datasets were not clear enough to depict and assess superficial depression and the character of converging folds. Now CT gastrography (CTG) using datasets acquired with multidetector-row CT (MDCT) can detect and assess early gastric cancer three-dimensionally with its higher spatial and temporal resolution than those with SDCT. Further more with its characteristics of wide observation range, non-restricted observation point of view, objectiveness, detectability of elevation and depression, it might detect and assess early gastric cancer better than conventional examinations. The other point of CTG is that it is the only method to be able to assess the gastric wall two dimensionally. Finally, we can assume pathology of early gastric cancer in combination with plain and dynamic enhancement study. As a conclusion, we wish to emphasis this promising examination has a potential to be one of the standards in diagnosing gastric lesions, although some problems remain to solve such as radiation exposure, cost benefitness, and education for reading.

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