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Imaging of Various Gastric Lesions with 2D MPR and CT Gastrography Performed with Multidetector CT¹

¹ From the Department of Radiology (J.H.K., D.E.G.) and Digestive Disease Center (C.S.S.), Soonchunhyang University Hospital, 657 Hannam-Dong, Youngsan-Ku, Seoul 140-743, Korea; the Department of Diagnostic Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea (H.W.E.); and the Department of Radiology, Cornell University Weill Medical College, New York, NY (Y.H.A.). Presented as an education exhibit at the 2004 RSNA Annual Meeting. Received April 8, 2005; revision requested June 23; final revision received October 6; accepted October 7. All authors have no financial relationships to disclose. Address correspondence to J.H.K. (e-mail: junghkim{at}hosp.sch.ac.kr).

Recent advances in computed tomographic (CT) technology, three-dimensional imaging software, and cheaper data storage capacity have made faster, simpler, and more accurate gastric imaging available. Two-dimensional multiplanar reformation and CT gastrography including virtual gastroscopy and transparency rendering allow multiplanar cross-sectional imaging, gastroscopic viewing, and upper gastrointestinal series imaging in the same data acquisition. Multi–detector row CT allows noninvasive assessment of the gastric wall and the perigastric extent of disease. It is also helpful in detection and evaluation of gastric malignancies and a variety of inflammatory conditions that affect the stomach. Conventional gastroscopy provides the most useful information about the exact location of the lesion and also allows performance of biopsy. Endoscopic ultrasonography (US) provides the most useful information about horizontal extension of the tumor, the depth of mural invasion, and perigastric lymphadenopathy. However, endoscopic US has not been able to replace CT for tumor staging because of its limitations in demonstrating distant lymphadenopathy or metastatic deposits.

© RSNA, 2006

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