Several role of the X ray examination of gastrointestinal tract was shown. In the differential diagnosis of left upper quadrant mass, vector principle is utilized, and spheroid sign is useful in the differentiating intramural from extramural lesions. In the X ray diagnosis of cancer invasion to the wall, analysis of profile view is utilized. The deformity of the lesions is classified as none, wedge shape, semilunal, and trapezoid. These deformities are closely connected with the depth of cancer invasion. Several secondary colonic changes were shown. These are occasionally missed or misdiagnosed. Although barium is the usual contrast material, gastrografin must be used in suspected perforation of gastrointestinal tract. In intussusception, barium enema is used for diagnosis and treatment.
5) 消化管造影(シンポジウム 腹痛の画像診断, 第423回新潟医学会)
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