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目的：探讨胃十二指肠溃疡穿孔的CT表现及其诊断价值。材料与方法：回顾性分析5例经手术病理证实的胃十二指肠溃疡穿孔者的CT表现。结果：本组5例中，急、亚急性穿孔4例，慢性穿孔1例。穿孔部位包括：胃窦小弯侧1例，胃体大弯侧1例，十二指肠球部上壁及前壁各1例，十二指肠球后部后壁1例。溃疡穿孔的CT表现；定性征象有腹腔内游离气体；定位片像有局部管壁增厚，不规则，周围脂肪层模糊；同时能全面地显示穿孔后腹腔内的继发改变。本组5例中有3例未能确定穿孔部位。结论：CT对诊断胃十二指肠溃疡穿孔很有价值，优于其它影像学检查，但对部分急性穿孔的定应诊断、慢性穿孔的定性诊断有一定限度。
Objective: To investigate the CT findings of perforated gastroduodenal ulcer and its diagnostic value. Materials and Methods: CT findings of 5 patients with perforation of gastroduodenal ulcer confirmed by surgery and pathology were retrospectively analyzed. Results: The group of 5 cases, acute and subacute perforation in 4 cases, 1 case of chronic perforation. Perforation sites include: 1 case of lesser curvature of the antrum, 1 case of greater curvature of the corpus, 1 case of upper and anterior wall of the duodenal bulb, and 1 case of posterior wall of the rear of the duodenal bulb. Perforation of the ulcer CT manifestations; qualitative signs of intra-abdominal free gas; positioning piece like local wall thickening, irregular, fuzzy around the fat layer; at the same time can fully display the perforation after perforation of the secondary changes. In this group of 5 cases, 3 cases failed to determine the site of perforation. Conclusion: CT is valuable in the diagnosis of perforation of gastroduodenal ulcer, which is superior to other imaging tests. However, there are some limitations on the diagnosis of chronic perforation and the qualitative diagnosis of chronic perforation.