目的：分析胃肠双对比造影(DCG I)和CT对十二指肠间质瘤的诊断价值。

Purpose: To analyse of the diagnostic value of double contrast gastrointestinal imaging (DCGI) and CT for duodenal stromal tumors.

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分析恶性胃肠道间质瘤(GIST)的CT特点。

To explore the CT features of malignant gastrointestinal stromal tumor (GIST).

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目的分析胃肠道间质瘤（GIST）的影像学表现，以提高对GIST的诊断水平。

Objective To improve the ability of imaging diagnosis of gastrointestinal stromal tumours(GIST)through analyzing imaging findings of GIST.

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