Objective: To study the diagnosis assessment by Ultrasonic endoscope (EUS) in malignant gastric uncler suspected by routine endoscopy.
目的：探讨超声内镜（EU S）对常规内镜检查怀疑为恶性胃溃疡的诊断价值。
The merit and demerit of virtual endoscopy are pointed out through compared with traditional endoscope, and the perspective of clinical application of virtual endoscopy is expected.
通过与传统内窥镜进行比较，指出仿真内镜的优点和缺点，并展望仿真内镜的应用前景。
Objective to investigate diagnostic value of emergency endoscopy on cause and region of upper gastrointestinal massive bleeding, and to know the effect of emergency endoscope therapy.
目的探讨急诊内镜检查对上消化道大出血病因、部位的诊断价值，以及急诊内镜下止血的方法及效果。
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