目的探讨端扫式直肠超声对高位直肠癌患者进行术前腔内检查（TRUS）的方法与临床价值。
Objective To probe the methods and clinical value of transrectal ultrasound (TRUS) with head scanning probe in detecting upper rectal carcinoma.
目的探讨腔内彩色多普勒超声技术在直肠肿瘤诊断中的应用价值。
Purpose: To explore the value of transrectal color Doppler ultrasound in diagnosing rectal tumors.
目的探讨经直肠腔内超声对直肠肿瘤的诊断价值。
Objective To evaluate the diagnostic value of transrectal ultrasonography for rectal tumors.
目的探讨内置水囊法超声诊断直肠和乙状结肠小肿瘤的价值。
Results Small tumors in the two colons appeared as hypoechoic masses under the cyst.
目的探讨内置水囊法超声诊断直肠和乙状结肠小肿瘤的价值。
Results Small tumors in the two colons appeared as hypoechoic masses under the cyst.
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