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.
探讨在心腔内超声（ICE）导引下对局灶性心房颤动（简称房颤）行射频消融治疗的可行性和安全性。
This study tested the feasibility and safety of radiofrequency (RF) catheter ablation in eliminating focal atrial fibrillation (AF) under the guidance of intracardiac echocardiography (ICE).
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