Objective To evaluate the role of electron-beam CT (EBCT)in the diagnosis of patients with congenital coronary artery anomalies. Methods Twenty patients with angiocardiography and (or) operation outcomes, and diagnosed as congenital coronary artery anomalies by means of EBCT were analyzed retrospectively. 16 patients had angiocardiographic results. The 13 male and 7 female patients ranged in age from 5 months to 70 years (median age was 15.5 years). Continuous volume scan (CVS) was performed on 1 patient, enhanced single slice mode (SSM) were done on 19 patients (95%) including one adding both plain SSM and cine study, and the other adding cine study. Results EBCT suggested signs of congenital coronary artery anomalies and made correct diagnosis in 19 patients, including 5 patients with anomalous origin and course, 6 patients with single coronary artery and 8 patients with coronary artery fistula. The correct diagnostic rate of EBCT was 19/20, while that of angiocardiography was 15/16. In the Chi square test, χ2=0.32, P>0.05, so that there wasn′t significant difference between them. Conclusion Because of its remarkable advantage in demonstrating origin, course, and drainage sites of coronary artery anomalies, EBCT is an excellent noninvasive method in the diagnosis of coronary artery anomalies.

目的:探讨电子束CT(EBCT)在心脏良性非粘液瘤性肿瘤诊断中的价值.方法:对1995-07～1999-02,经EBCT检查并手术、病理证实的7例心脏良性非粘液瘤性肿瘤的EBCT、超声心动图结果与手术、病理所见进行回顾性分析.7个病例,男性4例(57.1%),女性3例(42.9%),年龄从5个月至42岁,平均21.6岁.所有病例同时行单层增强和电影序列.结果:7例心脏非粘液性良性肿瘤,包括2例浸润性脂肪瘤,2例纤维瘤,1例横纹肌瘤,1例淋巴管瘤,1例间皮瘤,EBCT不但能够明确肿瘤的位置、附着、大小、范围、运动,而且以优良的密度分辨率,在6个病例显示肿瘤病理学特征,提示正确的病理学定性诊断,准确性为85.7%;2个病例术后提示肺不张与胸腔积液.同组病例中,超声心动图无1例做出正确组织病理学定性.结论:EBCT具有优良的时间、空间和密度分辨率,在对超声心动图难以准确定性的良性非粘液瘤性肿瘤的诊断中具一定优势,同时可展示邻近病变情况.