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目的 探讨头颈64层螺旋CT血管减影成像(64-SCTSA)的检查技术,评价其临床应用价值.资料与方法 回顾性分析84例头颈部血管64-SCTSA的影像资料,讨论其技术特点、图像质量及临床应用范围,诊断结果与手术或DSA比较.结果本组检查及成像参数合理、有效,患者检查全部成功.图像质量满足诊断要求,分别达很好51例(60.7%),好29例(34.5%),一般4例(4.8%).84例中发现阳性病变79例,其中颅内血管病变58例,颈部血管病变21例.64-SCTSA诊断结果与手术或DSA检查比较,结果基本一致.结论 64-SCTSA技术能减少骨结构等对血管的阻挡,有利于显示头颈部血管病变,提高影像诊断准确率.“,”Objective To discuss the technique and clinical application of 64-slice spiral CT subtraction angiogmphy (64-SCTSA) in head-neck lesions.Materials and Methods 84 patients with suspicious vessels diseases were exam-ined with 64-SCTSA.The imaging findings were retrospectively analyzed contrasted with surgery or DSA.Results In our study ,84 cases were all examined successfully with the reasonable and effective parameters.The image quality could meet the diagnostic demand.The quality reached excellent in 51 cases(60.7% ) ,good in 29 (34.5%) and passable in 4 cases (4.8%).In the 84 cases,79 cases were detected blood vessels abnormality,among them,58 located in brain and 21 in cervix.Diagnoses of 64-SCTSA were in accordance with that of surgery or DSA.Conclusion 64-SCTSA offers a potential advantage of vasculature lesions visibility without overlap of bone or other tissues,and improves the accuracy of imaging di-agnosis.