螺旋CT肺血管成像的临床应用评价

目的 初步评价螺旋CT肺血管成像（SCTPA）的临床应用价值。方法 用西门子公司的Somatom Plus 4CT机，对82例患者进行肺血管成像，扫描层厚3mm，螺距1.5，重建间距1.2mm，对比剂注射速度3－4ml/s。其中正常30例，中央型肺癌累及中央肺动脉40例，肺动脉发育不良5例，肺动静脉畸形4例，肺动脉袖状切除成形术后3例。32例经手术病理或DSA证实。结果 正常组30例SCTPA均能很好地显示并区分中央区肺动青静脉，显示外周肺血管的分布情况。直观显示各种原因所致肺动静脉的狭窄、位移或畸形46例，显示肿块和血管的关系28例。结论 SCTPA有重要的临床应用价值，可部分代替血管造影。

Evaluation of clinical application of spiral CT pulmonary angiography

Objective To assess the value of clinical application of spiral CT pulmonary angiography(SCTPA). Methods 82 patients underwent spiral CT pulmonary angiography using Simens Somatom Plus 4 CT scanner with 3 mm slice thickness pitch 1.5, 1.2 mm reconstruction interval and 3-4 ml/s contrast medium injection rate.The study included 30 normal subjects, 40 central pulmonary carcinoma with signs of central pulmonary artery(CPA) infiltration, 5 pulmonary artery aplasia, 4 pulmonary arteriovenous malformation, 3 after pulmonary artery sleeve resection plasty. 32 cases were proved by surgery pathology or DSA. Results SCTPA could clearly show central and peripheral pulmonary vessels and differentiate central pulmonary artery and vein in all 30 cases of normal group. SCTPA demonstrated narrowing, displacement and malformation of pulmonary vessels in 46 cases, as well as the relationship between pulmonary vessel and mass in 28 cases. Conclusion SCTPA is useful in evaluating diseases of pulmonary vessels, it can partly replace DSA.