16排螺旋CT肺动脉血管造影的临床应用

Evaluation of Clinical Application of 16-Slice Spiral CT Pulmonary Angiography

目的 初步评价16排螺旋CT肺动脉血管造影的临床应用价值。方法 使用GE公司LightspeedTM 16CT机，对46名有肺部疾病的患者行肺动脉血管造影成像，扫描速度0．5s／360°，扫描层厚0．625mm，螺距1．375：1，重建间距1．25mm，造影剂注射速度3．5～4ml／s。肺动脉正常25例，中央型肺癌侵犯肺动脉干或肺动脉16例，肺动脉栓塞4例，大动脉炎伴发肺动脉狭窄1例。8例经病理证实。结果 经16排螺旋CT肺动脉血管造影，肺动脉正常的25例均可清晰显示肺动脉干，左、右肺动脉，以及段和亚段级肺动脉。明确显示癌肿与肺动脉的关系16例，肺动脉变形、移位及狭窄17例，肺动脉栓塞4例。结论 16排螺旋CT肺动脉血管造影对肺动脉相关疾病的临床应用有重要价值，在一定程度上可取代血管造影及ECT。

Objective To evaluate the value of clinical application of 16-slice spiral CT pulmonary angiography （16-sSCTPA）. Methods Forty-six patients with lung diseases underwent spiral CT pulmonary angiography using GE LightspeedTM 16 CT scanner with 0.5 s/360° velocity, 0. 625 mm slice thickness pitch 1. 375, 1.25 mm reconstruction interval. The contrast material injection rate was 3.5-4 ml/s. The control group included 25 normal subjects. Other patients included 16 central pulmonary carcinoma with signs of central pulmonary artery or pulmonary arteries infiltration, 4 pulmonary embolism, 1 Takayasu＇ s arteritis with pulmonary arterial stenoses. Eight cases were proved by pathology. Restilts 16-sSCTPA showed central pulmonary artery, right or left pulmonary artery, segmental and subsegmental pulmonary arteries clearly of all 25 cases of the normal pulmonary artery. 16-sSCTPA demonstrated the relationship between pulmonary arteries and masses in 16 cases, malformation, displacement and narrowing of pulmonary arteries in 17 cases, as well as pulmonary embolism in 4 cases. Conclusion 16-sSCTPA has an important value in assessing diseases of pulmonary arteries. It can be partly in place of the conventional angiography and emission CT.