16层螺旋CT测试扫描技术在肺动脉成像中的临床应用

Clinical Application of the 16-Slice Spiral CT Testing Scan Technique in Pulmonary Angiography

目的:探讨16层螺旋CT测试扫描技术在肺动脉成像中的应用,以期提高肺动脉造影(CTPA)的图像质量。方法:应用GE Light Speed 16层螺旋CT扫描仪进行测试扫描和传统扫描各50例CTPA,所有扫描重建图像传送至AW4.2工作站进行后处理重组,并分别由3名经验丰富的CT诊断医师采用双盲法,对2种方法的图像质量进行评价,分别统计优、良、可、差。结果:测试扫描:优90%、良6%、可4%、差0%;传统扫描:优62%、良12%、可22%、差4%。结论:应用测试扫描技术进行16层螺旋CT肺动脉成像所得诊断图像质量明显优于传统扫描,有助于放射诊断及治疗。

Objective： To explore the Application of the 16-slice spiral CT testing scan technique in pulmonary angiography in order to improve the quality of CTPA. Methods： 50 CTPA in testing scan group and conventional scan group respectively were examined with GE Light speed 16-slice spiral CT. The data of all patients were transmitted to the workstation （ADW4.2） and reconstruction. The quality of all images were evaluated by three experienced doctors using double-blind method in charge in four grades （A,B,C and bad）, and the mean peak time of main Artery of all grade A were also compared. Results： Testing scan： the rate of A,B,C and bad was 90%, 6%, 4% and 0% respectively, conventional scan： the rate of grade A,B,C and bad was 62%, 12%, 22% and 4% respectively. Conclusion： Testing scan technique is superior than conventional scan in image quality of 16-slice spiral CT pulmonary angiography. Testing scan technique is good for radiographic diagnosis and remedies.