肺部局灶性GGO及GGN超高分辨率CT扫描技术探讨  

Investigation of ultra-high resolution CT scanning technique in lung focal GGO and GGN

作　　者：黄涛[1] 王凤君 孙振环 王德广[1] 张波绪[1] 崔尧林 HUANG Tao;WANG Fengjun;SUN Zhenhuan;WANG Deguang;ZHANG Boxu;CUI Yaolin(Department Of Diagnosing Images,The 970th Hospital of PLA,Weihai 264200,P.R.China)

机构地区：[1]中国人民解放军第970医院影像科,山东威海264200

出　　处：《医学影像学杂志》2018年第12期2044-2047,共4页Journal of Medical Imaging

摘　　要：目的探讨肺部GGO及GGN超高分辨率CT扫描技术,提高对其细节的显示。方法采用Philips i CT 256机型经低剂量肺部查体筛查检出的56例GGO及GGN患者(男23例,女33例,年龄30～75岁,平均62岁)进行超高分辨CT扫描研究,病灶最大径4～31mm,均结合生理通气辅助,28例对病灶范围进行常规超高分辨率靶扫描,余28例对病灶范围进行优化超高分辨率靶扫描,再经2位高年资诊断医师共同评价所得图像的细节及清晰度显示,并进行统计学分析。结果常规超高分辨率靶扫描较常规扫描在空间分辨率方面稍有提高,细节显示较常规扫描无明显改善,部分甚至有负面影响,而经优化的超高分辨率扫描在肺局灶性GGO及GGN细节显示上均有较明显提高。结论经优化的超高分辨率CT扫描对局灶性GGO及GGN细节的显示较常规超高分辨率扫描明显提高,进而提高局灶性GGO及GGN的诊断准确率。Objective To investigate ultra-high resolution CT scanning technique of GGO and GGN to improve the display of its details. Methods 56 cases of GGO and GGN (23 males and 33 females, aged 30~75 years, average 62 years old) were detected by low-dose lung examination with Philips iCT256 model to conduct ultra-high resolution CT scan study.The maximum diameter of lesions 4~ 31 mm assisted by physiological ventilation support. 28 cases of the lesions were conducted the conventional high-resolution target scan, the remaining 28 cases of the lesions were conducted the optimized ultra-high resolution target scan. Afterward two high-risk diagnostic physicians jointly evaluated the details of the resulting images, sharpness display and statistical analysis. Results Compared with the conventional scan, the ultra-high resolution target scan slightly improved in spatial resolution and the detail showed no significant improvement. Some of them even had a negative effect. However the optimized ultra-high resolution scan performed in lung focal GGO and GGN details showed a more significant increase. Conclusion The optimized ultra-high resolution CT scans show a significant increase in the details of focal GGO and GGN compared with conventional ultra-high resolution scanning, and then improve the diagnostic accuracy of focal GGO and GGN.

关 键 词：体层摄影术 X线计算机 超高分辨率 

分 类 号：R814.42[医药卫生—影像医学与核医学] R734.2[医药卫生—放射医学]