CAJ | 학술논문

目的：通过常规CT和低剂量CT的对比研究，探讨低剂量CT在肺癌术后短期复查中的应用价值。方法：83例肺癌术后短期内复查CT的患者，50例（A组）行常规CT扫描，33例（B组）行低剂量CT扫描。分别从图像质量和临床需求角度出发对所有CT图像进行评分，并记录每个病例的辐射剂量指标CTDIvol、DLP。比较二组之间的评分和辐射剂量是否存在显著性差异。结果：二组在图像质量方面的平均得分分别为3.705±0.314、3.311±0.442，在临床需求方面的平均得分为2.670±0.373、2.561±0.410， CTDIvol分别为（19.248±1.532）mGy、（10.138±1.113）mGy，DLP分别为（170.180±19.259）mGy*cm、（99.061±14.504）mGy*cm。二组在图像质量、CTDIvol、DLP方面均存在显著性差异，在临床需求评分方面无显著性差异。结论：低剂量CT完全能满足临床对于肺癌术后短期复查的需求，并明显降低了辐射剂量。
목적：통과상규CT화저제량CT적대비연구，탐토저제량CT재폐암술후단기복사중적응용개치。방법：83례폐암술후단기내복사CT적환자，50례（A조）행상규CT소묘，33례（B조）행저제량CT소묘。분별종도상질량화림상수구각도출발대소유CT도상진행평분，병기록매개병례적복사제량지표CTDIvol、DLP。비교이조지간적평분화복사제량시부존재현저성차이。결과：이조재도상질량방면적평균득분분별위3.705±0.314、3.311±0.442，재림상수구방면적평균득분위2.670±0.373、2.561±0.410， CTDIvol분별위（19.248±1.532）mGy、（10.138±1.113）mGy，DLP분별위（170.180±19.259）mGy*cm、（99.061±14.504）mGy*cm。이조재도상질량、CTDIvol、DLP방면균존재현저성차이，재림상수구평분방면무현저성차이。결론：저제량CT완전능만족림상대우폐암술후단기복사적수구，병명현강저료복사제량。
To explore the application value of low-dose CT in lung cancer after operation in a short-term review by comparing conventional and low-dose CT. Methods:In 83 cases of lung cancer during the immediate postoperative period review, 50 cases (group A) underwent conventional CT scanning, whereas 33 cases (group B) underwent low-dose CT scanning. All CT scans were scored on the basis of image quality and clinical needs. The radiation dose indexes CTDIvol and DLP were recorded for each case. A comparison of the score and radiation dose between the two groups helped determine the existence of significant differences. Results:The average image quality scores of the two groups were 3.705±0.314 and 3.311±0.442, those for clinical demand were 2.670±0.373 and 2.561±0.410, those for CTDIvol were (19.248±1.532) mGy and (10.138±1.113) mGy, and those for DLP were (170.180±19.259) mGy*cm and (99.061±14.504) mGy*cm. The two groups exhibited significant differences in image quality, CTDIvol, and DLP but revealed no significant dissimilarity in clinical demand. Conclusion:Low-dose CT completely meets the clinical requirements for short-term follow-up after resection of lung cancer and significant reduction in radiation dose.