Abstract：Objective To analyze the screening value of low-dose CT for early or asymptomatic subclinical lung cancer, so as to
realize the early diagnosis of the disease. Methods A total of 300 patients with high-risk lung cancer were randomly selected from
April 2016 to September 2016 in our hospital who participated in “urban cancer early diagnosis and treatment project”, and were
grouped into A group, who underwent low-dose CT scan. Another 300 subjects in the same period in out-patient pulmonary CT in our
hospital were included as B group who underwent conventional CT scan. The parameters of CT scan and the corresponding effective
radiation dose were analyzed statistically. Results The images of group A and B were all up to the standard of diagnosis. There
was no difference in image quality between mediastinal window and lung window by using different scanning techniques. The CT
dose index volume (CTDIvol), dose-length product (DLP), the total scan time and effective dose (ED) in group A were significantly
lower than that of group B, the ED value in group A occupied 22.8% in group B, the difference was statistically significant (P<0.01).
Conclusion Low-dose CT can reduce the radiation dose of patients, and shorten the total scan time of low-dose CT scan, which is
helpful to prolong the life of CT tube and reduce the cost. Therefore, it is of great value in early screening of high-risk lung cancer.
张璋a，范强b，姚永熠b. 低剂量CT扫描技术在早期肺癌筛查中的应用与临床价值[J]. 中国医疗设备, 2018, 33(2): 77-80.
ZHANG Zhanga, FAN Qiangb, YAO Yongyib. Application and Clinical Value of Low-Dose CT Scanning in Early Lung Cancer Screening. China Medical Devices, 2018, 33(2): 77-80.
