Diagnostic Value and Risk Assessment of Low-dose CT Scanning Technology in Lung Cancer Screening
Purpose: To evaluate the diagnostic value and risk of low-dose CT scanning technology in lung cancer screening. Methods: Lung cancer patients who underwent CT examinations in private secondary hospitals from 2024.1 to 2025.12 were included. The total sample size was 40 cases. According to different scanning plans, the patients were divided into a low-dose group and a conventional-dose group, 20 cases each. The differences in radiation dose and image quality scores between the two groups were evaluated. Results: A total of 35 pulmonary nodules were detected in the low-dose CT group and 39 in the conventional-dose CT group. The difference in detection type and size distribution of nodules between the two groups was small, P > 0.05. The CT dose index, dose length product, and effective dose of the low-dose group were lower than those of the conventional dose group, P < 0.05. There were small differences in the subjective scores of image quality and noise, signal-to-noise ratio, and contrast-to-noise ratio between the two groups, P > 0.05. Conclusion: In the diagnosis and screening of lung cancer patients, low-dose CT scanning technology can reduce radiation dose while ensuring detection and image quality, and has the potential to replace conventional dose.
[1] Xu DQ, 2025, Comparison of the Application of Low-Dose and Conventional-Dose CT in the Identification and Invasive Diagnosis of Pulmonary Ground-Glass Nodules. Modern Medical Imaging, 34(11): 2016–2018 + 2024.
[2] Shen MH, Guo QQ, Wu XQ, et al., 2025, Analysis of the Diagnostic Value of Low-Dose Chest CT Examination for Early Lung Cancer. Chinese Medical Guidelines, 23(33): 77–79.
[3] Zhang B, 2025, Comparison of the Effectiveness of Low-Dose and Conventional-Dose CT Scans in the Diagnosis of Early Lung Cancer. Chinese Minkang Medicine, 37(21): 129–131.
[4] Cao WX, Chen MX, 2025, Research on the Balance of Radiation Dose and Image Quality in CT Low-Dose Scanning Parameter Optimization in Lung Cancer Screening. Imaging Research and Medical Applications, 9(18): 84–86.
[5] Tian J, Yang SH, Meng LL, 2025, The Value of Combined Ultra-High-Resolution CT and Low-Dose CT in Diagnosing Benign and Malignant Pulmonary Ground-Glass Nodules. Chinese and Foreign Medical Research, 4(18): 154–156.
[6] Liu XQ, Zeng Y, Guo RR, et al., 2025, Experience in the Application of Low-Dose Radiotherapy Combined with Immunotherapy in the Late-Line Treatment of Extensive-Stage Small Cell Lung Cancer. Life Science Instruments, 23(3): 13–16.
[7] Wu WJ, Zuo YY, Zhang H, et al., 2025, Comparison of the Application Effects and Incidence of Adverse Reactions Between Low-Dose and High-Dose Radiotherapy in the Treatment of Patients With Advanced Lung Cancer. Contemporary Medical Review, 23(15): 23–26.
[8] Wang Y, Li W, 2025, Application Value of Different Doses of CT in the Diagnosis of Pulmonary Ground-Glass Nodules. Imaging Research and Medical Applications, 9(9): 74–76 + 80.
