Abstract
Objective To investigate the value of low-dose MDCT in the diagnosis of breast cancer using ROC analysis. Methods Retrospectively analyze the breast images of 105 cases that had performed both 64-row CT and pathological examinations. The case number that underwent CT examination with routinedose parameters was 48; and that with low-dose was 57. Two radiologists with clinical experiences more than 5 years evaluated the breast lesions, respectively. And ROC curve was used to test the diagnostic efficacy of breast cancer between the two groups. Results Compared with the routine-dose group, the quality of CT image was high enough to disclose the breast lesions while the exposure dose was significantly decreased. The areas under the ROC curve between the routine-dose group (0.943) and the low-dose group (0.908) did not show significant difference (P >0.05). Conclusion Low-dose thin-slice MDCT with contrast enhancement can efficiently and safely diagnose breast cancer. Key words: Tomography, X-ray computed; Breast neoplasms; ROC curve
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