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Comparison of malignant calcification identification between breast cone-beam computed tomography and digital mammography

医学 乳腺摄影术 锥束ct 数字乳腺摄影术 乳腺癌 核医学 放射科 钙化 计算机断层摄影术 癌症 内科学
作者
Aidi Liu,Yue Ma,Lu Yin,Yueqiang Zhu,Hong Lu,Haijie Li,Zhaoxiang Ye
出处
期刊:Acta Radiologica [SAGE]
卷期号:64 (3): 962-970 被引量:10
标识
DOI:10.1177/02841851221112562
摘要

Background Calcifications are important abnormal findings in breast imaging and help in the diagnosis of breast cancer. Purpose To compare breast cone-beam computed tomography (CBCT) with digital mammography (DM) in terms of the ability to identify malignant calcifications. Material and Methods In total, 115 paired examinations were performed utilizing breast CBCT and DM; 86 pathology-proven malignant lesions with calcifications detected on DM and 29 randomly selected breasts without calcifications were reviewed by three radiologists. The ability to detect calcifications was assessed on CBCT images. The characterization agreement of two imaging modalities was evaluated by the kappa coefficient. For breast CBCT images, the parameters for the display of calcifications were recorded. The Kruskal–Wallis test was used to compare the preferred slice thickness chosen by each of the three radiologists. The degree of calcification clarity was compared between two modalities using the Mann–Whitney U-test. Results The combined sensitivity and specificity of three radiologists in 85 DM-detected calcifications detection on breast CBCT images were 98.43% (251/255) and 98.85% (86/87), respectively. CBCT images showed substantial agreement with mammograms in terms of the characterization of calcifications morphology (k = 0.703; P < 0.05) and distribution (k = 0.629; P < 0.05). CBCT images with a slice thickness of 0.273 mm and three-dimensional maximum-intensity projection (3D-MIP) were more beneficial for calcifications identification. No statistically significant difference was found between standard DM views and CBCT images for three radiologists on calcification display clarity. Conclusion CBCT images were comparable to mammograms in calcification identification and may be sufficient for malignant calcifications detection and characterization.
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