A comparison of digitized storage phosphors and conventional mammography in the detection of malignant microcalcifications.
A comparison of digitized storage phosphors and conventional mammography in the detection of malignant microcalcifications.
复制标题
数字化存储荧光粉和传统乳房X线照相术在恶性微钙化检测中的比较。
DOI：
10.1097/00004424-198810000-00004
复制
发表时间：
1988
影响因子：
6.7
通讯作者：
R. Greene
中科院分区：
文献类型：
--
作者：
J. Oestmann;D. Kopans;D. Hall;K. McCarthy;J. Rubens;R. Greene
将传统乳腺X线摄影对恶性肿瘤源性微钙化的可检测性与从基于存储磷光体的数字X线摄影系统获得的数字图像（2000 X 2510像素× 10位）的可检测性进行比较，该系统能够在相同曝光因子（30 kVp，250 mAs，65 cm胶片焦距）下实现5线对/mm分辨率。将微钙化（直径50-800微米）随机叠加在保存的人类乳腺标本上。基于4名阅片员的480个观察结果的ROC分析表明，尽管空间分辨率较低，但数字图像检测钙化的能力（ROC面积= 0.871 +/- 0.066）与传统乳腺X线摄影（ROC面积= 0.866 +/- 0.075）相当。使用数字乳腺X线摄影，62%的所有簇被正确定位，但只有23.6%的个体钙化被计数。使用传统的乳房X线摄影，61%的所有簇被正确定位，但显著更多的个体钙化（31.5%）被计数。
The detectability of malignant tumor-derived microcalcifications with conventional mammography was compared to that with digital images (2000 X 2510 pixels by 10 bits) derived from a storage phosphor-based digital radiography system capable of 5 line pair/mm resolution at identical exposure factors (30 kVp, 250 mAs, 65 cm film-focus distance). Microcalcifications (50-800 microns in diameter) were randomly superimposed on a preserved human breast specimen. ROC analysis based on 480 observations made by four readers indicated that the ability to detect the calcifications with digital images (ROC area = 0.871 +/- 0.066) was equivalent to conventional mammography (ROC area = 0.866 +/- 0.075) despite lower spatial resolution. With digital mammography, 62% of all clusters were correctly localized, but only 23.6% of the individual calcifications were counted. With conventional mammography 61% of all clusters were correctly localized, but significantly more of the individual calcifications (31.5%) were counted.