Detection of masses and microcalcifications of breast cancer on digital mammograms: comparison among hard-copy film, 3-megapixel liquid crystal display (LCD) monitors and 5-megapixel LCD monitors: an observer performance study
Detection of masses and microcalcifications of breast cancer on digital mammograms: comparison among hard-copy film, 3-megapixel liquid crystal display (LCD) monitors and 5-megapixel LCD monitors: an observer performance study
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DOI：
10.1007/s00330-006-0452-6
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发表时间：
2007-05-01
影响因子：
5.9
通讯作者：
Honda, Hiroshi
中科院分区：
文献类型：
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作者：
Kamitani, Takeshi;Yabuuchi, Hidetake;Honda, Hiroshi
本研究的目的是比较使用3兆像素（3 M）和5兆像素（5 M）液晶显示器（LCD）进行硬拷贝阅读和软拷贝读取时，观察者在检测乳腺癌肿块和微钙化方面的表现。对于微钙化检测测试，我们准备了100个乳房X线照片：40个手术证实的癌症病例和60个正常病例。对于肿块检测测试，我们准备了100张乳房X光片：50例癌症病例和50例正常病例。在6名阅片者评估每种模式的微钙化和肿块集后，进行受试者工作特征（ROC）分析。使用硬拷贝以及3 M和5 M LCD显示器进行质量检测的平均A（z）s分别为0.923、0.927和0.920;无显著差异。使用硬拷贝、3 M和5 M LCD监视器进行微钙化检测的平均A（z）分别为0.977、0.954和0.972。无显著差异，但硬拷贝和3 M LCD显示器之间以及3 M和5 M LCD显示器之间的P值分别为0.08和0.09。总之，硬拷贝和两台LCD监视器检测乳腺癌肿块的观察者表现相当;然而，使用3 M LCD监视器进行软拷贝阅读显示，检测乳腺癌微钙化的观察者表现略低于硬拷贝或5 M LCD监视器阅读。
The purpose of the study was to compare observer performance in the detection of masses and microcalcifications of breast cancer among hard-copy reading and soft-copy readings using 3-megapixel (3M) and 5-megapixel (5M) liquid crystal display (LCD) monitors. For the microcalcification detection test, we prepared 100 mammograms: 40 surgically verified cancer cases and 60 normal cases. For the mass detection test, we prepared 100 mammograms: 50 cancer cases and 50 normal cases. After six readers assessed both microcalcifications and masses set for each modality, receiver operating characteristic (ROC) analysis was performed. The average A(z)s for mass detection using a hard copy and 3M and 5M LCD monitors were 0.923, 0.927 and 0.920, respectively; there were no significant differences. The average A(z) for microcalcification detection using hard copy, 3M and 5M LCD monitors was 0.977, 0.954 and 0.972, respectively. There were no significant differences, but the P-values between the hard copy and 3M LCD monitor and that between the 3M and 5M LCD monitor were 0.08 and 0.09, respectively. In conclusion, the observer performances for detecting masses of breast cancers were comparable among the hard copy and two LCD monitors; however, soft-copy reading with a 3M LCD monitor showed slightly lower observer performance for detecting microcalcifications of breast cancers than hard-copy or 5M LCD monitor reading.