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首页> 外文会议>International Workshop on Digital Mammography(IWDM 2006); 20060618-21; Manchester(GB) >Contrast Threshold of 4 Full Field Digital Mammography Systems Using Different Measurement Methods
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Contrast Threshold of 4 Full Field Digital Mammography Systems Using Different Measurement Methods

机译：使用不同测量方法的4个全场数字化乳腺摄影系统的对比度阈值

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摘要

We compared three conspicuity tests applied to four full field digital mammography (FFDM) systems. The tests included: 1) the calculation of noise equivalent quanta (NEQ); 2) contrast-detail analysis with the CDMAM 3.4 phantom and 3) evaluation of the detectability of (simulated) microcal-cifications with specific well-known dimensions in mastectomy images. For each contrast-resolution test method, the exposure, processing and viewing conditions were identical. As a result, the only variable for a given test was the physical performance of the detector. The three test methods each rank the detectors in the same order. The flat-panel detector ranked the best overall, the dual-sided read-out storage phosphor detector ranked second and the single-sided-read-out storage phosphor detectors with 50 μm and 100 μm pixel sizes ranked similarly and were inferior to the other 2 detectors.
机译：我们比较了应用于四个全场数字乳房X线摄影（FFDM）系统的三个显着性测试。测试包括：1）噪声等效量（NEQ）的计算； 2）使用CDMAM 3.4体模进行对比细节分析，以及3）评估乳房切除术图像中具有特定的已知尺寸的（模拟）微缩显微镜的可检测性。对于每种对比度分辨率测试方法，曝光，处理和观察条件都相同。结果，给定测试的唯一变量是检测器的物理性能。三种测试方法均以相同的顺序对检测器进行排序。平板探测器总体上排名最佳，双面读出式存储磷光体排名第二，像素尺寸为50μm和100μm的单面读出式存储磷光体排名相近，次于其他2个探测器。

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