Faculty of Medicine, Department of Medical Imaging Technology, Medical University of Lodz, Lindleya 6, Lodz, 90-131, Poland.
Department of Medical Physics, Copernicus Memorial Hospital in Lodz Comprehensive Cancer Center and Traumatology, Lodz, Poland.
Phys Eng Sci Med. 2023 Jun;46(2):897-902. doi: 10.1007/s13246-023-01264-1. Epub 2023 Apr 25.
Quality control in mammography is a very important element. One of the parameters indicating the appropriate image quality is the threshold image contrast. The CDMAM phantom is used to measure this parameter. It is currently available in two versions 3.4 and 4.0. The aim of this work is to compare the threshold image contrast readings obtained with the CDMAM 3.4 and CDMAM 4.0 phantoms. In the measurements, 9 CDMAM 4.0 phantoms were used to check the difference in indications of individual copies. The phantom whose readings were closest to the average of all readings was used for comparative measurements with the CDMAM 3.4 phantom. Measurements were made on 40 mammography devices. The obtained images were read with the software provided by the phantom manufacturer and the CDMAM Analysis v2.3.0 (NCCPM) software. The average percentage difference between the minimum and maximum values indicated by the CDMAM 4.0 phantoms was 10.09%. Using the CDMAM Analysis v2.3.0 (NCCPM) software, the average difference in readings between the CDMAM 3.4 and CDMAM 4.0 phantoms is 7.93%, and when using the software provided by the phantom manufacturer, it is as much as 60.15%. The obtained results of the threshold image contrast are affected by the type of software used for reading and the accuracy of the execution of individual elements of the phantom. It is recommended to use CDMAM Analysis v2.3.0 (NCCPM) software or the latest software provided by the phantom manufacturer to read the phantom images.
乳腺摄影质量控制是非常重要的因素。表明适当图像质量的参数之一是阈值图像对比度。CDMAM 模体用于测量此参数。它目前有两个版本 3.4 和 4.0。本工作的目的是比较使用 CDMAM 3.4 和 CDMAM 4.0 模体获得的阈值图像对比度读数。在测量中，使用了 9 个 CDMAM 4.0 模体来检查各个副本指示的差异。使用读数最接近所有读数平均值的模体进行与 CDMAM 3.4 模体的比较测量。对 40 台乳腺摄影设备进行了测量。使用模体制造商提供的软件和 CDMAM Analysis v2.3.0（NCCPM）软件读取获得的图像。CDMAM 4.0 模体指示的最小和最大值之间的平均百分比差异为 10.09%。使用 CDMAM Analysis v2.3.0（NCCPM）软件，CDMAM 3.4 和 CDMAM 4.0 模体之间的读数平均差异为 7.93%，而使用模体制造商提供的软件时，差异高达 60.15%。用于读取和执行模体各个元素的准确性的软件类型会影响阈值图像对比度的获得结果。建议使用 CDMAM Analysis v2.3.0（NCCPM）软件或模体制造商提供的最新软件来读取模体图像。
