부산대학교 도서관

Quality control of breast X-ray equipment is essential to obtain clear images of calcifications and lumps that are characteristic of early-stage breast cancer. The method described in the digital mammography guideline is the widely accepted method for quality control. Although image quality evaluation is often conducted using a phantom, X-ray output measurements are not routinely taken. Here, we developed a simplified method of dosimetry for mammography and distributed it to clinical facilities, established a regional cooperative quality control liaison group, and started to operate it at the facilities. We also developed a quality management program to collect the data, through a web application. Quality management checks that are conducted every six months include the constancy test: reproducibility, tube voltage characteristics, tube current time product characteristics, and half-value layer measurement, and daily management is conducted at the inspection conducted at the start of use of the equipment daily. Table, HTML, and Script were built for each test, and registration/update/removal/list and group display programs were developed. By allocating identical user IDs and passwords to users, the data can be shared, and the list and graphic display make it possible for users to visualize the device management situation easily. The mammography DRL is supposed to be evaluated by AGD. As the half-layer characteristics of the invariance test were stable, the AGD that the device was currently showing could be indicated by using the half-layer and air kerma as part of routine management. We want to promote the use of this management system in clinical practice, so that the users can easily manage breast X-ray equipment.