OBJECT-TEST OF QUALITY CONTROL OF IMAGES OF DIGITAL MAMMOGRAPHY BY TOMOSYNTHESIS

摘要

The invention relates to a semi-anatomical test object or phantom simulating a breast under firm compression, made of a solid plastic material equivalent to breast tissue, in which inclusions representing anatomical details of the breast and inserts of compositions and Specifically determined dimensions for Digital Breast Tomosynthetic Mammography (DBT) mammography images, according to a very precise 3D configuration and distribution. This specific test object is designed to routinely monitor the quality of images generated by DBT devices, in order to quantify their performance, their limits and to verify their stability over time. The design of this test object makes it possible to acquire the images of DBT according to the technical parameters similar to those used clinically and to quantify the following parameters: the quantity of missing tissue, the geometric distortion, the dispersion function of the artifact (ASF), resolution in the X, Y and Z planes, contrast, homogeneity, signal-to-noise difference value, fiber / microcalcification / mass detectability limits to determine a quality score picture.