Dose profile evaluation in digital breast tomosynthesis exposition using radiochromic film

Abstract

Digital Breast Tomosynthesis (DBT) is an efficient method to diagnose changes in the breast tissues. However, it may promote some future detriment to the patient exposed in this test. The future effects can be evaluating using absorbed dose values. A mammographic phantom should be chosen to simulate approximately the properties of a compressed breast in terms of the primary and dispersed radiation spectrum that exits its lower surface. The use of PMMA has important advantages. It is cheaper than substitutes for specially manufactured fabrics and is more available. The objective of this work will be to estimate the dose profile that a real breast would receive during a DTB examination. For this purpose a breast phantom with acrylic materials (PMMA) and dimensions similar to those of a real breast will be constructed, and the dose will be measured on the surface (ESAK profile) and in the middle cut (air kerma profile) of the breast phantom using the radiochromic film.

Keywords: DBT; Dosimetry; Mammography; Radiochromic film.