PurposeBreast dosimetry in mammography is an important aspect of radioprotection since women are exposed periodically to ionizing radiation due breast cancer screening programs. Mean glandular dose (MGD) the standard quantity employed for establishment reference levels retrospective population studies. However, MGD calculations requires glandularity estimation. This work proposes a deep learnin...

BACKGROUND X-ray mammography is one of the general methods for early detection of breast cancer. Since glandular tissue in the breast is sensitive to radiation and it increases the risk of cancer, the given dose to the patient is very important in mammography. OBJECTIVES The aim of this study was to determine the average absorbed dose of X-ray radiation in the glandular tissue of the breast d...

This study aims to determine the average absorbed dose of radiation in glandular tissue during mammography and to investigate factors that influence the average glandular dose, particularly the local distribution of glandular tissue within the breast and breast skin thickness. An EGSnrc Monte Carlo code and associated codes were employed in the simulation. The breast voxel models used consist o...

The purpose of this work is to provide an evaluation of the mean glandular dose (MGD) for breast computed tomography (CT) with synchrotron radiation in an axial scanning configuration with a partial or total organ volume irradiation, for the in vivo program of breast CT ongoing at the ELETTRA facility (Trieste, Italy). A Geant4 Monte Carlo code was implemented, simulating the photon irradiation...

ID: 12899 Title: Dosimetric Characterization of a Dedicated Breast Computed Tomography Clinical Prototype System Purpose: To determine the radiation dosimetry characteristics of a dedicated breast computed tomography (BCT) clinical prototype system. Method and Materials: The relevant parameters of the BCT system were replicated in a Monte Carlo simulation program based on the Geant4 toolkit. To...

PURPOSE To assess variations of glandular doses for a group of patients when different dose modes are selected for a specific system. MATERIALS AND METHODS All measurements were obtained with a Senographe DMR mammography unit (GE Medical Systems). Automatic exposure control with either contrast or standard mode was routinely used in patient examinations. Entrance surface air kerma (ESAK) valu...

Pesawat mamografi merupakan alat yang digunakan pada kegiatan skrining payudara, sehingga dosis radiasi diterima payudara atau Mean Glandular Dose (MGD) perlu diperhatikan. Penelitian ini menggunakan pesawat dengan anoda berbahan Molybdenum ( Mo ) dan filter bahan Rhodium Rh ). dilakukan tujuan untuk mendapatkan nilai MGD dari setiap penggunaan tegangan tabung kombinasi Mo/Mo Mo/Rh serta memban...