Subjects and methods The study included 166 mammograms with indeterminate findings selected from 1600 mammograms. They were classified into two groups: group 1 ‘Diagnostic mammograms’ of symptomatic women and group 2 ‘Screening mammograms’. Dense breasts assigned as ACR3 and ACR4 presented 69% (n = 114/166) of the studied cases. FFDM and 3D tomosynthesis examination was done and imaging finding...

A proposed European protocol for dosimetry in digital breast tomosynthesis (DBT) has been applied to estimate the average glandular breast dose (AGD) for two different DBT units. AGD was measured for the examination of series of women and for breast-simulating polymethyl methacrylate (PMMA) phantoms, thus assessing the suitability of the phantoms used for dosimetry in 2D mammography for DBT dos...

The National Cancer Center Hospital East introduced a Shimadzu SONIALVISION safire R/F System with direct-conversion FPD that is mainly used for gastrointestinal examinations. This system incorporates a tomosynthesis function that allows the attending physician to take chest tomosynthesis images when required. Since November 2008, Dr. Moriyama of the Research Center for Cancer Prevention and Sc...

Digital breast tomosynthesis promises solutions to many of the problems currently associated with projection mammography, including elimination of artifactual densities from the superposition of normal tissues and increasing the conspicuity of true lesions that would otherwise be masked by superimposed normal tissue. We have investigated the performance of a novel tomosynthesis system in a clin...

ABSTRACT Digital tomosynthesis mammography algorithms allow reconstructions of arbitrary planes in the breast from limitedangle series of projection images as the x-ray source moves along an arc above the breast. Though several tomosynthesis algorithms have been proposed, no complete comparison of the methods has previously been conducted. This paper presents an analysis of impulse response for...

Tomosynthesis was developed for mammography, especially breast cancer detection. However, its limited-angular range scan and resultant data incompleteness causes strong image artifacts and distortions. To address this problem, a hybrid imaging method was proposed in our previous work, which combines tomosynthesis and low-resolution CT into a single system to produce fewer artifacts and distorti...

PURPOSE This work proposes a new method of building 3D models of microcalcification clusters and describes the validation of their realistic appearance when simulated into 2D digital mammograms and into breast tomosynthesis images. METHODS A micro-CT unit was used to scan 23 breast biopsy specimens of microcalcification clusters with malignant and benign characteristics and their 3D reconstru...

The aim of the present study was to investigate the dependency of the accuracy and precision of nodule diameter measurements on the radiation dose level in chest tomosynthesis. Artificial ellipsoid-shaped nodules with known dimensions were inserted in clinical chest tomosynthesis images. Noise was added to the images in order to simulate radiation dose levels corresponding to effective doses fo...