The contents of this document may be copied for use by staff working in the public sector but may not be copied for any other purpose without prior permission from the NHS Cancer Screening Programmes.

INTRODUCTION Mammography is one of the most common X-ray examinations although it is well-known that the anatomical background of the breast is the main obstacle when it comes to detection of breast lesions with this method. Tomosynthesis is a three-dimensional radiographic technique which, to a large extent, can suppress the confounding effect of the anatomical background. Tomosynthesis is a s...

In this paper, we propose an extension of connected filters into the fuzzy set framework. We introduce a modeling of imprecision via the introduction of the fuzzy umbra image concept which allows us to express fuzzy connected operators for fuzzy gray scale images. Using this new tool, a set of filters families is proposed and their properties are discussed. The expression of classical filters i...

A novel hierarchical model is introduced to solve a general problem of detecting groups of similar objects. Under this model, detection of groups is performed in hierarchically organized layers while each layer represents a scope for target objects. The processing of these layers involves sequential extraction of appearance features for an individual object, consistency measurement features for...

Regularization approaches for the limited-angle reconstruction problem in digital breast tomosynthesis are widelyused. Though, their benefits depend largely upon a suitable regularization parameter estimation. We aim to evaluate the reconstruction quality of precise small contrast features objectively with the help of an automated process. These features were represented by so-called Landolt ri...

Digital breast tomosynthesis (DBT) is an emerging technique that allows for slices parallel with the detector to be constructed through the breast, as opposed to two dimensional mammography. Present phantoms for use on mammography systems are two dimensional in nature and focus mainly on differences in contrast. Since tomosynthesis is a three-dimensional-technique, a suitable phantom for use on...

The AAPM, through its members, meetings, and its flagship journal Medical Physics, has played an important role in the development and growth of x-ray tomography in the last 50 years. From a spate of early articles in the 1970s characterizing the first commercial computed tomography (CT) scanners through the "slice wars" of the 1990s and 2000s, the history of CT and related techniques such as t...