نتایج جستجو برای: tomosynthesis

تعداد نتایج: 1112  

2010
Guang Yang John H. Hipwell Matthew J. Clarkson Christine Tanner Thomy Mertzanidou Spencer Gunn Sébastien Ourselin David J. Hawkes Simon R. Arridge

Digital breast tomosynthesis (DBT) has the potential to enhance breast cancer detection by reducing the confounding effect of superimposed tissue associated with conventional mammography. In addition the increased volumetric information should enable temporal datasets to be more accurately compared, a task that radiologists routinely apply to conventional mammograms to detect the changes associ...

2012
Raymond J. Acciavatti Andrew D. A. Maidment

In digital breast tomosynthesis (DBT), oblique x-ray incidence shifts the image of an object in sub-pixel detector element increments with each projection angle. Our previous work has shown that DBT is capable of superresolution as a result of this property. Although super-resolution is achievable over a broad range of positions for frequencies parallel to the chest wall side of the breast supp...

2017
PowerLook Tomo

PowerLook® Tomo Detection, a concurrent computer-aided detection (CAD) system for digital breast tomosynthesis (DBT) developed by iCAD, Inc., Nashua, NH, was tested to determine if the software can shorten the reading time of DBT without affecting radiologist interpretation or performance. The results of this study showed a 29.2% average reduction in reading time (up to 36.5% reduction) with th...

Journal: :Physics in medicine and biology 2014
Magdalena B Szafraniec Thomas P Millard Konstantin Ignatyev Robert D Speller Alessandro Olivo

In this note we present the first proof-of-concept results on the potential effectiveness of the edge-illumination x-ray phase contrast method (in its 'coded-aperture' based lab implementation) combined with tomosynthesis. We believe that, albeit admittedly preliminary (e.g. we only present phantom work), these results deserve early publication in a note primarily for four reasons. First, we fu...

2015
Sung-Joon Park Ji Yung Choo Ki Yeol Lee Je-Hyeong Kim Jung-Woo Choi Suk Keu Yeom Baek Hyun Kim

Bronchial carcinosarcoma is a very rare malignant tumor that is composed of carcinomatous and sarcomatous elements. We describe the first case in which digital tomosynthesis was useful for the evaluation of airway obstruction by bronchial carcinosarcoma that was overlooked on initial chest radiography.

Journal: :Physics in medicine and biology 2015
Lesley Cockmartin Nicholas W Marshall Chantal Van Ongeval Gwen Aerts Davina Stalmans Federica Zanca Eman Shaheen Frederik De Keyzer David R Dance Kenneth C Young Hilde Bosmans

This paper introduces a hybrid method for performing detection studies in projection image based modalities, based on image acquisitions of target objects and patients. The method was used to compare 2D mammography and digital breast tomosynthesis (DBT) in terms of the detection performance of spherical densities and microcalcifications. The method starts with the acquisition of spheres of diff...

2013
Kristina Vult von Steyern Isabella M. Björkman-Burtscher Mats Geijer

OBJECTIVE The first radiographic scoring system for pulmonary cystic fibrosis was presented in 1958. Since then a multitude of scoring systems for radiography and computed tomography (CT) have been presented, recently also for tomosynthesis and magnetic resonance imaging (MRI). The aim of the current review was to analyse and compare the plethora of scoring systems for cystic fibrosis, especial...

2014
Nachiko Uchiyama Minoru Machida Hitomi Tani Mari Kikuchi Yasuaki Arai Kyoichi Otsuka Andreas Fieselmann Anna K. Jerebko Thomas Mertelmeier

2010
Giovanni Palma Isabelle Bloch Serge Muller

Digital Breast Tomosynthesis (DBT) is a new 3D imaging technique aiming at overcoming some limitations of mammography. A computer aided detection system may help the radiologist to process the increased amount of data of this new modality. In this paper we propose to address the detection of masses and architectural distortions in DBT datasets. To achieve this task, we propose a detection schem...

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