نتایج جستجو برای: tomosynthesis
تعداد نتایج: 1112 فیلتر نتایج به سال:
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...
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...
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...
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...
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.
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...
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...
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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