Evaluating the four-dimensional cone beam computed tomography with varying gantry rotation speed
نویسندگان
چکیده
منابع مشابه
Target-specific optimization of four-dimensional cone beam computed tomography.
PURPOSE Under-sampling artifacts are a major problem in four-dimensional cone-beam computed tomography (4D-CBCT) and may compromise evaluation of target motion. Several studies have addressed scan parameter selection for minimizing under-sampling artifacts; however, the role of the target characteristics in scan parameter selection has not been investigated. In this work, the authors evaluated ...
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Background and Objectives The topography of the sinus floor and its relationship with maxillary teeth roots varies with age, pneumatization size and grade, positioning of the teeth, and Genetics. This study used cone beam computed tomography (CBCT) to evaluate the distance between posterior teeth and the maxillary sinus floor in patients in Rafsanjan City, Iran. Materials and Methods This de...
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In four-dimensional (4D) cone-beam computed tomography (CBCT), there is a spatio-temporal tradeoff that currently limits the accuracy. The aim of this study is to develop a Bregman iteration based formalism for high quality 4D CBCT image reconstruction from a limited number of low-dose projections. The 4D CBCT problem is first divided into multiple 3D CBCT subproblems by grouping the projection...
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ژورنال
عنوان ژورنال: The British Journal of Radiology
سال: 2016
ISSN: 0007-1285,1748-880X
DOI: 10.1259/bjr.20150870