Effect of Filtered Back-Projection Filters to Low-Contrast Object Imaging in Ultra-High-Resolution (UHR) Cone-Beam Computed Tomography (CBCT)
نویسندگان
چکیده
منابع مشابه
Artifact reduction techniques in Cone Beam Computed Tomography (CBCT) imaging modality
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Introduction: Recent studies of Computed Tomography (CT) conducted on patient dose reduction have recommended using an iterative reconstruction algorithm and mA (mili-Ampere) dose modulation. The current study aimed to evaluate Iterative Dose Reduction Algorithm (IDREAM) as an iterative reconstruction algorithm. Material and Methods: Two CT p...
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X-ray computed tomography (XCT) with cone beam geometry has become a very important method for non-destructive 3D-characterisation and evaluation of materials. Compact XCT systems can reach resolutions down to 1 μm and even below. However, the polychromatic nature of the source, limited photon flux and the consequent long measurement times as well as all kinds of measurement artifacts lead to l...
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OBJECTIVE The aim of this study was to evaluate how different iterative and filtered back projection kernels affect the computed tomography (CT) numbers and low contrast detectability. METHODS Five different scans were performed at 6 different tube potentials on the same Catphan 600 phantom using approximately the same dose level and otherwise identical settings. The scans were reconstructed ...
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Introduction: Due to the complexity of facial asy-mmetry, the diagnosis of different aspects of asymmetry via conventional radiographs is not precise. In this study, we investigated findings of facial asymmetry by using cone- beam computed tomography (CBCT) images. Materials and Methods: In this descriptive study, we evaluated CBCT findings of 18 patients i.e. a group of 14 females and 4 males ...
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ژورنال
عنوان ژورنال: Sensors
سال: 2020
ISSN: 1424-8220
DOI: 10.3390/s20226416