Results 141 to 150 of about 13,347 (152)

An Analytic Method for Calculating Scanner-, Kilovoltage Peak–, and Patient Size–Specific Hounsfield Unit Scale Thresholds for Agatston Score

Journal of Computer Assisted Tomography, 2022
Objective This study aimed to calculate scanner-, kilovoltage peak (kVp)–, and patient size–specific computed tomography (CT) number thresholds for determining Agatston score (AgSc). Methods The proposed method was validated using calcium measurements in an anthropomorphic phantom ...
Boyu Peng, Sachin Jambawalikar, Andrew J. Einstein   +2 more
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Lossless Compression of Segmented CT Medical Images According to the Hounsfield Scale

2011 International Conference on Digital Image Computing: Techniques and Applications, 2011
In this paper, a method for loss less compression of medical CT images is presented. The method allows separate compression, transmission, and decompression using data segmentation based on the Hounsfield scale. The presented method modifies our previous method by modifying the prediction scheme.
Denis Špelic, Domen Mongus, Borut �alik   +2 more
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Influence of conventional and extended CT scale range on quantification of Hounsfield units of medical implants and metallic objects

tm - Technisches Messen, 2018
Abstract We report on the suitability of two different ranges of Hounsfield units (HU) in computed tomography (CT) for the quantification of metallic components of active implantable medical devices (AIMD). The conventional Hounsfield units (CHU) range, which is traditionally used in radiology, is well suited for tissue but suspected ...
Zehra Ese, Marcel Kressmann, Jakob Kreutner, Gregor Schaefers, Daniel Erni, Waldemar Zylka   +5 more
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Abstract WP60: Absence of Hyperdense Middle Cerebral Artery Sign, as Measured on the Hounsfield Scale, Predicts Poor Functional Outcome and May Indicate Atherosclerotic Disease in Patients Undergoing Mechanical Thrombectomy for M1 Occlusion

Stroke, 2020
Introduction: The hyper-dense middle cerebral artery sign (HMCAS) on computed tomography (CT) is associated with ischemic stroke involving the middle cerebral artery (MCA) territory. While its presence is indicative of acute thromboembolic disease, the clinical implications of its absence in patients presenting with M1 ...
Kiddy L Ume, Sudeepta Dandapat, Matthew Weber, Cynthia Zevallos, Abigail Levy, Santiago Ortega‐Gutiérrez, Fazeel Siddiqui   +6 more
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Modeling of 3D Implants via Personalized Contour Correction with Evaluation of Bone Tissue Density on the Hounsfield Scale

Biomedical Engineering, 2018
Increases in the numbers of surgical procedures for primary joint replacement inevitably lead to increases in the requirements for revision replacement of the hip joint. The number of patients with severe destruction of the acetabulum, in whom achievement of the implant stability is difficult or impossible, has increased.
M. A. Sadovoy, В. В. Павлов, В. А. Базлов, Т. З. Мамуладзе, M.V. Efimenko, В. М. Прохоренко, E. V. Mamonova, И. А. Кирилова, A. M. Aronov, Alexander Panchenko, N. G. Fomichev   +10 more
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A rapid method for converting medical Computed Tomography scanner topogram attenuation scale to Hounsfield Unit scale and to obtain relative density values

Engineering Geology, 2008
Medical Computed Tomography scanners permit to rapidly obtain qualitative and quantitative information on objects in a non-destructive manner in both longitudinal and transversal directions. CT-scan scales used to express attenuation on the images are different for longitudinal (topograms) and transversal (tomograms) views, restraining the ...
Mathieu J. Duchesne, Francis Moore, Bernard Long, Jacques Labrie   +3 more
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Calibration of CT Hounsfield units for radiotherapy treatment planning of patients with metallic hip prostheses: the use of the extended CT-scale

Physics in Medicine and Biology, 2003
Heterogeneity corrections for radiotherapy dose calculations are based on the electron density of the disturbing heterogeneity. However, when CT planning a radiotherapy treatment, where metallic hip implants are present, considerable artefacts are seen in the images.
Catherine Coolens, Peter J. Childs
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A LARGE-SCALE APPROACH FOR THE CLASSIFICATION OF LIVER LESIONS BASED ON HOUNSFIELD UNITS

PROCEEDINGS OF THE 14TH NATIONAL CONFERENCE ON FUNDAMENTAL AND APPLIED INFORMATION TECHNOLOGY RESEARCH, 2021
Phan Anh Cang, Nguyen Thi Kim Luong, Phan Thượng Cang   +2 more
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Adaptive Hounsfield Scale Windowing in Computed Tomography Liver Segmentation

International Conference on Information Systems Development
Maciej Zakrzewski, Dominik Kwiatkowski, Jan Cychnerski   +2 more
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Non-destructive identification of wood from XVII Century panel painting using clinical X-ray computed tomography Hounsfield Units scale

2023
X-ray Computed Tomography (CT) is a well-established non-destructive imaging technique mainly used to investigate structures and materials of complex objects that can be useful for conservation purposes. In this study, a novel methodology for cultural heritage materials identification directly on computed tomography (CT) images is shown.
Longo S., Fazio E., Capuani S.
openaire   +2 more sources