منابع مشابه
Dual-Energy CT in Neuroimaging
Image contrast in CT is mostly dependent on elements with high atomic weight, such as calcium, iron, and iodine The concentrations of these elements can be calculated from dual-energy x-ray data based on their characteristic attenuation patterns Dual-energy CT may can be helpful in neuroimaging to: Differentiate between hemorrhage and iodinated contrast agents in brain parenchyma Improve CT ang...
متن کاملNonuniqueness in dual-energy CT.
PURPOSE The goal is to determine whether dual-energy computed tomography (CT) leads to a unique reconstruction using two basis materials. METHODS The beam-hardening equation is simplified to the single-voxel case. The simplified equation is rewritten to show that the solution can be considered to be linear operations in a vector space followed by a measurement model which is the sum of the ex...
متن کاملA novel dual energy CT-based attenuation correction method in PET/CT systems: A phantom study
In present PET/CT scanners, PET attenuation correction is performed by relying on the information given by CT scan. In the CT-based attenuation correction methods, dual-energy technique (DECT) is the most accurate approach, which has been limited due to the increasing patient dose. In this feasibility study, we have introduced a new method that can implement dual-en...
متن کاملDual-Energy CT for the Musculoskeletal System.
The principal advantages of dual-energy computed tomography (CT) over conventional CT in the musculoskeletal setting relate to the additional information provided regarding tissue composition, artifact reduction, and image optimization. This article discusses the manifestations of these in clinical practice-urate and bone marrow edema detection, metal artifact reduction, and tendon analysis, wi...
متن کاملDual Energy CT in Clinical Practice.
Dual Energy CT in Clinical Practice, Johnson, T., Fink, C., Schönberg, S. O., Reiser, M. F., Springer-Verlag, Berlin, Heidelberg, 2011. Hardcover, 219 pp. Price: $239.00. ISBN: 978-3-642-01739-1.
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2013
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(15)32711-0