Image quality in dynamic CT: a clinical discussion. Radiographics 1993 Jan;13(1):225-33
Date
01/01/1993Pubmed ID
8426933DOI
10.1148/radiographics.13.1.8426933Scopus ID
2-s2.0-0027350964 (requires institutional sign-in at Scopus site) 8 CitationsAbstract
Modern state-of-the-art computed tomographic (CT) scanners emphasize three capabilities: image quality, dynamic scan capability, and a high-resolution thin-section technique. Image quality is fundamental and dependent on optimum performance and the interrelationship of all system components. Variables that affect the performance of the scanner include x-ray tube output and rate of heat dissipation; quantum detection efficiency; electronic noise in the acquisition system; speed, accuracy, and integration of mechanical motion in the gantry and table; and the algorithm used for image reconstruction. System design must allow for dynamic scan operation, either in the single-scan or cluster mode, with short interscan or intergroup delays or, as more recently developed, with helical acquisition. Dynamic scanning is frequently used for nonneurologic applications, including diagnosis of vascular and perivascular diseases and multifocal organ disease, particularly hepatic disease. Efficient operation depends on rapid reconstruction and display capability. Modern systems have been engineered to provide flexible modes of operation, particularly in dynamic scanning, and rapid on-line review and analysis, all of which serve to improve the quality of images produced with dynamic CT scanning.
Author List
Foley WDMESH terms used to index this publication - Major topics in bold
Contrast MediaHumans
Liver
Pancreas
Tomography Scanners, X-Ray Computed
Tomography, X-Ray Computed
Vascular Diseases