PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 11286582

Multi-slice technology in computed tomography.

P Dawson·W R Lees
View original source ↗Export metadata ↓

Abstract

Multi-slice systems represent a considerable advance in CT and will assure the future of the technique for many years to come. This article describes this new technology, indicating its provenance and its position in the evolution of CT. While it does not seek to be a physics and engineering text, enough detail of these are given to allow an informed discussion of the many advantages and a few potential problems associated with the technology. A discussion of a number of applications and a brief consideration of contrast enhancement regimens and the possible need for their modification are presented.

Explore related subjects

Equipment DesignHumansPhysical PhenomenaPhysicsRadiometryTechnology, RadiologicTime FactorsTomography Scanners, X-Ray ComputedJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

P Dawson, W R Lees. 2001. Multi-slice technology in computed tomography.. https://doi.org/10.1053/crad.2000.0651

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2001

Changing chairs: anticipating problems in prescribing wheelchairs.

PURPOSE: This article presents a framework for prescribing, ordering, and adapting a new wheelchair, focusing on individual, environmental and wheelchair factors that must be taken into consideration to ensure optimal function. METHOD: A review and analysis was conducted of all factors relevant to the transition to a new wheelchair. Without appropriate planning and implementation, this transition can result in unnecessary expenses, duplication of effort, and possibly even injury to the user and abandonment of the wheelchair. RESULTS: Recommendations are provided to manufacturers, therapists, technicians, users, insurers and physicians, who must work together throughout this process. To the extent feasible, the authors suggest that major changes from the previous wheelchair should be avoided, particularly for people with substantial functional limitations. Therapists and technicians must measure the user accurately, and anticipate those factors that can impede a smooth transition. Insurers and other payors must recognize that changing wheelchairs will often require substantial professional assistance, including several fittings to adjust the new chair to the needs of the user. CONCLUSION: Additional research and case reporting on outcomes of adjusting to a new wheelchair appear warranted.

Equipment Design↗
PubMed2001

Current status of mechanical computed tomography in cardiac imaging.

Mechanical computed tomography (CT) scanners have undergone significant improvements in their ability to perform cardiac imaging. Previously limited by cardiac motion artifacts and slow acquisition speeds, newer-generation scanners are able to obtain multiple slices with a temporal resolution of <100 msec, minimizing motion artifacts to levels comparable to electron-beam computed tomography (EBCT). This is done using various approaches, including (1) prospective and retrospective electrocardiographic gating, (2) multislice detectors, and (3) partial and segmented reconstruction algorithms. The major CT manufacturers are putting significant resources into protocol optimization and cardiac applications development, including coronary calcium quantification, functional analysis, and coronary CT angiography. Given the rapid pace of development, higher in-plane and z-axis spatial resolution, and superior signal-to-noise ratio of mechanical scanners, it is evident that they will be capable of performing cardiac imaging with a quality approaching or possibly surpassing that of existing EBCT scanners. This article summarizes the current status of mechanical CT scanners in cardiac imaging.

Equipment Design↗