| Imaging modalities in x-ray computerized tomography and in selected volume tomography. | |
| | |
MedLine Citation:
|
PMID: 10211798 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
This review of different principles used in x-ray computerized tomography (CT) starts with attenuation (transmission) CT. The pros and cons of different geometrical solutions, single-ray, fan-beam and cone-beam, are discussed. Attenuation CT measures the spatial distribution of the linear attenuation coefficient, mu. The contributions of different interaction processes to mu have also been used for CT. Fluorescence CT is based on measurements of the contribution, cZtauZ/rho, from an element Z with concentration cZ, to the linear attenuation coefficient. Diffraction CT measures the differential coherent cross section d sigma (theta)(coh)/d omega, Compton CT the incoherent scatter cross section sigma. The usefulness of these modalities is illustrated. CT methods based on secondary photons have a competitor in selected volume tomography. These two tomography methods are compared. A proposal to perform Compton profile tomography is also discussed, as is the promising method of phase-contrast x-ray CT. |
| | |
Authors:
|
C A Carlsson |
Related Documents
:
|
7452338 - High-resolution metrizamide ct cisternography in sellar and suprasellar abnormalities. 19918488 - Plain x-ray, computed tomography and magnetic resonance imaging findings of telangiecta... 21901958 - Computed tomography (ct) in blunt liver injury: a pictorial essay. 629158 - Computed axial tomography in otorhinolaryngology. 9809878 - Mri of meniscal bucket-handle tears. 11357498 - Functional imaging of malignant paragangliomas and carcinoid tumours. |
Publication Detail:
|
Type: Journal Article; Review |
Journal Detail:
|
Title: Physics in medicine and biology Volume: 44 ISSN: 0031-9155 ISO Abbreviation: Phys Med Biol Publication Date: 1999 Mar |
Date Detail:
|
Created Date: 1999-05-27 Completed Date: 1999-05-27 Revised Date: 2005-11-16 |
Medline Journal Info:
|
Nlm Unique ID: 0401220 Medline TA: Phys Med Biol Country: ENGLAND |
Other Details:
|
Languages: eng Pagination: R23-56 Citation Subset: IM |
Affiliation:
|
Radiation Physics Department, Faculty of Health Sciences, Linköping University, Sweden. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Algorithms Animals Fluorescence Humans Image Processing, Computer-Assisted Interferometry Monte Carlo Method Photons Scattering, Radiation Tomography, X-Ray Computed / instrumentation, methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Towards the development of peptide mimotopes of carbohydrate antigens as cancer vaccines.
Next Document: Correction factors and performance of a 4 degrees C sealed water calorimeter.