Software upgrading in a CT scanner. Influence on quantitative CT
| dc.contributor.author | Kalef-Ezra, J. A. | en |
| dc.contributor.author | Karantanas, A. H. | en |
| dc.date.accessioned | 2015-11-24T18:51:10Z | |
| dc.date.available | 2015-11-24T18:51:10Z | |
| dc.identifier.issn | 0284-1851 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/18212 | |
| dc.rights | Default Licence | - |
| dc.subject | *Absorptiometry, Photon | en |
| dc.subject | Humans | en |
| dc.subject | Phantoms, Imaging | en |
| dc.subject | *Software | en |
| dc.subject | Spine/radiography | en |
| dc.subject | *Tomography, X-Ray Computed/methods | en |
| dc.title | Software upgrading in a CT scanner. Influence on quantitative CT | en |
| heal.abstract | PURPOSE: In an attempt to improve field uniformity and CT number stability, the software in a CT scanner was replaced with a new version. The purpose of the present study was to investigate the influence of the software upgrading on density measurements. MATERIAL AND METHODS: The upgrading influence was investigated by means of a torso phantom (European spinal). The phantom simulates a torso which contains 3 vertebrae of different densities. RESULTS: Despite the use of a reference standard under the phantom, the software change resulted in: a) improved short-term precision; b) increased density values at 80 and 100 kVp, decreased at 130 kVp; and c) increased influence of the kVp on the values. CONCLUSION: The results of the present study suggest that conversion factors have to be used in density values for reference populations as well as in the values of patients undergoing follow-up studies. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | http://www.ncbi.nlm.nih.gov/pubmed/8995454 | - |
| heal.identifier.secondary | http://informahealthcare.com/doi/abs/10.3109/02841859609175457 | - |
| heal.journalName | Acta Radiol | en |
| heal.journalType | peer-reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1996 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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