In vivo measurement of radius calcium/phosphorus ratio by X-ray absorptiometry
| dc.contributor.author | Fountos, G. | en |
| dc.contributor.author | Tzaphlidou, M. | en |
| dc.contributor.author | Kounadi, E. | en |
| dc.contributor.author | Glaros, D. | en |
| dc.date.accessioned | 2015-11-24T19:11:07Z | |
| dc.date.available | 2015-11-24T19:11:07Z | |
| dc.identifier.issn | 0969-8043 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/20901 | |
| dc.rights | Default Licence | - |
| dc.subject | Absorptiometry, Photon | en |
| dc.subject | Adult | en |
| dc.subject | Aged | en |
| dc.subject | Bone and Bones/*chemistry/cytology/pathology | en |
| dc.subject | Calcium/*analysis | en |
| dc.subject | *Calcium Phosphates | en |
| dc.subject | Cerium | en |
| dc.subject | Equipment Design | en |
| dc.subject | Humans | en |
| dc.subject | Middle Aged | en |
| dc.subject | Osteoporosis/pathology | en |
| dc.subject | *Phantoms, Imaging | en |
| dc.subject | Phosphorus/*analysis | en |
| dc.subject | Regression Analysis | en |
| dc.subject | Samarium | en |
| dc.title | In vivo measurement of radius calcium/phosphorus ratio by X-ray absorptiometry | en |
| heal.abstract | We describe a new method for assessing the skeletal Ca/P ratio in vivo using X-ray absorptiometry. By placing cerium (Ce) and samarium (Sm) filters in the X-ray beam from a commercial X-ray source (Norland), mean photon energies of 39 and 89 keV were obtained. The instrument was designed to take measurements of the forearm, at a site located at the distal 1/3 of the radius. The system was calibrated with three bone phantoms: Ca10(PO4)6(OH)2, Ca(HPO4)(H2O)2 and Ca(HPO4)2(H2O)). The precision for measuring the Ca/P ratio in the human radius was 2.3% CV for a skin dose to the forearm ranging from 0.3 to 0.4 mGy, depending on the width of the arm. The Ca/P ratio of the radius was significantly lower in patients with postmenopausal osteoporosis than in premenopausal controls. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | http://www.ncbi.nlm.nih.gov/pubmed/10404611 | - |
| heal.identifier.secondary | http://ac.els-cdn.com/S0969804399000561/1-s2.0-S0969804399000561-main.pdf?_tid=ad11e3837edf3d30ce0c70103546e63a&acdnat=1336114332_7315635c69aaff68246261a24b58e056 | - |
| heal.journalName | Appl Radiat Isot | en |
| heal.journalType | peer-reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1999 | - |
| 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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