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Titolo:
COMPARISON OF NUCLEAR-MAGNETIC-RESONANCE SPECTROSCOPY WITH DUAL-PHOTON ABSORPTIOMETRY AND DUAL-ENERGY X-RAY ABSORPTIOMETRY IN THE MEASUREMENT OF THORACIC VERTEBRAL BONE-MINERAL DENSITY - COMPRESSIVE FORCE VERSUS BONE-MINERAL
Autore:
MYERS TJ; BATTOCLETTI JH; MAHESH M; GULATI M; WILSON CR; PINTAR F; REINARTZ J;
Indirizzi:
MED COLL WISCONSIN CLIN,DEPT NEUROSURG,200 W WISCONSIN AVE MILWAUKEE WI 53226 MED COLL WISCONSIN WAUWATOSA WI 00000 MARQUETTE UNIV MILWAUKEE WI 53233 DEPT VET AFFAIRS MED CTR MILWAUKEE WI 00000
Titolo Testata:
Osteoporosis international
fascicolo: 3, volume: 4, anno: 1994,
pagine: 129 - 137
SICI:
0937-941X(1994)4:3<129:CONSWD>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUANTITATIVE COMPUTED-TOMOGRAPHY; LUMBAR VERTEBRAE; TRABECULAR BONE; ASH DENSITY; STRENGTH; OSTEOPOROSIS; PREDICTION; BODIES; AGE;
Keywords:
BONE MINERAL CONTENT AND DENSITY; COMPRESSIVE FORCE; DUAL ENERGY X-RAY ABSORPTIOMETRY (DXA); DUAL PHOTON ABSORPTIOMETRY (DPA); NUCLEAR MAGNETIC RESONANCE P-31 SPECTROSCOPY (NMRS); OSTEOPOROSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
T.J. Myers et al., "COMPARISON OF NUCLEAR-MAGNETIC-RESONANCE SPECTROSCOPY WITH DUAL-PHOTON ABSORPTIOMETRY AND DUAL-ENERGY X-RAY ABSORPTIOMETRY IN THE MEASUREMENT OF THORACIC VERTEBRAL BONE-MINERAL DENSITY - COMPRESSIVE FORCE VERSUS BONE-MINERAL", Osteoporosis international, 4(3), 1994, pp. 129-137

Abstract

P-31 nuclear magnetic resonance spectroscopy (NMRS) measurements weremade on human, T2 and T3 vertebral bodies. The bone mineral content (BMC) of isolated vertebral bodies minus the posterior elements and disks was measured using (1) NMRS on a 3.5 T, 85 mm bore GE Medical Systems NT-150 superconducting spectrometer, (2) a Lunar Corporation DPX-L dual-energy X-ray absorptiometry (DXA) scanner in an anterior-posterior (AP) orientation, (3) a Norland Corporation XR26 DXA scanner, also in an AP direction, and (4) a Norland Corporation model 2600 dual-photon absorptiometry (DPA) densitometer in both the AP and superior-inferior (SI) directions. Vertebral body volumes were measured using a waterdisplacement technique to determine volume bone mineral densities (VBMD). They were then compressed to failure using an electrohydraulic testing device, followed by ashing in a muffle furnace at 700-degrees-C for 18 h. Correlations of BMC between NMRS and DPA, DXA and ashing were excellent (0.96 less-than-or-equal-to r less-than-or-equal-to 0.99);in a one-way analysis of variance (ANOVA) test, means were not statistically different at a p level of 0.757. The correlations of VBMD between NMRS and the other methods were not as good (0.83 less-than-or-equal-to r less-than-or-equal-to 0.95); in a one-way ANOVA test, means were not statistically different at a p level of 0.089. BMC was a betterpredictor of ultimate compressive failure than VBMD for all six methods. For NMRS, the regression coefficient for BMC was r2 = 0.806, compared with r2 = 0.505 for VBMD. NMRS may prove an alternative to presentmethods of determing bone mineral.

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Documento generato il 24/11/20 alle ore 07:36:57