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Titolo:
Osteodensitometry of human heel bones by MR spin-echo imaging: Comparison with MR gradient-echo imaging and quantitative computed tomography
Autore:
Machann, J; Raible, A; Schnatterbeck, P; Lutz, O; Claussen, CD; Schick, F;
Indirizzi:
Univ Tubingen, Dept Diagnost Radiol, D-72076 Tubingen, Germany Univ Tubingen Tubingen Germany D-72076 Radiol, D-72076 Tubingen, Germany
Titolo Testata:
JOURNAL OF MAGNETIC RESONANCE IMAGING
fascicolo: 2, volume: 14, anno: 2001,
pagine: 147 - 155
SICI:
1053-1807(200108)14:2<147:OOHHBB>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC-FIELD DISTRIBUTION; IN-VIVO; TRABECULAR BONE; NONINVASIVE ASSESSMENT; DECAY CHARACTERISTICS; MINERAL DENSITY; OSTEOPOROSIS; MARROW; SPECTROSCOPY; SUSCEPTIBILITY;
Keywords:
osteoporosis/diagnosis; bone marrow; heel bones; fast spin-echo imaging; gradient-echo imaging; QCT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Machann, J Univ Tubingen, Dept Diagnost Radiol, Hoppe Seyler Str 3, D-72076 Tubingen,Germany Univ Tubingen Hoppe Seyler Str 3 Tubingen Germany D-72076 many
Citazione:
J. Machann et al., "Osteodensitometry of human heel bones by MR spin-echo imaging: Comparison with MR gradient-echo imaging and quantitative computed tomography", J MAGN R I, 14(2), 2001, pp. 147-155

Abstract

The aim of the study was to Investigate whether quantitative magnetic resonance (MR) fast spin-echo (FSE) imaging with moderate spatial resolution enables osteodensitometry In peripheral yellow bone marrow. Signal intensities In T1-weighted FSE Images from yellow bone marrow indicate the amount of adipose tissue per volume. The signal intensity in marrow regions with spongy bone was assessed and compared to signal Intensity of pure fatty marrow (100%). Heel bones of 30 patients with suspected osteoporosis were analyzedand the FSE images were compared with results from parallel MR gradient-echo (GE) imaging and quantitative computed tomography (QCT) examinations. High correlation was found between FSE imaging and QCT [r = 0.91 In the dorsal region of interest (ROI); r = 0.86 in ventral ROI]. Linear correlation coefficients between GE imaging and QCT were slightly lower in the dorsal part (r = -0.86) and considerably lower in the ventral part (r = -0.68). Correlation between the two MR techniques amounted to r = -0.72/-0.61 (dorsal/ventral). The high correlation between FSE imaging and bone mineral density (BMD) allows possible clinical applications of FSE imaging for diagnosis of osteoporosis. Further Improvements of the accuracy using reference phantomsmight be possible. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 07:48:41