Short-term precision for morphometric X-ray absorptiometry

Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA
L FerrarR Eastell

Abstract

Morphometric X-ray absorptiometry (MXA) is a low-radiation technique used for the identification of vertebral deformities. The reliability of MXA measurements is dependent on the precision of the technique, and this is influenced by system error, variability associated with morphometric analysis, and variability within study populations. Short-term precision in vivo affects the identification of prevalent deformities, and may vary according to the age and health status of the study population. The aims of this study were to measure short-term precision in vitro and in vivo for MXA, and to compare intraoperator variability for repeat marking of radiographs in morphometric radiography (MRX) and scan images in MXA. For short-term precision in vitro (based on 30 consecutive MXA phantom scans), the coefficient of variation (CV) was approximately 1%. Intraoperator variability for repeat marking of baseline radiographs and MXA scans (marked without the compare facility) in a population-based group of 32 postmenopausal women, was significantly lower for MRX (CV for vertebral heights = 1.5%) than for MXA (CV = 2.9%). The CV for duplicate same-day MXA scans performed in subjects with osteoporosis (n = 20) was 2.2% for vertebral heights b...Continue Reading

Citations

Jun 16, 2004·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·Ragnhild E OrstavikTore K Kvien
Sep 21, 2005·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·John T Schousboe, C Rowan Debold
Jan 29, 2011·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·Y M KimM L Bouxsein
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Apr 30, 2008·Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry·John T SchousboeNeil Binkley
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Aug 31, 2006·The Journal of Clinical Endocrinology and Metabolism·E Michael Lewiecki, Andrew J Laster
Oct 8, 2013·Substance Use & Misuse·Gergely Radacsi, Peter Hardi

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