Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Weber, K; Lunt, M; Gowin, W; Lauermann, T; Armbrecht, G; Wieland, E; Leb, G; O'Neill, T; Felsenberg, D; Reeve, J.
Measurement imprecision in vertebral morphometry of spinal radiographs obtained in the European Prospective Osteoporosis Study: consequences for the identification of prevalent and incident deformities.
Br J Radiol. 1999; 72(862):957-966
Doi: 10.1259/bjr.72.862.10673947
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- Führende Autor*innen der Med Uni Graz
- Weber Kurt
- Co-Autor*innen der Med Uni Graz
- Leb Georg
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- Abstract:
- Several algorithms are currently in use for evaluating vertebral deformities from plain lateral radiographs of the lumbar and thoracic spine. However, the effects of measurement imprecision as well as uncertainties over image magnification on the correct identification of prevalent and incident vertebral deformities with these algorithms has been little studied. In a pilot study for the European Prospective Osteoporosis Study (EPOS), plain radiographs were submitted to a single central evaluating centre for measurement of vertebral height from T4 to L4. The thoracic and lumbar spines were imaged on separate films, and we have assessed the precision of measurement of vertebral heights and height ratios. The standard deviation of the differences between films of each of three height measurements ranged from 1.1 to 1.2 mm. A two-stage strategy for identifying incident deformities was devised. This required that the vertebra be a prevalent deformity at the time of the second radiograph and also that at least one of the vertebral ratios should have changed significantly since the first radiograph. The second stage removed all but two of the 18 vertebrae flagged positive in the first stage but not considered to be certain incident fractures by clinical reading of the radiographs.
- Find related publications in this database (using NLM MeSH Indexing)
- Aged -
- Europe - epidemiology
- Female -
- Follow-Up Studies -
- Humans -
- Incidence -
- Lumbar Vertebrae - diagnostic imaging
- Lumbar Vertebrae - pathology
- Male -
- Middle Aged -
- Osteoporosis - diagnostic imaging
- Osteoporosis - epidemiology
- Osteoporosis - pathology
- Pilot Projects -
- Prevalence -
- Prospective Studies -
- Radiography -
- Reproducibility of Results -
- Spinal Diseases - diagnostic imaging
- Spinal Diseases - epidemiology
- Spinal Diseases - pathology
- Thoracic Vertebrae - diagnostic imaging
- Thoracic Vertebrae - pathology