Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Mostert, JM; Romeijn, SR; Dibbets-Schneider, P; Rietbergen, DDD; Pereira, Arias-Bouda, LM; Götz, C; DiFranco, MD; Dimai, HP; Grootjans, W.
Inter-observer agreement of vertebral fracture assessment with dual-energy x-ray absorptiometry equipment.
Arch Osteoporos. 2021; 17(1):4
Doi: 10.1007/s11657-021-01046-w
Web of Science
PubMed
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- Co-Autor*innen der Med Uni Graz
- Dimai Hans Peter
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- Abstract:
- PURPOSE: To investigate the time and effort needed to perform vertebral morphometry, as well as inter-observer agreement for identification of vertebral fractures on vertebral fracture assessment (VFA) images. METHODS: Ninety-six images were retrospectively selected, and three radiographers independently performed semi-automatic 6-point morphometry. Fractures were identified and graded using the Genant classification. Time needed to annotate each image was recorded, and reader fatigue was assessed using a modified Simulator Sickness Questionnaire (SSQ). Inter-observer agreement was assessed per-patient and per-vertebra for detecting fractures of all grades (grades 1-3) and for grade 2 and 3 fractures using the kappa statistic. Variability in measured vertebral height was evaluated using the intraclass correlation coefficient (ICC). RESULTS: Per-patient agreement was 0.59 for grades 1-3 fracture detection, and 0.65 for grades 2-3 only. Agreement for per-vertebra fracture classification was 0.92. Vertebral height measurements had an ICC of 0.96. Time needed to annotate VFA images ranged between 91 and 540 s, with a mean annotation time of 259 s. Mean SSQ scores were significantly lower at the start of a reading session (1.29; 95% CI: 0.81-1.77) compared to the end of a session (3.25; 95% CI: 2.60-3.90; p < 0.001). CONCLUSION: Agreement for detection of patients with vertebral fractures was only moderate, and vertebral morphometry requires substantial time investment. This indicates that there is a potential benefit for automating VFA, both in improving inter-observer agreement and in decreasing reading time and burden on readers.
- Find related publications in this database (using NLM MeSH Indexing)
- Absorptiometry, Photon - administration & dosage
- Humans - administration & dosage
- Lumbar Vertebrae - injuries
- Observer Variation - administration & dosage
- Retrospective Studies - administration & dosage
- Spinal Fractures - diagnostic imaging
- Thoracic Vertebrae - administration & dosage
- Find related publications in this database (Keywords)
- Vertebral fracture assessment
- Dual-energy x-ray absorptiometry
- Vertebral morphometry
- Inter-observer agreement
- Osteoporosis