Back to Search
Start Over
Acetabular coverage differs between standing and supine positions: model-based assessment of low-dose biplanar radiographs and comparison with CT
- Source :
- European Radiology. 29:5691-5699
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- To evaluate the feasibility of 2D and 3D acetabular coverage assessments based on low-dose biplanar radiographs (BPR) in comparison with CT, and to demonstrate the influence of weight-bearing position (WBP) on anterior and posterior acetabular coverages. Fifty patients (21 females, 29 males) underwent standing BPR and supine CT of the pelvis. Using dedicated software, BPR-based calculations of anterior and posterior 2D coverages and anterior, posterior, and global 3D coverages were performed in standardized anterior pelvic plane (APP) and WBP. CT-based anterior and posterior 2D coverages and global 3D coverage was calculated in APP and compared with BPR-based data. Statistics included intraclass correlation coefficients (ICC) and Bland-Altman plots. Mean anterior 2D coverage was 21.2% (standard deviation, ± 7.4%) for BPR and 23.8% (± 8.4%) for CT (p = 0.226). Mean posterior 2D coverage was 54.2% (± 9.8%) for BPR and 61.7% (± 9.7%) for CT (p = 0.001). Mean global 3D coverage was 46.5% (± 3.0%) for BPR and 45.6% (± 3.6%) for CT (p = 0.215). The inter-method reliability between CT and BPR and inter-reader reliability for BPR-based measurements were very good for all measurement (all ICC > 0.8). Based on BPR, mean anterior and posterior 3D coverages were 20.5% and 26.0% in WBP and APP, while 25 patients increased anterior and 24 patients increased posterior 3D coverage from APP to WBP with a relative change of coverage of up to 11.9% and 10.0%, respectively. 2D and 3D acetabular coverages can be calculated with very good reliability based on BPR. The impact of standing position on acetabular coverage can be quantified with BPR on an individual basis. • 2D and 3D acetabular coverages can be calculated with very good reliability based on biplanar radiographs in comparison with CT. • The impact of standing position on anterior and posterior acetabular coverages can be quantified with BPR on an individual basis.
- Subjects :
- Male
medicine.medical_specialty
Supine position
Intraclass correlation
Radiography
610 Medicine & health
medicine.disease_cause
030218 nuclear medicine & medical imaging
Weight-bearing
03 medical and health sciences
Imaging, Three-Dimensional
0302 clinical medicine
Supine Position
medicine
2741 Radiology, Nuclear Medicine and Imaging
Humans
Radiology, Nuclear Medicine and imaging
Pelvis
Aged
Aged, 80 and over
business.industry
Low dose
Reproducibility of Results
Acetabulum
General Medicine
Anterior pelvic plane
Middle Aged
medicine.anatomical_structure
030220 oncology & carcinogenesis
Feasibility Studies
10046 Balgrist University Hospital, Swiss Spinal Cord Injury Center
Female
Hip Joint
Radiology
Joint Diseases
Tomography, X-Ray Computed
business
Subjects
Details
- ISSN :
- 14321084 and 09387994
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- European Radiology
- Accession number :
- edsair.doi.dedup.....f8152385abdbdd5305f9e21f7d42b0c3
- Full Text :
- https://doi.org/10.1007/s00330-019-06136-5