A complete-pelvis segmentation framework for image-free total hip arthroplasty (THA): methodology and clinical study
Background: Complete-pelvis segmentation in antero-posterior pelvic radiographs is required to create a patient-specific three-dimensional pelvis model for surgical planning and postoperative assessment in image-free navigation of total hip arthroplasty. Methods: A fast and robust framework for accu...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2015
|
| In: |
The international journal of medical robotics and computer assisted surgery
Year: 2014, Jahrgang: 11, Heft: 2, Pages: 166-180 |
| ISSN: | 1478-596X |
| DOI: | 10.1002/rcs.1619 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1002/rcs.1619 Verlag, Volltext: http://onlinelibrary.wiley.com/doi/10.1002/rcs.1619/abstract 
|
| Verfasserangaben: | Weiguo Xie, Jochen Franke, Cheng Chen, Paul A. Grützner, Steffen Schumann, Lutz-P. Nolte, Guoyan Zheng |
| Zusammenfassung: | Background: Complete-pelvis segmentation in antero-posterior pelvic radiographs is required to create a patient-specific three-dimensional pelvis model for surgical planning and postoperative assessment in image-free navigation of total hip arthroplasty. Methods: A fast and robust framework for accurately segmenting the complete pelvis is presented, consisting of two consecutive modules. In the first module, a three-stage method was developed to delineate the left hemi-pelvis based on statistical appearance and shape models. To handle complex pelvic structures, anatomy-specific information processing techniques were employed. As the input to the second module, the delineated left hemi-pelvis was then reflected about an estimated symmetry line of the radiograph to initialize the right hemi-pelvis segmentation. The right hemi-pelvis was segmented by the same three-stage method. Results: Two experiments conducted on respectively 143 and 40 AP radiographs demonstrated a mean segmentation accuracy of 1.61±0.68 mm. A clinical study to investigate the postoperative assessment of acetabular cup orientations based on the proposed framework revealed an average accuracy of 1.2°±0.9° and 1.6°±1.4° for anteversion and inclination, respectively. Delineation of each radiograph costs less than one minute. Conclusions: Despite further validation needed, the preliminary results implied the underlying clinical applicability of the proposed framework for image-free THA. Copyright © 2014 John Wiley & Sons, Ltd. |
|---|---|
| Beschreibung: | Published online: 26 September 2014 Gesehen am 06.04.2017 |
| Beschreibung: | Online Resource |
| ISSN: | 1478-596X |
| DOI: | 10.1002/rcs.1619 |