Improved radiograph measurement inter-observer reliability by use of statistical shape models.
Pre- and post-operative radiographs of patients undergoing joint arthroplasty are often examined for a variety of purposes including preoperative planning and patient assessment. This work examines the feasibility of using active shape models (ASM) to semi-automate measurements from post-operative r...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Elsevier
2012
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| _version_ | 1797084325449039872 |
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| author | Pegg, E Mellon, S Salmon, G Alvand, A Pandit, H Murray, D Gill, H |
| author_facet | Pegg, E Mellon, S Salmon, G Alvand, A Pandit, H Murray, D Gill, H |
| author_sort | Pegg, E |
| collection | OXFORD |
| description | Pre- and post-operative radiographs of patients undergoing joint arthroplasty are often examined for a variety of purposes including preoperative planning and patient assessment. This work examines the feasibility of using active shape models (ASM) to semi-automate measurements from post-operative radiographs for the specific case of the Oxford™ Unicompartmental Knee. Measurements of the proximal tibia and the position of the tibial tray were made using the ASM model and manually. Data were obtained by four observers and one observer took four sets of measurements to allow assessment of the inter- and intra-observer reliability, respectively. The parameters measured were the tibial tray angle, the tray overhang, the tray size, the sagittal cut position, the resection level and the tibial width. Results demonstrated improved reliability (average of 27% and 11.2% increase for intra- and inter-reliability, respectively) and equivalent accuracy (p>0.05 for compared data values) for all of the measurements using the ASM model, with the exception of the tray overhang (p=0.0001). Less time (15s) was required to take measurements using the ASM model compared with manual measurements, which was significant. These encouraging results indicate that semi-automated measurement techniques could improve the reliability of radiographic measurements. |
| first_indexed | 2024-03-07T01:53:55Z |
| format | Journal article |
| id | oxford-uuid:9b127c54-7b08-4d96-b928-0aca075e921a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:53:55Z |
| publishDate | 2012 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:9b127c54-7b08-4d96-b928-0aca075e921a2022-03-27T00:26:02ZImproved radiograph measurement inter-observer reliability by use of statistical shape models.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9b127c54-7b08-4d96-b928-0aca075e921aEnglishSymplectic Elements at OxfordElsevier2012Pegg, EMellon, SSalmon, GAlvand, APandit, HMurray, DGill, HPre- and post-operative radiographs of patients undergoing joint arthroplasty are often examined for a variety of purposes including preoperative planning and patient assessment. This work examines the feasibility of using active shape models (ASM) to semi-automate measurements from post-operative radiographs for the specific case of the Oxford™ Unicompartmental Knee. Measurements of the proximal tibia and the position of the tibial tray were made using the ASM model and manually. Data were obtained by four observers and one observer took four sets of measurements to allow assessment of the inter- and intra-observer reliability, respectively. The parameters measured were the tibial tray angle, the tray overhang, the tray size, the sagittal cut position, the resection level and the tibial width. Results demonstrated improved reliability (average of 27% and 11.2% increase for intra- and inter-reliability, respectively) and equivalent accuracy (p>0.05 for compared data values) for all of the measurements using the ASM model, with the exception of the tray overhang (p=0.0001). Less time (15s) was required to take measurements using the ASM model compared with manual measurements, which was significant. These encouraging results indicate that semi-automated measurement techniques could improve the reliability of radiographic measurements. |
| spellingShingle | Pegg, E Mellon, S Salmon, G Alvand, A Pandit, H Murray, D Gill, H Improved radiograph measurement inter-observer reliability by use of statistical shape models. |
| title | Improved radiograph measurement inter-observer reliability by use of statistical shape models. |
| title_full | Improved radiograph measurement inter-observer reliability by use of statistical shape models. |
| title_fullStr | Improved radiograph measurement inter-observer reliability by use of statistical shape models. |
| title_full_unstemmed | Improved radiograph measurement inter-observer reliability by use of statistical shape models. |
| title_short | Improved radiograph measurement inter-observer reliability by use of statistical shape models. |
| title_sort | improved radiograph measurement inter observer reliability by use of statistical shape models |
| work_keys_str_mv | AT pegge improvedradiographmeasurementinterobserverreliabilitybyuseofstatisticalshapemodels AT mellons improvedradiographmeasurementinterobserverreliabilitybyuseofstatisticalshapemodels AT salmong improvedradiographmeasurementinterobserverreliabilitybyuseofstatisticalshapemodels AT alvanda improvedradiographmeasurementinterobserverreliabilitybyuseofstatisticalshapemodels AT pandith improvedradiographmeasurementinterobserverreliabilitybyuseofstatisticalshapemodels AT murrayd improvedradiographmeasurementinterobserverreliabilitybyuseofstatisticalshapemodels AT gillh improvedradiographmeasurementinterobserverreliabilitybyuseofstatisticalshapemodels |