Accurate scaling of digital radiographs of the pelvis. A prospective trial of two methods
| Autor: | R. J. Pickard, S. Wimsey, G. Shaw |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
medicine.medical_specialty
Radiography medicine.medical_treatment Arthroplasty Replacement Hip Magnification Prosthesis Pelvis Medicine Humans Orthopedics and Sports Medicine Body Weights and Measures Prospective Studies Hip surgery business.industry Reproducibility of Results medicine.anatomical_structure Radiology Information Systems Hip bone Orthopedic surgery Calipers Radiographic Image Interpretation Computer-Assisted Surgery Radiology Hip Prosthesis business Nuclear medicine |
| Zdroj: | The Journal of bone and joint surgery. British volume. 88(11) |
| ISSN: | 0301-620X |
| Popis: | Magnification of anteroposterior radiographs of the pelvis is variable. To improve the accuracy of templating, reliable and radiographer-friendly methods of scaling are necessary. We assessed two methods of scaling digital radiographs of the pelvis: placing a coin of known diameter in the plane of interest between the patient’s thighs, and using a caliper to measure the bony width of the pelvis. A total of 39 patients who had recently undergone hemiarthroplasty of the hip or total hip replacement were enrolled in the study. The accuracy of the methods was assessed by comparing the actual diameter of the head of the prosthesis with the measured on-screen value. The coin method was within a mean of 1.12% (0% to 2.38%) of the actual measurement, the caliper group within 6.99% (0% to 16.67%). The coin method was significantly more accurate (p < 0.001). It was also reliable and radiographer friendly. We recommend it as the method of choice for scaling radiographs of the pelvis before hip surgery. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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