Multichannel CT Imaging of Orthopedic Hardware and Implants
| Autor: | J. Andrew Parr, William N. Capello, Robert H. Choplin, Kenneth A. Buckwalter |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
medicine.medical_specialty
Artifact (error) Knee Joint Orthopedic Equipment Shoulder Joint business.industry medicine.medical_treatment Prostheses and Implants equipment and supplies Prosthesis Visualization Orthopedic surgery medicine Humans Equipment Failure Hip Joint Radiology Nuclear Medicine and imaging Orthopedics and Sports Medicine Tomography Ct imaging Tomography X-Ray Computed business Orthopedic devices Computer hardware Reduction (orthopedic surgery) |
| Zdroj: | Seminars in Musculoskeletal Radiology. 10:086-097 |
| ISSN: | 1098-898X 1089-7860 |
| DOI: | 10.1055/s-2006-934219 |
| Popis: | The introduction of multichannel CT scanners provides both radiologists and surgeons with a new tool to image patients with orthopedic hardware. The key parameters that have made it possible to image the implants and the surrounding bone with multichannel CT are the higher available technical factors (kVp and mAs) coupled with the ability to acquire thin slices over a large scan region. These properties make it possible to produce high-quality multiplanar reformations that facilitate visualization of the orthopedic device and the surrounding bone. An important consideration for multichannel CT imaging of hardware is the reduction of cone beam artifacts caused by the geometry of multichannel CT scanners. This artifact is reduced by using a narrower x-ray beam collimation and a low pitch setting. This article discusses CT scan parameters and image postprocessing used at our institution and illustrates common clinical problems encountered when imaging implanted orthopedic devices. These include fracture healing, loosening of joint prostheses, evaluation of particle disease, and the use of CT for preoperative planning in revision arthroplasty. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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