Validation of microfocus computed tomography in the evaluation of bone implant specimens
Validation of microfocus computed tomography in the evaluation of bone implant specimens
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DOI：
10.1111/j.1708-8208.2005.tb00051.x
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发表时间：
2005-01-01
影响因子：
3.6
通讯作者：
Naert, IE
中科院分区：
文献类型：
--
作者：
Stoppie, N;van der Waerden, JP;Naert, IE
Background: Microfocus computed tomography (mu CT) is an emerging technique owing to its speed, full three-dimensional information, and nondestructive properties.Purpose: The aim of this study was to explore the efficacy of a mu CT system (Philips HOMX 161(TM), Philips Medical Systems GmbH, Hamburg, Germany) for visualization of the bone structure around screw-type titanium implants by comparing mu CT images with their histologic homologues.Materials and Methods: Eight screw-type titanium implants were placed in the femoral condyles of two goats. After the excised implant-bone specimens were embedded in resin, three-dimensional mu CT of the excised implant and bone specimens was performed. Histologic sections were subsequently made. A total of 150 histologic sections were matched with mu CT images.Results: Bone trabeculae were clearly visible on the mu CT scans. However, bone close to the implant or present in the apical surface features of the implant could not be detected. The overall matching between mu CT scans (slices) and the histologic sections was 89%.Conclusion: Investigation of trabecular bone around titanium implants by mu CT can be considered highly reliable for determining trabecular bone parameters, with the exception of measuring direct bone-to-implant contact.
