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Lookup NU author(s): Dr Emma Ritchie
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Computer-generated images were used to assess image processing software employed in the radiographic evaluation of penetration in total hip replacement. The images were corrupted using Laplacian noise and smoothed to simulate different modulation transfer functions in a range associated with hospital digital radiographic systems. With no corruption, the penetration depth measurements were both precise and accurate. However, as the noise increased so did the inaccuracy and imprecision to levels that may make changes in the penetration observed clinically difficult to discern between follow-up assessments. Simulated rotation of the wire marker produced significant bias in the measured penetration depth. The use of these simulated radiographs allows the evaluation of the software used to process the digital images alone rather than the whole measurement system. © 2005 IPEM. Published by Elsevier Ltd. All rights reserved.
Author(s): Kennard E, Wilcox RK, Hall RM
Publication type: Article
Publication status: Published
Journal: Medical Engineering and Physics
Print publication date: 01/05/2006
Online publication date: 24/08/2005
ISSN (print): 1350-4533
ISSN (electronic): 1873-4030
Publisher: Elsevier Ltd
PubMed id: 16122967
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