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Published in: International Journal of Computer Assisted Radiology and Surgery 5/2017

06-02-2017 | Erratum

Erratum to: Central X-ray beam correction of radiographic acetabular cup measurement after THA: an experimental study

Authors: T. Schwarz, M. Weber, M. Wörner, T. Renkawitz, J. Grifka, B. Craiovan

Published in: International Journal of Computer Assisted Radiology and Surgery | Issue 5/2017

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Excerpt

We regret having misinterpreted the accuracy of Dr. Derbyshire’s method in our discussion section. In his study of 2008, he used a 3-D CAD model to simulate ‘X-ray’ radiographs with a central beam offset of 110 mm medial and 45 mm inferior to the cup opening. Anteversion was corrected ‘exactly’, and the inclination error was less than \(0.16{^{\circ }}\). We wrongly reported that ‘Derbyshire validated his method virtually and showed a reduced error range of \(-0.4{^{\circ }}\) to \(0.8{^{\circ }}\)’. De facto, Dr. Derbyshire investigated a potential error, if the X-ray target point of the central beam is mistakenly assumed to be 10 mm from its true position. The potential error was \(\pm 0.4{^{\circ }}\) and is not associated with the formulae. However, our study was not designed to compare our method with that developed by Dr. Derbyshire; therefore, our results and the main conclusion of our study remain unaffected. …

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Metadata
Title
Erratum to: Central X-ray beam correction of radiographic acetabular cup measurement after THA: an experimental study
Authors
T. Schwarz
M. Weber
M. Wörner
T. Renkawitz
J. Grifka
B. Craiovan
Publication date
06-02-2017
Publisher
Springer International Publishing
Published in
International Journal of Computer Assisted Radiology and Surgery / Issue 5/2017
Print ISSN: 1861-6410
Electronic ISSN: 1861-6429
DOI
https://doi.org/10.1007/s11548-017-1525-5

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