Imperial College London

Angela Kedgley

Faculty of EngineeringDepartment of Bioengineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 0747a.kedgley Website

 
 
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Location

 

514BBuilding E - Sir Michael UrenWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kedgley:2012:10.1120/jacmp.v13i1.3441,
author = {Kedgley, AE and Fox, A-MV and Jenkyn, TR},
doi = {10.1120/jacmp.v13i1.3441},
journal = {JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS},
pages = {197--204},
title = {Image intensifier distortion correction for fluoroscopic RSA: the need for independent accuracy assessment},
url = {http://dx.doi.org/10.1120/jacmp.v13i1.3441},
volume = {13},
year = {2012}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Fluoroscopic images suffer from multiple modes of image distortion. Therefore, the purpose of this study was to compare the effects of correction using a range of twodimensional polynomials and a global approach. The primary measure of interest was the average error in the distances between four beads of an accuracy phantom, as measured using RSA. Secondary measures of interest were the root mean squared errors of the fit of the chosen polynomial to the grid of beads used for correction, and the errors in the corrected distances between the points of the grid in a second position. Based upon the twodimensional measures, a polynomial of order three in the axis of correction and two in the perpendicular axis was preferred. However, based upon the RSA reconstruction, a polynomial of order three in the axis of correction and one in the perpendicular axis was preferred. The use of a calibration frame for these threedimensional applications most likely tempers the effects of distortion. This study suggests that distortion correction should be validated for each of its applications with an independent “gold standard” phantom.
AU - Kedgley,AE
AU - Fox,A-MV
AU - Jenkyn,TR
DO - 10.1120/jacmp.v13i1.3441
EP - 204
PY - 2012///
SN - 1526-9914
SP - 197
TI - Image intensifier distortion correction for fluoroscopic RSA: the need for independent accuracy assessment
T2 - JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS
UR - http://dx.doi.org/10.1120/jacmp.v13i1.3441
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000302465800017&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/59345
VL - 13
ER -