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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
11
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pubmed:dateCreated |
2005-11-10
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pubmed:abstractText |
We present a new algorithm to register 3-D preoperative magnetic resonance (MR) images to intraoperative MR images of the brain which have undergone brain shift. This algorithm relies on a robust estimation of the deformation from a sparse noisy set of measured displacements. We propose a new framework to compute the displacement field in an iterative process, allowing the solution to gradually move from an approximation formulation (minimizing the sum of a regularization term and a data error term) to an interpolation formulation (least square minimization of the data error term). An outlier rejection step is introduced in this gradual registration process using a weighted least trimmed squares approach, aiming at improving the robustness of the algorithm. We use a patient-specific model discretized with the finite element method in order to ensure a realistic mechanical behavior of the brain tissue. To meet the clinical time constraint, we parallelized the slowest step of the algorithm so that we can perform a full 3-D image registration in 35 s (including the image update time) on a heterogeneous cluster of 15 personal computers. The algorithm has been tested on six cases of brain tumor resection, presenting a brain shift of up to 14 mm. The results show a good ability to recover large displacements, and a limited decrease of accuracy near the tumor resection cavity.
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pubmed:grant |
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-10048851,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-10349732,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-10534053,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-11063099,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-11169819,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-11403198,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-11437112,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-11440463,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-12045001,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-12426109,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-12494947,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-12575879,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-12670015,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-15567708,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-2413361,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-9280232,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-9733307,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-9766300,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16279079-9873920
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Nov
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pubmed:issn |
0278-0062
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
24
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1417-27
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pubmed:dateRevised |
2011-8-1
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pubmed:meshHeading |
pubmed-meshheading:16279079-Algorithms,
pubmed-meshheading:16279079-Artificial Intelligence,
pubmed-meshheading:16279079-Brain Neoplasms,
pubmed-meshheading:16279079-Computer Simulation,
pubmed-meshheading:16279079-Elasticity,
pubmed-meshheading:16279079-Humans,
pubmed-meshheading:16279079-Image Enhancement,
pubmed-meshheading:16279079-Image Interpretation, Computer-Assisted,
pubmed-meshheading:16279079-Imaging, Three-Dimensional,
pubmed-meshheading:16279079-Intraoperative Care,
pubmed-meshheading:16279079-Magnetic Resonance Imaging,
pubmed-meshheading:16279079-Models, Biological,
pubmed-meshheading:16279079-Motion,
pubmed-meshheading:16279079-Neuronavigation,
pubmed-meshheading:16279079-Reproducibility of Results,
pubmed-meshheading:16279079-Sensitivity and Specificity,
pubmed-meshheading:16279079-Subtraction Technique,
pubmed-meshheading:16279079-Surgery, Computer-Assisted,
pubmed-meshheading:16279079-User-Computer Interface
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pubmed:year |
2005
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pubmed:articleTitle |
Robust nonrigid registration to capture brain shift from intraoperative MRI.
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pubmed:affiliation |
Epidaure Research Project, INRIA Sophia Antipolis, 06902 Sophia Antipolis Cedex, France. olivier.clatz@sophia.inria.fr
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't,
Research Support, N.I.H., Extramural
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