Source:http://linkedlifedata.com/resource/pubmed/id/20425981
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
Pt 1
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| pubmed:dateCreated |
2010-4-29
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| pubmed:abstractText |
This paper presents a technique to recover dynamic 3D vascular morphology from a single 3D rotational X-ray angiography acquisition. The dynamic morphology corresponding to a canonical cardiac cycle is represented via a 4D B-spline based spatiotemporal deformation. Such deformation is estimated by simultaneously matching the forward projections of a sequence of the temporally deformed 3D reference volume to the entire 2D measured projection sequence. A joint use of two acceleration strategies is also proposed: semi-precomputation of forward projections and registration metric computation based on a narrow-band region-of-interest. Digital and physical phantoms of pulsating cerebral aneurysms have been used for evaluation. Accurate estimation has been obtained in recovering sub-voxel pulsation, even from images with substantial intensity inhomogeneity. Results also demonstrate that the acceleration strategies can reduce memory consumption and computational time without degrading the performance.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:author | |
| pubmed:volume |
12
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
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| pubmed:pagination |
140-7
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| pubmed:meshHeading |
pubmed-meshheading:20425981-Algorithms,
pubmed-meshheading:20425981-Artificial Intelligence,
pubmed-meshheading:20425981-Cardiac-Gated Imaging Techniques,
pubmed-meshheading:20425981-Cerebral Angiography,
pubmed-meshheading:20425981-Humans,
pubmed-meshheading:20425981-Imaging, Three-Dimensional,
pubmed-meshheading:20425981-Intracranial Aneurysm,
pubmed-meshheading:20425981-Movement,
pubmed-meshheading:20425981-Pattern Recognition, Automated,
pubmed-meshheading:20425981-Radiographic Image Enhancement,
pubmed-meshheading:20425981-Radiographic Image Interpretation, Computer-Assisted,
pubmed-meshheading:20425981-Reproducibility of Results,
pubmed-meshheading:20425981-Rotation,
pubmed-meshheading:20425981-Sensitivity and Specificity,
pubmed-meshheading:20425981-Subtraction Technique,
pubmed-meshheading:20425981-Tomography, X-Ray Computed
|
| pubmed:year |
2009
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| pubmed:articleTitle |
Estimating continuous 4D wall motion of cerebral aneurysms from 3D rotational angiography.
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| pubmed:affiliation |
Center for Computational Imaging & Simulation Technologies in Biomedicine (CISTIB), Universitat Pompeu Fabra, Barcelona, Spain.
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| pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|