Linked Life Data

18003287

Source:http://linkedlifedata.com/resource/pubmed/id/18003287

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2007-11-16
pubmed:abstractText
Musculoskeletal applications of MRI are increasing rapidly but a major challenge for researchers is the ability to efficiently and accurately segment structures of interest, such as bone, which is typically required to perform further quantitative analyses. Manual tracing is extremely time consuming and introduces problematic user variability. Automated segmentation is usually preferred; however, the accuracy and robustness of current methods still suffer from significant limitations. In this paper, we propose a novel approach for simplifying such segmentation tasks by optimizing MR protocols specifically for bone data acquisition. We present multi-contrast MR bone data acquired using short-TR T1W and fat suppression scans and demonstrate how this data can be used within an automated segmentation framework in order to improve accuracy of bone segmentation. Validation was performed on knee joint data with quantitative segmentation results on our multi-contrast data showing superior performance compared to results obtained using conventional single-contrast data. Improvements in contrast to noise ratio of 39.24 and in sensitivity and specificity of 4.09% and 4.17%, respectively, for the tibia, and 4.4% and 5.74% for the femur, were achieved.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
1557-170X
pubmed:author
pubmed:issnType
Print
pubmed:volume
2007
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5620-3
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Multi-contrast MR for enhanced bone imaging and segmentation.
pubmed:affiliation
Department of Electrical & Computer Engineering, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
pubmed:publicationType
Journal Article