Comprehensive Brain MRI Segmentation in High Risk Preterm Newborns
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{"title"=>"Comprehensive Brain MRI Segmentation in High Risk Preterm Newborns", "type"=>"journal", "authors"=>[{"first_name"=>"Xintian", "last_name"=>"Yu", "scopus_author_id"=>"36899300400"}, {"first_name"=>"Yanjie", "last_name"=>"Zhang", "scopus_author_id"=>"36899230000"}, {"first_name"=>"Robert E.", "last_name"=>"Lasky", "scopus_author_id"=>"7005992397"}, {"first_name"=>"Sushmita", "last_name"=>"Datta", "scopus_author_id"=>"7401497977"}, {"first_name"=>"Nehal A.", "last_name"=>"Parikh", "scopus_author_id"=>"7006642541"}, {"first_name"=>"Ponnada A.", "last_name"=>"Narayana", "scopus_author_id"=>"35275588200"}], "year"=>2010, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "scopus"=>"2-s2.0-78249244791", "pui"=>"359945892", "doi"=>"10.1371/journal.pone.0013874", "isbn"=>"1932-6203", "sgr"=>"78249244791", "pmid"=>"21079730"}, "id"=>"2da63958-6e92-3228-8680-45d77cce2ff5", "abstract"=>"Most extremely preterm newborns exhibit cerebral atrophy/growth disturbances and white matter signal abnormalities on MRI at term-equivalent age. MRI brain volumes could serve as biomarkers for evaluating the effects of neonatal intensive care and predicting neurodevelopmental outcomes. This requires detailed, accurate, and reliable brain MRI segmentation methods. We describe our efforts to develop such methods in high risk newborns using a combination of manual and automated segmentation tools. After intensive efforts to accurately define structural boundaries, two trained raters independently performed manual segmentation of nine subcortical structures using axial T2-weighted MRI scans from 20 randomly selected extremely preterm infants. All scans were re-segmented by both raters to assess reliability. High intra-rater reliability was achieved, as assessed by repeatability and intra-class correlation coefficients (ICC range: 0.97 to 0.99) for all manually segmented regions. Inter-rater reliability was slightly lower (ICC range: 0.93 to 0.99). A semi-automated segmentation approach was developed that combined the parametric strengths of the Hidden Markov Random Field Expectation Maximization algorithm with non-parametric Parzen window classifier resulting in accurate white matter, gray matter, and CSF segmentation. Final manual correction of misclassification errors improved accuracy (similarity index range: 0.87 to 0.89) and facilitated objective quantification of white matter signal abnormalities. The semi-automated and manual methods were seamlessly integrated to generate full brain segmentation within two hours. This comprehensive approach can facilitate the evaluation of large cohorts to rigorously evaluate the utility of regional brain volumes as biomarkers of neonatal care and surrogate endpoints for neurodevelopmental outcomes.", "link"=>"http://www.mendeley.com/research/comprehensive-brain-mri-segmentation-high-risk-preterm-newborns-2", "reader_count"=>27, "reader_count_by_academic_status"=>{"Unspecified"=>2, "Professor > Associate Professor"=>2, "Researcher"=>6, "Student > Ph. D. Student"=>9, "Student > Master"=>3, "Other"=>2, "Student > Bachelor"=>2, "Lecturer > Senior Lecturer"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>2, "Professor > Associate Professor"=>2, "Researcher"=>6, "Student > Ph. D. Student"=>9, "Student > Master"=>3, "Other"=>2, "Student > Bachelor"=>2, "Lecturer > Senior Lecturer"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>5, "Engineering"=>3, "Mathematics"=>2, "Medicine and Dentistry"=>8, "Agricultural and Biological Sciences"=>1, "Neuroscience"=>1, "Physics and Astronomy"=>1, "Psychology"=>3, "Computer Science"=>3}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>3}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>8}, "Neuroscience"=>{"Neuroscience"=>1}, "Physics and Astronomy"=>{"Physics and Astronomy"=>1}, "Psychology"=>{"Psychology"=>3}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>1}, "Computer Science"=>{"Computer Science"=>3}, "Mathematics"=>{"Mathematics"=>2}, "Unspecified"=>{"Unspecified"=>5}}, "reader_count_by_country"=>{"Netherlands"=>1, "United Kingdom"=>1}, "group_count"=>2}

Scopus | Further Information

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Figshare

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