| Is there functional vascular information in anatomical MR sequences? A preliminary in vivo study. | |
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MedLine Citation:
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PMID: 16761847 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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According to the type of sequences used, either morphological or dynamic functional study can be performed using magnetic resonance imaging (MRI). The aim of this study is to find out if vascular information found, in dynamic MR sequences, already exists in anatomical MR sequences in the particular case of Legg-Calvé-Perthes disease (LCPD). LCPD is due to a loss of circulation to the femoral head in a growing child resulting in avascular necrosis and leading to possible distortion of size and shape of the proximal femur. MRI acquisitions consist in performing two anatomical sequences and one dynamic sequence with a gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) injection. Five new parametric images characterizing hyper- and hypo-vascularized areas are computed from the dynamic MR sequence. For each new image, the two corresponding anatomical images are found and registered. Then, four types of regions of interest (ROIs) are extracted: healthy hyper- and hypo-vascularized areas and pathological hyper- and hypo-vascularized areas. First-order statistical parameters and texture parameters (Haralick's method, run length method, fractal parameters, autoregressive factors and Laws' texture energy method) are computed in each ROI. Then, a statistical study based on a T test is performed. Results show that some parameters could discriminate the four ROI types. Hence, dynamic vascular image and intrinsic anatomical image characteristics seem to be correlated. Finally, the disease can be evaluated with objective parameters using only anatomical sequences. |
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Authors:
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Renaud Winzenrieth; Isabelle Claude; Marie-Christine Hobatho; Guy Sebag |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: IEEE transactions on bio-medical engineering Volume: 53 ISSN: 0018-9294 ISO Abbreviation: IEEE Trans Biomed Eng Publication Date: 2006 Jun |
Date Detail:
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Created Date: 2006-06-09 Completed Date: 2006-07-07 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0012737 Medline TA: IEEE Trans Biomed Eng Country: United States |
Other Details:
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Languages: eng Pagination: 1190-5 Citation Subset: IM |
Affiliation:
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Laboratoire de Biomécanique et Génie Biomédical, UMR CNRS 6600, UTC, Compiégne, France. renaud.winzenrieth@utc.fr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Child Child, Preschool Feasibility Studies Femur Head / blood supply*, pathology* Humans Image Enhancement / methods* Image Interpretation, Computer-Assisted / methods* Legg-Perthes Disease / diagnosis* Magnetic Resonance Imaging / methods* Subtraction Technique* |
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