Please use this identifier to cite or link to this item: https://observatorio.fm.usp.br/handle/OPI/1037
Title: Texture analysis of high resolution MRI allows discrimination between febrile and afebrile initial precipitating injury in mesial temporal sclerosis
Authors: ALEGRO, Maryana de CarvalhoSILVA, Alexandre ValottaBANDO, Silvia YumiLOPES, Roseli de DeusCASTRO, Luiz Henrique Martins deHUNGTSU, WenMOREIRA-FILHO, Carlos AlbertoAMARO JR., Edson
Citation: MAGNETIC RESONANCE IN MEDICINE, v.68, n.5, p.1647-1653, 2012
Abstract: A computational pipeline combining texture analysis and pattern classification algorithms was developed for investigating associations between high-resolution MRI features and histological data. This methodology was tested in the study of dentate gyrus images of sclerotic hippocampi resected from refractory epilepsy patients. Images were acquired using a simple surface coil in a 3.0T MRI scanner. All specimens were subsequently submitted to histological semiquantitative evaluation. The computational pipeline was applied for classifying pixels according to: a) dentate gyrus histological parameters and b) patients' febrile or afebrile initial precipitating insult history. The pipeline results for febrile and afebrile patients achieved 70% classification accuracy, with 78% sensitivity and 80% specificity [area under the reader observer characteristics (ROC) curve: 0.89]. The analysis of the histological data alone was not sufficient to achieve significant power to separate febrile and afebrile groups. Interesting enough, the results from our approach did not show significant correlation with histological parameters (which per se were not enough to classify patient groups). These results showed the potential of adding computational texture analysis together with classification methods for detecting subtle MRI signal differences, a method sufficient to provide good clinical classification. A wide range of applications of this pipeline can also be used in other areas of medical imaging. Magn Reson Med, 2012. (c) 2012 Wiley Periodicals, Inc.
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Artigos e Materiais de Revistas Científicas - FM/MDR
Departamento de Radiologia - FM/MDR

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Departamento de Pediatria - FM/MPE

Artigos e Materiais de Revistas Científicas - HC/ICHC
Instituto Central - HC/ICHC

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Instituto de Radiologia - HC/InRad

Artigos e Materiais de Revistas Científicas - LIM/36
LIM/36 - Laboratório de Pediatria Clínica

Artigos e Materiais de Revistas Científicas - LIM/44
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia


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