Memorias de investigación
Ponencias en congresos:
Atlas-free Brain Tissue Segmentation Using a Single T1-weighted MRI Acquisition
Año:2012
Áreas de investigación
  • Ciencias naturales y ciencias de la salud,
  • Biomedicina,
  • Ingenierías,
  • Tecnología electrónica y de las comunicaciones
Datos
Descripción
Many studies investigating the aging brain or disease-induced brain alterations rely on accurate and reproducible brain tissue segmentation. Being a preliminary processing step prior to the segmentation, reliableskull-stripping ? the removal ofnon-brain tissue ? is also c rucial for all later image assessment. Typically, segmentation algorithms rely on an atlas i.e. pre-segmented template data. Brain morphology, however, differs considerably depending on age, sex and race. In addition, diseased brains may deviate significantly from the atlas information typically gained from healthy volunteers. The imposed prior atlas information can thus lead to degradation of segmentation results. The recently introduced MP2RAGE sequence provides a bias-free T1 contrast with heavily reduced T2*- and PD-weighting compared to the standard MP-RAGE [1]. To this end, it acquires two image volumes at different inversion times in one acquisition, combining them to a ?uniform?, i.e. homogenous image. In this work, we exploit the advantageous contrast properties of the MP2RAGE and combine it with a Dixon (i.e. fat-water separation) approach. The information gained by the additional fat image of the head considerably improves the skull-stripping outcome [2]. In conjunction with the pure T1 contrast of the MP2RAGE uniform image, we achieve robust skull-stripping and brain tissue segmentation without the use of an atlas
Internacional
Si
Nombre congreso
International Society for Magnetic Resonance in Medicine (ISMRM 2012)
Tipo de participación
960
Lugar del congreso
Melbourne, Australia
Revisores
Si
ISBN o ISSN
1545-4428
DOI
Fecha inicio congreso
05/05/2012
Fecha fin congreso
11/05/2012
Desde la página
753
Hasta la página
753
Título de las actas
Proceedings of the International Society for Magnetic Resonance in Medicine
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: T Kober Advanced Clinical Imaging Technology, Siemens Heal thcare Sector IM
  • Autor: A Roche Advanced Clinical Imaging Technology, Siemens Heal thcare Sector IM
  • Autor: Oscar Esteban Sanz-Dranguet UPM
  • Autor: G Gorthi Signal Processing Laboratory (LTS5), École Polytechnique Fédérale de Lausanne, Switzerland
  • Autor: D Ribes ARTORG Center for Computer Aided Surge ry, University of Bern, Switzerland
  • Autor: M Bach-Cuadra Centre Hospitalier Universitaire Vaudois and University of Lausanne, Switzerland,
  • Autor: R Mauli Centre Hospitalier Universitaire Vaudois and University of Lausanne, Switzerland,
  • Autor: G Krueger Advanced Clinical Imaging Technology, Siemens Heal thcare Sector IM
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Tecnología de imágenes biomédicas
  • Departamento: Ingeniería Electrónica