Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Nonrigid Motion Compensation of Free Breathing Acquired Myocardial Perfusion Data
Year:2011
Research Areas
  • Medical equipment,
  • Electronic technology and of the communications,
  • Electronics engineering
Information
Abstract
In this work, we present a novel method to compensate the movement in images acquired during free breathing using first-pass gadolinium enhanced, myocardial perfusion magnetic resonance imaging (MRI). First, we use independent component analysis (ICA) to identify the optimal number of independent components (ICs) that separate the breathing motion from the intensity change induced by the contrast agent. Then, synthetic images are created by recombining the ICs, but other then in previously published work (Milles et al. 2008), we omit the component related to motion, and therefore, the resulting reference image series is free of motion. Motion compensation is then achieved by using a multi-pass non-rigid image registration scheme. We tested our method on 15 distinct image series (5 patients) consisting of 58 images each and we validated our method by comparing manually tracked intensity profiles of the myocardial sections to automatically generated ones before and after registration. The average correlation to the manually obtained curves before registration 0:89 ? 0:11 was increased to 0:98 ? 0:02.
International
Si
Congress
Bildverarbeitung für die Medizin 2011 (Algorithmen, Systeme, Anwendungen)
960
Place
Lübeck (Alemania)
Reviewers
Si
ISBN/ISSN
1431-472-X
10.1007/978-3-642-19335-4_19
Start Date
20/03/2011
End Date
22/03/2011
From page
84
To page
88
Bildverarbeitung für die Medizin 2011 (Algorithmen, Systeme, Anwendungen)
Participants
  • Autor: Gert Wöllny . (UPM)
  • Autor: Andres de Santos Lleo (UPM)
  • Autor: Maria Jesus Ledesma Carbayo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Tecnología de imágenes biomédicas
  • Centro o Instituto I+D+i: Centro de tecnología Biomédica CTB
  • Departamento: Ingeniería Electrónica
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