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Memorias de investigación
Communications at congresses:
Respiratory Motion Correction in PET with Super-Resolution Techniques and Non-Rigid Registration
Year:2007
Research Areas
  • Electronics engineering
Information
Abstract
Respiratory motion causes image degradation and artifacts in positron emission tomography (PET) images and constitutes an important source or error for the interpretation and proper quantization of thoracic and abdominal studies. Current work towards the correction of respiratory motion effects is mostly based on the acquisition of respiratory synchronized data which, on the other hand, leads to images with low statistics and therefore increased noise level. Super- Resolution (SR) techniques deal with how to combine several images into an enhanced high-resolution image, and in this work we study the application of SR to respiratory-gated PET images to produce a respiratory motion compensated image that incorporates the information provided by all the gated frames acquired. A B-spline based non-rigid registration algorithm is used for estimating the deformations among frames. We present preliminary results on a simulated PET/CT image sequence, corresponding to a thoracic study where a number of different sized nodular lesions were included inside the lungs. The resulting PET image allows better discrimination of the lesions and improved contrast, compared to each of the gated frames and to simple averaging of all the frames after registration.
International
Si
Congress
IEEE Nuclear Science Symposium
960
Place
Honolulu, Hawaii - USA
Reviewers
Si
ISBN/ISSN
978-1-4244-0923-5
Start Date
27/10/2007
End Date
03/11/2007
From page
To page
Participants
  • autor: F. Lamare (LaTIM, Brest, France)
  • Autor: José Luis Rubio Guivernau (UPM)
  • Autor: Maria Jesus Ledesma Carbayo (UPM)
  • Autor: Georgios Kontaxakis Antoniadis (UPM)
  • autor: D. Visvikis (LaTIM, Brest, France)
  • Autor: Juan Enrique Ortuño Fisac (UPM)
  • Autor: Pedro Guerra Gutierrez (UPM)
  • Autor: Andres de Santos Lleo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Tecnología de imágenes biomédicas
  • Departamento: Ingeniería Electrónica
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