Memorias de investigación
Communications at congresses:
A new geometrical method for 3D evaluation of non-rigid registration methods for radiotherapy in prostate cancer
Year:2008
Research Areas
  • Artificial intelligence,
  • Medicine
Information
Abstract
Three-dimensional conformal radiotherapy aims at delivering a high dose of radiation to the tumour, while sparing the surrounding normal tissue to a maximum extent. Image registration is an essential tool for monitoring radiation therapies, since allows morphological comparisons in presence of anatomic variations. The evaluation of non-rigid registration methods is very complicated owe to the absence of a known pointwise correspondence. The use of analysis of variations in target volume delineations has been proposed in the past for the evaluation of non-rigid registration methods. Delineation of the target volume is usually accomplished by outlining the contour of the volume in each separate tomographic slice. In the studies of reference, the 3D surface is rendered from the contours by means of a Delauney triangulation. This geometrical method only works correctly for convex structures. However the volumes involved on pelvic anatomy, such as bladder or prostate including the seminal vesicles, have relevant concavities that introduce a huge error in the evaluation. A new geometrical method for the evaluation of convex-concave target volumes delineation is proposed
International
Si
Congress
Computer Assisted Radiology and Surgery 22nd International Congress and Exhibition (CARS 2008)
960
Place
Barcelona
Reviewers
Si
ISBN/ISSN
1861-6410
Start Date
25/06/2008
End Date
28/06/2008
From page
59
To page
60
Proceedings of the Computer Assisted Radiology and Surgery 22nd International Congress and Exhibition (CARS 2008)(CARS 2008)
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Bioingeniería y Telemedicina
  • Departamento: Tecnología Fotónica
  • Centro o Instituto I+D+i: Centro de tecnología Biomédica CTB