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Spatially varying Riemannian elasticity regularization : Application to thoracic CT registration in image-guided radiotherapy

Bjerre, T. ; Fogtmann, M. O. ; Aznar, M. ; Af Rosenschöld, P. Munck LU orcid ; Specht, L. and Larsen, R. LU (2012) 2012 9th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, ISBI 2012 In Proceedings - International Symposium on Biomedical Imaging p.1224-1227
Abstract

For deformable registration of computed tomography (CT) scans in image guided radiation therapy (IGRT) we apply Riemannian elasticity regularization. We explore the use of spatially varying elasticity parameters to encourage bone rigidity and local tissue volume change only in the gross tumor volume (GTV) and the lungs. We evaluate the method on the point-validated 4DCT breathing thorax POPI-model and demonstrate its use and properties in registration of pre- and post-chemo CT scans for contour propagation in a Hodgkin lymphoma (HL) case showing significant tumor shrinkage. For the POPI-model we achieved a total mean target registration error (TRE) of 0.92 ± 0.49 mm. Using spatially varying regularization for the HL case, deformation... (More)

For deformable registration of computed tomography (CT) scans in image guided radiation therapy (IGRT) we apply Riemannian elasticity regularization. We explore the use of spatially varying elasticity parameters to encourage bone rigidity and local tissue volume change only in the gross tumor volume (GTV) and the lungs. We evaluate the method on the point-validated 4DCT breathing thorax POPI-model and demonstrate its use and properties in registration of pre- and post-chemo CT scans for contour propagation in a Hodgkin lymphoma (HL) case showing significant tumor shrinkage. For the POPI-model we achieved a total mean target registration error (TRE) of 0.92 ± 0.49 mm. Using spatially varying regularization for the HL case, deformation was limited to the GTV and lungs.

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author
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publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
2012 9th IEEE International Symposium on Biomedical Imaging : From Nano to Macro, ISBI 2012 - Proceedings - From Nano to Macro, ISBI 2012 - Proceedings
series title
Proceedings - International Symposium on Biomedical Imaging
article number
6235782
pages
1224 - 1227
conference name
2012 9th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, ISBI 2012
conference location
Barcelona, Spain
conference dates
2012-05-02 - 2012-05-05
external identifiers
  • scopus:84864858335
ISSN
1945-8452
1945-7928
ISBN
9781457718588
DOI
10.1109/ISBI.2012.6235782
language
English
LU publication?
no
id
c8d2e2c5-0f71-49f4-9fe7-fef82762cd66
date added to LUP
2023-07-19 17:05:52
date last changed
2024-01-05 03:32:50
@inproceedings{c8d2e2c5-0f71-49f4-9fe7-fef82762cd66,
  abstract     = {{<p>For deformable registration of computed tomography (CT) scans in image guided radiation therapy (IGRT) we apply Riemannian elasticity regularization. We explore the use of spatially varying elasticity parameters to encourage bone rigidity and local tissue volume change only in the gross tumor volume (GTV) and the lungs. We evaluate the method on the point-validated 4DCT breathing thorax POPI-model and demonstrate its use and properties in registration of pre- and post-chemo CT scans for contour propagation in a Hodgkin lymphoma (HL) case showing significant tumor shrinkage. For the POPI-model we achieved a total mean target registration error (TRE) of 0.92 ± 0.49 mm. Using spatially varying regularization for the HL case, deformation was limited to the GTV and lungs.</p>}},
  author       = {{Bjerre, T. and Fogtmann, M. O. and Aznar, M. and Af Rosenschöld, P. Munck and Specht, L. and Larsen, R.}},
  booktitle    = {{2012 9th IEEE International Symposium on Biomedical Imaging : From Nano to Macro, ISBI 2012 - Proceedings}},
  isbn         = {{9781457718588}},
  issn         = {{1945-8452}},
  language     = {{eng}},
  pages        = {{1224--1227}},
  series       = {{Proceedings - International Symposium on Biomedical Imaging}},
  title        = {{Spatially varying Riemannian elasticity regularization : Application to thoracic CT registration in image-guided radiotherapy}},
  url          = {{http://dx.doi.org/10.1109/ISBI.2012.6235782}},
  doi          = {{10.1109/ISBI.2012.6235782}},
  year         = {{2012}},
}