Abstract
Image resolution in 4D-CT is a crucial bottleneck that needs to be overcome for improved dose planning in radiotherapy for lung cancer. In this paper, we propose a novel patch-based algorithm to enhance the image quality of 4D-CT data. Our premise is that anatomical information missing in one phase can be recovered from complementary information embedded in other phases. We employ a patch-based mechanism to propagate information across phases for reconstruction of intermediate slices in the axial direction, where resolution is normally the lowest. Specifically, structurally-matching and spatially-nearby patches are combined for reconstruction of each patch. For greater sensitivity to anatomical nuances, we further employ a quad-tree technique to adaptively partition each slice of the image in each phase for more fine-grained refinement. Our evaluation based on a public 4D-CT lung data indicates that our algorithm gives very promising results with significantly enhanced image structures.
Original language | English |
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Title of host publication | Medical Image Computing and Computer-Assisted Intervention, MICCAI2012 - 15th International Conference, Proceedings |
Editors | Nicholas Ayache, Herve Delingette, Polina Golland, Kensaku Mori |
Publisher | Springer Verlag |
Pages | 214-222 |
Number of pages | 9 |
ISBN (Print) | 9783642334146 |
DOIs | |
Publication status | Published - 2012 |
Event | 15th International Conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2012 - Nice, France Duration: 2012 Oct 1 → 2012 Oct 5 |
Publication series
Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
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Volume | 7510 LNCS |
ISSN (Print) | 0302-9743 |
ISSN (Electronic) | 1611-3349 |
Conference
Conference | 15th International Conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2012 |
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Country/Territory | France |
City | Nice |
Period | 12/10/1 → 12/10/5 |
Bibliographical note
Publisher Copyright:© Springer-Verlag Berlin Heidelberg 2012.
ASJC Scopus subject areas
- Theoretical Computer Science
- General Computer Science