ITEM METADATA RECORD
Title: Removal of plaque and stent artifacts in subtraction CT angiography using nonrigid registration and a volume penalty
Authors: Loeckx, Dirk
Drisis, Stylianos
Maes, Frederik
Vandermeulen, Dirk
Marchal, Guy
Suetens, Paul #
Issue Date: 2005
Host Document: Proceedings EMBC2005 - 27th annual international conference of the IEEE Engineering in Medicine and Biology Society (EMBS) pages:4294-4297
Conference: EMBC2005 - 27th annual international conference of the IEEE Engineering in Medicine and Biology Society (EMBS) location:Shanghai, China date:September 1-4, 2005
Abstract: Computed tomography angiography (CTA) is an established tool for vascular imaging. However, high-intense structures in the contrast image can seriously hamper luminal visualisation. This can be solved by subtraction CTA, where a native image is subtracted from the contrast image. However, patient and organ motion limit the application of this technique. Within this paper, a fully automated intensity-based nonrigid 3D registration algorithm for subtraction CT angiography is presented, using a penalty term to avoid volume change during registration. Visual and automated validation on four clinical datasets clearly show that the algorithm strongly reduces motion artifacts in subtraction CTA. Most artifacts disappear, also artifacts caused by minimal displacement of stents or calcified plaques, allowing a 2D and 3D artifact-free visualisation of the vessel lumen. This enables a quick overview of the whole vascular structure and opens the possibility to the visualisation of smaller vessels.
Description: Loeckx D., Drisis S., Maes F., Vandermeulen D., Marchal G., Suetens P., ''Removal of plaque and stent artifacts in subtraction CT angiography using nonrigid registration and a volume penalty'', Proceedings EMBC2005 - 27th annual international conference of the IEEE Engineering in Medicine and Biology Society (EMBS), pp. 4294-4297, September 1-4, 2005, Shanghai, China.
ISSN: 1557-170X
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Radiology
ESAT - PSI, Processing Speech and Images
# (joint) last author

Files in This Item:
File Status SizeFormat
2340.pdf Published 326KbAdobe PDFView/Open Request a copy

These files are only available to some KU Leuven Association staff members

 




All items in Lirias are protected by copyright, with all rights reserved.

© Web of science