Journal article
Incorporating a measure of local scale in voxel-based 3-D image registration
IEEE transactions on medical imaging, Vol.22(2), pp.228-237
2003
DOI: 10.1109/TMI.2002.808358
PMID: 12715999
Abstract
We present a new class of approaches for rigid-body registration and their evaluation in studying multiple sclerosis (MS) via multiprotocol magnetic resonance imaging (MRI). Three pairs of rigid-body registration algorithms were implemented, using cross-correlation and mutual information (MI), operating on original gray-level images, and utilizing the intermediate images resulting from our new scale-based method. In the scale image, every voxel has the local "scale" value assigned to it, defined as the radius of the largest ball centered at the voxel with homogeneous intensities. Three-dimensional image data of the head were acquired from ten MS patients for each of six MRI protocols. Images in some of the protocols were acquired in registration. The registered pairs were used as ground truth. Accuracy and consistency of the six registration methods were measured within and between protocols for known amounts of misregistrations. Our analysis indicates that there is no "best" method. For medium misregistration, the method using MI, for small add large misregistration the method using normalized cross-correlation performs best. For high-resolution data the correlation method and for low-resolution data the MI method, both using the original gray-level images, are the most consistent. We have previously demonstrated the use of local scale information in fuzzy connectedness segmentation and image filtering. Scale may also have potential for image registration as suggested by this work.
Details
- Title: Subtitle
- Incorporating a measure of local scale in voxel-based 3-D image registration
- Creators
- Laszlo G Nyul - University of SzegedJayaram K Udupa - University of PennsylvaniaPunam K Saha - University of Pennsylvania
- Resource Type
- Journal article
- Publication Details
- IEEE transactions on medical imaging, Vol.22(2), pp.228-237
- DOI
- 10.1109/TMI.2002.808358
- PMID
- 12715999
- NLM abbreviation
- IEEE Trans Med Imaging
- ISSN
- 0278-0062
- eISSN
- 1558-254X
- Publisher
- Institute of Electrical and Electronics Engineers
- Language
- English
- Date published
- 2003
- Academic Unit
- Radiology; Electrical and Computer Engineering
- Record Identifier
- 9984197259402771
Metrics
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