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Hybrid feature-based Log-Demons registration for tumour tracking in 2-D liver ultrasound images.
In: (2012 9th IEEE International Symposium on Biomedical Imaging (ISBI), 02-05 May 2012, Barcelona, Spain). 2012. 724-727 (Proceedings - International Symposium on Biomedical Imaging)
Traditional intensity-based registration methods are often insufficient for tumour tracking in time-series ultrasound, where the low signal-to-noise ratio significantly degrades the quality of the output images, and topological changes may occur as the anatomical structures slide in and out of the focus plane. To overcome these issues, we propose a hybrid feature-based Log-Demons registration method. The novelty of our approach lies in estimating a hybrid update deformation field from demons forces that carry voxel-based local information and regional spatial correspondences yielded by a block-matching scheme within the diffeomorphic Log-Demons framework. Instead of relying on intensities alone to drive the registration, we use multichannel Log-Demons, with channels representing features like intensity, local phase and phase congruency. Results on clinical data show that our method successfully registers various patient-specific cases, where the tumours are of variable visibility, and in the presence of shadows and topological changes.
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Publication type
Article: Conference contribution
Keywords
Block-matching ; Diffeomorphic ; Log-demons ; Tracking ; Ultrasound
ISSN (print) / ISBN
1945-7928
e-ISSN
1945-8452
Conference Title
2012 9th IEEE International Symposium on Biomedical Imaging (ISBI)
Conference Date
02-05 May 2012
Conference Location
Barcelona, Spain
Quellenangaben
Pages: 724-727
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Institute(s)
Institute for Machine Learning in Biomed Imaging (IML)