Computing a Uniform Scaling Parameter for 3D Registration of Lung Surfaces
Data(s) |
20/10/2011
20/10/2011
07/07/2005
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Resumo |
A difficulty in lung image registration is accounting for changes in the size of the lungs due to inspiration. We propose two methods for computing a uniform scale parameter for use in lung image registration that account for size change. A scaled rigid-body transformation allows analysis of corresponding lung CT scans taken at different times and can serve as a good low-order transformation to initialize non-rigid registration approaches. Two different features are used to compute the scale parameter. The first method uses lung surfaces. The second uses lung volumes. Both approaches are computationally inexpensive and improve the alignment of lung images over rigid registration. The two methods produce different scale parameters and may highlight different functional information about the lungs. |
Identificador | |
Idioma(s) |
en_US |
Publicador |
Boston University Computer Science Department |
Relação |
BUCS Technical Reports;BUCS-TR-2005-027 |
Palavras-Chave | #Registrations #Medical imaging #Lung ailment |
Tipo |
Technical Report |