Anisotropic multi-scale fluid registration: evaluation in magnetic resonance breast imaging

Research output: Contribution to journalArticlepeer-review

90 Citations (Scopus)

Abstract

Registration using models of compressible viscous fluids has not found the general application of some other techniques (e.g. free-form-deformation (FFD)) despite its ability to model large diffeomorphic deformations. We report on a multi-resolution fluid registration algorithm which improves on previous work by (a) directly solving the Navier-Stokes equation at the resolution of the images, (b) accommodating image sampling anisotropy using semicoarsening and implicit smoothing in a full multi-grid (FMG) solver and (c) exploiting the inherent multi-resolution nature of FMG to implement a multi-scale approach. Evaluation is on five magnetic resonance (MR) breast images subject to six biomechanical deformation fields over 11 multi-resolution schemes. Quantitative assessment is by tissue overlaps and target registration errors and by registering using the known correspondences rather than image features to validate the fluid model. Context is given by comparison with a validated FFD algorithm and by application to images of volunteers subjected to large applied deformation. The results show that fluid registration of 3D breast MR images to sub-voxel accuracy is possible in minutes on a 1.6 GHz Linux-based Athlon processor with coarse solutions obtainable in a few tens of seconds. Accuracy and computation time are comparable to FFD techniques validated for this application.

Original languageEnglish
Article numberN/A
Pages (from-to)5153-5174
Number of pages22
JournalPhysics in Medicine and Biology
Volume50
Issue number21
DOIs
Publication statusPublished - 7 Nov 2005

Fingerprint

Dive into the research topics of 'Anisotropic multi-scale fluid registration: evaluation in magnetic resonance breast imaging'. Together they form a unique fingerprint.

Cite this