title: Accelerated boundary element method for diffuse optical imaging.
abstract: The boundary element method (BEM) is a useful tool in diffuse optical imaging (DOI) when modelling large optical regions whose parameters are piecewise constant, but are computationally expensive. We present here an acceleration technique, the single-level fast multipole method, for a highly lossy medium. The enhanced practicability of the BEM in DOI is demonstrated through test examples on single-layer problems, where order of magnitude reduction factors on solution time are achieved and on a realistic three-layer model of the neonatal head. Our experimental results agree very closely with theoretical predictions of computational complexity.
authors: Centre for Medical Image Computing, University College London, London, UK. j.elisee@cs.ucl.ac.uk
authors: J
authors: J
authors: Elisee
authors: M
authors: M
authors: Bonnet
authors: S
authors: S
authors: Arridge
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D004058:Diffusion; D020342:Finite Element Analysis; D006257:Head / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008027:Light; D008962:Models, Theoretical; D019047:Phantoms, Imaging; D012542:Scattering, Radiation; D041622:Tomography, Optical / Q000379:methods*; D014463:Ultrasonography