Logo image
Back
mritc: A Package for MRI Tissue Classification
Journal article   Open access

mritc: A Package for MRI Tissue Classification

Dai Feng and Luke Tierney
Journal of statistical software, Vol.44(7), pp.1-20
10/01/2011
DOI: 10.18637/jss.v044.i07
url
https://doi.org/10.18637/jss.v044.i07View
Published (Version of record) Open Access

Abstract

This paper presents an R package for magnetic resonance imaging (MRI) tissue classification. The methods include using normal mixture models, hidden markov normal mixture models, and a higher resolution hidden Markov normal mixture model fitted by various optimization algorithms and by a Bayesian Markov chain Monte Carlo (MCMC) methods. Functions to obtain initial values of parameters of normal mixture models and spatial parameters are provided. Supported input formats are ANALYZE, NIfTI, and a raw byte format. the function slices3d in misc3d is used for visualizing data and results. Various performance evaluation indices are provided to evaluate classification results. To improve performance, table lookup methods are used in several places, and vectorized computation taking advantage of conditional independence properties are used. Some computations are performed by C code, and OpenMP is used to parallelize key loops in the C code.
 Computer Science Computer Science, Interdisciplinary Applications Mathematics Physical Sciences Science & Technology Statistics & Probability Technology

Details

Metrics

5 Record Views
Logo image