pipeline_relx.pl
T2 relaxometry fitting from multiple echo volumes
pipeline_relx.pl <echo1> <echo2> ... <output> [--mask <mask>]
DESCRIPTION
pipeline_relx.pl performs T2 relaxometry by fitting an exponential decay model to multiple echo volumes acquired at different echo times. The script estimates the T2 relaxation time at each voxel by fitting the signal intensity decay across echoes.
The input consists of two or more MINC volumes acquired at different echo times, and the output is a T2 relaxation map. An optional brain mask can restrict the fitting to the brain region, improving computation time and reducing noise in non-brain areas.
T2 relaxometry maps are useful for quantitative MRI analysis, tissue characterization, and detecting pathological changes that alter relaxation properties.
OPTIONS
--verbose- Print progress information during processing.
--clobber- Overwrite the output file if it already exists.
--mask <mask>- Brain mask to restrict T2 fitting to the brain region.
EXAMPLES
Fit T2 relaxation from two echo volumes:
pipeline_relx.pl echo1.mnc echo2.mnc t2_relx.mnc
Fit T2 relaxation from four echo volumes with a mask:
pipeline_relx.pl echo1.mnc echo2.mnc echo3.mnc echo4.mnc \
t2_relx.mnc --mask brain_mask.mnc
Fit with verbose output and clobber:
pipeline_relx.pl echo1.mnc echo2.mnc t2_relx.mnc \
--mask brain_mask.mnc --verbose --clobber
AUTHOR
Vladimir S. Fonov - McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University.
COPYRIGHTS
Copyright © McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University.