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qMRI (version 1.2.7)

Methods for Quantitative Magnetic Resonance Imaging ('qMRI')

Description

Implementation of methods for estimation of quantitative maps from Multi-Parameter Mapping (MPM) acquisitions (Weiskopf et al. (2013) ) including adaptive smoothing methods in the framework of the ESTATICS model (Estimating the apparent transverse relaxation time (R2*) from images with different contrasts, Weiskopf et al. (2014) ). The smoothing method is described in Mohammadi et al. (2017). . Usage of the package is also described in Polzehl and Tabelow (2019), Magnetic Resonance Brain Imaging, Chapter 6, Springer, Use R! Series. .

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Version

Install

install.packages('qMRI')

Monthly Downloads

290

Version

1.2.7

License

GPL (>= 2)

Maintainer

Karsten Tabelow

Last Published

September 18th, 2023

Functions in qMRI (1.2.7)

calculateQI

Obtain quantitative maps from estimated ESTATICS parameters.
estimateESTATICS

Estimate parameters in the ESTATICS model.
estimateIRsolidfixed

Estimate mixture parameter in Inversion Recovery MRI experiments mixture model for non-fluid voxel
colMT

MT map color scheme
extract-methods

Methods to extract information from objects of class "MPMData", "ESTATICSModel", "sESTATICSModel", "qMaps", "IRdata", "IRfluid" and "IRmixed".
estimateIRfluid

Estimate parameters in Inversion Recovery MRI experiments model for CSF voxel
estimateIR

Estimate IRMRI parameters
MREdisplacement

Calculate the motion induced signal phase for IR-MRE in biphasic material
estimateIRsolid

Estimate parameters in Inversion Recovery MRI experiments mixture model for non-fluid voxel
awssigmc

Estimate noise variance for multicoil MR systems
writeQI

Write estimated maps in standardized form as NIfTI files.
readMPMData

Read experimental Multi-Parameter Mapping (MPM) data.
smoothIRSolid

Smooth object generated by function estimateIRsolid
qMRI-package

tools:::Rd_package_title("qMRI")
writeESTATICS

Write maps of ESTATICS parameters in standardized form as NIfTI files.
smoothESTATICS

Adaptive smoothing of ESTATICS parameters and MPM data
readIRData

Prepare IRMRI dataset