ANTsR (version 1.0)

quantifyCBF: Simple quantifyCBF function.

Description

Computes CBF from ASL - pasl or pcasl

Usage

cbfrecon<-quantifyCBF( aslmat, aslmask , parameters )

Arguments

aslmat

input asl matrix

aslmask

3D image mask (antsImage)

parameters

list with entries for sequence and m0 (at minimimum)

Value

a list is output with 3 types of cbf images

Examples

# NOT RUN {
  
# }
# NOT RUN {
  asl<-antsImageRead("PEDS012_20131101_pcasl_1.nii.gz",4)
# image available at http://files.figshare.com/1701182/PEDS012_20131101.zip
  pcasl.processing <- aslPerfusion( asl, moreaccurate=T, interpolation="linear",
    dorobust=0.95, useDenoiser=1:6 )
# user might compare to useDenoiser=FALSE
  pcasl.parameters <- list( sequence="pcasl", m0=pcasl.processing$m0 )
  cbf <- quantifyCBF( pcasl.processing$perfusion, pcasl.processing$mask, pcasl.parameters )
  meancbf <- cbf$kmeancbf
  print(mean(meancbf[ pcasl.processing$mask==1 ]))
  antsImageWrite( meancbf , 'temp.nii.gz')
  plotANTsImage(  meancbf, slices='1x50x1')
  
# }