MRICloudMultidelayCalculateCBFATT

Purpose. Voxelwise fit of CBF and ATT from multi-delay ASL using MRICloud kinetic models (PCASL and PASL).

Inputs

• derivatives/<sub>/perf/{asl}.nii (4D)

• M0map.nii, brnmsk_dspl.nii, brnmsk_clcu.nii

• ASLContext including label and control

• PLDs per label volume (derived from PLDList)

Outputs

• {asl}_aCBF_native.nii — absolute CBF

• {asl}_rCBF_native.nii — relative CBF (normalized)

• {asl}_ATT_native.nii — arterial transit time (ms)

Configuration

Key	Type / Default	Meaning
t1_blood	int / 1650	Blood T1 (ms)
part_coef	float / 0.9	Partition coefficient (λ)

YAML example

modules:
  - name: MRICloudMultidelayCalculateCBFATT
    params:
      t1_blood: 1650
      part_coef: 0.9