ASLtbx Pipeline
===============

**Runner:** ``pyasl.pipelines.asltbx_pipeline.run_pipeline``

**Purpose.** Classic SPM/Nipype-based preprocessing + ASLtbx quantification.

Inputs
------

- ``root``: dataset root (BIDS-like); derivatives are written to
  ``<root>/asltbx/derivatives`` by the individual modules.
- ``config_path``: YAML config with ordered steps.

YAML Schema
-----------

Allowed step names: ``ResetOrientation``, ``Realign``, ``Coregister``, ``Smooth``,
``CreateMask``, ``PerfusionQuantify``.

Example
-------

.. code-block:: yaml

    type: asltbx
    steps:
      - name: ResetOrientation
      - name: Realign
      - name: Coregister
      - name: Smooth
        params: { fwhm: [6, 6, 6] }
      - name: CreateMask
        params: { thres: 0.1 }
      - name: PerfusionQuantify
        params:
          QuantFlag: 0
          MaskFlag: true
          MeanFlag: true
          BOLDFlag: false
          PerfFlag: false
          SubtractionType: 0
          SubtrationOrder: 1
          Timeshift: 0.5