Description

Revamp initialization structure of xASL_module_ASL.

Requirements

The order of the initialization was wrong, causing default parameters to override asl4d.json. This is now fixed.
We now run the following initialization steps in xASL_module_ASL:

% A. Check if ASL exists, otherwise skip this module
% B. Manage mutex state — processing step
% C. Cleanup before rerunning
%
% D - ASL processing parameters
% D1. Load ASL parameters (inheritance principle)
% D2. Default ASL processing settings in the x.modules.asl field
% D3. Multi-PLD parsing
% D4. TimeEncoded parsing
% D5. Multi-TE parsing
%
% E - ASL quantification parameters
% E1. Default quantification parameters in the Q field
% E2. Define sequence (educated guess based on the Q field)
% F. Backward and forward compatibility of filenames
% G. Split ASL and M0 within the ASL time series
% H. Skip processing if invalid image

How to test

Test by running xASL_qc_TestExploreASL. The results for macOS intel 2019a look good, except for Philips_2DEPI_Lesion*, which misses the PVC value because of the limited FoV. @jan-petr do you remember if we fixed this already?

Release notes

Revamp initialization structure of xASL_module_ASL to restore a correct order of all steps.