Description

Allow the ASL module without an M0 scan, if PWI/M0 in ASL quantification was disabled and no M0 image is present. Multiple datasets have this problem when Philips only outputs a single CBF image that was already quantified, which is the case if in Philips ASL source images is not set to All.

BTW: in BIDS2Legacy, "M0Type":"Absent" was interpreted as M0:UseControlAsM0; rather this could stay "Absent", and managed in xASL_module_ASL; to be discussed.

Tasks

• Add new processing parameter x.Q.M0 = 'Absent'
• Force absent M0 processing parameter if M0 quantification is disabled and M0 doesn't exist (including a warning) if x.modules.asl.ApplyQuantification(5) == false && ~exist(pathM0, file); x.Q.M0 = 'Absent'; end -> instead of UseControlAsM0
• Force disabling x.modules.asl.ApplyQuantification(2, 4, 5) when x.Q.M0 = 'Absent'
• Test flavor (waiting for Jan to fix Duplicate key warning checking TimeEncoded #1145 first
• Add to flavor database
• Test vascular masking
• Let the Arunan Srirengan a.srirengan@neura.edu.au and Lauriane Jugé l.juge@neura.edu.au know that the issue was fixed.
• Finalize adding to flavors.

Release notes

Disable M0 processing when M0 not present