OSIPI Task Force 4.1: ASL lexicon

Task force aims

Develop guidelines for reporting of ASL image acquisition and analysis

Task force description

The guidelines developed by TF 4.1 will enable interoperability and facilitate the comparison of results produced by different ASL analysis tools, studies or sites. We aim to harmonize and increase the detail in the description of parameters and configurations, enable encoding of the complete perfusion imaging workflow, and pave the way for consensus building. An important application will be the amendment of the DICOM standard for ASL perfusion parametric maps, as well as BIDS extensions, and development of demonstrations and use cases.

Task force leads


David Thomas
UCL Queen Square Institute of Neurology, UK


Yuriko Suzuki
Wellcome Centre for Integrative Neuroimaging, FMRIB, University of Oxford, UK

Task force members

Task force status

  • 2020.01.15 Leads confirmed
  • 2020.02.18 Member confirmed
  • 2020.03.25 New member joined
  • 2020.06.17 1st online meeting, meet & greet, first lexicon draft/sketch created
  • 2020.07.22 2nd online meeting, working on the milestone
  • 2020.08.03 1st milestone (Standard ASL techniques and parameters in brain perfusion imaging) achieved
  • 2020.11.02 2nd milestone (Advanced ASL techniques) achieved
  • 2021.02.12 3nd milestone (Physiological parameters) achieved

  • Task force folder on drive - storage space for public or private documents developed by the task force.
  • Task force slack channel - for discussions between task force members.
  • Task force webpage backend - for information on task force progress, links to public resources, aims, membership, status, etc.

Public resources

  • Deliverable 1 - Arterial Spin Labeling perfusion imaging and analysis lexicon and reporting recommendations (v0.1)