Arterial spin labeling (ASL) perfusion: techniques and clinical use

Diagn Interv Imaging. 2013 Dec;94(12):1211-23. doi: 10.1016/j.diii.2013.06.010. Epub 2013 Jul 11.

Abstract

Arterial spin labeling (ASL) perfusion is a MRI technique to quantify tissue blood flow. ASL is a non-invasive technique that labels the protons in the arterial blood by radiofrequency pulses, without the exogenous injection of contrast media. This article has three goals: 1) present the principles of ASL perfusion, the types of labeling and the ways to obtain the mapping; 2) specify and the quality criteria for the mapping obtained, while emphasizing the artifacts; and 3) describe the main encephalic and renal applications.

Keywords: Brain; Kidney; MRI; Perfusion.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Arteries
  • Brain / blood supply
  • Humans
  • Kidney / blood supply
  • Magnetic Resonance Imaging / methods*
  • Perfusion Imaging / methods*
  • Protons
  • Regional Blood Flow* / physiology

Substances

  • Protons