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Arterial spin-labeling in routine clinical practice, part 2: hypoperfusion patterns.

A R Deibler1, J M Pollock, R A Kraft

  • 1Department of Radiology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA.

AJNR. American Journal of Neuroradiology
|March 22, 2008
PubMed
Summary

Arterial spin-labeling (ASL) provides rapid perfusion imaging for detecting hypo- and hyperperfusion in various diseases. This review details hypoperfusion patterns observed in over 3000 clinical brain MRI cases using ASL.

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Area of Science:

  • Neuroradiology
  • Medical Imaging
  • Cerebrovascular Diseases

Background:

  • Arterial spin-labeling (ASL) is a non-invasive MRI technique for assessing cerebral blood flow.
  • Understanding ASL perfusion patterns is crucial for diagnosing various neurological conditions.
  • Hypoperfusion patterns in routine clinical ASL imaging are not well-characterized.

Purpose of the Study:

  • To describe patterns of hypoperfusion identified during routine clinical application of ASL.
  • To illustrate ASL findings in a diverse cohort of patients undergoing brain MRI.
  • To enhance the interpretation of ASL in clinical practice.

Main Methods:

  • Review of over 3000 pulsed ASL procedures performed over one year.
  • ASL imaging conducted as part of routine clinical brain MRI at 1.5T and 3T.
  • Systematic evaluation of image quality and hypoperfusion patterns in normal and diseased states.

Main Results:

  • ASL demonstrated both hypo- and hyperperfusion across a spectrum of clinical conditions.
  • Specific patterns of hypoperfusion were identified in relation to underlying pathologies.
  • Image quality was assessed for diagnostic reliability in routine clinical settings.

Conclusions:

  • ASL is a valuable tool for detecting perfusion abnormalities in clinical neurology.
  • Recognizing ASL hypoperfusion patterns aids in accurate diagnosis and patient management.
  • This review provides a foundation for interpreting ASL findings in a large patient population.