MRI susceptibility artifact due to dry hair shampoo

Case contributed by Chris O'Donnell , 23 May 2017
Diagnosis certain
Changed by Vincent Tatco, 24 May 2017

Updates to Case Attributes

Body was changed:

Dry shampoo is used to remove grease from unwashed hair and contains:

  • cornstarch to bind fatty acids
  • kaolin absorbs grease
  • laminaria Laminaria saccharina extract is an anticlumping agent to reduce caking of the corn starch and kaolin
  • magnesium Stearatestearate is also an anticlumping agent to reduce caking of the corn starchcornstarch and kaolin
  • denatured alcohol is a solvent for the corn starchcornstarch and kaolin
  • liquefied petroleum gas is the propellant for the spray can

The kaolin, cornstarch and magnesium can all cause artefact due to local magnetic field distortion, being most prominently seen on the echoplanar sequences, i.e. DWI and SWI.

  • -<li>laminaria saccharina extract is an anticlumping agent to reduce caking of the corn starch and kaolin</li>
  • -<li>magnesium Stearate is also an anticlumping agent to reduce caking of the corn starch and kaolin</li>
  • -<li>denatured alcohol is a solvent for the corn starch and kaolin</li>
  • +<li>
  • +<em>Laminaria </em><em>saccharina</em> extract is an anticlumping agent to reduce caking of the corn starch and kaolin</li>
  • +<li>magnesium stearate is also an anticlumping agent to reduce caking of the cornstarch and kaolin</li>
  • +<li>denatured alcohol is a solvent for the cornstarch and kaolin</li>

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.