MRI 002 Brain week 1

actual lecture starts 1:05 in

Piercings and Tattoos

  • Policies on piercings and tattoos vary depending on the clinical site.

  • Some may need to be removed or covered.

In MRI we take pictues of slices of anatomy

Slice Plane Review

  • Coronal plane - gradient coil used (x)

  • saggital plane - gradient coil used ( )

  • axial plane - gradient coil used ( )

  • All three gradients are used to create the picture.

  • Frequency is one direction; phase is the other direction.

  • Website: mri.com

Important Definitions:

  • AXIAL/TRANSVERSE: Top and bottom, superior and inferior.

  • SAGITTAL: Right to Left, Medial, proximal.

3-Plane Localizers and Scans by Planes.

  • A 3-Plane Localizer (3PL) is used by MRI techs to confirm the patient's position, as well as correct positioning.

  • Remember to take a 3PL for any scan you may be taking in the MRI room before starting.

  • It is also used to confirm coil coverage, and is like a test image.

  • Gradient is named logically.

Slice Prescription Set-Up.

  • Students need to change patients into hospital-approved clothing to avoid burns.

  • Important structures to look out for are the longitudinal fissure and the corpus callosum.

Gradient Summary and Helpful Notes

  • Sagittal-X, Coronal-Y, Axial-Z

  • Every patient needs to be changed into hospital-approved clothing.

  • Immobilization means a patient is able to get out, restraint means they cannot.

Setting Slices for Axial and Sagittal Images

  • (Steps for setting up slices for Axial and Sagittal) (Step one: Identify, Step Two: Which two of the three images are we are going to use, Step Three: Put out your slices using anatomical landmarks).

  • Axial -Parallel to the corpus callosum on the sagittal side.

  • Axial - Perpendicular to longitudinal fissure; coronal.

  • Sagittal- Parallel to longitudinal fissure (coronal axial).