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SMRT Educational Seminars
 
MR Imaging Physics Tutorial
Volume 14, Number 3
 
Accreditation:
The SMRT Educational Seminars (Volume 14, Number 3), has been approved for 2.5 Category A Continuing Educational credits.

Read the SMRT Educational Seminars (Volume 14, Number 3), "MR Imaging Physics Tutorial" and complete the quiz and official Answer Form at the back of the article. To receive credit the quiz must be completed with a score of 75% or better. Completion of all questions with a passing score will earn a total of 2.5 category A Continuing Education credits.
 
SMRT members should send the completed Answer Form to the SMRT Education Department for scoring. The certificate will state the CE reference number and awarded CE credits. Members receiving a score less than 75% will be notified and given the option of taking the quiz an additional two times. Members should retain their CE Certificate for their Continuing Education registry requirements.
 
Educational Objectives
Fundamental Physics of MR Imaging
  • Review the basic concepts including resonance and precession.
  • Describe radiofrequency energy, its absorption and the role it plays in MRI.
  • Discuss T1 and T2 relaxation and contrast including diagrams and image examples.
  • Explain the components of spin echo MR imaging using pulse sequence diagrams.
  • Review the effects of TE and TR and the resulting contrast formation.
  • Describe the variations of spin echo MR imaging including multiecho, turbo, and inversion recovery.
  • Introduce gradient echo MR imaging.

MR Imaging: Brief Overview and Emerging Applications

  • Describe MR instrumentation including magnet designs, field strength, and shim, gradient, and RF coils.
  • Explain the process of MR signal localization used in image reconstruction.
  • Review gradients and their application used in localization including slice-selection, frequency- and phase-encoding.
  • Discuss MR signal in the form of T1 and T2.
  • Introduce k-space and its formation and effect on MR images generated.
  • Describe parallel imaging and the initial variations.
  • Discuss specific applications, basic and advanced, including diffusion-weighted imaging and spectroscopy.