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Abstract #3408

Extended Phase Graphs: Understanding a Common Misconception of the Framework which Leads to the Failure of Programming It Correctly

Matthias Weigel 1

1 Radiological Physics, Dept. of Radiology and Nuclear Medicine, University of Basel Hospital, Basel, Switzerland

The extended phase graph (EPG) concept is a favorite approach for the rapid quantitation of magnetization response. However, users frequently have problems to properly program the framework. One major reason may be that care has to be taken with the complex Fourier domains of the transverse magnetization and their inherent symmetry relations. The present educational abstract depicts these issues and shows how RF pulses and gradients act differently on the magnetization components. Solutions to overcome the described issues are presented and discussed. Additionally, the author provides representative EPG software demonstrating the solutions.

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