Flip Angle and Ernst Angle in Gradient Echo MRI | MRI Physics Course #17

High yield radiology physics past paper questions with video answers
Perfect for testing yourself prior to your radiology physics exam 👇

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Gradient echo MRI sequences require a short TR in order for faster acquisition times. The shorter TR would usually prevent T2 weighted images from being acquired. In this talk we will see the usefulness of using smaller flip angles to reduce TR and allow for T2 contrast despite short TRs. We will also review how smaller flip angles can in fact produce higher signal intensity (the angle which produces the highest signal for a given TR and T1 is known as the Ernst angle).

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The types of questions asked in FRCR, RANZCR AIT, ARRT, FC Rad Diag (SA), ABR qualifying Core Physics and MICR part 1 are surprisingly similar and the key concepts remain the same throughout. I've taken the most high-yield questions and answered them in video format so that I can take you through why certain answers are correct and others are not.

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Michael

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