percent_ripple¶

mr_utils.utils.percent_ripple.percent_ripple(profile)[source]¶

Calculate percent ripple of the bSSFP spectral profile.

Parameters:	profile (array_like) – The off-resonance profile as a function of theta.
Returns:	Measure of ripple level of profile.
Return type:	float

Notes

The residual ripple can be predicted by examining the variations in the expected signal profile with free-precession angle, theta.

Implements percent ripple, Equation [11], from [1].

References

[1]	Bangerter, Neal K., et al. “Analysis of multiple‐acquisition SSFP.” Magnetic Resonance in Medicine: An Official Journal of the International Society for Magnetic Resonance in Medicine 51.5 (2004): 1038-1047.