Function Description
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	Name: T2_RELAX 
	Function: f(t) = Mo*(1 - W*exp(-t/T1)) 
	Parameters: Mo W T1 

Notes
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	Fit of NMR spin-lattice relaxation data using pulse sequence
	d1-p1-d2-pw-acquire parameter W to account for flip angle of pulse p1 

	W=1 for ideal progressive saturation
	W=2 for ideal inversion recovery

C-code for the function
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	answer = Mo * (1 - W * exp(-x / T1));