This function implements the onetissue compartment rubidium82 model published in [1].
1 2 3 4  lortie.model(input.function, FLV, flow, k2, time.start,
time.end, a = 0.77, b = 0.63,
left.ventricle = input.function,
interpolation.type = 1)

input.function 
Input function TAC. 
FLV 
Fraction of blood (from left ventricle) in myocardium TAC. 
flow 
Myocardial blood flow. 
k2 
Rate constant. 
time.start 
Initial acquisition time for each frame (in minutes). 
time.end 
Final acquisition time for each frame (in minutes). 
a 
Parameter 
b 
Parameter 
left.ventricle 
Left ventricle TAC, used for
spillover corretion. Defaults to

interpolation.type 
Interpolation type selection.
Passed to 
The TAC resulting of solving the model with the given parameters.
[1] M. Lortie, R. S. B. Beanlands, K. Yoshinaga, R. Klein, J. N. Dasilva, and R. a DeKemp, "Quantification of myocardial blood flow with 82Rb dynamic PET imaging.," European journal of nuclear medicine and molecular imaging, vol. 34, no. 11, pp. 176574, Nov. 2007.
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