View source: R/bloodPerfusionSVD.R
deconvolutionSVD | R Documentation |
Ostergaard's regularization approach for a model independent solution of cerebral blood flow using a blood pool contrast agent (http://www.ncbi.nlm.nih.gov/pubmed/8916023).
deconvolutionSVD(arterialInputFunction, thresholdSVD = 0.2)
arterialInputFunction |
vector specifying the arterial input function over time. |
thresholdSVD |
is used to threshold the smaller elements of the diagonal matrix during the SVD regularization. 0.2 is a common choice (cf. page 571, end of column 2 in http://www.ncbi.nlm.nih.gov/pubmed/16971140). |
regularized residue function, i.e. the right-hand side of CBF * dT * R = ( V * L^-1 * U^T ) * Cvoi.
Tustison NJ
S0aif <- 17.62
Saif <- c(
16.25, 16.37, 20.22, 78.96, 230.5, 249.79, 198.58, 147.76,
110.39, 111.64, 129.43
)
Caif <- -log(Saif / S0aif)
dSVD <- deconvolutionSVD(Caif, 0.2)
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