Deconvolution-Based CT and MR Brain Perfusion Measurement: Theoretical Model Revisited and Practical Implementation Details

Table 2

Summary of perfusion parameters and how these parameters can be estimated using deconvolution-based and nondeconvolution-based methods.

Parameter	w/Deconvolution	w/o Deconvolution
CBV	(1/𝜌voi)⋅∫^∞0𝑘(𝜏)d𝜏	(1/𝜌voi)⋅∫^∞0𝑐voi(𝜏)d𝜏/∫^∞0𝑐art(𝜏)d𝜏
CBF	(1/𝜌voi)⋅max(𝑘(𝑡))	(1/𝜌voi)⋅[d𝑐voi(𝑡)/d𝑡]max/[𝑐art(𝑡)]max
MTT	∫^∞0𝑘(𝜏)d𝜏/max(𝑘(𝜏))	see comment in Section 3.5
TTP	—	argmax𝑡(𝑐voi(𝑡))
FM	—	∫^∞0𝑐voi(𝜏)𝜏d𝜏/∫^∞0𝑐voi(𝜏)d𝜏