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Book Contents

Book Index

PXMOD Implementation

Acquisition and Data Requirements

Image Data

Any dynamic volume data.

TAC 1

Time-activity curve of the tissue of interest.

TAC 2

Time-activity curve of the tissue to be differentiated from the tissue of interest.

Model Preprocessing

During preprocessing the variate and covariate factors are calculated using the two specified TACs.

PXMOD FA Model-Preprocessing

The factors are displayed in the Results panel together with the TACs to be examined or exported.

PXMOD FA Pre-Processing Result

Map Parameters

PXMOD FA Pre-Processing Result

Var

The variate image is calculated by summing the products vari*TACi over all time points. Here vari represents the variate weights, and TACi the value at the i-th frame of the pixel.

Covar

Covariate calculated by summing the products covari*TACi over all time points. covari represents the covariate weights, and TACi the value at the i-th frame of the pixel.