suvr {tacmagic}

Calculate weighted SUVRs for specified regions of interest

Description

Calculate the standardized uptake value ratio (SUVR) for all ROIs in the provided tac data, using the specified reference region.

Usage

suvr(tac, SUVR_def, ref, ...)

Arguments

tac

The time-activity curve data from tac_roi()

SUVR_def

a vector of start times for window to be used in SUVR

ref

a string, e.g. "cerebellum", to specify reference region

...

When called from tm_batch, unused parameters may be supplied

Value

A data.frame of SUVR values for the specified ROIs

See Also

Other SUVR functions: suvr_auc()

Examples

f <- system.file("extdata", "AD06.tac", package="tacmagic")
fv <- system.file("extdata", "AD06_TAC.voistat", package="tacmagic")
AD06_tac <- load_tac(f, format="PMOD")
AD06_volume <- load_vol(fv, format="voistat")
AD06 <- tac_roi(tac=AD06_tac, volumes=AD06_volume, ROI_def=roi_ham_pib(),  
                merge=FALSE, PVC=FALSE)

AD06_SUVR <- suvr(AD06, SUVR_def=c(3000,3300,3600), ref="cerebellum")