tac_suv {tacmagic}

Calculate SUV from TAC

Description

Calculate the standardized uptake value (SUV) time-activity curve from a tac object, the participant's weight, and the tracer dose. The weight must be in kg, and the tracer dose must be specified. The dose is converted to MBq, the tac is converted to kBq/cc, and the final SUV units are thus in g/cc. Aside from the tac object, the remaining parameters should be left NULL if the required data is in the tac object attributes (as can be done with batch_load().

Usage

tac_suv(tac, dose = NULL, dose_unit = NULL, weight_kg = NULL)

Arguments

tac

time-activity curve object (decay-corrected)

dose

the injected tracer dose

dose_unit

unit of tracer dose (e.g. "MBq", "kBq", "mCi"...)

weight_kg

the participant's weight in kg

Value

tac object with SUV values

See Also

Other SUV functions: suv()

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)
# dose and weight are fabricated for the example
AD06_suv <- tac_suv(AD06, dose = 9.0, dose_unit = "mCi", weight_kg = 70)