load_tac {tacmagic}

Loads TAC from file for use by other functions (default is PMOD .tac format)

Description

This is the main function for loading an individual participant's TAC data. The minimal required information within the supplied files is the start and stop times and a time unit (either seconds or minutes), as well as the activity values for 1 or more ROIs, and units for activity. The currently supported formats (with the corresponding format argument), include:

• "PMOD": PMOD .tac files

• "voistat": PMOD TAC .voistat files used in combination with PMOD .acqtimes file for start/stop times.

• "magia": magia pipeline .mat tac file

• "DFT": Turku PET Centre's DFT format

Usage

load_tac(
  filename,
  format = "PMOD",
  acqtimes = NULL,
  time_unit = NULL,
  activity_unit = NULL
)

Arguments

filename

(e.g. "participant01.tac")

format

A character string, with options listed above (e.g. "PMOD")

acqtimes

Filename for a .acqtimes file (as in PMOD), required for format="voistat"

time_unit

NULL if in file (e.g. PMOD .tac), or set to "seconds" or "minutes" if not in file or to override file

activity_unit

NULL if in file (e.g. PMOD .tac), or set to "kBq/cc", "Bq/cc", "nCi/cc"

Value

tac object

See Also

Other Loading functions: as.tac(), load_voistat(), load_vol()

Examples

f_raw_tac <- system.file("extdata", "AD06.tac", package="tacmagic") 
tac <- load_tac(f_raw_tac)