create_blooddata_components: Create a blooddata object from data vectors
In mathesong/kinfitr: Kinetic Modelling of PET Time Activity Curves

create_blooddata_components

R Documentation

Create a blooddata object from data vectors

Description

This function creates a blooddata object from data vectors. This function creates data objects which contain the minimum amount of data for modelling. Leave blank fields which do not exist.

Usage

create_blooddata_components(
  Blood.Discrete.Values.time = NULL,
  Blood.Discrete.Values.activity = NULL,
  Plasma.Values.time = NULL,
  Plasma.Values.activity = NULL,
  Metabolite.Values.time = NULL,
  Metabolite.Values.parentFraction = NULL,
  Blood.Continuous.Values.time = NULL,
  Blood.Continuous.Values.activity = NULL,
  Blood.Continuous.DispersionConstant = NULL,
  Blood.Continuous.DispersionCorrected = TRUE,
  TimeShift = 0
)

Arguments

`Blood.Discrete.Values.time`	Sample times in seconds.
`Blood.Discrete.Values.activity`	Measured radioactivity in kBq/ml.
`Plasma.Values.time`	In seconds. Sample times in seconds.
`Plasma.Values.activity`	Measured radioactivity in kBq/ml.
`Metabolite.Values.time`	Sample times in seconds.
`Metabolite.Values.parentFraction`	Measured fraction (unitless).
`Blood.Continuous.Values.time`	In seconds.
`Blood.Continuous.Values.activity`	in kBq/ml.
`Blood.Continuous.DispersionConstant`	External dispersion time constant resulting from tubing in seconds.
`Blood.Continuous.DispersionCorrected`	Boolean flag specifying whether the continuous blood data have been dispersion-corrected.
`TimeShift`	The extent to which all the times in the data should be shifted (in seconds). Defaults to 0.

Details

Ideally, I recommend storing your data according to the BIDS specification and using the bids_create_blooddata() command instead. Please refer to the PET BIDS standard for further details about the inputs.

Value

a blooddata object

Author(s)

Granville J Matheson, mathesong@gmail.com

Examples


blooddata <- pbr28$blooddata[[1]]

blooddata2 <- create_blooddata_components(
   Blood.Discrete.Values.time =
     blooddata$Data$Blood$Discrete$Values$time,
   Blood.Discrete.Values.activity =
     blooddata$Data$Blood$Discrete$Values$activity,
   Plasma.Values.time =
     blooddata$Data$Plasma$Values$time,
   Plasma.Values.activity =
     blooddata$Data$Plasma$Values$activity,
   Metabolite.Values.time =
     blooddata$Data$Metabolite$Values$time,
   Metabolite.Values.parentFraction =
     blooddata$Data$Metabolite$Values$parentFraction,
   Blood.Continuous.Values.time =
     blooddata$Data$Blood$Continuous$Values$time,
   Blood.Continuous.Values.activity =
     blooddata$Data$Blood$Continuous$Values$activity,
   Blood.Continuous.DispersionConstant =
     blooddata$Data$Blood$Continuous$DispersionConstant,
   Blood.Continuous.DispersionCorrected = FALSE,
   TimeShift = 0)

mathesong/kinfitr documentation built on Jan. 15, 2024, 11:07 p.m.