frame_cumsum: Cumulative integral over frames
In mathesong/kinfitr: Kinetic Modelling of PET Time Activity Curves
View source: R/kinfitr_miscfuncs.R
frame_cumsum R Documentation
Cumulative integral over frames
Description
This function uses the frame radioactivity values and durations to create a
cumulative integral. It sums the multiple of radioactivity and duration
for all frames preceding the current frame, and halves that of the current
frame. This is an alternative to using the trapezoidal method.
Usage
frame_cumsum(dur, tac)
Arguments
dur
Frame durations in minutes.
tac
Radioactivity concentrations for each frame.
Value
The cumulative integral of radioactivity.
Author(s)
Granville J Matheson, mathesong@gmail.com
Examples
data(pbr28)
tac <- pbr28$tacs[[2]]$WB
dur <- pbr28$tacs[[2]]$Duration / 60
frame_integ <- frame_cumsum(dur, tac)
mathesong/kinfitr documentation built on Jan. 15, 2024, 11:07 p.m.
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View source: R/kinfitr_miscfuncs.R
| frame_cumsum | R Documentation |
Cumulative integral over frames
Description
This function uses the frame radioactivity values and durations to create a cumulative integral. It sums the multiple of radioactivity and duration for all frames preceding the current frame, and halves that of the current frame. This is an alternative to using the trapezoidal method.
Usage
frame_cumsum(dur, tac)
Arguments
dur |
Frame durations in minutes. |
tac |
Radioactivity concentrations for each frame. |
Value
The cumulative integral of radioactivity.
Author(s)
Granville J Matheson, mathesong@gmail.com
Examples
data(pbr28)
tac <- pbr28$tacs[[2]]$WB
dur <- pbr28$tacs[[2]]$Duration / 60
frame_integ <- frame_cumsum(dur, tac)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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