dataset05 {RJafroc} | R Documentation |
John Thompson FROC dataset
Description
This is referred to in the book as the "JT" dataset. It consists of 92 cases, 47 of which are diseased, interpreted in two treatments ("1" = CT images acquired for attenuation correction, "2" = diagnostic CT images), by nine radiographers using the FROC paradigm. Each case was a slice of an anthropomorphic phantom 47 with inserted nodular lesions (max 3 per slice). The maximum number of NLs per case, over the entire dataset was 7.
Usage
dataset05
Format
A list with 3 elements: $ratings
, $lesions
and $descriptions
; $ratings
contain 3 elements, $NL
, $LL
and $LL_IL
as sub-lists; $lesions
contain 3 elements, $perCase
, $IDs
and $weights
as sub-lists; $descriptions
contain 7 elements, $fileName
, $type
, $name
,
$truthTableStr
, $design
, $modalityID
and $readerID
as sub-lists;
rating$NL
, num [1:2, 1:9, 1:92, 1:7], ratings of non-lesion localizations, NLsrating$LL
, num [1:2, 1:9, 1:47, 1:3], ratings of lesion localizations, LLsrating$LL_IL
NA, this placeholder is used only for LROC datalesions$perCase
, int [1:47], number of lesions per diseased caselesions$IDs
, num [1:47, 1:3], numeric labels of lesions on diseased caseslesions$weights
, num [1:47, 1:3], weights (or clinical importances) of lesionsdescriptions$fileName
, chr, "dataset05", base name of dataset in 'data' folderdescriptions$type
, chr "FROC", the data typedescriptions$name
, chr "THOMPSON", the name of the datasetdescriptions$truthTableStr
, num [1:2, 1:9, 1:92, 1:4], truth table structuredescriptions$design
, chr "FCTRL", study design, factorial datasetdescriptions$modalityID
, chr [1:2] "1" "2", treatment labelsdescriptions$readerID
, chr [1:4] "1" "2" "3" "4", reader labels
References
Thompson JD Hogg P, et al. (2014) A Free-Response Evaluation Determining Value in the Computed Tomography Attenuation Correction Image for Revealing Pulmonary Incidental Findings: A Phantom Study. Academic Radiology, 21 (4): 538-545.
Examples
str(dataset05)
PlotEmpiricalOperatingCharacteristics(dataset = dataset05, opChType = "wAFROC")$Plot