dataset11 {RJafroc} | R Documentation |
Dobbins 1 FROC dataset
Description
This is referred to in the book as the "DOB1" dataset. Dobbins et al conducted a multi-institutional, MRMC study to compare the performance of digital tomosynthesis (GE's VolumeRad device), dual-energy (DE) imaging, and conventional chest radiography for pulmonary nodule detection and management. All study images were obtained with a flat-panel detector developed by GE. The case set consisted of 158 subjects, of which 43 were non-diseased and the rest had 1 - 20 pulmonary nodules independently verified, using with CT images, by 3 experts who did not participate in the observer study. The study used FROC paradigm data collection. There are 4 treatments labeled 1 - 4 (conventional chest x-ray, CXR, CXR augmented with dual-energy (CXR+DE), VolumeRad digital tomosynthesis images and VolumeRad augmented with DE (VolumeRad+DE).
Usage
dataset11
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 [1:4, 1:5, 1:158, 1:4], ratings of non-lesion localizations, NLsrating$LL
, num [1:4, 1:5, 1:115, 1:20], ratings of lesion localizations, LLsrating$LL_IL
NA, this placeholder is used only for LROC datalesions$perCase
, int [1:115], number of lesions per diseased caselesions$IDs
, num [1:115, 1:20], numeric labels of lesions on diseased caseslesions$weights
, num [1:115, 1:20], weights (or clinical importances) of lesionsdescriptions$fileName
, chr, "dataset11", base name of dataset in 'data' folderdescriptions$type
, chr "FROC", the data typedescriptions$name
, chr "DOBBINS-1", the name of the datasetdescriptions$truthTableStr
, num [1:4, 1:5, 1:158, 1:21], truth table structuredescriptions$design
, chr "FCTRL", study design, factorial datasetdescriptions$modalityID
, chr [1:4] "1" "2" "3" "4", treatment label(s)descriptions$readerID
, chr [1:5] "1" "2" "3" "4" ..., reader labels
References
Dobbins III JT et al. Multi-Institutional Evaluation of Digital Tomosynthesis, Dual-Energy Radiography, and Conventional Chest Radiography for the Detection and Management of Pulmonary Nodules. Radiology. 2016;282(1):236-250.
Examples
str(dataset11)