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DetectorChecker

Master: Develop:

Created by: Julia Brettschneider (original R code), Tomas Lazauskas (R package engineering), Oscar Giles (package development) and Wilfrid Kendall (testing and editing).

Overview

DetectorChecker is an R package to aid in the assessment of damage to CT scanners arising from exposure to high energy radiation. While the target application concerns CT scanners, this package can also be used to analyze screen damage arising from other sources.

Installation

To install from github you will need to have the devtools package installed.

In R run one of the following, depending on whether you want to build the package Vignettes, removing the # if you do not have devtools installed:

```

install.packages("devtools")

devtools::install_github("alan-turing-institute/DetectorChecker") ```

If you want to be able to view the DetectorChecker_user-guide Vignette you need to install with:

devtools::install_github("alan-turing-institute/DetectorChecker", build_vignettes = TRUE, build_opts = c("--no-resave-data", "--no-manual"))

Installing with the vignettes may be slow (~10 min)

Development version

```

install.packages("devtools")

devtools::install_github("alan-turing-institute/DetectorChecker", ref = "develop") ```

WebApp

The official release of the DetectorChecker WebApp is hosted at https://detectorchecker.azurewebsites.net.

The source code for the WebApp implementation can be found on GitHub: https://github.com/alan-turing-institute/DetectorCheckerWebApp.

Vignette

The user guide vignette provides detailed instructions for using the package and loading specific examples. Make sure you installed the package including vignette following the instructions above (see use of build_vignettes = TRUE in Section Installation) and then load the package followed by the vignette command:

library(detectorchecker) vignette("DetectorChecker_user-guide", package = "detectorchecker")

Manual

Detailed documentation is provided as a pdf. See also the DetectorChecker_user-guide (large html file, needs download).

Examples

DetectorChecker includes a number of example datasets for five detector types:

1. Pilatus

2. PerkinElmer

3. PerkinElmer Refurbished

4. PerkinElmer Cropped

5. Excalibur

To load an example dataset, either call:

``` library(detectorchecker)

Initiate a PerkinElmerFull detector object

detector <- create_detector("PerkinElmerFull")

Path of dataset

filepath <- system.file("extdata", "PerkinElmerFull", "BadPixelMapt1.bpm.xml", package = "detectorchecker")

Load a pixel matrix into the detector object

detector <- loadpixmatrix(detector = detector, filepath = filepath) ```

or load one of the examples by calling:

library(detectorchecker) data(PerkinElmerFull_exp_1)

which creates an appropriate detector module and loads an example pixel dataset.

For see the full list of example datasets call

data(package = "detectorchecker")

Citation

If you use DetectorChecker in your work please cite our package.

BibTeX:

@Misc{, title = {{DetectorChecker}: Assessment of damage to CT scanners}, author = {Tomas Lazauskas and Julia Brettschneider and Oscar Giles and Wilfrid Kendall}, url = {https://github.com/alan-turing-institute/DetectorChecker}, }

Getting help

If you found a bug or need support, please submit an issue here.

How to contribute

We welcome contributions! If you are willing to propose new features or have bug fixes to contribute, please submit a pull request here.