cornerstoneDicomParserUTF8

Introduction

For the RadioLogic project started two years ago, I needed a DICOM parser supporting UTF8 encoded data.

RadioLogic is a teaching and assessment tool for radiologists, work in progress. It's a webapp optimized for use on iPAD's.

In a first step I succesfully patched Chris Hafey's distribution file dicomParser.js to parse the RadioLogic teaching files. I now took time to modify the source files, document the changes and build new distribution files.

For different reasons I prefer to present the results in my own way, instead of using a standard GitHub fork.

Changes

I tried to integrate the UTF8 support in the dicomParser with a minimum of code change. For this reason the modifications done are not optimal.

byteArrayParser.js

A new export function readFixedStringUTF8() is added. The uit8array to utf8 string conversion uses the native decodeURIComponent() function and is based upon the code published by Petka Antonow.

dataSet.js

The string() and text() functions are modified to to use the new readFixedStringUTF8 function if the DICOM data is encoded with ISO_IR 192.

index.html of dumpWithDataDictionary

The dragAndDrop FileHandler is replaced by a simple input FileReader to make it work on tablets (iCloud, iDrive, ...).

The stringIsAscii = isASCII(str) test is replaced by the assignment stringIsAscii = true.

The closing body tag is moved to the end of the file to make the code W3C compliant.

dataDictionary.js of dumpWithDataDictionary

The private RadioLogic tags with group number 4321 are added to the dictionary.

Installation