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efferent-dicom

v1.3.0

Published

DICOM parser/writer for browser and Node.js

Downloads

34

Vulnerabilities

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Links

Git

Maintainers

jaime-efferentjaime-efferent

Keywords

dicomdicom-imagesdicom-filesdicomjs

Readme

Efferent.Dicom

npm version npm downloads GitHub stars

Javascript library for reading and writing DICOM files in desktop, cloud and browser applications. The following frameworks are supported:

  • Browser (Javascript)
  • NodeJS ESM
  • NodeJS CJS

API Overview

Main classes

  • DicomReader - DICOM reader and parser, with image extraction capabilities
  • DicomWriter - DICOM creator and serializer

Ancillary

  • DicomElement - Main building block for DICOM files
  • DICOM_TAG - Collection constants for commonly used DICOM tags
  • DicomDictionary - Contains VR and description for most used DICOM tags
  • PixelSpacing - Used for calibration purposes

Usage

Browser applications

Add a reference to the script into your html header section:

<head>
    <script src="Efferent.Dicom.js"></script>      <!-- Full     -->
    <script src="Efferent.Dicom.min.js"></script>  <!-- Minified -->
</head>

If preferred, you can use a CDN url like:

<head>
    <script src="https://cdn.jsdelivr.net/npm/efferent-dicom@1/dist/Efferent.Dicom.js"></script>      <!-- Full     -->
    <script src="https://cdn.jsdelivr.net/npm/efferent-dicom@1/dist/Efferent.Dicom.min.js"></script>  <!-- Minified -->
</head>

You can also import the library using bundlers such as Webpack, Rollup, or Vite.

NodeJS

The library is published on npm as efferent-dicom.

ESM (ECMAScript Modules)
If your project uses "type": "module" in package.json or has .mjs files:

import { DicomReader, DICOM_TAG as TAG } from 'efferent-dicom';

CommonJS (require syntax)
If your project uses the default CommonJS module system:

const { DicomReader, DICOM_TAG: TAG } = require('efferent-dicom');

Note

  • In CJS, destructuring syntax uses DICOM_TAG: TAG to rename the constant.
  • In ESM, you can directly alias using as TAG.

Example

import fs from 'fs';
import { DicomReader, DICOM_TAG as TAG } from 'efferent-dicom';

const data = fs.readFileSync('example.dcm');
const parser = new DicomReader(new Uint8Array(data.buffer));
console.log(parser.DicomTags[TAG.PATIENT_NAME]);

Typescript declaration file (d.ts)

If working with typescript, install efferent-dicom npm module in your package.json. This way, TypeScript automatically finds the right .d.ts whether the developer is using:

  • Node: import { something } from "efferent-dicom";
  • Browser build: import "efferent-dicom/browser";

If not using npm packages, include Efferent.Dicom.d.ts in your tsconfig.json file:

    "include": [
        "./lib/Efferent.Dicom.d.ts",
        // Other files
    ]

Demos

There are two demo applications, included in this repository:

NodeJS

Run node/dicomdump.js to print in the console detailed DICOM tags, using the command:

node ./demo/node/dicomdump.js <dicom file>

Browser

Open demo/html/index.html for an interactive demo that can read a DICOM file (.dcm extension), show a summary and a picture (only for .50 JPEG transfer syntax), as well as detailed DICOM tags

alt text