ecg-dicom-web-viewer

This library allows viewing an ECG file in DICOM format in web view.


- NPM: https://www.npmjs.com/package/ecg-dicom-web-viewer

Installation

This module is distributed via [npm][npm-url] which is bundled with [node][node] and
should be installed as one of your project's dependencies:

``js
// To install the newest version
npm install --save ecg-dicom-web-viewer
`

Example

1. Once installed import the project.

`js
// Import
import {
ReadECG, //Optional.
SOP_CLASS_UIDS, //Optional.
WAVE_FORM_BITS_STORED, //Optional.
KEY_UNIT_INFO, //Optional.
SPLINE, //Optional.
DicomECGViewer, //Principal.
} from "ecg-dicom-web-viewer";
`

2. Instantiate the new class with the necessary data and create the view.

`js
//Load view:
let viewer = new DicomECGViewer(
byteArray, //Data array ECG (XMLHttpRequest response array or...local open data)
divView, //Div where to draw the view
viewportIndex //View number, since you can have several views.
);
viewer.loadCanvas(); // Load canvas view.
``

Result

Documentation

Currently it works:

• Sop12LeadECGWaveformStorage: '1.2.840.10008.5.1.4.1.1.9.1.1', --> YES


• GeneralECGWaveformStorage: '1.2.840.10008.5.1.4.1.1.9.1.2', --> YES


• AmbulatoryECGWaveformStorage: '1.2.840.10008.5.1.4.1.1.9.1.3', --> YES


• HemodynamicWaveformStorage: '1.2.840.10008.5.1.4.1.1.9.2.1', --> YES


• CardiacElectrophysiologyWaveformStorage: '1.2.840.10008.5.1.4.1.1.9.2.1', --> YES

The next available classes are as follows:

Class DicomECGViewer

- constructor(dataDICOMarrayBuffer, idView, nameView)

dataDICOMarrayBuffer DICOM DCM ECG Array Buffer.

idView Draw ID View. Recomended a div.

nameView Identifier of the view you want to put, in case you have several views, default 0.

- loadCanvas()

Main method, draws the canvas and its entire view.

Class ReadECG

- ReadECG(this.dataDICOMarrayBuffer, '', opts)

Receives a dataSet data structure and returns a readable array.

optsspeed: 25, amplitude: 10, applyLowPassFilter: true

- getWaveform()

Read the arraydicombuffer and return legible data.

- getInfo()

Read the arraydicombuffer and return information data, example: BPM, Name, Duration ECG...

Static Constants

SOP_CLASS_UIDS - SOP UID of ECG types and graph measurements.

WAVE_FORM_BITS_STORED - Accuracy and quality of the recorded signal.

KEY_UNIT_INFO - These are the data to be displayed/read from the ECG. Example: QTC INTERVAL, QRS AXIS, P DURATION etc...

SPLINE - Generates interpolation in the ECG view with a spline, enabled by default, may affect performance.

Class GenericCanvas

It is the generic class for the canvas, it contains the values ​​of the number of views, canvas size, rows, columns, grid size...

Class DrawECGCanvas extends GenericCanvas

This class renders the data, both the grid and the view, it also contains the button events.

Features

• Improve canvas scrolling performance.