ohif-viewer/platform/docs/docs/README.md

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> ATTENTION! You are looking at the docs for the `OHIF-v3` Viewer (third time is always a charm). If you're looking for the our `OHIF-v2` (React stable version) or OHIF-v1 (deprecated `Meteor` version) select it's version from the dropdown box in the top left corner
> of this page.

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# Introduction

The [Open Health Imaging Foundation][ohif-org] (OHIF) Viewer is an open source,
web-based, medical imaging viewer. It can be configured to connect to Image
Archives that support [DicomWeb][dicom-web], and offers support for mapping to
proprietary API formats. OHIF maintained extensions add support for viewing,
annotating, and reporting on DICOM images in 2D (slices) and 3D (volumes).



![OHIF Viewer Screenshot](./assets/img/OHIF-viewer.png)

<center><i>The <strong>OHIF Viewer v3</strong>: A general purpose DICOM Viewer (<a href="http://viewer.ohif.org/">Live Demo</a>)</center>


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## What's new in `OHIF-v3`
`OHIF-v3` is our second try for a React-based viewer, and is the third version of
our medical image web viewers from the start. The summary of changes include:

- Addition of workflow modes

	- Often, medical imaging use cases involves lots of specific workflows that re-use
	functionalities. We have added the capability of workflow modes, that enable people
	to customize user interface and configure application for specific workflow.
	- The idea is to re-use the functionalities that extensions provide and  create a workflow.
	Brain segmentation workflow is different from prostate segmentation in UI for sure; however, they share the segmentation tools that can be re-used.
	- Our vision is that technical people focus of developing extensions which provides
	core functionalities, and experts to build modes by picking the appropriate functionalities
	from each extension.


- Redux store has been removed from the viewer, and a cleaner, more powerful
- tailwind CSS
- End-to-end test suite


Below, you can find the gap analysis between the `OHIF-v2` and `OHIF-v3`:


{% include "./_gap_analysis.md" %}



## Where to next?


The Open Health Imaging Foundation intends to provide a simple general purpose
DICOM Viewer which can be easily extended for specific uses. If you find
yourself unable to extend the viewer for your purposes, please reach out via our
[GitHub issues][gh-issues]. We are actively seeking feedback on ways to improve
our integration and extension points.


Check out these helpful links:

- Ready to dive into some code? Check out our
  [Getting Started Guide](./development/getting-started.md).
- We're an active, vibrant community.
  [Learn how you can be more involved.](./development/contributing.md)
- Feeling lost? Read our [help page](./help.md).







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[ohif-org]: http://www.ohif.org
[ohif-demo]: http://viewer.ohif.org/
[dicom-web]: https://en.wikipedia.org/wiki/DICOMweb
[gh-issues]: https://github.com/OHIF/Viewers/issues
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