Connecting to OHIF server remotely ?

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Stephen Douglas Scotti

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Apr 28, 2020, 11:54:44 PM4/28/20
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I just installed an instance of OHIF on an UBUNTU server.  It is up and running, but I cannot connect to it remotely.  I can connect to it if I connect via a VNC connection and point the browser at localhost or 127.0.0.1.  I presume that that is related to the Node server not accepting connections except from the localhost.

I am sure there is a way to change that to 0.0.0.0, or whatever is necessary to accept connections from a remote host.   That is mainly for development purposes without any clinical images.

It is colocated with an instance of Orthanc, so I will want to configure that as well, but I see that that can be done through the env file and the config files, with some tweaking.  Also, speed is important, so if there are a couple of ways to connect OHIF to Orthanc, I would want the faster method.

Also, the setup we currently have is:

1.  A web app (PHP, MySQL, etc.), an Orthanc Server, and OHIF.  We are going to want some method to limit access to studies that a user is actually "authorized" to look at, probably based upon a unique ID

I just joined this forum and will probably have a number a questions.

Thanks.

Pedro Affonso

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Apr 29, 2020, 1:06:25 AM4/29/20
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I'm not a specialist in ohif, but i had a similar problem a while ago while testing the viewer. My workaround was to build a docker image out of the code i had changed, along with the correct app-config.js file in the Dockerfile that's already available in the repository.

Another option is to run the public image of ohif and change the app-config.js file (which is located in /usr/share/nginx/html/app-config.js inside the container) and replace it using docker cp

Marc McLean

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Apr 29, 2020, 7:14:46 AM4/29/20
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Stephen,

Is your server behind a firewall?

Marc

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Marc McLean

Stephen Douglas Scotti

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Apr 29, 2020, 8:23:38 AM4/29/20
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It is on a dedicated server, but the firewall is not active right now.  I can connect via ssh and vnc connection and then browse to localhost:3000, so it is running locally.  I actually do not see where there is a config file like app-config.js nor do I see where an nginx server is.

I followed the instructions here to install:

OHIF 2.0 installation

and had to install node.js, nvm and yarn to get it all working.  It does startup with yarn run dev, with quite a few warnings and such, but it works fine and connects to the public image server.  I know that there is away to specify listening ports and ip's for applications, so the base install in probably listening on localhost or 127.0.0.1, but on port 3000.

Marc McLean

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Apr 29, 2020, 8:51:05 AM4/29/20
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Can you connect remotely at http://<your_ip>:3000

Marc

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Marc McLean

Marc McLean

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Apr 29, 2020, 9:02:53 AM4/29/20
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Is port 3000 open on your Ubuntu server?
What does this show?
sudo ufw status
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Marc McLean

Stephen Douglas Scotti

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Apr 29, 2020, 9:51:41 AM4/29/20
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I was able to get it running and publicly accessible by:

1.  Stopping my native build I built with the instructions in the link in my previous post.
2.  Installing / running the Docker image:

docker pull ohif/viewer
# Downloaded newer image for ohif/viewer:latest
docker run -p 3000:80 ohif/viewer:latest

I am a newbie when it comes to running docker.  I have docker installed on UBUNTU.  If I want to do some development work, am I able to browse the files in the docker image and also modify them so that they persist, or will I need to use my build and somehow figure out how to configure it to be available publicly.  I do also have a running Orthanc instance, so I will want to configure OHIF to use the image database on the Orthanc server.

Once most of that is setup, I'm going to need to find a way to pre-process request for studies such that Orthanc and/or OHIF only display that studies that a user is authorized to see, with really 3 categories of users:

1.  Admin, can see the entire Orthanc archive, or possibly some subset based on a query to the Orthanc server.  The REST API for Orthanc allows you to make such queries in a number of ways, for example with tools/find, where you provide a JSON string of the items to filter on.

2.  Referring Physician.  Studies on Orthanc have searchable fields, e.g.:  So the Patient ID and Referring Physician ID's are unique, you could use that.  Otherwise, the StudyInstanceUID is supposedly globally unique, so it might be possible to use those to keep a list of which studies a user is authorized to view.  Within a single institution, search on the PatientID and the Referring doctor ID might suffice.

                    [ID] => 74518f67-e31ecfdc-880e84dc-f6a900c7-c3206219
                    [IsStable] => 1
                    [LastUpdate] => 20200426T233816
                    [MainDicomTags] => stdClass Object
                        (
                            [AccessionNumber] => 
                            [InstitutionName] => 
                            [ReferringPhysicianName] => LAST^FIRST^MIDDLE^ID
                            [StudyDate] => 
                            [StudyDescription] => 
                            [StudyID] => 512492059
                            [StudyInstanceUID] => 1.3.76.2.1.1.4.1.2.7211.512492059
                            [StudyTime] => 155425
                        )

                    [ParentPatient] => fa21ff2d-33e9b60a-daedf6a0-64d018da-682fd0a4
                    [PatientMainDicomTags] => stdClass Object
                        (
                            [PatientBirthDate] => 
                            [PatientID] => DEV0000001
                            [PatientName] => 
                            [PatientSex] => 
                        )

                    [Series] => Array
                        (
                            [0] => 4c9dac48-684b4dc8-696e4c39-07f57de0-faeca2bc
                            [1] => 3e2d7dd8-8767484b-9f30086d-1ed5f46a-34f0ab6b
                            [2] => ddae7fa0-7421cc1d-0a29822d-5d3a7c0c-4c1aa5a3
                            [3] => 705d9a40-77e4da23-d930f261-b2e7ba55-23b07064
                            [4] => da0c40e8-27c2efaf-c4cbb15f-29901035-f48b43c9
                        )

                    [Type] => Study
                )

3. Patient.

So I am really curious to know if there is a way to customize Orthanc and/or OHIF to server a subset of exams.

I've already figured out how to use the REST API to get the data set, and it is possible to view a single study in OHIF with just the uuid for the study.
But the OHIF viewer has a link back to the study list, which shows the entire database, at least with the default setup.

The OHIF viewer is relatively nice, although the Osimis Pro viewer seems a little faster and better in some ways. Unfortunately, I guess
that is going to be discontinued.

Thanks.

Augmented Reporting

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Jun 26, 2022, 5:42:35 PMJun 26
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