Conquest DICOM store node on Ubuntu


Ubuntu has reasonably up to date versions of the Conquest DICOM server in its repositories, so this makes installation very easy.

There are options to install with different databases – for OpenREM we’re not really going to use the database so the easiest option is to use SQLite:

sudo apt-get install conquest-sqlite

Basic configuration

Modify dgatesop.lst

Edit the dgatesop.lst file in the /etc/conquest-dicom-server folder, for example

sudo nano /etc/conquest-dicom-server/dgatesop.lst

And add the following line

XRayRadiationDoseSR 1.2.840.10008.   sop

It isn’t critical where it goes, but I tend to add it where it belongs between KeyObjectSelectionDocument and PETStorage. I also add in the spaces to make it line up, but again this is just for aesthetic reasons!

If you are pasting from the clipboard into nano from within Linux, use Shift-Ctrl-v. If you are using PuTTY in Windows to interact with Ubuntu, a right click on the mouse or Shift-Insert should paste the text into the terminal.

To save and exit from nano, use Ctrl-o (out), press return to confirm the filename and then Ctrl-x (exit).

Configure the Store SCP

Edit the dicom.ini file in the /etc/conquest-dicom-server folder, for example

sudo nano /etc/conquest-dicom-server/dicom.ini

Modify the following lines as required. The server name field – with the Conquest default of CONQUESTSRV1 – is the AE Title, so should be 16 characters or less and consist of letters and numbers with no spaces. It is case insensitive. The TCPPort is normally either 104, the standard DICOM port, or any number greater than 1023.

# Network configuration: server name and TCP/IP port#
MyACRNema                = CONQUESTSRV1
TCPPort                  = 11112

Again, save and exit.

If you’ve changed the AE Title and/or port, restart conquest:

sudo /etc/init.d/dgate restart

Testing basic configuration

Test the Store SCP by returning to OpenREM and navigating to Config -> DICOM network configuration.

Click to Add new store and enter the AE title and port you have set, along with a reference name.

Click to Submit, and you will return to the summary page which should inform you if the server is running.

Configure Conquest to work with OpenREM

The next stage is to configure Conquest to store the incoming object and ask OpenREM to process them.

Bash scripts

Create a bash script for each of RDSR, mammo, DX and Philips CT dose images, as required. They should have content something like the following. The examples that follow assume the files have been saved in the folder /etc/conquest-dicom-server but you can save them where you like and change the dicom.ini commands accordingly.

These scripts have a line in them to activate the virtual environment; this is done in the line . /var/dose/venv/bin/activate – you should change the path to your virtualenv or remove it if you have installed without using a virtualenv.

Eash script also has a line to delete the object after it has been imported – OpenREM can also do this by configuration, but the file will be written by the _conquest user, and OpenREM will not be running as that user. Therefore it is easier to have conquest delete the file. If you don’t want them to be deleted, remove or comment out that line (add a # character to the start of the line).

  • Radiation Dose Structured Reports
  • Use which ever editor you are comfortable with – a good choice might be nano. For example:
sudo nano /etc/conquest-dicom-server/
# usage: ./ rdsrfilepath

# Get the name of the RDSR as variable 'rdsr'

# Setup the python virtual environment - change to suit your path or remove if
# you are not using virtualenv
. /var/dose/venv/bin/activate

# Import RDSR into OpenREM ${rdsr}

# Delete RDSR file - remove or comment (#) this line if you want the file to remain
rm ${rdsr}

Save and exit, then set the script to be executable:

sudo chmod +x /etc/conquest-dicom-server/

And repeat for the other modality scripts below:

  • Mammography images
sudo nano /etc/conquest-dicom-server/
# usage: ./ mammofilepath


. /var/dose/venv/bin/activate ${mamim}

rm ${mamim}
sudo chmod +x /etc/conquest-dicom-server/
  • Radiography images (DX, and CR that might be DX)
sudo nano /etc/conquest-dicom-server/
# usage: ./ dxfilepath


. /var/dose/venv/bin/activate ${dxim}

rm ${dxim}
sudo chmod +x /etc/conquest-dicom-server/
  • Philips CT dose info images for Philips CT systems with no RDSR
sudo nano /etc/conquest-dicom-server/
# usage: ./ philipsctpath


. /var/dose/venv/bin/activate ${philipsim}

rm ${philipsim}
sudo chmod +x /etc/conquest-dicom-server/

Conquest configuration

At the end of the /etc/conquest-dicom-server/dicom.ini file, add the following lines. You will need to tailor them to save the file to an appropriate place. The _conquest user will need to be able to write to that location. You will also need to make sure the path to the scripts you just created are correct.

The example below assumes images will be saved in /var/lib/conquest-dicom-server/incoming/, which you can create as follows:

sudo mkdir /var/lib/conquest-dicom-server/incoming
sudo chown _conquest:_conquest /var/lib/conquest-dicom-server/incoming

Each instruction in the dicom.ini file below has a destroy instruction to delete Conquest’s copy of the file and to remove it from it’s database. This isn’t the version we’ve saved in incoming to process.

sudo nano /etc/conquest-dicom-server/dicom.ini
ImportConverter0  = ifequal "%V0008,0016","1.2.840.10008."; {save to /var/lib/conquest-dicom-server/incoming/%o.dcm; system /etc/conquest-dicom-server/ /var/lib/conquest-dicom-server/incoming/%o.dcm; destroy}
# Import arguments for GE CT - uses Enhanced SR instead of Radiation Dose SR
ImportConverter1  = ifequal "%V0008,0016","1.2.840.10008."; {save to /var/lib/conquest-dicom-server/incoming/%o.dcm; system /etc/conquest-dicom-server/ /var/lib/conquest-dicom-server/incoming/%o.dcm; destroy}

# MG images
ImportModality2   = MG
ImportConverter2  = save to /var/lib/conquest-dicom-server/incoming/%o.dcm; system /etc/conquest-dicom-server/ /var/lib/conquest-dicom-server/incoming/%o.dcm; destroy

# DX images
ImportModality3   = DX
ImportConverter3  = save to /var/lib/conquest-dicom-server/incoming/%o.dcm; system /etc/conquest-dicom-server/ /var/lib/conquest-dicom-server/incoming/%o.dcm; destroy
# CR images
ImportModality4   = CR
ImportConverter4  = save to /var/lib/conquest-dicom-server/incoming/%o.dcm; system /etc/conquest-dicom-server/ /var/lib/conquest-dicom-server/incoming/%o.dcm; destroy

# Philips CT
ImportConverter5  = ifequal "%V0008,0016","1.2.840.10008."; {save to /var/lib/conquest-dicom-server/incoming/%o.dcm; system /etc/conquest-dicom-server/ /var/lib/conquest-dicom-server/incoming/%o.dcm; destroy}

# Other objects
ImportConverter6  = destroy

Finally, restart conquest to make use of the new settings:

sudo /etc/init.d/dgate restart