I am assisting a mobile rad practice with an Orthanc setup to replace their current proprietary DICOM relay arrangement.
The intention:
The tech chooses either the normal DICOM destination, or an alternate destination within the modality or modality software.
The local, mobile Orthanc instance then connects back to a central Orthanc instance over a cellular connection and sends the study only once.
The central Orthanc instance sends copies to the PACS or to multiple PACS based on the choice the technician made in the beginning.
Currently:
By pointing the DICOM destinations at Orthanc and setting different AE Titles, I was able to set up auto-routing with a LUA script on the laptop to accomplish this if I’m using direct DICOM to transmit from the laptop to the central instance.
However, when I switch to using SendToPeer instead of SendToModality, naturally routing by CalledAETitle breaks. So then I started looking at modifying the study, using some random DICOM tag to carry that information forward across the peer connection.
That’s not working out so well, likely due to my poor coding skills. 
“LuaScripting.cpp:772] Error while processing Lua events: Bad request”
What I’m hoping, is that there’s a simpler solution, something equivalent to the CalledAETitle that would apply when using a peer connection.
A tag like CalledPeerName or something, where I can have two peers in the config pointing at the same URL, but with different names.
Is there anything like that?
Scripts for reference only:
LUA on laptops:
function OnStoredInstance(instanceId, tags, metadata, origin)
print(‘DICOM Routing Started’)
– Extract the value of the “CalledAet” DICOM tag
local CalledAETVar = string.upper(origin[‘CalledAet’])
if string.find(CalledAETVar, ‘PACS_B’) ~= nil then
– Send PACS_B studies to PACS_ROUTE_B.
print(‘Called AE Title is PACS_B’)
print(‘Forwarding to PACS_ROUTE_B’)
Delete(SendToPeer(instanceId, ‘PACS_ROUTE_B’))
print(‘Sent to PACS_ROUTE_B, Study Deleted’)
end
if string.find(CalledAETVar, ‘PACS_A’) ~= nil then
– Send PACS_A studies to PACS_ROUTE_A.
print(‘Called AE Title is PACS_A’)
print(‘Forwarding to PACS_ROUTE_A’)
Delete(SendToPeer(instanceId, ‘PACS_ROUTE_A’))
print(‘Sent to PACS_ROUTE_A, Study Deleted’)
end
print(‘DICOM Routing Complete’)
end
LUA on central server:
function OnStoredInstance(instanceId, tags, metadata, origin)
print(‘DICOM Routing Started’)
– Extract the value of the “CalledAet” DICOM tag
local CalledAETVar = string.upper(origin[‘CalledAet’])
if string.find(CalledAETVar, ‘PACS_ROUTE_A’) ~= nil then
– Send PACS_ROUTE_A studies to both Client A and our PACS.
print(‘CalledAETVar is PACS_ROUTE_A’)
print(‘Forwarding to Client A’)
SendToModality(instanceId, ‘CLIENT_A_PACS’)
print(‘Sent to Client A’)
print(‘Sending to our PACS’)
Delete(SendToModality(instanceId, ‘MOBILE_PACS’))
print(‘Sent to our PACS, Study Deleted’)
end
if string.find(CalledAETVar, ‘PACS_ROUTE_B’) ~= nil then
– Send MOBILE_PACS studies to our PACS.
print(‘Sending to Mobile PACS’)
Delete(SendToModality(instanceId, ‘MOBILE_PACS’))
print(‘Sent to our PACS, Study Deleted’)
end
print(‘DICOM Routing Complete’)
end