plotter

• Author sg langer July 2021

Intro

• Purpose: Proof of concept repository to do the elementary steps needed to

  • take an incoming DICOM SR
  • Crack its header and get patient and study demographics
  • use the above to fetch relevent prior SR's from a VNA
  • perform math or plotting
  • Send result to LBnet for injection into PS360

• Assumptions

  • this repo is standalone, but for POC purpose is running on a VM under the /home/site acct
  • host VM libs provided: dcmtk, python, pydicom, etc
  • host VM services provided: DICOM receiver, file watching service, VNA (Orthanc) for test data
  • We assumme we are downstrream of the LBnet SR normalizer and tags have ACR-RADS names

Sequence of Events

• a new SR hits port 9010, DICOM listener drops it into /home/site/pipeline/input
• fwatcher sees this and calls prepper.py
• prepper takes /input/DICOM_SR and
  • checks that its a DICOM SR, deletes and exits if not
  • if yes, makes a new folder under /tmp with that patientID
  • moves input/DICOM-SR to /tmp/patID
  • searches VNA for relevent prior SRs, puts them in /tmp/patID/priors,
  • mv patID/ to pipeline/pending, then exits
• dispatcher.py, this is where the magic happens
  • based on study description (and other info) decides what handler to call
  • handler does things, assembles the package as new SR and/or plot
  • moves that result to /pipeline/sending/patID
• fwatcher sees new folder in /pipeline/sending and calls sender.py
• sender.py sends the package to LBnet via a C-Store, purges /pipeline/pending/patID, exits

Details

• fwatcher: a python watchdog process that monitors a ROOT folder (and below) for new files drops. When it finds same it bases the action taken based on the folder the file was dropped into see fwatcher:call_analytic for details. Can be installed as a service or run manually.
• DICOM receiver info: AET=PLOTTER, port=9010
• ssh in: port=2200, site/sitePass
• Orthanc DICOM info: AET=
• Orthanc Web page: on virtualbox VM, http://localhost:8042

Websequence steps

• from here down paste into websequence.com

title Plotter Data flow

participant SRsource

participant LBnet

participant dcmRcv

participant input

participant pending

participant fwatcher

SRsource->LBnet: dcm SRsource

LBnet->LBnet: norm value \n names

LBnet->dcmRcv: dcm normed SR

dcmRcv->input: fileSys

fwatcher->input: event-handler new SR

fwatcher-->prepper: launches to SRsource

prepper->input: fileSys fetch SR

prepper->prepper: reads demog

prepper->VNA: dcm fetches priors

prepper->pending: fileSys new SR \n with priors

fwatcher->pending: event-handler new pkg

fwatcher-->dispatcher: launches to pkg

dispatcher->pending: fileSys fetch pkg

dispatcher->dispatcher: classify study type

dispatcher->handler: fileSys pkg

handler->handler: make plots

handler->sending: fileSys plots, results

fwatcher->sending: event_handler ready pkg

fwatcher-->sender: launches to pkg

sender->sending: fileSys results pkg

sender->LBnet: dcm or fileSys results

LBnet->PS360: webAPI