• RecurringMeetings
• 2016-07-05

Recurring Meeting of Cleveland Clinic Core Team - Multidisciplinary Simulation Center

Date: July 5, 2016

Time: 2:00 PM EST

Means: In person meeting

Attendees:

1. Ahmet Erdemir
2. Tammy Owings
3. Benjamin Landis
4. Tyler Schimmoeller
5. Robb Colbrunn
6. Tara Bonner
7. John-Eric Jelovsek (Multidisciplinary Simulation Center)

Agenda:

1. Discuss immediate action items from past meetings.

   • http://wiki.simtk.org/multis/RecurringMeetings/2016-06-28

2. Readiness for in vivo testing.
3. In vitro testing setup and specifications.

4. Modeling & simulation update.

5. Decide immediate action items for next meeting.
6. Other.

Immediate Action Items:

• Ahmet
  • Troubleshoot compilation of haptics library for SOFA.
  • Send team the link for data management test server for evaluation.
  • Work with Tyler and Tara to test weight compensation during force measurements.
  • Send in progress review presentation to Eric.
• Ben
  • Troubleshoot multi-layer model to get it working.
  • Return back to multi-layer model in FEBio.
• Tyler
  • Work with members of Li Laboratory to organize walk-in freezer for leg specimens.
  • Work on pulse train (synchronization and test identification signal) specifications to write it in ultrasound DICOM header.
  • Continue development of in vitro testing specifications.
• Robb
  • Continue working with Tyler for development of data collection system and software for cadaver experimentation using instrumented surgical tools.
• Tara
  • Document in vivo testing data file contents for users.
  • Update transformation matrices for ultrasound probe reflecting the addition of light shield for the force transducer.
  • Conduct validation tests to ensure proper measurements when using the force transducer.
• Eric
  • Communicate with Ben and Tyler to setup a tour of surgical simulation skills laboratory.
• All
  • Evaluate subject XML file contents.

Notes:

1. Discuss immediate action items from past meetings.
   • All action items were related to the recurring agenda items; refer to discussions below.
2. Readiness for in vivo testing.

   • Ahmet and Tyler met with Tara to discuss all the files associated with data collection (XML, tdms, state & config). They have a good understanding of the contents. Tara has been working on documenting these for reference.

   • Tara implemented multi-point calibration procedure for weight compensation. Tests need to be conducted to evaluate performance.
   • Tyler provided the updated CAD drawings of the ultrasound handle assembly to Tara. Tara will use these to obtain theoretical transformation matrices between the ultrasound probe, force transducer, and orientation sensor, need to be updated.
   • Tara fixed issues associated with the XML file. She cleaned up the XML tags, fixed storage of activity level and anthropometric measurements. She uploaded a sample file to the wiki.
   • Tara also identified and resolved the problem causing system freeze during data collection.
   • Tyler developed code to read DICOM and tdms files to extract the r-wave timing data and the pulse train data, respectively. He contacted Siemens to understand the r-wave timing data in relation to generated signal for synchronization and trial identification.
3. In vitro testing setup and specifications.
   • Tyler has been working with facilities to get work orders, including new paint for the room and activation of electric outlets. T-slot aluminum extrusions (80/20s) were ordered.
   • Tyler set up a meeting with members of Li Laboratory to organize walk-in freezer for leg specimens.
   • Robb came back from vacation. He will focus on identifying force sensors that better match expected load ranges and minimize transducer size. He will also focus on creating clones of the in vivo data collection software; one for incorporating Optotrak; the other for replacing instrumented ultrasound with instrumented surgical tools. While these efforts should wait a freeze on in vivo data collection software, he can start working on the design.

4. Modeling & simulation update.

   • Ben has had troubles getting multi-layer model work in SOFA. He is trying to understand contact formulation in SOFA to appropriately implement interactions between skin, fat, and muscle.
   • Ahmet asked Ben to return back to the FEBio model as multi-layer representation should be incorporated in there to serve as reference models. Previously, Ben had issue to get FEBio model run, specifically when using tetrahedral meshes with large deformations. In the meanwhile, he generated hexahedral meshes of simplified multi-layer geometry. He will test these in FEBio.
5. Ahmet and Ben tried to compile haptics interface to SOFA. They were not successful. Ahmet thought that this was due to how the source code is packaged for distribution. He will try compiling again after downloading source code for haptics plug-in directly. If needed, he will contact SOFA developers.
6. Decide immediate action items for next meeting.
   • See Immediate Action Items above.
7. Other.
   • None noted.