• RecurringMeetings
• 2017-08-15

Recurring Meeting of Cleveland Clinic Core Team

Date: August 15, 2017

Time: 2:00 PM EST

Means: In person meeting

Attendees:

1. Ahmet Erdemir
2. Tyler Schimmoeller
3. Rici Morrill
4. Benjamin Landis
5. Robb Colbrunn
6. Tara Bonner

Agenda:

1. Discuss immediate action items from past meetings.

2. https://simtk.org/plugins/moinmoin/multis/RecurringMeetings/2017-08-01

3. Manuscripts update.
4. In vitro testing progress.

5. Modeling & simulation progress.

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

Immediate Action Items:

• Tyler
  • Develop list of surgical tool activities and experimentation specifications in the wiki.
  • Begin mechanical tissue testing mock up to develop testing specifications.
  • Continue writing manuscript on instrumented ultrasound.
  • Continue in vitro experimentation using instrumented ultrasound.
• Rici
  • Continue writing manuscript on in vivo testing data.
  • Assist in vitro experimentation using instrumented ultrasound.
• Ben
  • Continue developing modeling specifications.

  • Continue developing manuscript on scripted model generation & assembly.

• Ahmet
  • Compile haptics libraries and SofaHAPI.
  • Share list of prospective manuscripts list with team.
  • Identify access to high performance computing to run models.
  • Send Ben a published article on model generation for manuscript guidance.

Notes:

1. Discuss immediate action items from past meetings.
   • All action items were related to the recurring agenda items; refer to discussions below.
2. Manuscripts update.
   • Tyler has the first rough draft of manuscript on instrumented ultrasound. He will be reorganizing based on ASB 2017 poster.
   • Rici has been working on the draft of in vivo data manuscript. A few sections need to be completed for a first draft.
   • Ben will expand the ASB 2017 abstract and poster for the modeling manuscript. For an example, Ahmet will send him another automated model generation generation article published by the group.
3. In vitro testing progress.
   • Experimentation with instrumented ultrasound on remaining specimens will be completed this week. Specimens from younger donors will be tested when available.
   • Instrumented surgical tools are ready for extensive mock up tests. Robb and Tara noted that when multiple tools are used, Optotrak data collection frequency can be limited to about 30 Hz. They recommended the capacity to be able to turn off data collection for some tools. Ahmet noted that for motion quantification this frequency will likely be adequate. He asked if force data can be collected at higher frequencies. This is indeed the case, where Optotrak data are resampled based on last data point collected.
   • For experimentation with surgical tools, the group discussed protocol development:
     • For cutting, directionality (two orthogonal directions), depth and length will need be considered.
     • For retraction, initial incision need to be determined and the layers to pull should be decided upon. Retraction can be performed with dual retractors or with one side forceps and the other side retractor.
     • For peeling, an L-shape incision will likely to be made first. The layers to be peeled need to be determined.
     • The group will reach out to physicians and investigate surgical approaches to understand fundamentals of surgical procedures, in particular those relevant to soft tissue layers of extremities.
   • Mechanical testing accessories will be available next week for Tyler to start mock up tests for characterization of tissue.
     • For skin, uniaxial tensile testing in 3 orientations are planned. Images need to be collected during data acquisition.
     • For fat, unconfined compression testing will likely be sufficient
     • For muscle, uniaxial tensile testing along the direction of muscle fibers and confined and unconfined compression in the transverse direction are planned.
     • Interface testing may explore tensile stiffness of the tissue interfaces. Yet, more elaboration is needed to establish specifications.

4. Modeling & simulation progress.

   • Fundamental scripts to assemble models and generate template files for simulation are ready. For model development, segmentation will be the bottleneck.
   • Ben attempted to run a full extremity model. He was not successful on his computer due to the model size. The model had large number of degrees of freedom and access to faster computing will be needed. Ahmet will guide Ben to utilize high performance computing facilities at the Cleveland Clinic.
5. Decide immediate action items for next meeting.
   • See Immediate Action Items above.
6. Other.
   • The team presented four posters in ASB 2017. The experience was informative.