• RecurringMeetings
• 2015-10-27

Recurring Meeting of Cleveland Clinic Core Team

Date: October 27, 2015

Time: 2:00 PM EST

Means: In person meeting

Attendees:

1. Ahmet Erdemir
2. Tammy Owings
3. Robb Colbrunn
4. Tara Bonner

Agenda:

1. Discuss immediate action items from last meeting.
2. Additional issues for ultrasound system-force transducer integration.
3. Details of in vivo testing protocol.
4. Decide immediate action items for next meeting.
5. Other.

Immediate Action Items:

• Ahmet
  • Send the group information on ultrasound related metadata in DICOM headers.
• Tammy

  • Start documenting in vivo testing strategy in the Specifications/InVivoTesting wiki page.

  • Collect sample images with 3D ultrasound probe.
  • Propose exact locations for circumference and length measurements and for ultrasound imaging.
• Robb
  • Evaluate signal resolution needed for data synchronization through ECG channel.
  • Decide upon the load transducer, to be used with the ultrasound, based on its moment capacity.
• Tara
  • Continue interacting with Siemens to understand ultrasound triggering/gating through ECG.

• Tara & Robb

  • Start documenting ultrasound system and force transducer integration in the Infrastructure/InstrumentedUltrasound wiki page.

Notes:

1. Discuss immediate action items from last meeting.
   • Ahmet still needs to send the group information on ultrasound related metadata stored in DICOM headers.
   • Ahmet received mechanical drawings of the ultrasound probe 14L5. The drawings provide overall dimensions of the probe. He requested detailed information for the curvature of the outer casing of the probe.
   • Ahmet also requested a 3D ultrasound probe from Siemens; which was received. The group will have access to the probe for a week or two. Tammy will collect some images using this probe.
   • Tammy and Ahmet did not start the wiki page on in vivo testing strategy. Ahmet provided detailed information on how to edit the wiki. Tammy will start documentation on the wiki.
   • Robb talked to Electronics Core of Cleveland Clinic and identified that ECG signal is in mV range. He will design synchronization signal accordingly. The NI-DAQ sytem can typically work in the range of +/- 10 V but this can be scaled down, e.g. to +/- 1 V resulting in 30 microV resolution. Robb needs to look at whether the resolution of the signal after scaling down will be adequate for data synchronization. Robb and Tara also need to evaluate compatibility of load cell signal, which require 10 V range, and ECG, which will likely need 1 V range. They also need to ensure that signals are differential.
   • Tara will continue interacting with Siemens to explore strategies to gate ultrasound imaging to ECG signal.
   • Robb and Tara will need start documenting the ultrasound system and force transducers in the wiki.
2. Additional issues for ultrasound system-force transducer integration.
   • The group went over the drawing of the ultrasound probe, 14L5. Load cell may be 175 mm from the probe surface if it is along the longitudinal axis of the probe. It may be 75 mm from the probe surface if placed at the side.
3. Details of in vivo testing protocol.
   • Positioning for in vivo testing was decided upon. In all cases anatomical positioning will be used with the arm 45 degrees rotated from the trunk in the coronal plane.
   • Tammy requested exact locations for circumference and length measurements. Ahmet also noted that exact locations of ultrasound imaging and indentation need to be decided upon. He mentioned that the ultrasound should be done along circumference measurement regions. Tammy will come up with a plan for the group to evaluate.
4. Decide immediate action items for next meeting.
   • See Immediate Action Items above.
5. Other.
   • The group discussed implementation of force transducers on surgical tools. In particular, the challenges with instrumenting retractors and forceps were noted.
   • Ahmet informed the group that a dedicated room is available to carry out experimentations for the project.