20171114 Meeting notes (AJB, HH, KC, HB, LM)

PURPOSE: determine the error or probability of filling central kspace with an anomalous beat during ECG-gated 2D PCMRI

NOTES/ACTION ITEMS:

• peform lit review (20171201 update: ongoing)

  • HH: center kspace issues (start with Markl 2001 and do a forward lit search)
  • AB: variability in flow in vivo (pulmonary flow most likely)

• simulate time-resolved data and kspace filling probabilities

  • :AB: to send out initial 'feasibility' code (put on SVN? 20171201 update-now on github here)
  • HB/LM/HH: time domain, vary kspace filling - probability of significant error? (>10%)
  • compute error bounds (what are confidence intervals? Monte Carlo simulation?)

• in vivo realtime measurements (to get a feel for variability)

  • AJB/HH: pulmonary/aortic real time measurements in volunteers?
  • KC: aquire some real time data on voluteers (time permitting)
  • AJB: does Lon or Ning have data already?

20171201 Meeting notes (AJB, HB, HH, LM)

UPDATES/NOTES/ACTION ITEMS

• All: sign up for github account and request to be a collaborator (or have alex invite you)

• All: upload your latest code and let's figure out how to delegate tasks

• All: Continue lit review... see 2017114 for additional notes

  • HH (and others) to put papers on server here: \10.254.136.37\data_imaging\cv_mri\beat_variability_literature\

• AJB: is 2D PCMRI typically breathhold or respiratory gated (also what is acquisition time/matrix)?

  • if breath-hold (which is typical), then usually ~4 lines per segment to keep it short

• ongoing efforts from 20171114 action item to simulate probability of significant error

  • HB/HH/LM: cycle through different starting points and linearly fill kspace?
  • LM/HH/HB: share progress on server here: \10.254.136.37\data_imaging\cv_mri\beat_variability_progress_20171201\

20171219 Meetings notes

UPDATES/NOTES/ACTION ITEMS

• All: test each other's code

• AJB: merge all code features into on base version

• All: review literature on server, if we breathhold, does respiratory variation matter?

• Acquire breath-held and/or free breathing real time flow data (in the new year)

FUTURE PROJECT IDEAS

• 20171114, 4D flow, multiple central kspace lines (beat beat) (KC)
• 20171114, collect inverse RECAR? at the same time as +RECAR (KC)
• 20171201, detect abnormal flow during aquisition (somehow automatically track the center of kspace and flow position, then observe for beat difference... similar to navigator gating)?