Hari Prashanth

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Hari Prashanth

• Research Advisors Dr.Gregory Auner
• Dr.Mark Haacke

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Background

• Under Grad Electronics with specialization in
• Bio-instrumentation, Micro processors and micro
  controllers, sensors and electronic devices
  
• Masters Electrical engineering
• Image and signal processing, Magnetic resonance
  imaging
  
• Research Interest Flow imaging and
  quantification techniques
  
• Project involved To quantify velocity in a U-
  tube and track the path of Escherichia coli
  (E-coli) bacteria in water flowing in the U-
  tube

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• Use of Phase contrast MRA to quantify velocity
  through the U-tube
  
• Mean percent error for the measured flow rates
  was found to 4.35 at the Inlet and 5.18 at the
  Outlet
  
• Effects of acceleration seen at the outlet

Flow phantom
Phase map
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• Miniscule particles (polystyrene beads) of the
  same size of bacteria were used as a means to
  mimic the effect of bacteria
  
• Susceptibility effects of the beads causes rapid
  signal loss (dephasing effect)
  
• For a concentration of 120microlitre beads the
  SNR dropped by 54 at echo time 5ms in the
  stationery frame
  

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• Next step..
• Use of True FISP sequence to take snap shots of
  the entire phantom (coronally) with a temporal
  resolution of about 780ms-1.5s per frame after
  injecting the beads
• Short term Career goal
• To gain more knowledge and hone my skills in the
  field of MRI with respect to fast flow imaging
  techniques and Image and signal processing
  domain, either industrially or academically