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Hari Prashanth

Hari Prashanth. Research Advisors: Dr.Gregory Auner Dr.Mark Haacke. Background. Under Grad :Electronics with specialization in: Bio-instrumentation, Micro processors and micro controllers, sensors and electronic devices Masters: Electrical engineering

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Hari Prashanth

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  1. Hari Prashanth Research Advisors: Dr.Gregory Auner Dr.Mark Haacke

  2. 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

  3. 42 in Inlet Outlet • 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

  4. Echo time 5ms Reference image Bead concentration-120microlitre • 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

  5. 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

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