1. MCEN 5208 – October 11, 2004 Transducer Optimization for Echo-Particle Image Velocimetry Dawn Williams, MS/PhD student Dr. Robin Shandas, Assoc. Prof University of Colorado Mechanical Engineering Department

2. MCEN 5208 – October 11, 2004 Introduction Opaque Flow Imaging Techniques: –Doppler Ultrasound –MRI Velocimetry –Nuclear Imaging: PET and SPECT –Speckle and Speckle-Tracking Ultrasound –Echo-PIV

3. MCEN 5208 – October 11, 2004 Graphic Used With Permission 2004 © Hairong Zheng

4. MCEN 5208 – October 11, 2004 Benefits Flow characterization: –Cardiac Vortex Dynamics (heart) –Fluid Dynamics (pulmonary artery, aortic arch, carotid artery, etc.) –Shear Stress (arteries, etc.) –Mechanics (pulmonary artery, etc.)

5. MCEN 5208 – October 11, 2004 Objective Design, fabricate, and test a phased array transducer optimized for Echo-PIV applications. Methodology: Experimental (some optimization analysis with MatLAB)

6. MCEN 5208 – October 11, 2004 Schedule

7. MCEN 5208 – October 11, 2004 Thank you