MCEN 5208 – October 11, 2004

Transducer Optimization for Echo-Particle Image Velocimetry

Dawn Williams, MS/PhD studentDr. Robin Shandas, Assoc. Prof

University of ColoradoMechanical Engineering Department

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

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

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.)

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)

MCEN 5208 – October 11, 2004

ScheduleTasks Month

Aug Sept Oct Nov Dec Jan Feb Mar AprReview Project Abstracts prepared by CU-ME Faculty x xSelect Project xSubmit short proposal xPresent 15 minute project-proposal xLiterature Search & Textbook Review xDetermine Design Requirements (criteria & constraints) x xGenerate Prelim Concepts x xHouse of Quality x xSubmit Literature Search and Writeup Review xCreate Design xReview Design with Dr. Shandas xReview Design with Ultrasound Group xReview Design with Tetrad xFinalize Design and submit to Tetrad for Fabrication xPresent 1st Progress Report xFabrication (by Tetrad) x xTest new Ultrasonic Transducer x

Analyze results and compare to an off-the-shelf transducerPresent 2nd Progress Report xPresent Final Report xSubmit Final Report x

Project: Optimized Design of an Ultrasound Transducer for Echo-Particle Image Velocimetry (Echo-PIV) systems

MCEN 5208 – October 11, 2004

Thank you