Development and validation of echo PIV
- 1.3k Downloads
The combination of ultrasound echo images with digital particle image velocimetry (DPIV) methods has resulted in a two-dimensional, two-component velocity field measurement technique appropriate for opaque flow conditions including blood flow in clinical applications. Advanced PIV processing algorithms including an iterative scheme and window offsetting were used to increase the spatial resolution of the velocity measurement to a maximum of 1.8 mm×3.1 mm. Velocity validation tests in fully developed laminar pipe flow showed good agreement with both optical PIV measurements and the expected parabolic profile. A dynamic range of 1 to 60 cm/s has been obtained to date.
KeywordsParticle Image Velocimetry Interrogation Window Ultrasound Beam Particle Image Velocimetry Technique Interrogation Window Size
This project was made possible in part by grants from the American Heart Association (Desert-Mountain Affiliate), National Science Foundation (EECS-0225405) and NIH (HL 67393, HL 072738). One of the authors (HB Kim) was supported by the post-doctoral fellowship program of the Korean Science and Engineering Foundation (KOSEF). We would also like to thank Craig Lanning and Scott Kirby for their technical assistance with the experimental apparatus and ultrasound system.
- Atkinson P, Woodcock JP (1982) Doppler ultrasound and its use in clinical measurement. Academic, New YorkGoogle Scholar
- Bamber J, Hasan P, Cook-Martin J, Rubim JM (1988) Parametric imaging of tissue shear and flow using B-scan decorrelation rate. J Ultrasound Med 7:s135Google Scholar
- Fillinger MF, Schwartz RA (1993) Volumetric blood flow measurement with color Doppler ultrasonography: the importance of visual clues. J Ultrasound Med 3:123–130Google Scholar
- Hart DP (1999) Super-resolution PIV by recursive local-correlation. J Visualiz 10:1–10Google Scholar
- Kremkau FW (1989) Diagnostic ultrasound. WB Saunders, PhiladelphiaGoogle Scholar
- Leen E (2001) Ultrasound contrast harmonic imaging of abdominal organs. Seminars Ultrasound CT MRI 22:11–24Google Scholar
- Okamoto K (1999) Checker board cross-correlation technique for PIV. In: Proc Of PSFVIP-2, Honolulu, no. PF116Google Scholar
- Sandrin L, Manneville S, Fink M (2001) Ultrafast two-dimensional ultrasonic speckle velocimetry: a tool in flow imaging. Appl Phys Lett 78:1155–1157Google Scholar
- Tio KK, Linan A, Lasheras JC, Ganan-Calvo AM (1993) On the dynamics of buoyant and heavy particles in a periodic Stuart vortex flow. J Fluid Mech 254:671–699Google Scholar
- Westerweel J (1993) Digital particle image velocimetry—theory and application. Dissertation, Delft University, The NetherlandsGoogle Scholar
- Willert CE, Gharib M (1991) Digital particle image velocimetry. Exp Fluids 10:181–193Google Scholar