Conference paper
Experimental 3-D Vector Velocity Estimation with Row-Column Addressed Arrays
Experimental 3-D vector flow estimates obtained with a 62+62 2-D row-column (RC) array with integrated apodization are presented. A transverse oscillation (TO) velocity estimator is implemented on a 3.0 MHz RC array, to yield realtime 3-D vector flow in a cross-sectional scan plane at 750 frames per second.
The method is validated in a straight-vessel phantom (Ø = 8 mm) connected to a flow pump capable of generating timevarying carotid waveforms. The out-of-plane velocity component perpendicular to the cross section of the vessel and the crosssectional area is used to estimate volumetric flow rates. The flow rate measured from five cycles is 2.3 mL/stroke ± 0.1 mL/stroke giving a negative 9.7% bias compared to the pump settings.
It is concluded that 124 elements are sufficient to estimate 3-D vector flow, if they are positioned in a row-column wise manner.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2016 |
| Pages: | 1-4 |
| Proceedings: | 2016 IEEE International Ultrasonics Symposium |
| ISBN: | 1467398977 , 1467398985 , 9781467398978 and 9781467398985 |
| ISSN: | 19485727 |
| Types: | Conference paper |
| DOI: | 10.1109/ULTSYM.2016.7728399 |
| ORCIDs: | Holbek, Simon , Stuart, Matthias Bo and Jensen, Jørgen Arendt |
3D vector velocity flow estimation Array signal processing Estimation Focusing Oscillators RC array TO velocity estimator Transducers Ultrasonic imaging acoustic imaging flow measurement flow pump flow rate measurement frequency 3.0 MHz integrated apodization optical images out-of-plane velocity component pumps row-column addressed array straight-vessel phantom timevarying carotid waveform generation transverse oscillation velocity estimator velocity measurement volume measurement volumetric flow rate estimation
