Abstract
The Transverse Oscillation method has shown its commercial feasibility, providing the user with 2D velocity information. Todays implementation on commercial ultrasound platforms only support linear array transducers and are limited in depth. Extending the implementation to a phased array
transducer, vector velocity echocardiography will become possible. This paper describes the general modification made on the BK Medical 2202 Pro Focus UltraView using a 64 element phased array transducer and the simulations and measurements performed. The results show that velocities can be obtained at
depths even greater than 100 mm. Tests at depths of 72 mm and 82 mm with a peak velocity of 0.5 m/s, showed a relative mean bias ~Bvx that varied from 0 % and to 21 % and a relative mean standard deviation ~vx that varied from 18 % and to 51 %. The investigation showed an increasing bias with respect to
depth, which leaves room for optimization. Despite the bias, the method has shown to work and produce reliable results, and 2D velocity estimates are provided within the entire color-box down to a depth of more than 100 mm making vector velocity imaging possible in the entire heart.
transducer, vector velocity echocardiography will become possible. This paper describes the general modification made on the BK Medical 2202 Pro Focus UltraView using a 64 element phased array transducer and the simulations and measurements performed. The results show that velocities can be obtained at
depths even greater than 100 mm. Tests at depths of 72 mm and 82 mm with a peak velocity of 0.5 m/s, showed a relative mean bias ~Bvx that varied from 0 % and to 21 % and a relative mean standard deviation ~vx that varied from 18 % and to 51 %. The investigation showed an increasing bias with respect to
depth, which leaves room for optimization. Despite the bias, the method has shown to work and produce reliable results, and 2D velocity estimates are provided within the entire color-box down to a depth of more than 100 mm making vector velocity imaging possible in the entire heart.
Original language | English |
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Title of host publication | Proceedings of IEEE International Ultrasonics Symposium |
Publisher | IEEE |
Publication date | 2012 |
Pages | 1890-1893 |
ISBN (Print) | 9781467345613 |
DOIs | |
Publication status | Published - 2012 |
Event | 2012 IEEE International Ultrasonics Symposium - The International Congress Center, Dresden, Germany Duration: 7 Oct 2012 → 10 Oct 2012 https://ieeexplore.ieee.org/xpl/conhome/6552247/proceeding |
Conference
Conference | 2012 IEEE International Ultrasonics Symposium |
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Location | The International Congress Center |
Country/Territory | Germany |
City | Dresden |
Period | 07/10/2012 → 10/10/2012 |
Internet address |
Keywords
- Arrays
- Estimation
- Imaging
- Oscillators
- Transducers
- Ultrasonic imaging
- Vectors