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Paper Abstract and Keywords
Presentation 2019-07-16 10:30
High resolution ultrasound imaging based on frequency sweep and array signal processing
Ryoya Kozai, Nguyen Chi Hai, Jing Zhu, Norio Tagawa (Tokyo Metropolitan Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Ultrasound imaging is widely used not only for medical applications but also for nondestructive testing and environmental measurement.
We have previously proposed a super-resolution ultrasound imaging method that has a higher resolution than the transmission pulse width or the pulse width after pulse compression.
The basic principle of this method is to avoid transmission of echo coherency from multiple imaging targets and use transmission and reception of multiple pulses with different carriers so that each target echo spans a linear independent one-dimensional complex signal space.
The high resolution of this method is with respect to the propagation direction (range direction) of ultrasonic waves.
When applying this method to array transducers, variations can be considered according to the beamforming method.
Therefore, several derivative methods have been proposed in consideration of avoiding frame rate reduction due to multiple pulse transmissions and improving resolution in the lateral direction.
In this paper, we organize them and explain their features.
Keyword (in Japanese) (See Japanese page) 
(in English) ultrasound imaging / super-resolution / phase of carrier wave / array transducer / beamforming / harmonic imaging / /  
Reference Info. ITE Tech. Rep., vol. 43, no. 21, ME2019-83, pp. 1-4, July 2019.
Paper # ME2019-83 
Date of Issue 2019-07-09 (ME) 
ISSN Print edition: ISSN 1342-6893    Online edition: ISSN 2424-1970
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Conference Information
Committee ME  
Conference Date 2019-07-16 - 2019-07-16 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To ME 
Conference Code 2019-07-ME 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) High resolution ultrasound imaging based on frequency sweep and array signal processing 
Sub Title (in English)  
Keyword(1) ultrasound imaging  
Keyword(2) super-resolution  
Keyword(3) phase of carrier wave  
Keyword(4) array transducer  
Keyword(5) beamforming  
Keyword(6) harmonic imaging  
1st Author's Name Ryoya Kozai  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
2nd Author's Name Nguyen Chi Hai  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
3rd Author's Name Jing Zhu  
3rd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
4th Author's Name Norio Tagawa  
4th Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
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Speaker Author-4 
Date Time 2019-07-16 10:30:00 
Presentation Time 30 minutes 
Registration for ME 
Paper # ME2019-83 
Volume (vol) vol.43 
Number (no) no.21 
Page pp.1-4 
Date of Issue 2019-07-09 (ME) 

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