Abstract
We have proposed a new technique for visualization of an ultrasound fieldthat enables acquisition of Schlieren images by subtraction of two shadowgraphstaken in the presence and absence of ultrasound exposure. This technique can beeasily applied to other optical methods because there is no need to use aconventional Schlieren optics. This paper shows the possibility of applying thetechnique to microscopic observation of high-frequency ultrasound fields. Alight source of short pulsed light of 0.11 ns and a CCD camera with a 15 bitdynamic range were installed in an inverted-type microscope. High-frequencyultrasound fields of a miniature 20-MHz transducer for intravascular ultrasoundimaging and a 50-MHz wideband transducer were visualized using 4 and 10objective lenses. Observation results showed that the high-frequency fields weresuccessfully visualized at the maximum spatial resolution of 0.93 m.Transmission and reflection of pulsed ultrasound at a water-Plexiglas interfacewere also observed, and the acquired movie image of ultrasound propagationdemonstrated the importance of this technique for direct understanding ofcomplex acoustic fields.
| Original language | English |
|---|---|
| Title of host publication | 2010 IEEE International Ultrasonics Symposium, IUS 2010 |
| Pages | 829-832 |
| Number of pages | 4 |
| DOIs | |
| Publication status | Published - 2010 |
| Externally published | Yes |
| Event | 2010 IEEE International Ultrasonics Symposium, IUS 2010 - San Diego, CA, United States Duration: 2010 Oct 11 → 2010 Oct 14 |
Other
| Other | 2010 IEEE International Ultrasonics Symposium, IUS 2010 |
|---|---|
| Country | United States |
| City | San Diego, CA |
| Period | 10/10/11 → 10/10/14 |
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Keywords
- High frequency acoustic field
- optical visualization
- pressure measurements
- Schlieren photography
ASJC Scopus subject areas
- Acoustics and Ultrasonics
Cite this
Microscopic visualization of high-frequency ultrasound fields using a newmethod of Schlieren photography. / Kudo, Nobuki; Sanbonmatsu, Yoshiaki; Shimizu, Koichi.
2010 IEEE International Ultrasonics Symposium, IUS 2010. 2010. p. 829-832 5935599.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Microscopic visualization of high-frequency ultrasound fields using a newmethod of Schlieren photography
AU - Kudo, Nobuki
AU - Sanbonmatsu, Yoshiaki
AU - Shimizu, Koichi
PY - 2010
Y1 - 2010
N2 - We have proposed a new technique for visualization of an ultrasound fieldthat enables acquisition of Schlieren images by subtraction of two shadowgraphstaken in the presence and absence of ultrasound exposure. This technique can beeasily applied to other optical methods because there is no need to use aconventional Schlieren optics. This paper shows the possibility of applying thetechnique to microscopic observation of high-frequency ultrasound fields. Alight source of short pulsed light of 0.11 ns and a CCD camera with a 15 bitdynamic range were installed in an inverted-type microscope. High-frequencyultrasound fields of a miniature 20-MHz transducer for intravascular ultrasoundimaging and a 50-MHz wideband transducer were visualized using 4 and 10objective lenses. Observation results showed that the high-frequency fields weresuccessfully visualized at the maximum spatial resolution of 0.93 m.Transmission and reflection of pulsed ultrasound at a water-Plexiglas interfacewere also observed, and the acquired movie image of ultrasound propagationdemonstrated the importance of this technique for direct understanding ofcomplex acoustic fields.
AB - We have proposed a new technique for visualization of an ultrasound fieldthat enables acquisition of Schlieren images by subtraction of two shadowgraphstaken in the presence and absence of ultrasound exposure. This technique can beeasily applied to other optical methods because there is no need to use aconventional Schlieren optics. This paper shows the possibility of applying thetechnique to microscopic observation of high-frequency ultrasound fields. Alight source of short pulsed light of 0.11 ns and a CCD camera with a 15 bitdynamic range were installed in an inverted-type microscope. High-frequencyultrasound fields of a miniature 20-MHz transducer for intravascular ultrasoundimaging and a 50-MHz wideband transducer were visualized using 4 and 10objective lenses. Observation results showed that the high-frequency fields weresuccessfully visualized at the maximum spatial resolution of 0.93 m.Transmission and reflection of pulsed ultrasound at a water-Plexiglas interfacewere also observed, and the acquired movie image of ultrasound propagationdemonstrated the importance of this technique for direct understanding ofcomplex acoustic fields.
KW - High frequency acoustic field
KW - optical visualization
KW - pressure measurements
KW - Schlieren photography
UR - http://www.scopus.com/inward/record.url?scp=80054062270&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80054062270&partnerID=8YFLogxK
U2 - 10.1109/ULTSYM.2010.5935599
DO - 10.1109/ULTSYM.2010.5935599
M3 - Conference contribution
AN - SCOPUS:80054062270
SN - 9781457703829
SP - 829
EP - 832
BT - 2010 IEEE International Ultrasonics Symposium, IUS 2010
ER -