Abstract
The synthetic aperture (SA) technique can be used for achieving real-time volumetric ultrasound imaging using
2-D row-column addressed transducers. This paper investigates SA volumetric imaging performance of an in-house
prototyped 3 MHz λ/2-pitch 62+62 element piezoelectric 2-D row-column addressed transducer array. Utilizing
single element transmit events, a volume rate of 90 Hz down to 14 cm deep is achieved. Data are obtained
using the experimental ultrasound scanner SARUS with a 70 MHz sampling frequency and beamformed using a
delay-and-sum (DAS) approach. A signal-to-noise ratio of up to 32 dB is measured on the beamformed images
of a tissue mimicking phantom with attenuation of 0.5 dB cm−1 MHz−1, from the surface of the probe to the
penetration depth of 300λ. Measured lateral resolution as Full-Width-at-Half-Maximum (FWHM) is between 4λ
and 10λ for 18 % to 65 % of the penetration depth from the surface of the probe. The averaged contrast is 13 dB
for the same range. The imaging performance assessment results may represent a reference guide for possible
applications of such an array in different medical fields
2-D row-column addressed transducers. This paper investigates SA volumetric imaging performance of an in-house
prototyped 3 MHz λ/2-pitch 62+62 element piezoelectric 2-D row-column addressed transducer array. Utilizing
single element transmit events, a volume rate of 90 Hz down to 14 cm deep is achieved. Data are obtained
using the experimental ultrasound scanner SARUS with a 70 MHz sampling frequency and beamformed using a
delay-and-sum (DAS) approach. A signal-to-noise ratio of up to 32 dB is measured on the beamformed images
of a tissue mimicking phantom with attenuation of 0.5 dB cm−1 MHz−1, from the surface of the probe to the
penetration depth of 300λ. Measured lateral resolution as Full-Width-at-Half-Maximum (FWHM) is between 4λ
and 10λ for 18 % to 65 % of the penetration depth from the surface of the probe. The averaged contrast is 13 dB
for the same range. The imaging performance assessment results may represent a reference guide for possible
applications of such an array in different medical fields
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE |
| Editors | Neb Duric, Brecht Heyde |
| Number of pages | 9 |
| Volume | 9790 |
| Publisher | SPIE - International Society for Optical Engineering |
| Publication date | 2016 |
| Article number | 97900Y |
| DOIs | |
| Publication status | Published - 2016 |
| Event | SPIE Medical Imaging 2016 - Town & Country Resort and Convention Cente, San Diego, United States Duration: 27 Feb 2016 → 3 Mar 2016 https://spie.org/conferences-and-exhibitions/past-conferences-and-exhibitions/medical-imaging-2016 |
Conference
| Conference | SPIE Medical Imaging 2016 |
|---|---|
| Location | Town & Country Resort and Convention Cente |
| Country/Territory | United States |
| City | San Diego |
| Period | 27/02/2016 → 03/03/2016 |
| Internet address |
Keywords
- 3-D ultrasound imaging
- 2-D row-column addressed transducer,
- Synthetic aperture (SA)