DocumentCode :
3099283
Title :
A low cost open source high frame-rate high-frequency imaging system
Author :
Brown, J.A. ; Leadbetter, Jeff ; Leung, Martin ; Bezanson, A. ; Adamson, Rob
Author_Institution :
Biomed. Eng., Dalhousie Univ., Halifax, NS, Canada
fYear :
2013
fDate :
21-25 July 2013
Firstpage :
549
Lastpage :
552
Abstract :
In this paper a low cost open source approach to high-frequency ultrasound imaging is described. This complete imaging system is based around four core components: A single-element geometrically focused imaging transducer, a low cost high frame-rate mechanical scanner, a field programmable gate array (FPGA) controlled pulser-receiver unit, and a data acquisition system running open source interface software. The single-element imaging transducer is spherically curved composite based on Lithium Niobate that has a centre frequency of 45 MHz, a bandwidth of 65%, and an insertion loss of -19dB. The mechanical scanning mechanism is based on a 45 mm long PZT bimorph attached to an extension arm. The mechanism can scan up to a 10 mm displacements at 100 Hz and is driven with a low cost Arduino microcontroller. The mechanism is mounted in an enclosed probe holder filled with deionized water. The FPGA accurately controlling the variable timing of the pulser-receiver unit is a Xilinx Virtex V and the data acquisition hardware consists of an off the shelf AlazarTech PCIe digitizing card and a PC. The hardware communication, GUI/plotting libraries, and data collection is all controlled with an open source Python application we have named OpenHiFUS.
Keywords :
acoustic receivers; composite materials; data acquisition; field programmable gate arrays; lithium compounds; ultrasonic imaging; ultrasonic transducers; Arduino microcontroller; FPGA controlled pulser-receiver unit; GUI-plotting libraries; LiNbO3; OpenHiFUS; composite; data acquisition hardware; data acquisition system; deionized water; field programmable gate array; frequency 100 Hz; frequency 45 MHz; hardware communication; high frame-rate mechanical scanner; lithium niobate; mechanical scanning mechanism; open source Python application; open source high frame-rate high-frequency imaging system; open source interface software; single-element geometrically focused imaging transducer; ultrasound imaging; Arrays; Data acquisition; Imaging; Probes; Software; Transducers; Ultrasonic imaging; high frequency ultrasound; low cost; open source;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
ISSN :
1948-5719
Print_ISBN :
978-1-4673-5684-8
Type :
conf
DOI :
10.1109/ULTSYM.2013.0142
Filename :
6725177
Link To Document :
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