Volumetric real-time imaging using a CMUT ring array

Jung Woo Choe, Ömer Oralkan, Amin Nikoozadeh, Mustafa Gencel, Douglas N. Stephens, Matthew O'Donnell, David Sahn, Butrus T. Khuri-Yakub

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

A ring array provides a very suitable geometry for forward-looking volumetric intracardiac and intravascular ultrasound imaging. We fabricated an annular 64-element capacitive micromachined ultrasonic transducer (CMUT) array featuring a 10-MHz operating frequency and a 1.27-mm outer radius. A custom software suite was developed to run on a PCbased imaging system for real-time imaging using this device. This paper presents simulated and experimental imaging results for the described CMUT ring array. Three different imaging methods-flash, classic phased array (CPA), and synthetic phased array (SPA)-were used in the study. For SPA imaging, two techniques to improve the image quality-Hadamard coding and aperture weighting-were also applied. The results show that SPA with Hadamard coding and aperture weighting is a good option for ring-array imaging. Compared with CPA, it achieves better image resolution and comparable signal-tonoise ratio at a much faster image acquisition rate. Using this method, a fast frame rate of up to 463 volumes per second is achievable if limited only by the ultrasound time of flight; with the described system we reconstructed three cross-sectional images in real-time at 10 frames per second, which was limited by the computation time in synthetic beamforming.

Original languageEnglish (US)
Article number6217568
Pages (from-to)1201-1211
Number of pages11
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume59
Issue number6
DOIs
StatePublished - 2012

Fingerprint

Ultrasonic transducers
phased arrays
synthetic arrays
transducers
ultrasonics
Imaging techniques
rings
coding
apertures
Ultrasonics
image resolution
beamforming
Image acquisition
flash
Beamforming
Image resolution
acquisition
Imaging systems
Image quality
computer programs

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics
  • Instrumentation

Cite this

Choe, J. W., Oralkan, Ö., Nikoozadeh, A., Gencel, M., Stephens, D. N., O'Donnell, M., ... Khuri-Yakub, B. T. (2012). Volumetric real-time imaging using a CMUT ring array. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 59(6), 1201-1211. [6217568]. https://doi.org/10.1109/TUFFC.2012.2310

Volumetric real-time imaging using a CMUT ring array. / Choe, Jung Woo; Oralkan, Ömer; Nikoozadeh, Amin; Gencel, Mustafa; Stephens, Douglas N.; O'Donnell, Matthew; Sahn, David; Khuri-Yakub, Butrus T.

In: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, Vol. 59, No. 6, 6217568, 2012, p. 1201-1211.

Research output: Contribution to journalArticle

Choe, JW, Oralkan, Ö, Nikoozadeh, A, Gencel, M, Stephens, DN, O'Donnell, M, Sahn, D & Khuri-Yakub, BT 2012, 'Volumetric real-time imaging using a CMUT ring array', IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 59, no. 6, 6217568, pp. 1201-1211. https://doi.org/10.1109/TUFFC.2012.2310
Choe JW, Oralkan Ö, Nikoozadeh A, Gencel M, Stephens DN, O'Donnell M et al. Volumetric real-time imaging using a CMUT ring array. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 2012;59(6):1201-1211. 6217568. https://doi.org/10.1109/TUFFC.2012.2310
Choe, Jung Woo ; Oralkan, Ömer ; Nikoozadeh, Amin ; Gencel, Mustafa ; Stephens, Douglas N. ; O'Donnell, Matthew ; Sahn, David ; Khuri-Yakub, Butrus T. / Volumetric real-time imaging using a CMUT ring array. In: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 2012 ; Vol. 59, No. 6. pp. 1201-1211.
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