Experimental evaluation of spectral-based quantitative ultrasound imaging using plane wave compounding

Quantitative ultrasound (QUS) based on backscatter coefficient (BSC) estimation has shown potential for tissue characterization. Beamforming using plane wave compounding has advantages for echographic, Doppler, and elastographic imaging; however, to date, plane wave compounding has not been experime...

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Vydané v:IEEE transactions on ultrasonics, ferroelectrics, and frequency control Ročník 61; číslo 11; s. 1824 - 1834
Hlavní autori: Salles, Sebastien, Liebgott, Hervé, Basset, Olivier, Cachard, Christian, Vray, Didier, Lavarello, Roberto
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States IEEE 01.11.2014
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Institute of Electrical and Electronics Engineers
Predmet:
Array signal processing
Beamforming
Compounding
Computer Science
Dynamics
Engineering Sciences
Estimation
Field of view
Imaging
Phantoms
Plane waves
Signal and Image Processing
Spatial resolution
Spectra
Transducers
Ultrasonic imaging
Ultrasound
Imagerie Ultrasonore
Labex PRIMES
Labex CELYA
reseau_international
categₛt2i
Pérou
ISSN:0885-3010, 1525-8955, 1525-8955
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Popis
Shrnutí:Quantitative ultrasound (QUS) based on backscatter coefficient (BSC) estimation has shown potential for tissue characterization. Beamforming using plane wave compounding has advantages for echographic, Doppler, and elastographic imaging; however, to date, plane wave compounding has not been experimentally evaluated for the purpose of BSC estimation. In this study, two BSC-derived parameters (i.e., the BSC midband fit and intercept) were estimated from experimental data obtained using compound plane wave beamforming. For comparison, QUS parameters were also estimated from data obtained using both fixed focus and dynamic receive beamforming. An ultrasound imaging system equipped with a 9-MHz center frequency, 64-element array was used to collect data up to a depth of 45 mm. Two gelatin phantoms with randomly distributed 20-μm inclusions with a homogeneous scatterer concentration and a two-region scatterer concentration were used for assessing the precision and lateral resolution of QUS imaging, respectively. The use of plane wave compounding resulted in accurate QUS estimation (i.e., bias in the BSC parameters of less than 2 dB) and relatively constant lateral resolution (i.e., BSC midband fit 10% to 90% rise distance ranging between 1.0 and 1.5 mm) throughout a 45 mm field of view. Although both fixed focus and dynamic receive beamforming provided the same performance around the focal depth, the reduction in SNR away from the focus resulted in a reduced field of view in the homogeneous phantom (i.e., only 28 mm). The lateral resolution also degraded away from the focus, with up to a 2-fold and 10-fold increase in the rise distance at 20 mm beyond the focal depth for dynamic receive and fixed focus beamforming, respectively. These results suggest that plane wave compounding has the potential to improve the performance of spectral-based quantitative ultrasound over other conventional beamforming strategies.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0885-3010
1525-8955
1525-8955
DOI:10.1109/TUFFC.2014.006543