Experimental validation of a convolution- based ultrasound image formation model using a planar arrangement of micrometer-scale scatterers

Gyöngy, Miklós; Makra, Ákos

doi:10.1109/tuffc.2015.007027

Cited by 6 publications

(4 citation statements)

References 29 publications

(32 reference statements)

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“…Previous work has shown that a collection of polystyrene microspheres aligned on a planar surface may be used to investigate the validity of the shift-invariant convolution model [8]. This in turn may be used to assess the performance of image restoration methods.…”

Section: B Validation Of Image Restorationmentioning

confidence: 99%

“…This in turn may be used to assess the performance of image restoration methods. However, the method in [8] is limited as it does not allow precise positioning of the microspheres. Alternate possibilities are laser printing and transfer of patterns onto a phantom surface [9] or printing of filaments using low-cost 3Dprinting technology [10].…”

Section: B Validation Of Image Restorationmentioning

confidence: 99%

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Validation of image restoration methods on 3D-printed ultrasound phantoms

Füzesi

Basarab

Cserey

et al. 2017

2017 IEEE International Ultrasonics Symposium (IUS)

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The resolution of ultrasound images is limited by the bandwidth of the imaging system and the features of the propagating medium. Using certain assumptions, image restoration can recover out-of-bandwidth data and improve resolution. Several resolution improvement methods have been reported in the literature. However, due to the lack of ground truth, their evaluation on experimental data remains an open issue. Indeed, to evaluate the performance of such methods, knowledge of the scattering function is necessary. Usually this is achieved with numerical simulations, since in traditional phantoms the exact distribution of scatterers is unknown. In the current work, based on a 3D-printed phantom, the feasibility of the evaluation of deconvolution is investigated. The deconvolution method used lp-norm-regularization terms with p=0.5 and p=2. Knowledge of the scattering function allows comparison of the deconvolved images with the ground truth. Thus, using the scattering function and the originally acquired B-mode image, performance of image restoration methods could be evaluated quantitatively through comparison of root mean square error and full width half maximum values. Preliminary results demonstrate the benefits of knowing the scattering function during experimental testing of image restoration methods. In summary, the current work shows the potential of an experimental method for evaluating the extent to which an image restoration method provides a faithful rendering of the underlying scattering structure.

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Section: B Validation Of Image Restorationmentioning

confidence: 99%

Section: B Validation Of Image Restorationmentioning

confidence: 99%

Validation of image restoration methods on 3D-printed ultrasound phantoms

Füzesi

Basarab

Cserey

et al. 2017

2017 IEEE International Ultrasonics Symposium (IUS)

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“…The fields of application of the system span from vector Doppler investigations [8]- [12] to motion estimation [13]- [16], from nonlinear contrast imaging [17]- [19] to tissue characterization [20]- [22]. The system was also employed to develop innovative beamforming schemes to improve the image quality [23], [24] to compensate for the refraction induced by skull bone [25]- [27] as well as to validate novel ultrasound image formation models [14], [28].…”

Section: Introductionmentioning

confidence: 99%

ULA-OP 256: A 256-Channel Open Scanner for Development and Real-Time Implementation of New Ultrasound Methods

Boni

Bassi

Dallai

et al. 2016

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

130

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Open scanners offer an increasing support to the ultrasound researchers who are involved in the experimental test of novel methods. Each system presents specific performance in terms of number of channels, flexibility, processing power, data storage capability, and overall dimensions. This paper reports the design criteria and hardware/software implementation details of a new 256-channel ultrasound advanced open platform. This system is organized in a modular architecture, including multiple front-end boards, interconnected by a high-speed (80 Gb/s) ring, capable of finely controlling all transmit (TX) and receive (RX) signals. High flexibility and processing power (equivalent to 2500 GFLOP) are guaranteed by the possibility of individually programming multiple digital signal processors and field programmable gate arrays. Eighty GB of on-board memory are available for the storage of prebeamforming, postbeamforming, and baseband data. The use of latest generation devices allowed to integrate all needed electronics in a small size ( 34 cm ×30 cm ×26 cm). The system implements a multiline beamformer that allows obtaining images of 96 lines by 2048 depths at a frame rate of 720 Hz (expandable to 3000 Hz). The multiline beamforming capability is also exploited to implement a real-time vector Doppler scheme in which a single TX and two independent RX apertures are simultaneously used to maintain the analysis over a full pulse repetition frequency range.

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“…, also making it possible to test new imaging modalities and beamforming techniques27,28,29,30,31,32,33 .…”

mentioning

confidence: 99%

An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging

Matrone

Ramalli

Savoia

et al. 2017

JoVE

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The possibility to perform an early and repeatable assessment of imaging performance is fundamental in the design and development process of new ultrasound (US) probes. Particularly, a more realistic analysis with application-specific imaging targets can be extremely valuable to assess the expected performance of US probes in their potential clinical field of application.The experimental protocol presented in this work was purposely designed to provide an application-specific assessment procedure for newlydeveloped US probe prototypes based on Capacitive Micromachined Ultrasonic Transducer (CMUT) technology in relation to brain imaging.The protocol combines the use of a bovine brain fixed in formalin as the imaging target, which ensures both realism and repeatability of the described procedures, and of neuronavigation techniques borrowed from neurosurgery. The US probe is in fact connected to a motion tracking system which acquires position data and enables the superposition of US images to reference Magnetic Resonance (MR) images of the brain. This provides a means for human experts to perform a visual qualitative assessment of the US probe imaging performance and to compare acquisitions made with different probes. Moreover, the protocol relies on the use of a complete and open research and development system for US image acquisition, i.e. the Ultrasound Advanced Open Platform (ULA-OP) scanner.The manuscript describes in detail the instruments and procedures involved in the protocol, in particular for the calibration, image acquisition and registration of US and MR images. The obtained results prove the effectiveness of the overall protocol presented, which is entirely open (within the limits of the instrumentation involved), repeatable, and covers the entire set of acquisition and processing activities for US images.

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Experimental validation of a convolution- based ultrasound image formation model using a planar arrangement of micrometer-scale scatterers

Cited by 6 publications

References 29 publications

Validation of image restoration methods on 3D-printed ultrasound phantoms

Validation of image restoration methods on 3D-printed ultrasound phantoms

ULA-OP 256: A 256-Channel Open Scanner for Development and Real-Time Implementation of New Ultrasound Methods

An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging

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