Full-Matrix Phase Shift Migration Method for Transcranial Ultrasonic Imaging

Jiang, Chen; Li, Ying; Xu, Kailiang; Ta, Dean

doi:10.1109/tuffc.2020.3016382

Cited by 35 publications

(14 citation statements)

References 43 publications

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“…Specifically, the skull is known to defocus transmitted beams, leading to a systematic error in the estimated vessel diameters. Several approaches have been proposed to account for the cranial aberration and typically require access to data from individual transducer elements [51]- [53]. These techniques may not be applicable in cases where only post-beamformed data are available as is the case with most commercial devices.…”

Section: Appendix D Cranial Aberration Correctionmentioning

confidence: 99%

Deconvolution-Based Partial Volume Correction for Volumetric Blood Flow Measurement

Imaduddin

Sodini

Heldt

2022

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

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Ultrasound-based blood flow monitoring is vital in the diagnosis and treatment of a variety of cardiovascular and neurologic conditions. Finite spatial resolution of clinical color flow (CF) systems, however, has hampered measurement of vessel cross-section areas. We propose a resolution enhancement technique that allows reliable determination of blood flow in small vessels. We leverage sparsity in the spatial distribution of the frequency spectrum of routinely collected CF data to blindly determine the point spread function (PSF) of the imaging system in a robust manner. The CF data are then deconvolved with the PSF, and the volumetric flow is computed using the resulting velocity profiles. Data were collected from phantom blood vessels with diameters between 2 and 6 mm using a clinical ultrasound system at 2 MHz insonation frequency. The proposed method yielded a flow estimation bias of 0 mL/min, standard deviation of error (SDE) of 22 mL/min, and a root-mean-square error (RMSE) of 22 mL/min over a 150 mL/min range of mean flows. Recordings were also obtained in low SNR conditions using a skull mimicking element, resulting in an estimation bias of −13 mL/min, SDE of 23 mL/min, and an RMSE of 26 mL/min. The effect of insonation frequency was also investigated by obtaining recordings at 4.3 MHz, yielding an estimation bias of −16 mL/min, SDE of 16 mL/min, and an RMSE of 22 mL/min. The results indicate that our technique can lead to clinically acceptable flow measurements across a range of vessel diameters in high and low SNR regimes.

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Section: Appendix D Cranial Aberration Correctionmentioning

confidence: 99%

Deconvolution-Based Partial Volume Correction for Volumetric Blood Flow Measurement

Imaduddin

Sodini

Heldt

2022

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

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“…22 But, the computational cost of this cross-correlation strategy remains to be further improved. 23 For image reconstruction in the CPWCI modality, the conventional DAS beamforming was adopted to the plane wave imaging transmitting-receiving sequences in the time domain. 8 This time-domain beamforming framework is treated as a standard solution to the applications utilizing plane-wave insonification.…”

Section: Introductionmentioning

confidence: 99%

“…22 But, the computational cost of this cross-correlation strategy remains to be further improved. 23…”

Section: Introductionmentioning

confidence: 99%

The Spectrum-Beamformer for Conventional B-Mode Ultrasound Imaging System: Principle, Validation, and Robustness

et al. 2022

Self Cite

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Fast and efficient imaging techniques are important for real-time ultrasound imaging. The delay and sum (DAS) beamformer is the most widely-used strategy in focused ultrasound imaging (FUI) modality. However, calculating the time delays and coherently summing the amplitude response in DAS is computationally expensive and generally require a high-performance processor to realize real-time processing. In this study, an efficient spectrum beamformer, namely full-matrix capture (FMC)-stolt, is proposed in FUI system with a linear phased array. The imaging performance of FMC-stolt was validated with the point-scatter simulation and in vitro point and cyst phantoms, and then compared with that of five beamformers, that is, Multiline acquisition (MLA), retrospective transmit beamforming (RTB) in the FUI modality, as well as DAS, Garcia’s frequency-wavenumber (f-k), Lu’s f-k in the coherent plane wave compounding imaging (CPWCI) modality, under specific conditions. We show that the imaging performance of FMC-stolt is better than MLA-DAS in non-transmit-focal regions, and comparable with RTB-DAS at all imaging depths. FMC-stolt also shows better discontinuity alleviation than MLA and RTB. In addition, FMC-stolt has similar imaging characteristics (e.g., off-axis resolution, computational cost) as the f-k beamformers. The computational complexity and actual computational time indicate that FMC-stolt is comparable to Garcia’s f-k, Lu’s f-k, and faster than RTB and CPWCI-DAS if the transmitting numbers are close for FUI and CPWCI. The study demonstrates that the proposed FMC-stolt could achieve good reconstruction speed while preserving high-quality images and thus provide a choice for software beamforming for conventional B-mode ultrasound imaging, especially for hand-held devices with limited performance processors.

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“…The SAFT-C algorithm is a time-domain SAFT algorithm based on the delay-and-sum method that focuses reflections in accordance with delayed times [ 12 ]. Although a frequency-domain SAFT algorithm, such as the wavenumber [ 13 ] and migration algorithm [ 14 ], which manipulate the Fast Fourier Transform to calculate resulting images, show a faster calculation speed and better resolution [ 15 ], the time-domain SAFT algorithm seemed to be adapted in the MIRA device due to its simplicity and low-performance requirement on a microprocessor [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

3D Internal Visualization of Concrete Structure Using Multifaceted Data for Ultrasonic Array Pulse-Echo Tomography

Kwon

Joh

Chin

2021

Sensors

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This research proposes a 3D internal visualization using ultrasonic pulse-echo tomography technique to evaluate accurately the state of concrete structures for their efficient maintenance within a limited budget. Synthetic aperture focusing technique (SAFT) is used as a post-processing algorithm to manipulate the data measured by the ultrasonic pulse-echo technique. Multifaceted measurements improve the weakness of the existing ultrasonic pulse-echo tomography technique that cannot identify the area beyond a reflector as well as the area located far away from measuring surfaces. The application of apodization factor, pulse peak delay calibration and elimination of trivial response not only complements the weaknesses of the SAFT algorithm but also improves the accuracy of the SAFT algorithm. The results show that the proposed method reduces the unnecessary surface noise and improves the expressiveness of the reflector’s boundaries on the resulting images. It is expected that the proposed 3D internal visualization technique will provide a useful non-destructive evaluation tool in combination with another structure evaluation method.

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Full-Matrix Phase Shift Migration Method for Transcranial Ultrasonic Imaging

Cited by 35 publications

References 43 publications

Deconvolution-Based Partial Volume Correction for Volumetric Blood Flow Measurement

Deconvolution-Based Partial Volume Correction for Volumetric Blood Flow Measurement

The Spectrum-Beamformer for Conventional B-Mode Ultrasound Imaging System: Principle, Validation, and Robustness

3D Internal Visualization of Concrete Structure Using Multifaceted Data for Ultrasonic Array Pulse-Echo Tomography

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