Full-Waveform Inversion for Breast Ultrasound Tomography Using Line-Shape Modeled Elements

Yuan, Yu; Zhao, Yue; Zhang, Nuomin; Xiao, Yang; Jin, Jing; Feng, Naizhang; Shen, Yi

doi:10.1016/j.ultrasmedbio.2022.12.004

Cited by 4 publications

(2 citation statements)

References 38 publications

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“…First, the in-plane focusing (directivity) of the transducers is not modeled due to the high aspect ratio of the transducers employed in ring-array USCT. Additional discussions about modeling the directivity in ring-array USCT, especially when the in-plane aperture is not significantly larger than the pixel size, can be found in [ 40 ] and [ 75 ]. Second, the transducer model is Cartesian grid-based and requires the use of nearest-neighbor interpolation when the transducer location does not coincide with the voxel size.…”

Section: Discussionmentioning

confidence: 99%

A Forward Model Incorporating Elevation-Focused Transducer Properties for 3-D Full-Waveform Inversion in Ultrasound Computed Tomography

Li,

Villa,

Duric

et al. 2023

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

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Ultrasound computed tomography (USCT) is an emerging medical imaging modality that holds great promise for improving human health. Full-waveform inversion (FWI)-based image reconstruction methods account for the relevant wave physics to produce high spatial resolution images of the acoustic properties of the breast tissues. A practical USCT design employs a circular ring-array comprised of elevation-focused ultrasonic transducers, and volumetric imaging is achieved by translating the ring-array orthogonally to the imaging plane. In commonly deployed slice-by-slice (SBS) reconstruction approaches, the 3-D volume is reconstructed by stacking together 2-D images reconstructed for each position of the ring-array. A limitation of the SBS reconstruction approach is that it does not account for 3-D wave propagation physics and the focusing properties of the transducers, which can result in significant image artifacts and inaccuracies. To perform 3-D image reconstruction when elevation-focused transducers are employed, a numerical description of the focusing properties of the transducers should be included in the forward model. To address this, a 3-D computational model of an elevation-focused transducer is developed to enable 3-D FWI-based reconstruction methods to be deployed in ring-array-based USCT. The focusing is achieved by applying a spatially varying temporal delay to the ultrasound pulse (emitter mode) and recorded signal (receiver mode). The proposed numerical transducer model is quantitatively validated and employed in computer simulation studies that demonstrate its use in image reconstruction for ring-array USCT.

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Section: Discussionmentioning

confidence: 99%

A Forward Model Incorporating Elevation-Focused Transducer Properties for 3-D Full-Waveform Inversion in Ultrasound Computed Tomography

Li,

Villa,

Duric

et al. 2023

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

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show abstract

“…The early detection of breast cancer primarily relies on X-ray mammography, magnetic resonance imaging (MRI), and ultrasound computed tomography [2,3]. The ultrasound technique has emerged as a pivotal modality for breast cancer diagnosis owing to its cost-effectiveness and non-ionizing radiation properties [4,5]. Although widely utilized for visualizing two-dimensional cross-sections of tissues and organs, traditional B-mode ultrasound imaging exhibits limitations in terms of accuracy and intuitiveness [6].…”

Section: Introductionmentioning

confidence: 99%

A High-Resolution 3D Ultrasound Imaging System Oriented towards a Specific Application in Breast Cancer Detection Based on a 1 × 256 Ring Array

Zhang,

Wu,

Meng

et al. 2024

Micromachines

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This paper presents the design and development of a high-resolution 3D ultrasound imaging system based on a 1 × 256 piezoelectric ring array, achieving an accuracy of 0.1 mm in both ascending and descending modes. The system achieves an imaging spatial resolution of approximately 0.78 mm. A 256 × 32 cylindrical sensor array and a digital phantom of breast tissue were constructed using the k-Wave toolbox. The signal is acquired layer by layer using 3D acoustic time-domain simulation, resulting in the collection of data from each of the 32 layers. The 1 × 256 ring array moves on a vertical trajectory from the chest wall to the nipple at a constant speed. A data set was collected at intervals of 1.5 mm, resulting in a total of 32 data sets. Surface rendering and volume rendering algorithms were used to reconstruct 3D ultrasound images from the volume data obtained via simulation so that the smallest simulated reconstructed lesion had a diameter of 0.3 mm. The reconstructed three-dimensional image derived from the experimental data exhibits the contour of the breast model along with its internal mass. Reconstructable dimensions can be achieved up to approximately 0.78 mm. The feasibility of applying the system to 3D breast ultrasound imaging has been demonstrated, demonstrating its attributes of resolution, precision, and exceptional efficiency.

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Cross-correlation adjustment full-waveform inversion with source encoding in ultrasound computed tomography

Zhang,

Zhao,

Yuan

et al. 2024

Ultrasonics

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Full-Waveform Inversion for Breast Ultrasound Tomography Using Line-Shape Modeled Elements

Cited by 4 publications

References 38 publications

A Forward Model Incorporating Elevation-Focused Transducer Properties for 3-D Full-Waveform Inversion in Ultrasound Computed Tomography

A Forward Model Incorporating Elevation-Focused Transducer Properties for 3-D Full-Waveform Inversion in Ultrasound Computed Tomography

A High-Resolution 3D Ultrasound Imaging System Oriented towards a Specific Application in Breast Cancer Detection Based on a 1 × 256 Ring Array

Cross-correlation adjustment full-waveform inversion with source encoding in ultrasound computed tomography

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