2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)最新文献_第2页

Low Complexity Adaptive Beamforming using Data Covariance Matrix for Ultrasound Plane Wave Imaging 基于数据协方差矩阵的超声平面波成像低复杂度自适应波束形成

2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS) Pub Date : 2021-10-04 DOI: 10.1109/LAUS53676.2021.9639106

A. Zimbico, F. Schneider, J. Maia, L. Neves, Felipe Meira Ribas, A. Assef, E. Costa

{"title":"Low Complexity Adaptive Beamforming using Data Covariance Matrix for Ultrasound Plane Wave Imaging","authors":"A. Zimbico, F. Schneider, J. Maia, L. Neves, Felipe Meira Ribas, A. Assef, E. Costa","doi":"10.1109/LAUS53676.2021.9639106","DOIUrl":"https://doi.org/10.1109/LAUS53676.2021.9639106","url":null,"abstract":"A low complexity adaptive beamformer is suggested for medical ultrasound plane wave Imaging. It represents a framework whose principle is based on the eigendecomposition (ED) of the data covariance matrix (CM) to generate the adaptive weight vectors. The proposed method is a solution of the optimization problem in which the output echo signal interference to noise ratio (eSINR) is maximized and the main objective was to reduce de computational complexity (CC) compared to minimum variance (MV) and eigenspace MV (EMV) by eliminating the CM inversion operation. The principal eigenvector associated with the maximum eigenvalue was rotated and projected onto the signal subspace to generate the adaptive weight vector. The proposed method is referred to as principal eigenvector (p-EV) beamformer and, in this work, it has been tested on phantom data from the platform Plane-wave Imaging Challenge in Medical Ultrasound (PICMUS). A set of 21 steered plane waves was selected from a total of 75 plane waves provided by PICMUS for data processing. The spatial resolution evaluation of the proposed beamformer was performed using the Full Width at Half Maximum (FWHM) and contrast ratio (CR). We compare the proposed method using delay-and-sum (DAS), the MV, and EMV beamformers. Additionally, for all adaptive processing, we used a subarray of L=M/ 3 (M=128 elements). We found that, the proposed p-EV appears to be more effective in cyst border definition while improving the visibility of weak targets. Since in diverging wave compounding (DWC) imaging, the best image quality is by increasing the number of firing elements (FE), it is of fundamental importance to obtain a higher quality image with a lower number of FE. The CC performed by the proposed p-EV beamformer shows less time-consuming compared to MV and EMV and, under the quantitative analysis, provides improved CR and FWHM being suitable for ultrasound plane wave imaging.","PeriodicalId":156639,"journal":{"name":"2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117271358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Segmentation of Breast Ultrasound Images using Densely Connected Deep Convolutional Neural Network and Attention Gates 基于密集连接深度卷积神经网络和注意门的乳腺超声图像分割

2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS) Pub Date : 2021-10-04 DOI: 10.1109/LAUS53676.2021.9639178

Niranjan Thirusangu, M. Almekkawy

{"title":"Segmentation of Breast Ultrasound Images using Densely Connected Deep Convolutional Neural Network and Attention Gates","authors":"Niranjan Thirusangu, M. Almekkawy","doi":"10.1109/LAUS53676.2021.9639178","DOIUrl":"https://doi.org/10.1109/LAUS53676.2021.9639178","url":null,"abstract":"Ultrasound imagining modality is a popular complementary technique for diagnosing breast cancer. A standardized reporting process called Breast imaging reporting and data system (BI-RADS) is used to categorize breast cancer. The BI-RADS scale uses several features of lesions based on the ultrasound images, which makes the quality of the diagnosis highly dependent on the experience of the radiologist. Radiologists use Computer-Aided Diagnosis (CAD) system to help in the detection of lesions. The accuracy of a CAD system depends greatly on the segmentation stage of the system. To increase the reliability of the diagnosis, we propose a solution based on a densely connected deep convolutional neural network and attention gates, called Attention U-DenseNet. Attention U-DenseNet is an architecture to do semantic segmentation of the lesions from Breast Ultrasound (BUS) images based on the U-Net, DenseNet, and attention gates. Convolutional layers of the U-Net are made densely connected using dense blocks to help to learn complex patterns of the BUS image which is usually noisy and contaminated with speckles. This architecture (U-DenseNet) produced an F-score of 0.63 compared to the U-Net model with an F-score of 0.49. Furthermore, to localize the segmentation by learning salient features, attention gates are added to the U-DenseNet architecture (Attention U-DenseNet). Attention U-DenseNet performed even better compared to U-DenseNet, by improving the F-score to 0.75. Finally, a per-image regularised binary cross-entropy is employed to penalize false negatives more than false positives, since the region of interest is small.","PeriodicalId":156639,"journal":{"name":"2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127462946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Noninvasive ultrasound for Lithium-ion batteries state estimation 无创超声用于锂离子电池状态评估

2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS) Pub Date : 2021-10-04 DOI: 10.1109/LAUS53676.2021.9639104

Simon Montoya-Bedoya, M. Bernal, Laura A. Sabogal-Moncada, H. V. Martínez-Tejada, E. Garcia-Tamayo

{"title":"Noninvasive ultrasound for Lithium-ion batteries state estimation","authors":"Simon Montoya-Bedoya, M. Bernal, Laura A. Sabogal-Moncada, H. V. Martínez-Tejada, E. Garcia-Tamayo","doi":"10.1109/LAUS53676.2021.9639104","DOIUrl":"https://doi.org/10.1109/LAUS53676.2021.9639104","url":null,"abstract":"Lithium-ion battery degradation estimation using fast and noninvasive techniques is a crucial issue in the circular economy framework of this technology. Currently, most of the approaches used to establish the battery-state (i.e., State of Charge (SoC), State of Health (SoH)) require time-consuming processes. In the present preliminary study, an ultrasound array was used to assess the influence of the SoC and SoH on the variations in the time of flight (TOF) and the speed of sound (SOS) of the ultrasound wave inside the batteries. Nine aged 18650 Lithium-ion batteries were imaged at 100% and 0% SoC using a Vantage-256 system (Verasonics, Inc.) equipped with a 64-element ultrasound array and a center frequency of 5 MHz (Imasonic SAS). It was found that second-life batteries have a complex ultrasound response due to the presence of many degradation pathways and, thus, making it harder to analyze the ultrasound measurements. Although further analysis must be done to elucidate a clear correlation between changes in the ultrasound wave properties and the battery state estimation, this approach seems very promising for future nondestructive evaluation of second-life batteries","PeriodicalId":156639,"journal":{"name":"2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122589600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comparison of three simulation methods for RF ultrasound signal envelope detection 射频超声信号包络检测三种仿真方法的比较

2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS) Pub Date : 2021-10-04 DOI: 10.1109/LAUS53676.2021.9639124

Matheus Jose da Silva Ruzyk, Amanda Costa Martinez, A. Assef, Lucas Ribeiro De Oliveira, J. Maia, E. Costa

{"title":"Comparison of three simulation methods for RF ultrasound signal envelope detection","authors":"Matheus Jose da Silva Ruzyk, Amanda Costa Martinez, A. Assef, Lucas Ribeiro De Oliveira, J. Maia, E. Costa","doi":"10.1109/LAUS53676.2021.9639124","DOIUrl":"https://doi.org/10.1109/LAUS53676.2021.9639124","url":null,"abstract":"Envelope detection is an important step for B-mode ultrasound (US) image reconstruction, demodulating the received radiofrequency echo signals prior to further processing steps to obtain US images. There are several mathematical methods to perform envelope detection and one of them is through Hilbert transform (HT). In this work, we present the results of computational simulations in MATLAB using Field II software associated with the use of standard Simulink blocks and custom blocks of the Xilinx Model Composer library for field-programmable gate arrays (FPGA) using HT. Qualitative and quantitative means were used to compare US images obtained with the three cited methods. For the quantitative analysis of the proposed models, the following metrics were used: normalized root mean square error (NRMSE), normalized residual sum of squares (NRSS), contrast-to-noise ratio (CNR), and contrast resolution (CR). In conclusion, the proposed methods can satisfactorily simulate echo envelope signals for ultrasound imaging, resulting in very similar images, and are useful tools for high-level project development.","PeriodicalId":156639,"journal":{"name":"2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124670750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Classification of thyroid nodules in H-scan ultrasound images using texture and prinicipal component analysis 基于纹理和主成分分析的超声图像甲状腺结节分类

2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS) Pub Date : 2021-10-04 DOI: 10.1109/LAUS53676.2021.9639213

Mawia Khairalseed, Rosa Laimes, Joseph A. Pinto, Jorge Guerrero, Himelda Chávez, C. Salazar, Gary R. Ge, K. Parker, R. Lavarello, K. Hoyt

{"title":"Classification of thyroid nodules in H-scan ultrasound images using texture and prinicipal component analysis","authors":"Mawia Khairalseed, Rosa Laimes, Joseph A. Pinto, Jorge Guerrero, Himelda Chávez, C. Salazar, Gary R. Ge, K. Parker, R. Lavarello, K. Hoyt","doi":"10.1109/LAUS53676.2021.9639213","DOIUrl":"https://doi.org/10.1109/LAUS53676.2021.9639213","url":null,"abstract":"H-scan ultrasound (US) imaging is a new tissue classification approach that depicts the relative size of scattering objects. The purpose of this study was to assess the ability of in vivo H-scan US imaging to discriminate benign from malignant thyroid nodules in human subjects. Image data was acquired using a SonixTouch US scanner (Analogic Ultrasound) equipped with an L14-5 transducer. To generate the H-scan US image, three parallel convolution filters were applied to the radiofrequency (RF) data sequences to measure the relative strength of the backscattered US signals. H-scan US was used to image thyroid lesions in human subjects. To examine the H-scan outputs for both benign and malignant lesions, seven texture features were derived from the spatial gray-level dependency (SGLD) matrix. These features were extracted from a region-of-interest (ROI) that was segmented from each H-scan US image. In addition, the principal component analysis (PCA) parameters were used to cluster the color texture feature image from benign and malignant lesions to further highlight differences. The results from texture analysis and PCA demonstrated significant differences between benign and malignant thyroid lesions (p<0.05). Overall, this study reveals the effectiveness of H-scan US imaging for classification of benign and malignant thyroid lesions.","PeriodicalId":156639,"journal":{"name":"2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115016877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Design and Construction of a Piezoelectric Transducer for Acoustic Levitation 声悬浮压电换能器的设计与制造

2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS) Pub Date : 2021-10-04 DOI: 10.1109/LAUS53676.2021.9639212

Sílvio L. Vieira, M. Andrade

{"title":"Design and Construction of a Piezoelectric Transducer for Acoustic Levitation","authors":"Sílvio L. Vieira, M. Andrade","doi":"10.1109/LAUS53676.2021.9639212","DOIUrl":"https://doi.org/10.1109/LAUS53676.2021.9639212","url":null,"abstract":"Sound can levitate objects of different sizes in air and water. This feature allows cells, liquids, or compounds to be handled without being touched or contaminated. Acoustic levitation is usually achieved through one or more piezoelectric transducers. Among different types of piezoelectric transducers, the Langevin-type transducer, formed by pairs of piezoelectric ceramics rings sandwiched between two loading masses and coupled by a central bolt, is one of the most used transducers in acoustic levitation. The piezoelectric materials, when excited with a specific electrical potential, respond by deforming mechanically. Thus, the transducer acts as an actuator, generating displacement amplitudes that depend on the frequency. At the resonance frequency, the displacement of the transducer face is maximum. In this work, we design and fabricate a piezoelectric transducer to assembly a single-axis acoustic levitator capable of levitating objects larger than the acoustic wavelength. This approach is fundamental for developing a new generation of levitation devices called “acoustic robots.” A numerical model based on the Finite Element Method was employed for simulating and designing the transducer. Then the transducer parts were machined in a mechanical workshop, and the transducer was assembled and characterized. The designed Langevin transducer consists of two piezoelectric ceramics pressed between two metallic aluminum cylindrical masses and a mechanical amplifier composing the transducer body. The characterization of the Langevin transducer was done by measuring its electrical impedance curve. As a result, resonant frequency response was found around 21.560 kHz with a minimum impedance of 95 Ω and the anti-resonance frequency at 21.685 kHz with a maximum impedance of 81.502 kΩ. The transducer successfully levitated a polyacetal disk of 3.1 mm radius, 2 mm thickness, and a mass of 85 mg.","PeriodicalId":156639,"journal":{"name":"2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128896236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Contrast-enhanced ultrasound imaging of tumor xenografts with comparison to intratumoral pressure after vascular-disrupting treatment 异种肿瘤的超声造影与血管破坏治疗后瘤内压力的比较

2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS) Pub Date : 2021-10-04 DOI: 10.1109/LAUS53676.2021.9639193

Dominique James, Jane Song, Junjie Li, F. Forsberg, K. Nam, K. Hoyt

{"title":"Contrast-enhanced ultrasound imaging of tumor xenografts with comparison to intratumoral pressure after vascular-disrupting treatment","authors":"Dominique James, Jane Song, Junjie Li, F. Forsberg, K. Nam, K. Hoyt","doi":"10.1109/LAUS53676.2021.9639193","DOIUrl":"https://doi.org/10.1109/LAUS53676.2021.9639193","url":null,"abstract":"Contrast-enhanced ultrasound (CEUS) is a noninvasive imaging modality that allows the study of tissue blood flow at the microvascular level. The objective of this study was to investigate the tumor perfusion using CEUS imaging and relationship to direct measurements of intratumoral pressure after administration of a vascular-disrupting treatment. Four female mice were implanted with breast cancer cells in the mammary fat pad and tumors were allowed to grow for about four weeks. Before and after microbubble (MB) dosing via a tail vein catheter, nonlinear CEUS imaging was performed along the largest tumor cross-section. Following baseline CEUS imaging, 20 mg/kg of combretastatin A-4 phosphate (CA4P) was administered using the placed catheter. After treatment, CEUS imaging was performed again at 4 or 24 h. Direct local pressure measurements were taken within the ultrasound (US) imaging plane with a calibrated pressure catheter. After euthanasia, tumors were removed for ex vivo analysis. CEUS images were analyzed offline using the Vevo Lab Software. Small region-of-interests (ROIs) were selected to match the locations where the pressure catheter tip was positioned for comparison. Considerable changes in CEUS images were found after tumor treatment. Intratumoral pressure measurements were significantly lower at 24 h compared to those obtained at 4 h (p = 0.01).","PeriodicalId":156639,"journal":{"name":"2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132448665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of macromolecule functionalization on the mechanical properties of PVA hydrogels 高分子功能化对聚乙烯醇水凝胶力学性能的影响

2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS) Pub Date : 2021-10-04 DOI: 10.1109/LAUS53676.2021.9639180

Liliana Maria Arroyave Muñoz, S. E. Mira, L. Múnera, Claudia Patricia Ossa Orozco, M. B. Restrepo

{"title":"Effects of macromolecule functionalization on the mechanical properties of PVA hydrogels","authors":"Liliana Maria Arroyave Muñoz, S. E. Mira, L. Múnera, Claudia Patricia Ossa Orozco, M. B. Restrepo","doi":"10.1109/LAUS53676.2021.9639180","DOIUrl":"https://doi.org/10.1109/LAUS53676.2021.9639180","url":null,"abstract":"Synthetic vascular grafts can be used to repair damaged vessels for cardiovascular diseases. Polyvinyl alcohol (PVA) hydrogels are promising materials for the manufacturing of cellularized synthetic vascular grafts. Previous studies have demonstrated that functionalization of PVA with macromolecules such as gelatin, collagen among others, increases cell adhesion to the hydrogels. In this study we evaluated the effect on mechanical properties of these macromolecules on PVA blocks and thin tubes. A 9% PVA solution mixed with 1% of macromolecules (gelatin, collagen and fibroin) was used to manufacture blocks and tubes of PVA. The mechanical properties were assessed using a shear wave elastography approach and the group velocity to compare between the different conditions. The results of this study demonstrated that macromolecules can be used to modulate the mechanical properties since they tend to increase the materials Young’s modulus. On the contrary, the use of stabilizers and crosslinking agents such as glutaraldehyde (Glut), HC1 and acetic acid (AA) showed a decrease in the Young’s modulus and group velocity in the blocks and tubes.","PeriodicalId":156639,"journal":{"name":"2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128956796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A MATLAB GUI Interface for Multi-Level Pulse Amplitude Modulation (PAM) Generation in Medical Ultrasound Research 医学超声研究中多级脉冲幅度调制(PAM)生成的MATLAB GUI界面

2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS) Pub Date : 2021-10-04 DOI: 10.1109/LAUS53676.2021.9639111

Renan Antonio Corrêa Medeiros, A. Assef, J. Maia, Matheus Jose da Silva Ruzyk, Michel Andrey Freitas de Souza Kohler, E. Costa

引用次数: 0

Performance Assessment of Side Lobe Suppression Filters Based on Ground Truth Ultrasound Image 基于地真超声图像的旁瓣抑制滤波器性能评价

2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS) Pub Date : 2021-10-04 DOI: 10.1109/LAUS53676.2021.9639112

M. Jeong, S. Kwon, M. Choi

{"title":"Performance Assessment of Side Lobe Suppression Filters Based on Ground Truth Ultrasound Image","authors":"M. Jeong, S. Kwon, M. Choi","doi":"10.1109/LAUS53676.2021.9639112","DOIUrl":"https://doi.org/10.1109/LAUS53676.2021.9639112","url":null,"abstract":"When echoes are focused to obtain an ultrasound image, the point spread function of a sound field calculated by using the ray tracing method consists of a main lobe echo from the imaging point and a side lobe echo from outside the imaging point. If the position of all the scatterers in an imaging area is known, the propagation path of ultrasound can be calculated, and the main and side lobe echoes can be separated in the beamforming computation. We converted the gray level of an MR image of a human organ into an ultrasonic reflectivity distribution from the knowledge of the reflectivity and position of all the scatterers inside an organ of the human body and used to form an ultrasound image. Using computer simulation, we constructed the main lobe, side lobe, and conventional images by separating in image forming process echo signals due to the main and side lobes. The main lobe image can be considered as an ideal ground truth image that can be used to assess the performance of signal processing methods applied to a conventional image. We estimated side lobes from a conventional ultrasound image and designed side lobe suppression filters based on them. We applied the minimum variance beamforming and three types of side lobe suppression filters to a conventional ultrasound image, and compared the resulting image with the main lobe image. Although the proposed method cannot be applied to in vivo ultrasound data acquired from the human body, it can be applied to synthesized data converted from images of other imaging modalities, thereby making more realistic comparison possible than with phantom data. Our method may be used as a quantitative method for evaluating the performance of focusing in a medical ultrasound imaging system.","PeriodicalId":156639,"journal":{"name":"2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130940299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0