Australasian Physical & Engineering Sciences in Medicine最新文献

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Ultrasound shear wave simulation of wave propagation at oblique angles. 超声剪切波在斜角下的传播模拟。
Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-09-01 Epub Date: 2019-03-15 DOI: 10.1007/s13246-019-00748-3
Dae Woo Park, Hyun-Chong Cho
{"title":"Ultrasound shear wave simulation of wave propagation at oblique angles.","authors":"Dae Woo Park,&nbsp;Hyun-Chong Cho","doi":"10.1007/s13246-019-00748-3","DOIUrl":"https://doi.org/10.1007/s13246-019-00748-3","url":null,"abstract":"<p><p>Shear wave elasticity imaging (SWEI) has been used to measure the local tissue elasticity. The local tissue shear modulus can be reconstructed from the displacement field of shear waves using an algebraic Helmholtz inversion (AHI) equation or a time-of-flight (TOF)-based algorithm. The shear waves, which are generated by successive focusing of ultrasonic beams at different depths, propagate at oblique angles rather than along the lateral position. The wave propagation at oblique angles can result in bias in shear modulus reconstruction using the AHI equation or the TOF-based algorithm. In this study, the effect of wave propagation at oblique angles on the tissue shear modulus reconstruction was investigated using in silico finite element (FE) simulation. An FE elastic tissue with a hard inclusion model was designed. The shear waves with propagation angles of 0°, 5°, and 10° were applied to the model. The shear modulus and the percentage error in the model were computed using the AHI equation and the TOF-based algorithm at each propagation angle from 0° to 10°. For the AHI equation, the percentage error was 0% at propagation angles of 0° and 5°, and 1% at a propagation angle of 10° in the inclusion. In the surrounding tissue, the percentage error was 0% at propagation angles of 0°, 5°, and 10°. For the TOF-based algorithm, the percentage error was 0% at propagation angles of 0° and 5°, and 40% at a propagation angle of 10° in the inclusion. In the surrounding tissue, the percentage error was 0% at propagation angles of 0° and 5°, and 35% at a propagation angle of 10° in the inclusion. Therefore, whereas the TOF-based algorithm produced critical bias in shear modulus reconstruction by the shear wave propagation at oblique angles, the AHI equation was not affected by the propagation.</p>","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 3","pages":"665-670"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00748-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37061383","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: 3
Multi optimized SVM classifiers for motor imagery left and right hand movement identification 运动图像左、右手运动识别的多优化SVM分类器
Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-08-30 DOI: 10.1007/s13246-019-00793-y
K. Mebarkia, A. Reffad
{"title":"Multi optimized SVM classifiers for motor imagery left and right hand movement identification","authors":"K. Mebarkia, A. Reffad","doi":"10.1007/s13246-019-00793-y","DOIUrl":"https://doi.org/10.1007/s13246-019-00793-y","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"949 - 958"},"PeriodicalIF":0.0,"publicationDate":"2019-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00793-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46275161","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: 21
Analysis of brain functional connectivity network in MS patients constructed by modular structure of sparse weights from cognitive task-related fMRI 基于认知任务相关fMRI稀疏权重模块化结构构建的MS脑功能连接网络分析
Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-08-26 DOI: 10.1007/s13246-019-00790-1
Seyedeh Naghmeh Miri Ashtiani, H. Behnam, M. Daliri, G. Hossein-Zadeh, M. Mehrpour
{"title":"Analysis of brain functional connectivity network in MS patients constructed by modular structure of sparse weights from cognitive task-related fMRI","authors":"Seyedeh Naghmeh Miri Ashtiani, H. Behnam, M. Daliri, G. Hossein-Zadeh, M. Mehrpour","doi":"10.1007/s13246-019-00790-1","DOIUrl":"https://doi.org/10.1007/s13246-019-00790-1","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"921 - 938"},"PeriodicalIF":0.0,"publicationDate":"2019-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00790-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43034439","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
A simple and efficient method to measure beam attenuation through a radiotherapy treatment couch and immobilization devices 一种简单有效的方法来测量光束衰减通过放疗治疗床和固定装置
Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-08-26 DOI: 10.1007/s13246-019-00789-8
O. Bawazeer, S. Herath, S. Sarasanandarajah, T. Kron, L. Dunn, P. Deb
{"title":"A simple and efficient method to measure beam attenuation through a radiotherapy treatment couch and immobilization devices","authors":"O. Bawazeer, S. Herath, S. Sarasanandarajah, T. Kron, L. Dunn, P. Deb","doi":"10.1007/s13246-019-00789-8","DOIUrl":"https://doi.org/10.1007/s13246-019-00789-8","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"1183 - 1189"},"PeriodicalIF":0.0,"publicationDate":"2019-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00789-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46487049","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
Independent assessment of source transit time for the BEBIG SagiNova® cobalt-60 high dose rate brachytherapy afterloader BEBIG SagiNova®钴-60高剂量率近距离放射治疗后装药源传输时间的独立评估
Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-08-26 DOI: 10.1007/s13246-019-00788-9
A. Kanani, S. Karbasi, M. Mosleh-Shirazi
{"title":"Independent assessment of source transit time for the BEBIG SagiNova® cobalt-60 high dose rate brachytherapy afterloader","authors":"A. Kanani, S. Karbasi, M. Mosleh-Shirazi","doi":"10.1007/s13246-019-00788-9","DOIUrl":"https://doi.org/10.1007/s13246-019-00788-9","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"913 - 919"},"PeriodicalIF":0.0,"publicationDate":"2019-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00788-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44883761","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: 2
Verification of lithium formate monohydrate in 3D-printed container for electron paramagnetic resonance dosimetry in radiotherapy 用于放射治疗中电子顺磁共振剂量测定的3D打印容器中甲酸锂一水合物的验证
Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-08-13 DOI: 10.1007/s13246-019-00786-x
Jin-sol Shin, Hoon Choi, Hun-Joo Shin, Shin-Wook Kim, H. Park, Jina Kim, A. Kim, Jinho Hwang, Y. Seol, T. Oh, H. Jang, B. Choi, Y. Kang
{"title":"Verification of lithium formate monohydrate in 3D-printed container for electron paramagnetic resonance dosimetry in radiotherapy","authors":"Jin-sol Shin, Hoon Choi, Hun-Joo Shin, Shin-Wook Kim, H. Park, Jina Kim, A. Kim, Jinho Hwang, Y. Seol, T. Oh, H. Jang, B. Choi, Y. Kang","doi":"10.1007/s13246-019-00786-x","DOIUrl":"https://doi.org/10.1007/s13246-019-00786-x","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"811 - 818"},"PeriodicalIF":0.0,"publicationDate":"2019-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00786-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44760892","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: 2
An affordable custom phantom for measurement of linac time delay in gated treatments with irregular breathing 一种价格合理的定制体模,用于测量呼吸不规则门控治疗中的直线加速器时间延迟
Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-08-08 DOI: 10.1007/s13246-019-00785-y
A. Santos, J. Shepherd
{"title":"An affordable custom phantom for measurement of linac time delay in gated treatments with irregular breathing","authors":"A. Santos, J. Shepherd","doi":"10.1007/s13246-019-00785-y","DOIUrl":"https://doi.org/10.1007/s13246-019-00785-y","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"863 - 869"},"PeriodicalIF":0.0,"publicationDate":"2019-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00785-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45101127","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: 2
Optimizing image quality using automatic exposure control based on the signal-difference-to-noise ratio: a phantom study 利用基于信噪比的自动曝光控制优化图像质量:一项幻影研究
Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-08-08 DOI: 10.1007/s13246-019-00784-z
H. Kawashima, K. Ichikawa, Shinsuke Hanaoka, K. Matsubara
{"title":"Optimizing image quality using automatic exposure control based on the signal-difference-to-noise ratio: a phantom study","authors":"H. Kawashima, K. Ichikawa, Shinsuke Hanaoka, K. Matsubara","doi":"10.1007/s13246-019-00784-z","DOIUrl":"https://doi.org/10.1007/s13246-019-00784-z","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"803 - 810"},"PeriodicalIF":0.0,"publicationDate":"2019-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00784-z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48947140","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: 7
Development of a biological signal-based evaluator for robot-assisted upper-limb rehabilitation: a pilot study 基于生物信号的机器人上肢康复评估器的初步研究
Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-08-01 DOI: 10.1007/s13246-019-00783-0
Bo Sheng, Lihua Tang, O. Moosman, Chao Deng, S. Xie, Yanxin Zhang
{"title":"Development of a biological signal-based evaluator for robot-assisted upper-limb rehabilitation: a pilot study","authors":"Bo Sheng, Lihua Tang, O. Moosman, Chao Deng, S. Xie, Yanxin Zhang","doi":"10.1007/s13246-019-00783-0","DOIUrl":"https://doi.org/10.1007/s13246-019-00783-0","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"789 - 801"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00783-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41778179","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: 6
EEG power spectrum analysis for schizophrenia during mental activity 精神分裂症精神活动期脑电图功率谱分析
Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-07-30 DOI: 10.1007/s13246-019-00779-w
B. Thilakavathi, S. Shenbaga Devi, M. Malaiappan, K. Bhanu
{"title":"EEG power spectrum analysis for schizophrenia during mental activity","authors":"B. Thilakavathi, S. Shenbaga Devi, M. Malaiappan, K. Bhanu","doi":"10.1007/s13246-019-00779-w","DOIUrl":"https://doi.org/10.1007/s13246-019-00779-w","url":null,"abstract":"","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 1","pages":"887 - 897"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00779-w","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42580600","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: 14
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