Biomedical engineering advances最新文献_第9页

Modularization Study of Intelligent Construction of Medical and Nursing Home Based on Assembly Building 基于装配式建筑的医疗养老院智能化建设模块化研究

Biomedical engineering advances Pub Date : 2023-07-26 DOI: 10.26855/ea.2023.06.008

Lingbo Jiang, Lu Zhang, D. Bu, Xiaobo Wang

引用次数: 0

Pipe Cooling Optimization of the Mass Marine Concrete Temperature Fields for the Main Tower Cap of the Zhoudai Sea-crossing Cable-stayed Bridge 周代跨海斜拉桥主塔帽大体积海工混凝土温度场管道冷却优化

Biomedical engineering advances Pub Date : 2023-07-26 DOI: 10.26855/ea.2023.06.011

Kexin Chen, Maolin He, Lei Jin, Tao Li

引用次数: 0

Research on Traffic Congestion Management Strategies of Primary and Secondary Schools in Cities of China 中国城市中小学校交通拥堵管理策略研究

Biomedical engineering advances Pub Date : 2023-07-26 DOI: 10.26855/ea.2023.06.010

Y. Zhao

引用次数: 0

Application of Aerometeorological Technology in Air Traffic Control—Taking Huatugou Airport as an Example 航空气象技术在空中交通管制中的应用——以花土沟机场为例

Biomedical engineering advances Pub Date : 2023-07-26 DOI: 10.26855/ea.2023.06.006

Yanjie Wang, Yongqing Zhang, Houyuan Du

引用次数: 0

Simple hearing test utilizing a soundproofing headphone with acoustic filters 简单的听力测试使用隔音耳机与声学过滤器

Biomedical engineering advances Pub Date : 2023-07-16 DOI: 10.1016/j.bea.2023.100102

Fumiya Mizukoshi , Naoki Oishi , Hidetoshi Takahashi

{"title":"Simple hearing test utilizing a soundproofing headphone with acoustic filters","authors":"Fumiya Mizukoshi , Naoki Oishi , Hidetoshi Takahashi","doi":"10.1016/j.bea.2023.100102","DOIUrl":"10.1016/j.bea.2023.100102","url":null,"abstract":"<div><p>Hearing loss is a significant quality-of-life (QOL) issue in aging populations and is linked to social isolation, dementia, and depression. Early detection and treatment of hearing loss are critically important aspects of preventing cognitive decline and dementia. To date, smartphone, or tablet-based hearing test methods have been proposed to increase the rate of hearing loss detection outside of the hospital. However, simple hearing tests may be performed without adequate soundproofing facilities; therefore, the reliability of such tests in noisy environments is questionable. In this study, we propose a simple hearing test method that uses a soundproof active noise control (ANC) headphone with acoustic-filtering earcups. The ANC headphones provide sufficient soundproofing over a wide frequency range, and the acoustic-filtering earcups provide effective soundproofing around the test frequency. The proposed earcup is equipped with a Helmholtz resonator (HR) array, wherein multiple HRs are densely arrayed in a honeycomb structure. The muffling effect of the HRs effectively attenuated the noise at a specific frequency. This property is useful for high-accuracy hearing tests, in which the noise around the test frequency is sufficiently reduced. The prototype device attained a maximum noise attenuation of 50 dB at approximately 4 kHz and provided hearing tests that were as accurate as those obtained in a soundproof room.</p></div>","PeriodicalId":72384,"journal":{"name":"Biomedical engineering advances","volume":"6 ","pages":"Article 100102"},"PeriodicalIF":0.0,"publicationDate":"2023-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41490965","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

Recent advancements in telemedicine: Surgical, diagnostic and consultation devices 远程医疗的最新进展:外科、诊断和咨询设备

Biomedical engineering advances Pub Date : 2023-07-04 DOI: 10.1016/j.bea.2023.100096

Sakura Sikander, Pradipta Biswas , Pankaj Kulkarni

引用次数: 1

Evaluation of primary hemodynamic parameters using in-house developed flexible microstructured pressure sensor 利用自主研发的柔性微结构压力传感器评估主要血流动力学参数

Biomedical engineering advances Pub Date : 2023-06-29 DOI: 10.1016/j.bea.2023.100100

Shubham Kumar , Bijender , Amit Soni , Sanjay Yadav , Ashok Kumar

{"title":"Evaluation of primary hemodynamic parameters using in-house developed flexible microstructured pressure sensor","authors":"Shubham Kumar , Bijender , Amit Soni , Sanjay Yadav , Ashok Kumar","doi":"10.1016/j.bea.2023.100100","DOIUrl":"https://doi.org/10.1016/j.bea.2023.100100","url":null,"abstract":"<div><p>Noninvasive measurement of arterial pulse provides information about the heart condition through the evaluation of primary hemodynamic parameters such as blood pressure (BP), pulse rate (PR), and pulse regularity. Moreover, BP is one of the most important biomarkers of cardiovascular disease, mainly hypertension. To prevent this, accurate measurement of BP becomes necessary. Currently, flexible pressure sensors have drawn a lot of interest due to their prospective applications in wearable devices for healthcare monitoring. We have collected the human oscillometric pulse by a polymer-based flexible capacitive pressure sensor and calculated the BP as well as PR using the maximum amplitude algorithm. The results are compared with a pre-calibrated oscillometric BP monitor available in the market. Based on the error criteria, the device followed the universal standard. In addition, the flexibility and high accuracy of the device result in the assessment of the possible medical applications, including abnormal pulse rates such as tachycardia or bradycardia and irregular heart rhythm such as cardiac arrhythmia.</p></div>","PeriodicalId":72384,"journal":{"name":"Biomedical engineering advances","volume":"6 ","pages":"Article 100100"},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49732894","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

A Hybrid Approach for retinal image super-resolution 一种用于视网膜图像超分辨率的混合方法

Biomedical engineering advances Pub Date : 2023-06-25 DOI: 10.1016/j.bea.2023.100099

Alnur Alimanov , Md Baharul Islam , Nirase Fathima Abubacker

{"title":"A Hybrid Approach for retinal image super-resolution","authors":"Alnur Alimanov , Md Baharul Islam , Nirase Fathima Abubacker","doi":"10.1016/j.bea.2023.100099","DOIUrl":"https://doi.org/10.1016/j.bea.2023.100099","url":null,"abstract":"<div><p>Experts require large high-resolution retinal images to detect tiny abnormalities, such as microaneurysms or issues of vascular branches. However, these images often suffer from low quality (e.g., resolution) due to poor imaging device configuration and misoperations. Many works utilized Convolutional Neural Network-based (CNN) methods for image super-resolution. The authors focused on making these models more complex by adding layers and various blocks. It leads to additional computational expenses and obstructs the application in real-life scenarios. Thus, this paper proposes a novel, lightweight, deep-learning super-resolution method for retinal images. It comprises a Vision Transformer (ViT) encoder and a convolutional neural network decoder. To our best knowledge, this is the first attempt to use a transformer-based network to solve the issue of accurate retinal image super-resolution. A progressively growing super-resolution training technique is applied to increase the resolution of images by factors of 2, 4, and 8. The prominent architecture remains constant thanks to the adaptive patch embedding layer, which does not lead to additional computational expense due to increased up-scaling factors. This patch embedding layer includes 2-dimensional convolution with specific values of kernel size and strides that depend on the input shape. This strategy has removed the need to append additional super-resolution blocks to the model. The proposed method has been evaluated through quantitative and qualitative measures. The qualitative analysis also includes vessel segmentation of super-resolved and ground truth images. Experimental results indicate that the proposed method outperforms the current state-of-the-art methods.</p></div>","PeriodicalId":72384,"journal":{"name":"Biomedical engineering advances","volume":"6 ","pages":"Article 100099"},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49710535","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

Grooved poly(lactide-co-trimethylene carbonate) substrates in tenogenic media maintain human tendon derived cell phenotype in culture – A preliminary report✰ 肌腱形成培养基中的凹槽聚（丙交酯-碳酸三甲酯）基质在培养中保持人肌腱衍生细胞表型——初步报告✰

Biomedical engineering advances Pub Date : 2023-06-22 DOI: 10.1016/j.bea.2023.100098

Sofia Ribeiro , Eugenia Pugliese , Stefanie H. Korntner , Emanuel M. Fernandes , Manuela E. Gomes , Rui L. Reis , Alan O'Riordan , Stephen Kearns , Jack L. Kelly , Manus Biggs , Yves Bayon , Dimitrios I. Zeugolis

{"title":"Grooved poly(lactide-co-trimethylene carbonate) substrates in tenogenic media maintain human tendon derived cell phenotype in culture – A preliminary report✰","authors":"Sofia Ribeiro , Eugenia Pugliese , Stefanie H. Korntner , Emanuel M. Fernandes , Manuela E. Gomes , Rui L. Reis , Alan O'Riordan , Stephen Kearns , Jack L. Kelly , Manus Biggs , Yves Bayon , Dimitrios I. Zeugolis","doi":"10.1016/j.bea.2023.100098","DOIUrl":"https://doi.org/10.1016/j.bea.2023.100098","url":null,"abstract":"<div><p>Tissue engineering strategies for tendon repair and regeneration rely heavily on the use of tendon derived cells. However, these cells frequently undergo phenotypic drift <em>in vitro</em>, which compromises their therapeutic potential. In order to maintain the phenotype of tendon derived cells <em>in vitro</em>, microenvironmental cues (biophysical, biochemical and/or biological in origin) have been used to better imitate the complex tendon microenvironment. Herein, the influence of planar and grooved (groove width of ∼1.0 µm, groove depth of ∼1.4 µm and distance between groves of ∼1.7 µm) poly(glycolide-co-ε-caprolactone) substrates with elastic modulus of 7 kPa and poly(lactide-co-trimethylene carbonate) substrates with elastic modulus of 12 kPa on human tendon derived cell response was assessed, using planar tissue culture plastic substrates of 3 GPa elastic modulus as control, in both basal and tenogenic media. At day 17, the grooved 12 kPa poly(lactide-co-trimethylene carbonate) substrate induced the highest deposition and alignment of collagen type I in tenogenic media. At day 17, the grooved 12 kPa poly(lactide-co-trimethylene carbonate) substrate and the tissue culture plastic induced the highest deposition and the tissue culture plastic and the planar 7 kPa poly(glycolide-co-ε-caprolactone) induced the lowest alignment of tenascin C in tenogenic media. Also at day 17 in tenogenic media, the grooved 12 kPa poly(lactide-co-trimethylene carbonate) substrate induced the upregulation of most tenogenic genes (COL1A1, COL3A1, MKX, TNMD). Our data further support the notion of multifactorial tissue engineering for effective control over cell fate <em>in vitro</em> setting.</p></div>","PeriodicalId":72384,"journal":{"name":"Biomedical engineering advances","volume":"6 ","pages":"Article 100098"},"PeriodicalIF":0.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49710507","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

Comprehensive mechanical performance characteristics of newly developed ultra-thin coronary stents 新型超薄冠状动脉支架的综合力学性能特点

Biomedical engineering advances Pub Date : 2023-06-22 DOI: 10.1016/j.bea.2023.100097

Mohamed S. Ibrahim , Moataz Elsisy , Kara Nghiem , Amr F. Mohamed , Chang Hun Kum , Jae Hwa Cho , Gyuhyun Jin , Sang Hyun An , Youngjae Chun

{"title":"Comprehensive mechanical performance characteristics of newly developed ultra-thin coronary stents","authors":"Mohamed S. Ibrahim , Moataz Elsisy , Kara Nghiem , Amr F. Mohamed , Chang Hun Kum , Jae Hwa Cho , Gyuhyun Jin , Sang Hyun An , Youngjae Chun","doi":"10.1016/j.bea.2023.100097","DOIUrl":"https://doi.org/10.1016/j.bea.2023.100097","url":null,"abstract":"<div><p>Endovascular technologies such as percutaneous transluminal coronary angioplasty and stenting are widely used due to being minimally invasive procedures. One of the endovascular devices, a drug-eluting stent (DES), proved to be a safe and effective therapeutic option for cardiologists, substantially reducing in-stent restenosis (ISR) rates. DES consists of thin (< 200 µm) or ultra-thin (< 70 µm) struts made of Cobalt-Chromium (CoCr) or other alloys. The DES with ultra-thin struts exhibits higher longitudinal flexibility and improved trackability. It also reduces vascular injury and promotes more rapid endothelization, substantially decreasing the risk of ISR. This study evaluates comprehensive mechanical performances of two different structural designs of newly developed ultra-thin CoCr stents (i.e., strut width of 75 µm or 65 µm). These two stent designs are engineered with distinct bridge size and distribution patterns, prioritizing enhanced flexibility irrespective of the strut thickness. Computational modeling results show anticipated stress distribution with maximum local stresses, which are compared with experimental outcomes conducted in this study. ASTM <span>guideline</span><svg><path></path></svg> based in vitro experimental studies have been conducted to assess the stents’ longitudinal flexibility, radial strength, recoil and shortening, as well as crushability through this study. Three-point bending experiments have demonstrated that the stent design 1 requires less bending force compared to the design 2, showing better longitudinal flexibility of the stent design 1 in the collapsed state for the new ultra-thin DES devices. The design 1 also showed superior radial strength and recoiling phenomena, as well as smaller shortening. In short, the stent design 1 shows better mechanical performance needed for the coronary artery DES.</p></div>","PeriodicalId":72384,"journal":{"name":"Biomedical engineering advances","volume":"6 ","pages":"Article 100097"},"PeriodicalIF":0.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49732768","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