journal
MENU ▼
Read by QxMD icon Read
search

Biomedical Engineering Online

journal
https://www.readbyqxmd.com/read/29751811/peripheral-vascular-disease-assessment-in-the-lower-limb-a-review-of-current-and-emerging-non-invasive-diagnostic-methods
#1
REVIEW
Elham Shabani Varaki, Gaetano D Gargiulo, Stefania Penkala, Paul P Breen
BACKGROUND: Worldwide, at least 200 million people are affected by peripheral vascular diseases (PVDs), including peripheral arterial disease (PAD), chronic venous insufficiency (CVI) and deep vein thrombosis (DVT). The high prevalence and serious consequences of PVDs have led to the development of several diagnostic tools and clinical guidelines to assist timely diagnosis and patient management. Given the increasing number of diagnostic methods available, a comprehensive review of available technologies is timely in order to understand their limitations and direct future development effort...
May 11, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29747693/blood-hyperviscosity-identification-with-reflective-spectroscopy-of-tongue-tip-based-on-principal-component-analysis-combining-artificial-neural-network
#2
Ming Liu, Jing Zhao, XiaoZuo Lu, Gang Li, Taixia Wu, LiFu Zhang
BACKGROUND: With spectral methods, noninvasive determination of blood hyperviscosity in vivo is very potential and meaningful in clinical diagnosis. In this study, 67 male subjects (41 health, and 26 hyperviscosity according to blood sample analysis results) participate. METHODS: Reflectance spectra of subjects' tongue tips is measured, and a classification method bases on principal component analysis combined with artificial neural network model is built to identify hyperviscosity...
May 10, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29743080/hemodynamic-effects-of-perfusion-level-of-peripheral-ecmo-on-cardiovascular-system
#3
Kaiyun Gu, Zhe Zhang, Bin Gao, Yu Chang, Feng Wan
BACKGROUND: Peripheral ECMO is an effective cardiopulmonary support in clinical. The perfusion level could directly influence the performances and complications. However, there are few studies on the effects of the perfusion level on hemodynamics of peripheral ECMO. METHODS: The geometric model of cardiovascular system with peripheral ECMO was established. The blood assist index was used to classify the perfusion level of the ECMO. The flow pattern from the aorta to the femoral artery and their branches, blood flow rate from aorta to brain and limbs, flow interface, harmonic index of blood flow, wall shear stress and oscillatory shear index were chosen to evaluate the hemodynamic effects of peripheral ECMO...
May 9, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29739456/estimation-of-spatio-temporal-parameters-of-gait-from-magneto-inertial-measurement-units-multicenter-validation-among-parkinson-mildly-cognitively-impaired-and-healthy-older-adults
#4
Matilde Bertoli, Andrea Cereatti, Diana Trojaniello, Laura Avanzino, Elisa Pelosin, Silvia Del Din, Lynn Rochester, Pieter Ginis, Esther M J Bekkers, Anat Mirelman, Jeffrey M Hausdorff, Ugo Della Croce
BACKGROUND: The use of miniaturized magneto-inertial measurement units (MIMUs) allows for an objective evaluation of gait and a quantitative assessment of clinical outcomes. Spatial and temporal parameters are generally recognized as key metrics for characterizing gait. Although several methods for their estimate have been proposed, a thorough error analysis across different pathologies, multiple clinical centers and on large sample size is still missing. The aim of this study was to apply a previously presented method for the estimate of spatio-temporal parameters, named Trusted Events and Acceleration Direct and Reverse Integration along the direction of Progression (TEADRIP), on a large cohort (236 patients) including Parkinson, mildly cognitively impaired and healthy older adults collected in four clinical centers...
May 9, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29739399/the-roles-of-mid-myocardial-and-epicardial-cells-in-t-wave-alternans-development-a-simulation-study
#5
D Janusek, J Svehlikova, J Zelinka, W Weigl, R Zaczek, G Opolski, M Tysler, R Maniewski
BACKGROUND: The occurrence of T-wave alternans in electrocardiographic signals was recently linked to susceptibility to ventricular arrhythmias and sudden cardiac death. Thus, by detecting and comprehending the origins of T-wave alternans, it might be possible to prevent such events. RESULTS: Here, we simulated T-wave alternans in a computer-generated human heart model by modulating the action potential duration and amplitude during the first part of the repolarization phase...
May 8, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29724232/anti-deception-reliable-eeg-based-biometrics-with-real-time-capability-from-the-neural-response-of-face-rapid-serial-visual-presentation
#6
Qunjian Wu, Bin Yan, Ying Zeng, Chi Zhang, Li Tong
BACKGROUND: The electroencephalogram (EEG) signal represents a subject's specific brain activity patterns and is considered as an ideal biometric given its superior invisibility, non-clonality, and non-coercion. In order to enhance its applicability in identity authentication, a novel EEG-based identity authentication method is proposed based on self- or non-self-face rapid serial visual presentation. RESULTS: In contrast to previous studies that extracted EEG features from rest state or motor imagery, the designed paradigm could obtain a distinct and stable biometric trait with a lower time cost...
May 3, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29724227/mobile-gpu-based-implementation-of-automatic-analysis-method-for-long-term-ecg
#7
Xiaomao Fan, Qihang Yao, Ye Li, Runge Chen, Yunpeng Cai
BACKGROUND: Long-term electrocardiogram (ECG) is one of the important diagnostic assistant approaches in capturing intermittent cardiac arrhythmias. Combination of miniaturized wearable holters and healthcare platforms enable people to have their cardiac condition monitored at home. The high computational burden created by concurrent processing of numerous holter data poses a serious challenge to the healthcare platform. An alternative solution is to shift the analysis tasks from healthcare platforms to the mobile computing devices...
May 3, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29720178/a-new-approach-for-analysis-of-heart-rate-variability-and-qt-variability-in-long-term-ecg-recording
#8
Hau-Tieng Wu, Elsayed Z Soliman
BACKGROUND AND PURPOSE: With the emergence of long-term electrocardiogram (ECG) recordings that extend several days beyond the typical 24-48 h, the development of new tools to measure heart rate variability (HRV) and QT variability is needed to utilize the full potential of such extra-long-term ECG recordings. METHODS: In this report, we propose a new nonlinear time-frequency analysis approach, the concentration of frequency and time (ConceFT), to study the HRV QT variability from extra-long-term ECG recordings...
May 3, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29720187/simulation-as-a-preoperative-planning-approach-in-advanced-heart-failure-patients-a-retrospective-clinical-analysis
#9
Massimo Capoccia, Silvia Marconi, Sanjeet Avtaar Singh, Domenico M Pisanelli, Claudio De Lazzari
BACKGROUND: Modelling and simulation may become clinically applicable tools for detailed evaluation of the cardiovascular system and clinical decision-making to guide therapeutic intervention. Models based on pressure-volume relationship and zero-dimensional representation of the cardiovascular system may be a suitable choice given their simplicity and versatility. This approach has great potential for application in heart failure where the impact of left ventricular assist devices has played a significant role as a bridge to transplant and more recently as a long-term solution for non eligible candidates...
May 2, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29720173/clinical-validation-and-assessment-of-aortic-hemodynamics-using-computational-fluid-dynamics-simulations-from-computed-tomography-angiography
#10
Yulei Zhu, Rui Chen, Yu-Hsiang Juan, He Li, Jingjing Wang, Zhuliang Yu, Hui Liu
BACKGROUND: Hemodynamic information including peak systolic pressure (PSP) and peak systolic velocity (PSV) carry an important role in evaluation and diagnosis of congenital heart disease (CHD). Since MDCTA cannot evaluate hemodynamic information directly, the aim of this study is to provide a noninvasive method based on a computational fluid dynamics (CFD) model, derived from multi-detector computed tomography angiography (MDCTA) raw data, to analyze the aortic hemodynamics in infants with CHD, and validate these results against echocardiography and cardiac catheter measurements...
May 2, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29716599/proprioceptive-impairments-in-high-fall-risk-older-adults-the-effect-of-mechanical-calf-vibration-on-postural-balance
#11
Nima Toosizadeh, Hossein Ehsani, Marco Miramonte, Jane Mohler
BACKGROUND: Impairments in proprioceptive mechanism with aging has been observed and associated with fall risk. The purpose of the current study was to assess proprioceptive deficits among high fall risk individuals in comparison with healthy participants, when postural performance was disturbed using low-frequency mechanical gastrocnemius vibratory stimulation. METHODS: Three groups of participants were recruited: healthy young (n = 10; age = 23 ± 2 years), healthy elders (n = 10; age = 73 ± 3 years), and high fall risk elders (n = 10; age = 84 ± 9 years)...
May 2, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29716598/localized-instance-fusion-of-mri-data-of-alzheimer-s-disease-for-classification-based-on-instance-transfer-ensemble-learning
#12
Xiaoheng Tan, Yuchuan Liu, Yongming Li, Pin Wang, Xiaoping Zeng, Fang Yan, Xinke Li
BACKGROUND: Diagnosis of Alzheimer's disease (AD) is very important, and MRI is an effective imaging mode of Alzheimer's disease. There are many existing studies on the diagnosis of Alzheimer's disease based on MRI data. However, there are no studies on the transfer learning between different datasets (including different subjects), thereby improving the sample size of target dataset indirectly. METHODS: Therefore, a new framework method is proposed in this paper to solve this problem...
May 2, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29716591/the-primary-stability-of-different-implants-for-intra-articular-calcaneal-fractures-an-in-vitro-study
#13
Ming Ni, Jiong Mei, Kun Li, Wenxin Niu, Ming Zhang
BACKGROUND: Calcaneal fractures account for around 2% of all fractures and most of them are intra-articular fractures. Many implants have been used in the fixation of calcaneal fractures, but their biomechanical stability has not yet been well investigated. The aim of this study was to compare the primary stability of four fixations of calcaneal fracture. METHODS: Eight cadaveric calcaneus samples were used to simulate the Sanders' types III fracture pattern and fixed through four different implants, namely, K-wires, cannulated screws (CS), absorbable screws (AS), and plate-screw system (PSS)...
May 2, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29703261/biomechanical-analysis-of-plate-systems-for-proximal-humerus-fractures-a-systematic-literature-review
#14
REVIEW
Ali Jabran, Chris Peach, Lei Ren
BACKGROUND: Proximal humerus fractures are the third most common in the human body but their management remains controversial. Open reduction and internal fixation with plates is one of the leading modes of operative treatment for these fractures. The development of technologies and techniques for these plates, during the recent decades, promise a bright future for their clinical use. A comprehensive review of in vitro biomechanical studies is needed for the comparison of plates' mechanical performance and the testing methodologies...
April 27, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29703194/relationship-between-movement-time-and-hip-moment-impulse-in-the-sagittal-plane-during-sit-to-stand-movement-a-combined-experimental-and-computer-simulation-study
#15
Takuma Inai, Tomoya Takabayashi, Mutsuaki Edama, Masayoshi Kubo
BACKGROUND: The association between repetitive hip moment impulse and the progression of hip osteoarthritis is a recently recognized area of study. A sit-to-stand movement is essential for daily life and requires hip extension moment. Although a change in the sit-to-stand movement time may influence the hip moment impulse in the sagittal plane, this effect has not been examined. The purpose of this study was to clarify the relationship between sit-to-stand movement time and hip moment impulse in the sagittal plane...
April 27, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29690896/marine-derived-protein-kinase-inhibitors-for-neuroinflammatory-diseases
#16
REVIEW
Chong Ning, Hui-Min David Wang, Rong Gao, Yu-Chia Chang, Fengqing Hu, Xianjun Meng, Shi-Ying Huang
Neuroinflammation is primarily characterized by overexpression of proinflammatory mediators produced by glial activation or immune cell infiltration. Several kinases have been shown to be critical mediators in neuroinflammation. One of the largest groups of kinases is protein kinases, which have been the second most studied group of drug targets after G-protein-coupled receptors. Thus far, most of the approved kinase inhibitor drugs are adenosine triphosphate-competitive inhibitors with various off-target liabilities because of cross-reactivities; however, marine-derived compounds provide opportunities for discovering allosteric kinase inhibitors...
April 24, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29690883/gamma-rays-excited-radioluminescence-tomographic-imaging
#17
Xuanxuan Zhang, Shouping Zhu, Yang Li, Yonghua Zhan, Xueli Chen, Fei Kang, Jing Wang, Xu Cao
BACKGROUND: Radionuclide-excited luminescence imaging is an optical radionuclide imaging strategy to reveal the distributions of radioluminescent nanophosphors (RLNPs) inside small animals, which uses radioluminescence emitted from RLNPs when excited by high energy rays such as gamma rays generated during the decay of radiotracers used in clinical nuclear medicine imaging. Currently, there is no report of tomographic imaging based on radioluminescence. METHODS: In this paper, we proposed a gamma rays excited radioluminescence tomography (GRLT) to reveal three-dimensional distributions of RLNPs inside a small animal using radioluminescence through image reconstruction from surface measurements of radioluminescent photons using an inverse algorithm...
April 24, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29685173/dynamic-characteristics-of-oxygen-consumption
#18
Lin Ye, Ahmadreza Argha, Hairong Yu, Branko G Celler, Hung T Nguyen, Steven Su
BACKGROUND: Previous studies have indicated that oxygen uptake ([Formula: see text]) is one of the most accurate indices for assessing the cardiorespiratory response to exercise. In most existing studies, the response of [Formula: see text] is often roughly modelled as a first-order system due to the inadequate stimulation and low signal to noise ratio. To overcome this difficulty, this paper proposes a novel nonparametric kernel-based method for the dynamic modelling of [Formula: see text] response to provide a more robust estimation...
April 23, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29678186/should-fluid-dynamics-be-included-in-computer-models-of-rf-cardiac-ablation-by-irrigated-tip-electrodes
#19
Ana González-Suárez, Juan J Pérez, Enrique Berjano
BACKGROUND: Although accurate modeling of the thermal performance of irrigated-tip electrodes in radiofrequency cardiac ablation requires the solution of a triple coupled problem involving simultaneous electrical conduction, heat transfer, and fluid dynamics, in certain cases it is difficult to combine the software with the expertise necessary to solve these coupled problems, so that reduced models have to be considered. We here focus on a reduced model which avoids the fluid dynamics problem by setting a constant temperature at the electrode tip...
April 20, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29665801/an-extended-opensim-knee-model-for-analysis-of-strains-of-connective-tissues
#20
M Marieswaran, Arnab Sikidar, Anu Goel, Deepak Joshi, Dinesh Kalyanasundaram
BACKGROUND: OpenSim musculoskeletal models provide an accurate simulation environment that eases limitations of in vivo and in vitro studies. In this work, a biomechanical knee model was formulated with femoral articular cartilages and menisci along with 25 connective tissue bundles representing ligaments and capsules. The strain patterns of the connective tissues in the presence of femoral articular cartilage and menisci in the OpenSim knee model was probed in a first of its kind study...
April 17, 2018: Biomedical Engineering Online
journal
journal
40193
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"