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Technology and Health Care: Official Journal of the European Society for Engineering and Medicine

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https://www.readbyqxmd.com/read/28582931/a-surface-acoustic-wave-icp-sensor-with-good-temperature-stability
#1
Bing Zhang, Hong Hu, Aipeng Ye, Peng Zhang
BACKGROUND: Intracranial pressure (ICP) monitoring is very important for assessing and monitoring hydrocephalus, head trauma and hypertension patients, which could lead to elevated ICP or even devastating neurological damage. The mortality rate due to these diseases could be reduced through ICP monitoring, because precautions can be taken against the brain damage. OBJECTIVE: This paper presents a surface acoustic wave (SAW) pressure sensor to realize ICP monitoring, which is capable of wireless and passive transmission with antenna attached...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582930/optimal-three-dimensional-reconstruction-for-lung-cancer-tissues
#2
Xiaoguang Huang, Shihong Yue, Chuanlei Wang, Huaxiang Wang
The existing three-dimensional (3D) x-ray reconstruction methods for lung cancer tissue reconstruct the investigated objects based on a series of two-dimensional (2D) image sections and a chosen 3D reconstruction algorithm. However, because these procedures apply the same segmentation method for all 2D image sections, they may not achieve the optimal segmentation for each section. As a result, the reconstructed 3D images have limited spatial resolution. Furthermore, the existing 3D reconstruction method is time-consuming and results in a limited time resolution...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582929/relationships-between-lung-cancer-incidences-and-air-pollutants
#3
Shihong Yue, Yaru Wang, Jianpei Wang, Jun Chen
BACKGROUND: Statistics on lung cancer incidences and air pollutants show a strong correlation between air pollutant concentrations and pulmonary diseases. And environmental effects on lung cancer incidences remain highly unknown and uncertain in China. OBJECTIVE: This study aims to measure the relationships between different air pollutants and lung cancer incidences in Tianjin. METHODS: One thusand five hundred patients across 27 districts in Tianjin were studied for lung cancer incidences...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582928/epileptic-seizure-detection-based-on-the-kernel-extreme-learning-machine
#4
Qi Liu, Xiaoguang Zhao, Zengguang Hou, Hongguang Liu
This paper presents a pattern recognition model using multiple features and the kernel extreme learning machine (ELM), improving the accuracy of automatic epilepsy diagnosis. After simple preprocessing, temporal- and wavelet-based features are extracted from epileptic EEG signals. A combined kernel-function-based ELM approach is then proposed for feature classification. To further reduce the computation, Cholesky decomposition is introduced during the process of calculating the output weights. The experimental results show that the proposed method can achieve satisfactory accuracy with less computation time...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582925/medical-image-watermarking-using-bit-threshold-map-based-on-just-noticeable-distortion-in-discrete-cosine-transform
#5
Hyeon-Uk Seo, Qun Wei, Seong-Geun Kwon, Kyu-Ik Sohng
BACKGROUND: Medical images stored in a hospital system are generally confidential and integrated and require strict security. However, medical information stored on digital medical imaging systems, as well as picture archiving and communication systems (PACS), are vulnerable to attack when the data are transferred over wireless or wired communication networks. OBJECTIVE: To solve this problem, a watermarking algorithm for medical images is proposed using a bit threshold map based on just noticeable distortion (JND) in the discrete cosine transform (DCT) method...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582924/gpu-based-interactive-near-regular-texture-synthesis-for-digital-human-models
#6
Zhe Shen, Bin Ding, Zhipeng Yuan, Naisheng Zhang, Meng Zhao, Yuan Zhao
Near-regular texture is a common feature for both nature scene and 3D human models. However, traditional texture synthesis has only been able to produce a single result. This study proposes a parallel, and interactive, method for the texture synthesis of irregular appearance in 3D human models. The new method includes two major procedures: (1) iterative edge extraction and processing, and (2) parallel texture synthesis, which generates a texture with higher quality. In this paper, the effectiveness of near-regular texture synthesis algorithm is demonstrated experimentally...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582923/a-novel-lung-cancer-detection-algorithm-for-cads-based-on-ssp-and-level-set
#7
Hongbo Zhu, Chun-Hyok Pak, Chunhe Song, Shengchang Dou, Hai Zhao, Peng Cao, Xiangyun Ye
The fuzzy degree of lung nodule boundary is the most important cue to judge the lung cancer in CT images. Based on this feature, the paper proposes a novel lung cancer detection method for CT images based on the super-pixels and the level set segmentation methods. In the proposed methods, the super-pixels method is used to segment the lung region and the suspected lung cancer lesion region in the CT image. The super-pixels method and a level set method are used to segment the suspected lung cancer lesion region simultaneously...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582922/cellular-neural-network-modelling-of-soft-tissue-dynamics-for-surgical-simulation
#8
Jinao Zhang, Yongmin Zhong, Julian Smith, Chengfan Gu
BACKGROUND: Currently, the mechanical dynamics of soft tissue deformation is achieved by numerical time integrations such as the explicit or implicit integration; however, the explicit integration is stable only under a small time step, whereas the implicit integration is computationally expensive in spite of the accommodation of a large time step. OBJECTIVE: This paper presents a cellular neural network method for stable simulation of soft tissue deformation dynamics...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582921/grouped-fuzzy-svm-with-em-based-partition-of-sample-space-for-clustered-microcalcification-detection
#9
Huiya Wang, Jun Feng, Hongyu Wang
BACKGROUND: Detection of clustered microcalcification (MC) from mammograms plays essential roles in computer-aided diagnosis for early stage breast cancer. OBJECTIVE: To tackle problems associated with the diversity of data structures of MC lesions and the variability of normal breast tissues, multi-pattern sample space learning is required. METHODS: In this paper, a novel grouped fuzzy Support Vector Machine (SVM) algorithm with sample space partition based on Expectation-Maximization (EM) (called G-FSVM) is proposed for clustered MC detection...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582920/optimization-of-a-passively-suspended-injection-impeller-for-left-ventricular-assist-device
#10
Liangfan Zhu, Xi Yang, Yue Wu, Minghui Wang, Yun Luo
BACKGROUND: A rotary blood pump with a passively levitated impeller and a large bearing gap between housing and impeller in the range of 0.6 mm has been developed for Left ventricular assist device (LVAD). OBJECTIVE: The purpose of the present study is to determine the optimal injection angle of the impeller to improve its radial stability by increasing the radial suspension force. MTEHODS: Since the radial and axial suspension forces generated by an injection channel were equal, the axial suspension force obtained from numerical simulation was chosen as the evaluation parameter...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582919/design-of-an-ultrasonic-physiotherapy-system-with-pulse-wave-feedback-control
#11
Peng Pan, Yang Luo, Zhangyong Li, Wei Wang, Yu Pang
BACKGROUND: Due to different physical and biological mechanisms behind ultrasound hyperthermia and phonophoresis, the requirement for ultrasound power, frequency and control modes varies. OBJECTIVE: This paper introduces an adaptive ultrasonic physiotherapy system based on real-time surveillance over physiological characteristics of the patients, which in turn assists the individual treatment and dose limitation in auxiliary rehabilitation. METHODS: The method essentially takes advantage of distinctive characteristics of two different phases (systole and diastole) of the human cardiac cycle as a medium for modulation...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582918/differential-barometric-based-positioning-technique-for-indoor-elevation-measurement-in-iot-medical-applications
#12
Hua Wang, Yingyou Wen, Dazhe Zhao
BACKGROUND: Medical applications have begun to benefit from Internet of Things (IoT) technology through the introduction of wearable devices. Several medical applications require accurate patient location as various changes affect pressure parameters inside the body. OBJECTIVE: This study aims to develop a system to measure indoor altitude for IoT medical applications. METHODS: We propose a differential barometric-based positioning system to estimate the altitude between a reference sensor and a localizing sensor connected to the human body...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582917/potential-for-false-positive-results-from-multi-voxel-pattern-analysis-on-functional-imaging-data
#13
Zuo Zhang, Youhao Jiang, Yaoru Sun, Hong Zhang
BACKGROUND: Multi-voxel pattern analysis (MVPA) provides a powerful tool to investigate neural mechanisms for various cognitive processes under functional brain imaging. However, the high sensitivity of the MVPA method could bring about false positive results, which has been overlooked by previous research. OBJECTIVE: We investigated the potential for obtaining false positives from the MVPA method. METHODS: We conducted MVPA on a public functional MRI dataset on the neural encoding of various object categories...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582916/the-force-control-and-path-planning-of-electromagnetic-induction-based-massage-robot
#14
Wendong Wang, Lei Zhang, Qinqin Jiang, Lijing He, Yikai Shi
BACKGROUND: Massage robot is considered as an effective physiological treatment to relieve fatigue, improve blood circulation, relax muscle tone, etc. The simple massage equipment quickly spread into market due to low cost, but they are not widely accepted due to restricted massage function. Complicated structure and high cost caused difficulties for developing multi-function massage equipment. OBJECTIVE: This paper presents a novel massage robot which can achieve tapping, rolling, kneading and other massage operations, and proposes an improved reciprocating path planning algorithm to improve massage effect...
May 26, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582937/the-impact-of-breathing-pattern-and-rate-on-inspiratory-muscles-activity
#15
Anat Ratnovsky, Omri Gino, Sara Naftali
Different rehabilitation programs are used to relieve dyspnea for hyper-inflated lung patients. In this study, a new approach, based on integrated changes in respiratory rate and pattern, for inspiratory muscles rehabilitation and training was examined utilizing noninvasive measurements of the two inspiratory muscles (rib cage inspiratory and neck inspiratory muscles) activity during controlled breathing in healthy subjects. Muscles activity was measured using electromyography, while subjects, breathed at different combinations of respiratory rate (6, 10, 16 breath per minutes) and inspiratory duty cycles (TI/Ttot)...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582909/measuring-the-3d-motion-space-of-the-human-ankle
#16
Jinzhuang Xiao, Yunchao Zhang, Shuai Zhao, Hongrui Wang
BACKGROUND: The 3D motion space of the human ankle is an important area of study in medicine. The 3D motion space can provide significant information for establishing more reasonable rehabilitation procedures and standards of ankle injury care. OBJECTIVE: This study aims to measure the 3D motion space of the human ankle and to use mathematical methods to quantify it. METHODS: A motion capturing system was used to simultaneously capture the 3D coordinates of points marked on the foot, and convert these coordinate values into rotation angles through trigonometric functions and vectors...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582908/the-collagen-microstructural-changes-of-rat-menisci-and-tibiofemoral-cartilages-under-the-influence-of-mechanical-loading-an-in-vitro-wear-test-of-whole-joints
#17
Haoliuyang Cai, Zhixiu Hao, Liying Xiao, Chao Wan, Lingying Tong
BACKGROUND: Knee osteoarthritis (OA) is suggested to be induced by multi-factors, and mechanical environment is regarded as a risky factor. OBJECTIVE: To investigate the effect of isolated mechanical factor on cartilage. METHODS: An active wear test system was designed to perform parameters-controlled in vitro wear tests on rat knee joints with specific load magnitude, flexion-extension angle, and movement frequency. Six hind limbs of 9-month-old male Sprague-Dawley rats, with an additional spring on the medial side, were worn by using the custom-designed apparatus...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582907/mining-association-rules-between-stroke-risk-factors-based-on-the-apriori-algorithm
#18
Qin Li, Yiyan Zhang, Hongyu Kang, Yi Xin, Caicheng Shi
BACKGROUND: Stroke is a frequently-occurring disease and is a severe threat to human health. OBJECTIVE: We aimed to explore the associations between stroke risk factors. METHODS: Subjects who were aged 40 or above were requested to do surveys with a unified questionnaire as well as laboratory examinations. The Apriori algorithm was applied to find out the meaningful association rules. Selected association rules were divided into 8 groups by the number of former items...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582906/paroxysmal-atrial-fibrillation-recognition-based-on-multi-scale-r%C3%A3-nyi-entropy-of-ecg
#19
Yi Xin, Yizhang Zhao, Yuanhui Mu, Qin Li, Caicheng Shi
BACKGROUND: Atrial fibrillation (AF) is a common type of arrhythmia disease, which has a high morbidity and can lead to some serious complications. The ability to detect and in turn prevent AF is extremely significant to the patient and clinician. OBJECTIVE: Using ECG to detect AF and develop a robust and effective algorithm is the primary objective of this study. METHODS: Some studies show that after AF occurs, the regulatory mechanism of vagus nerve and sympathetic nerve will change...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582905/a-comparative-study-on-the-mechanical-behavior-of-intervertebral-disc-using-hyperelastic-finite-element-model
#20
Feng Xie, Honghai Zhou, Wenju Zhao, Lixin Huang
BACKGROUND: Lumbar disc herniation may result in excruciating pain due to it being one of the most common diseases related to changes of intervertebral disc (IVD). In order to find a better clinical treatment and prevention scheme for relieving the pain caused by spine degeneration, the mechanical behavior analysis of IVD must be studied. OBJECTIVE: A finite element method (FEM) is used in this study to analyze the mechanical behaviors of healthy and herniated IVD...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
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