International Conferences on Biomedical and Bioinformatics Engineering最新文献

{"title":"Evaluation of TT-Based Local PWV Estimation for Different Propagation Velocities","authors":"Li Deng, Yufeng Zhang, Hong Mo","doi":"10.1145/3301879.3301894","DOIUrl":"https://doi.org/10.1145/3301879.3301894","url":null,"abstract":"Local pulse wave velocity (PWV) for a common carotid artery (CCA) is usually estimated using a transmit time (TT) method based on time fiduciary points at the feet of the pulse waves. However, the shape of pulse wave is affected because the propagation velocity (PV) and amplitude of the reflected wave changes with vascular wall elasticity. We assess the performance of the TT-based local PWV estimation for different PVs with four timing methods, i.e. the maximum value of the second derivative (M2D), the intersecting tangent (IT), the 20% threshold (TH20) and the maximum value of the first derivative (M1D) methods, for time fiduciary point detection. The wall distension waveforms propagating along a segment of CCA are modelled by a synthesization of the estimated incident and reflected waves for different PVs. The performance of the estimation based on the four methods is evaluated by measuring relative errors (REs). The results show that for the PVs below 6 m/s, the M2D, IT and TH20 methods exhibit good precision with REs less than 11%; for the PVs over 6 m/s, the M2D method is the most accurate than other three methods for the PWV estimation. The M2D method is the most suitable for the PWV estimation under a wide range of PV conditions. It may provide us with useful suggestions for improving the PWV estimation in clinical measurements.","PeriodicalId":327934,"journal":{"name":"International Conferences on Biomedical and Bioinformatics Engineering","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114236360","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}

{"title":"Computational Study on Motion Criterion and Muscle Activity Pattern in Elderly Gait with Muscle Weakness","authors":"Tatsuya Arakawa, T. Otani, Yo Kobayashi, Masao Tanaka","doi":"10.1145/3301879.3301891","DOIUrl":"https://doi.org/10.1145/3301879.3301891","url":null,"abstract":"The purpose of this study is to understand differences of walking strategies in elderly gait from the viewpoint of motion criterion and muscle activity pattern. In the context of forward dynamic gait simulation, we evaluated muscle activations and muscle tension forces using 2-D neuro-musculo-skeletal model with muscle weakness in elder subject. Examined criteria are the minimum specific power criterion and the minimum energy consumption rate. Under the former criterion, the muscular activation is elevated to increase the muscle tension and computationally generate an almost same joint motion as in walking of normal subject. Under the latter criterion, the muscle activity level is kept lower than that under the former criterion and the joint motion generated computationally corresponds to that observed in the clinical gait analysis of elderly. Therefore, the muscle activations and tensions of aged gait with muscle weakness largely depend on the motion criterion, and the results suggest that the muscle activation pattern different from young adult may cause the characteristic kinematics of the elderly gait.","PeriodicalId":327934,"journal":{"name":"International Conferences on Biomedical and Bioinformatics Engineering","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115026756","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}

{"title":"Tankendo Motion Estimation System with Robustness Against Differences in Color and Size Between Users' Clothes Using 4-Color Markers with Elastic Belts","authors":"Maki Nakamura, K. Hoshino","doi":"10.1145/3301879.3301890","DOIUrl":"https://doi.org/10.1145/3301879.3301890","url":null,"abstract":"To allow an individual to immediately try to train thrusting and striking motions of Tankendo on his / her own on the spot without changing clothes whenever necessary, we suggests a system, which is capable of capturing and analyzing the postures of thrusting and striking motions of Tankendo in a sagittal plane using up to 4-color markers and a single camera, even though there are differences in color and size between users' clothes and something is placed in the background. First, focusing on the colors of the background and users' clothes in a relatively wide area on a captured image, the system has integrated the procedure that different colors are allocated to the color markers of users, who may approach each other through a thrusting / striking motion, while the same color is allocated to the color markers of users, between whom the distance does not change. Moreover, some color marker may be difficult to visually observe when the user moves and overlaps with something with a relatively wide area in the background. To address this problem, a color different from that of the background is allocated to the color marker in question. This makes it easy to set the thresholds for extracting the markers in image processing even though the hue across the captured image reduces. Second, to prevent the color markers from getting out of original positions due to loosened clothes, the elastic belts with color markers fixed on are attached to e user's body. The result of our system evaluation demonstrated that up to 4-color markers might prevent similar color markers from approaching or occluding each other when the users move, regardless of the mode of thrusting / striking, simply by attaching the color markers to the users' bodies in the suggested procedure, even if the color of the clothes or something in the background would change. Moreover, when the color markers were attached to the user's bodies following the procedure doe attaching he markers specified in the system, the articular angle estimation could be achieved with relatively satisfactorily accuracy.","PeriodicalId":327934,"journal":{"name":"International Conferences on Biomedical and Bioinformatics Engineering","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126920694","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}

{"title":"An Improved Estimation for Blood Flow Velocity Profile from the Ultrasonic Pulse-Echo RF Signals","authors":"Lian Gao, Yufeng Zhang, Yanhong Li","doi":"10.1145/3301879.3301897","DOIUrl":"https://doi.org/10.1145/3301879.3301897","url":null,"abstract":"This paper presents a study on blood flow velocity profile estimation based on the pulse-echo RF signals generated with adaptively varying pulse-shooting intervals (VPI). With the purpose of evaluating the correctness and reliability about the estimation of blood flow velocity profile, the relevant simulation experiments are carried out in this paper based on a Field II ultrasound emulation model for common carotid artery without stenosis lesions. In simulation experiments, the RF signals are firstly generated with the fixed pulse-shooting interval (FPI) of 1/10000 s and VPIs predefined by parabolic velocity profile of blood flow (VPI_PV). Then the relevant PW Doppler signals are obtained for estimating the blood flow velocity profiles by employing the autocorrelation algorithm. It can be found from the results that the estimated blood flow velocity profiles from the PW Doppler signals of VPI_PV have enhancing validity compared with that received from the PW Doppler signals of FPI. The blood flow velocity profiles with enhanced validity would be used as basic contents for disease diagnosis.","PeriodicalId":327934,"journal":{"name":"International Conferences on Biomedical and Bioinformatics Engineering","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125207646","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}

{"title":"Automatic Segmentation of the Prostate on 3D CT Images by Using Multiple Deep Learning Networks","authors":"Jiayang Xiong, Luan Jiang, Qiang Li","doi":"10.1145/3301879.3301883","DOIUrl":"https://doi.org/10.1145/3301879.3301883","url":null,"abstract":"Automatic segmentation of the prostate on CT images has many applications in prostate cancer diagnosis and therapy. However, prostate segmentation from CT images is a very challenging task due to the low contrast of soft tissue and the large variations of the prostate shape. In this paper, we propose an automatic segmentation method by using a two dimension (2-D) and a three dimension (3-D) convolutional neural network (CNN). First, instead of segmenting the whole image, we extract the volumes of interest (VOI) accurately to remove irrelevant regions by using a CNN based VOI extraction method (CBVEM). Then, we use the 3-D CNN to learn the holistic three-dimension deep features for distinguishing the prostate voxels from the non-prostate voxels in order to obtain the segmentation results. Deep learning networks can automatically learn the deep features based on the data, which are different from the handcrafted features. The proposed method has been evaluated on a dataset of 150 prostate CT images. Experimental results show that our method achieved a Dice similarity coefficient of 89.74% compared to the manual segmentation. Our deep learning based method is faster and returns similar results compared to those atlas-based, deformable model-based and feature-based classification methods. Due to the CBVEM and 3-D CNN, our method also achieves better performances on the same data in a minimum processing time compared to other deep CNN based methods. This proposed method for automatic segmentation of the prostate on 3-D CT images can have a variety of clinical applications.","PeriodicalId":327934,"journal":{"name":"International Conferences on Biomedical and Bioinformatics Engineering","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134411434","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}

{"title":"Effect of Water Activity on Glass Transition Temperature and Physical Properties of Fried Durian Slice","authors":"S. Aichayawanich, T. Parametthanuwat","doi":"10.1145/3301879.3301900","DOIUrl":"https://doi.org/10.1145/3301879.3301900","url":null,"abstract":"This research aimed to study glass transition temperature (Tg) and the physical properties of fried durian slice at various water activity. To adjust the water activity in fried durian slice, the samples were placed in boxes containing a saturated salt solution while the water activity in the fried durian slice ranged from 0.207 to 0.796. Then, the glass transition temperature, color, and sensory evaluation score of the samples were evaluated. The correlation between phase and cripness of the samples were investigated. The experimental results showed that the glass transition temperature of fried durian slice decreased with a higher water activity. Glass transition temperature and the water activity were significantly related with the crispness and color value of the fried durian slice. The cripness of durian slice had high correlation with its cripness. The sensory evaluation score of fried durian slice depends on water activity. All sensory evaluation of fried durian slice at a water activity ≥ 0.542 were not acceptable.","PeriodicalId":327934,"journal":{"name":"International Conferences on Biomedical and Bioinformatics Engineering","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132903867","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}

{"title":"Electrochemical Characteristics of Graphene Oxide Coated on Anodized Titanium for Bone Protein Detection","authors":"Lalida Suppaso, E. Pengwang, S. Sirivisoot","doi":"10.1145/3301879.3301892","DOIUrl":"https://doi.org/10.1145/3301879.3301892","url":null,"abstract":"The performance of three-electrode sensor is depended on the fabrication technique of electrodes. In order to achieve the high electrical conductivity of working electrode, the methods of graphene oxide (GO) coating on anodized titanium (ATi) substrate (ATiGO) including electrodeposition, air-dried, and spin coating were studied. The cyclic voltammogram (CV) results indicated that the electrodeposition of ATiGO electrodes gave the clearly better oxidation than other coating methods and also commercial glassy carbon and platinum electrodes at a scan rate of 100 mV/s in K3Fe(CN)6 and Na2HPO4/NaH2PO4 electrolyte. The electrodeposition of ATiGO with various applied voltages (5, 10, 20 V) and durations (5, 10, 30 min) were investigated. The CV results showed that the ATiGO at 20 V and 10 min had higher peak current of oxidation than other coating conditions (not including 10 V at 30 min), but it gave the highest peak current of reduction. This study reported the preliminary data of fabrication of working electrode which would be further fabricated as a three-electrode sensor used as an implantable bone-protein detecting sensor. This sensor can be an alternative choice for early diagnosing of bone ingrowth next to an orthopedic implant.","PeriodicalId":327934,"journal":{"name":"International Conferences on Biomedical and Bioinformatics Engineering","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116144568","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}

{"title":"Research on the factors of colonoscopy screening compliance in high-risk colorectal cancer groups","authors":"Ma Hong-mei, Luo Jian-hong","doi":"10.1145/3022702.3022706","DOIUrl":"https://doi.org/10.1145/3022702.3022706","url":null,"abstract":"At present, the colonoscopy rate of colorectal cancer in urban residents is low. In order to acknowledge colonoscopy screening compliance of colorectal cancer high-risk of urban community residents and its influencing factors is for the purpose of targeted nursing intervention to improve compliance, to provide basis for colorectal cancer screening. The authors take colorectal cancer screening high-risk groups sample from community in Tianjin as the research object, according to whether be willing to accept endoscopic check, put them into the case group and the control group. Designed the general questionnaire colorectal cancer screening and colonoscopy cognitive questionnaire and refusing colonoscopy questionnaire for patients at high risk of colorectal cancer, using Delphi method to get final questionnaire, to get the influence factors of colorectal cancer high-risk patients receiving endoscopic check. Through the data analysis, we draw that only whether of health care between groups in all of the characteristics has statistically significant difference (P < 0.05), and others like gender, marriage, culture degree, family income, etc. has no statistical difference (P > 0. 05).Two groups has significant statistical difference in the colonoscopy cognitive (P < 0.05).At the same time, busy work and no time are the major causes of refusing to colonoscopy, with constituent ratio at 35%. After discussion, we consider that increasing cognitive of colorectal cancer screening colonoscopy and targeted to intervention of refusing colonoscopy related factors, could improve the colonoscopy screening compliance in patients with high risk of colorectal cancer, so as to improve the compliance of the screening work.","PeriodicalId":327934,"journal":{"name":"International Conferences on Biomedical and Bioinformatics Engineering","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134632543","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}

{"title":"Efficacy of N-acetyl-L-cysteine and Budesonide/Formoterol Combination for the Treatment of Patients with BCO from China","authors":"D. Zeng, Suqun Liao","doi":"10.1145/3375923.3375947","DOIUrl":"https://doi.org/10.1145/3375923.3375947","url":null,"abstract":"The clinical efficacy and safety of N-acetylcysteine combined with budesonide/formoterol (B/F) in patients with BCO from china were investigated in this study. Between July 2017 and July 2019, One hundred and eighteen Chinese \"bronchiectasis-COPD overlap\"(BCO) patients with stable chronic obstructive pulmonary disease(COPD) stage were selected, who were hospitalized for acute COPD attacks and fully completed treatment in acute phase. The patients were divided into two groups, one was intervention group, the other one was control group. Sixty patients in the intervention group underwent N-acetyl-L-cysteine and B/F combination, while 58 patients in the control group received budesonide/formoterol alone. Both of two groups were accepted 12-week treatment. The clinical efficacy were measured by comparing the change of evaluation index before and after 12 weeks treatment. The evaluation index was including dyspnea on exertion (DOE), lung function measured by the forced expiratory volume in 1 second (FEV1), quality of life. The adverse events were also detail recorded to evaluate the safety for treatment. After 12-week treatment, the intervention group showed greater efficacy in DOE (P<0.01) in 6-minute walk test (6MWT) scale, lung function (P<0.01), and quality of life (P<0.01) measured by the St. George's Respiratory Questionnaire (SGRQ) compared with the control group at the end of the 12-week treatment. In addition, adverse events in both groups were similar and tolerable. The results suggest that both N-acetylcysteine combination with B/F and B/F alone could be safely used in the treatment of Chinese BCO patients, while the N-acetyl-L-cysteine and B/F combination was more effective than B/F alnoe for Chinese patients in stable COPD stage with BCO.","PeriodicalId":327934,"journal":{"name":"International Conferences on Biomedical and Bioinformatics Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115989880","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}