{"title":"Quantification of Retinal Vascular Tortuosity: Evaluation on Different Numbers of Sampling Points","authors":"T. D. Nafia, A. Handayani","doi":"10.1109/IBIOMED.2018.8534883","DOIUrl":"https://doi.org/10.1109/IBIOMED.2018.8534883","url":null,"abstract":"Local tortuosity in a certain segment of the retinal blood vessels can be used to evaluate progression of some chronic diseases, such as diabetic and hypertensive retinopathy. To ensure objective and accurate observation on the progression of local vessel tortuosity, a quantitative tortuosity measurement index based on digital image processing is required. The generic first step in local tortuosity quantification is to isolate the local retinal blood vessel segment and represent it as series of sampling point coordinates through curve resampling and smoothing procedures. This paper presents the effects of different number of sampling points on the performance of the twelve different retinal local vascular tortuosity indexes. We seek to find the tortuosity index formulation which consistently shows strong correlation with the ophthalmologist assessment and the optimum number of sampling points required to achieve such performance. Our research confirmed that the Tortuosity Density (TD) index provides the highest spearman’s rank correlation coefficients with ophthalmolgist assessment, i.e. 0.94 for retinal arteries and 0.85 for retinal veins. This performance was achieved by three-times upsampling from the original vessel sampling points.","PeriodicalId":217196,"journal":{"name":"2018 2nd International Conference on Biomedical Engineering (IBIOMED)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128209136","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":"Propensity Score Matching Using Support Vector Machine in Case of Type 2 Diabetes Mellitus (DM)","authors":"Silviatul Hasanah, B. Otok, Purhadi","doi":"10.1109/IBIOMED.2018.8534909","DOIUrl":"https://doi.org/10.1109/IBIOMED.2018.8534909","url":null,"abstract":"Randomization in the treatment and control group was not appropriate for non-experimental studies because it will produced bias estimation of treatment effects. In addition to randomization, the presence of confounding variables will also produce bias estimation of treatment effect. This bias estimation of treatment effect can be handled using Propensity Score (PS) method. One of the methods that have been developed from the propensity score is Propensity Score Matching (PSM). In this study, the propensity score is estimated using Support Vector Machine (SVM). Confounding variables that used in this study is exercise activities. The purpose of this study is to apply the PSM using SVM method and calculate the accuracy and Percent Bias Reduction (PBR) on type 2 Diabetes mellitus (DM) disease complications case. The data used in this study is type 2 Diabetes Mellitus (DM) patients data treated at Pasuruan regional public hospital on March 2017. The results of PSM-SVM analysis shows that there are 40 of 96 patients with type 2 DM who have enough exercise activities paired with patients who have less exercise activities. Average Treatment of Treated (ATT) estimation result shows that exercise activity variables (Z) has significant effect on disease complication variables (Y). The accuracy of the PSM-SVM method is 70.00% and 16.65% of the bias can be reduced.","PeriodicalId":217196,"journal":{"name":"2018 2nd International Conference on Biomedical Engineering (IBIOMED)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122700263","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}
Alfi Zuhriya Khoirunnisaa, Evi Septiana Pane, A. Wibawa, M. Purnomo
{"title":"Channel Selection of EEG-Based Cybersickness Recognition during Playing Video Game Using Correlation Feature Selection (CFS)","authors":"Alfi Zuhriya Khoirunnisaa, Evi Septiana Pane, A. Wibawa, M. Purnomo","doi":"10.1109/IBIOMED.2018.8534877","DOIUrl":"https://doi.org/10.1109/IBIOMED.2018.8534877","url":null,"abstract":"Recently, the rapid development of 3D movie or video games, causing the phenomenon of cybersickness. Cybersickness is an unpleasant symptom (dizziness, nausea, vomiting, and disorientation) that occur to humans when exposure in 3D movie or video games within a certain time. It can disrupt psychic and physical condition of the human if not handled appropriately. Many studies have been done to investigate cybersickness using physiological measurements, one of which is EEG. However, earlier studies have not discussed an optimal channel location for identifying cybersickness on EEG. In this paper, we proposed Correlation Feature Selection (CFS) method to select features in order to determine best channel selection. The power percentage (PP) features of alpha ($alpha$), beta ($beta$) and theta ($theta$) bands were extracted on all channels. CFS method obtained 3 optimal channels location on F3, O1, and O2 from PP feature of beta ($beta$) band. The investigating of cybersickness employs three compare classifiers i.e. SVM-RBF, k-NN, and LDA. According to our result, LDA is the best classifier for identifying cybersickness. By using CFS method, it can improve performance accuracy from 83% to 100%. Hence, we conclude that beta frequency band on frontal and occipital area is suitable to measure EEG-based cybersickness.","PeriodicalId":217196,"journal":{"name":"2018 2nd International Conference on Biomedical Engineering (IBIOMED)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128684469","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}
Mashal Fatima, H. Zafar, M. Talha Sana, M. Shafique
{"title":"Investigating the Effect of Different Wavelength of Light on Heart Rate Variability and Perfusion Index","authors":"Mashal Fatima, H. Zafar, M. Talha Sana, M. Shafique","doi":"10.1109/IBIOMED.2018.8534794","DOIUrl":"https://doi.org/10.1109/IBIOMED.2018.8534794","url":null,"abstract":"Light influences on our physical, mental and emotional health. It can suppress or stimulate physiological responses in human beings, the extent of which depends on the wavelength, duration and intensity of light exposure. The study was designed to investigate the impact of different colored illumination, using non-invasive means on the heart rate variability and perfusion index. Electrocardiogram (ECG) and pulse oximetry are non-invasive recording of the cardiac activity. Thus, this paper reports experimental research conducted where changes in heart rate (HR), Heart rate variability (HRV)through ECG and perfusion index (PI) via pulse oximetry were measured when the participants were exposed to different wavelength of light (Blue, Red, and Green). The results of these experiments show that there is a change in heart rate, variability and perfusion index when a subject is exposed to different wavelengths. There was a decrease in HR and PI after the exposure, significantly for blue $( mathrm{p} < 0.0001, mathrm{p} < 0.0002)$ and green $( mathrm{p} < 0.0098, mathrm{p} < 0.0150)$ (shorter wavelength) color, while significant increase in HRV (blue $( mathrm{p} < 0.0001)$, green $( mathrm{p} < 0.0451)$). The case was opposite for red color.","PeriodicalId":217196,"journal":{"name":"2018 2nd International Conference on Biomedical Engineering (IBIOMED)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116119812","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":"Development of Multiple Layers of PLCL Scaffold for Vascular Tissue Engineering","authors":"Azizah Intan Pangesty, M. Todo","doi":"10.1109/IBIOMED.2018.8534874","DOIUrl":"https://doi.org/10.1109/IBIOMED.2018.8534874","url":null,"abstract":"Cardiovascular disease remains to be the major cause of death in Indonesia by 2018. Treatment to replace the ruptured blood vessel by a bypass surgery is often limited by the availability of autologous vascular, while the use of synthetic conduit is challenged by the mechanical mismatch and foreign body reactions. Tissue engineering offers a new approach to create artificial blood vessel with growth potential similar to the native tissue. This study aimed to develop the multiple layers of the cylindrical scaffold made of poly (lactic acid-co-ε-caprolactone) (PLCL) by the phase separation and the freeze drying method. The three types of scaffolds were fabricated: single layer, double and triple layer scaffold. The effect to the microstructural behaviour was observed using FESEM. The mechanical properties were characterized using ring tensile test. The biological properties including cell attachment and proliferation using endothelial cells (ECs) were evaluated during one week of culture. SEM observation revealed that the pore size increased as the number of layer increased. Single, double and triple layers of scaffolds had the average pore size of 219 μm2, 744 μm2 and 684 μm2, respectively. Meanwhile, the porosity significantly decreased with the increase number of layers. The porosity of single, double and triple layer scaffolds were 92.8%, 68.9 %, and 64.9%, respectively. As the porosity decreased, the mechanical properties including elastic modulus, tensile strength and burst pressure improved in significant amount. The elastic modulus increased 2 folds from the single layer (0.98 MPa), double layers (7.36 MPa) and triple layers (15.45 MPa) scaffolds. The tensile strength of single, double and triple layer scaffold were 216 kPa, 1039 kPa, and 1453 kPa, respectively. The burst pressure of the single layer scaffold was 119 mmHg and increased in double layers and triple layers scaffolds, 305 mmHg and 604 mmHg, respectively. An increased of cell proliferation on the PLCL scaffold during one week of culture indicated that the scaffold is biocompatible for tissue regeneration. This study demonstrated that the mechanical properties can be controlled by creating multiple layers of the cylindrical scaffold. The double and triple layers cylindrical scaffolds are potential candidates for vascular tissue engineering application.","PeriodicalId":217196,"journal":{"name":"2018 2nd International Conference on Biomedical Engineering (IBIOMED)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132837212","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}
Tassaneewan Laksanasopin, Phasathorn Suwansri, Passagorn Juntaramaha, Kanes Keminganithi, T. Achalakul
{"title":"Point-of-Care Device and Internet of Things Platform for Chronic Disease Management","authors":"Tassaneewan Laksanasopin, Phasathorn Suwansri, Passagorn Juntaramaha, Kanes Keminganithi, T. Achalakul","doi":"10.1109/IBIOMED.2018.8534812","DOIUrl":"https://doi.org/10.1109/IBIOMED.2018.8534812","url":null,"abstract":"Access to healthcare is limited for the population in rural areas due to the shortage of medical workerns, insufficient facilities, and the long commute to the hospital. As a result, hospitals and staff are overwhelmed by a lot of patients, yet patients do not receive appropriate care, especially in this growing diabetes and other noncommunicable diseases pandemic. Point-of-care test with an IoT platform can be used to offer a higher quality yet affordable healthcare solution to the community and minimize the workflow of healthcare workers.","PeriodicalId":217196,"journal":{"name":"2018 2nd International Conference on Biomedical Engineering (IBIOMED)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121239729","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":"Review of Optical Braille Recognition Using Camera for Image Acquisition","authors":"Bowo Nugroho, I. Ardiyanto, H. A. Nugroho","doi":"10.1109/IBIOMED.2018.8534739","DOIUrl":"https://doi.org/10.1109/IBIOMED.2018.8534739","url":null,"abstract":"Optical Braille Recognition (OBR) is a process used to recognize documents that contain Braille characters and to translate them into other characters. Several methods have been proposed for OBR, where each of them has advantages and disadvantages. Basically, OBR methods consist of several steps: image acquisition, image pre-processing, Braille dot detection, Braille cell segmentation and translation. Among the methods that have been proposed, one of the differences is the image acquisition techniques that use either scanners or cameras to capture images. This paper reviews several OBR methods that use camera on image acquisition process. Thus, it can be used as a reference for the development of future OBR.","PeriodicalId":217196,"journal":{"name":"2018 2nd International Conference on Biomedical Engineering (IBIOMED)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122557495","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}