Pub Date : 2011-03-07DOI: 10.1109/BIOWIRELESS.2011.5724359
Fan Yang, A. Mohan
In radar based confocal microwave imaging for breast cancer detection, recorded data are synthetically focused to a confocal point within the breast. This is the basis for both data-independent and data adaptive methods to form the breast image and can be enhanced by multistatic approach. This approach inherently assumes that the propagation velocity depends only on the average dielectric property of the breast. However, in real cases, the breast tissues are inhomogeneous and therefore the propagation velocities vary for different propagation paths. Thus, use of an average propagation velocity can result in false localization. This paper proposes an auto-calibration method to compensate the time-of-arrival from confocal point to the receiving antennas. We demonstrate using simulations on FDTD numerical breast phantoms that the proposed method helps to form an enhanced image for inhomogeneous breast.
{"title":"Time-of-arrival calibration for improving the microwave breast cancer imaging","authors":"Fan Yang, A. Mohan","doi":"10.1109/BIOWIRELESS.2011.5724359","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2011.5724359","url":null,"abstract":"In radar based confocal microwave imaging for breast cancer detection, recorded data are synthetically focused to a confocal point within the breast. This is the basis for both data-independent and data adaptive methods to form the breast image and can be enhanced by multistatic approach. This approach inherently assumes that the propagation velocity depends only on the average dielectric property of the breast. However, in real cases, the breast tissues are inhomogeneous and therefore the propagation velocities vary for different propagation paths. Thus, use of an average propagation velocity can result in false localization. This paper proposes an auto-calibration method to compensate the time-of-arrival from confocal point to the receiving antennas. We demonstrate using simulations on FDTD numerical breast phantoms that the proposed method helps to form an enhanced image for inhomogeneous breast.","PeriodicalId":430449,"journal":{"name":"2011 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128182639","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}
Pub Date : 2011-03-07DOI: 10.1109/BIOWIRELESS.2011.5724357
O. Boric-Lubecke, V. Lubecke, I. Mostafanezhad
Medical Doppler radar research has largely been limited to obtaining respiratory and heart rates. While this information is vital for many applications, medical Doppler radar signatures carry significant other information that could lead to cardiopulmonary volume assessments, including cardiac stroke volume (SV), and cardiac output (CO). Accurate recovery of heart signal amplitude is required for these assessments. This paper presents the first analysis of amplitude modulation artifacts on heart signal recovery in Doppler radar systems. The sources of amplitude modulation artifacts are identified, including limitations of linear demodulation, and inherent affects of respiratory signal harmonics on heart signals. Experimental and simulation results demonstrate the validity of this analysis, and outline the path towards successful heart signal amplitude recovery.
{"title":"Amplitude modulation issues in Doppler radar heart signal extraction","authors":"O. Boric-Lubecke, V. Lubecke, I. Mostafanezhad","doi":"10.1109/BIOWIRELESS.2011.5724357","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2011.5724357","url":null,"abstract":"Medical Doppler radar research has largely been limited to obtaining respiratory and heart rates. While this information is vital for many applications, medical Doppler radar signatures carry significant other information that could lead to cardiopulmonary volume assessments, including cardiac stroke volume (SV), and cardiac output (CO). Accurate recovery of heart signal amplitude is required for these assessments. This paper presents the first analysis of amplitude modulation artifacts on heart signal recovery in Doppler radar systems. The sources of amplitude modulation artifacts are identified, including limitations of linear demodulation, and inherent affects of respiratory signal harmonics on heart signals. Experimental and simulation results demonstrate the validity of this analysis, and outline the path towards successful heart signal amplitude recovery.","PeriodicalId":430449,"journal":{"name":"2011 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129231142","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}
Pub Date : 2011-03-07DOI: 10.1109/BIOWIRELESS.2011.5724381
A. Tikka, M. Faulkner, S. Al-Sarawi
As the power is at a premium in a wireless powered microvalve, it necessitated the design and development of a contactless powering system specific to implant functionality. We present a custom design and development of the biotelemetry system for the implanted microvalve, using FEM modelling and experimental validation in the presence of numerical and physical human body phantoms, respectively. A comprehensive 3-dimensional FEM modelling and physical validation of an inductively coupled link comprising a 6×6×0.5 mm conformal spiral implanted antenna and a 8×5×0.2 cm spiral transmitter antenna is demonstrated. In addition to the investigation of the quality factor and inductance of individual coils, an analysis of the received relative signal response of the implanted antenna is presented.
{"title":"Secure wireless powering and interrogation of an implantable microvalve","authors":"A. Tikka, M. Faulkner, S. Al-Sarawi","doi":"10.1109/BIOWIRELESS.2011.5724381","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2011.5724381","url":null,"abstract":"As the power is at a premium in a wireless powered microvalve, it necessitated the design and development of a contactless powering system specific to implant functionality. We present a custom design and development of the biotelemetry system for the implanted microvalve, using FEM modelling and experimental validation in the presence of numerical and physical human body phantoms, respectively. A comprehensive 3-dimensional FEM modelling and physical validation of an inductively coupled link comprising a 6×6×0.5 mm conformal spiral implanted antenna and a 8×5×0.2 cm spiral transmitter antenna is demonstrated. In addition to the investigation of the quality factor and inductance of individual coils, an analysis of the received relative signal response of the implanted antenna is presented.","PeriodicalId":430449,"journal":{"name":"2011 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130617421","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}
Pub Date : 2011-03-07DOI: 10.1109/BIOWIRELESS.2011.5724346
R. Acierno, M. Maffia, L. Mainetti, L. Patrono, E. Urso
Radio Frequency Identification (RFID) is a very promising wireless technology able to trace and track individual objects. The pharmaceutical supply chain is a challenging scenario, where an item-level traceability is crucial to guarantee transparency and safety in the drug flow. Unfortunately, there are still some barriers limiting the large-scale deployment of these innovative technologies. In order to face these challenges, multidisciplinary skills are required. A recent research project has attempted to coordinate heterogeneous activities focused on drug traceability. One of these is related to the evaluation of potential effects of exposure to electromagnetic fields on drugs. This paper aims to briefly describe both the main features of the defined framework for the item-level tracing of drugs on the whole supply chain and the most interesting results obtained by the evaluation of the potential effects of RFID systems on drugs. In particular, the potential alterations of the molecular structure of a commercial human insulin preparation have been analyzed by using investigative techniques such as Reverse Phase-High Pressure Liquid Chromatography and in vitro cell proliferation assays. The experimental results are strongly encouraging the use of RFID-based technologies for item-level tracing systems in the pharmaceutical supply chain.
{"title":"RFID-based tracing systems for drugs: Technological aspects and potential exposure risks","authors":"R. Acierno, M. Maffia, L. Mainetti, L. Patrono, E. Urso","doi":"10.1109/BIOWIRELESS.2011.5724346","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2011.5724346","url":null,"abstract":"Radio Frequency Identification (RFID) is a very promising wireless technology able to trace and track individual objects. The pharmaceutical supply chain is a challenging scenario, where an item-level traceability is crucial to guarantee transparency and safety in the drug flow. Unfortunately, there are still some barriers limiting the large-scale deployment of these innovative technologies. In order to face these challenges, multidisciplinary skills are required. A recent research project has attempted to coordinate heterogeneous activities focused on drug traceability. One of these is related to the evaluation of potential effects of exposure to electromagnetic fields on drugs. This paper aims to briefly describe both the main features of the defined framework for the item-level tracing of drugs on the whole supply chain and the most interesting results obtained by the evaluation of the potential effects of RFID systems on drugs. In particular, the potential alterations of the molecular structure of a commercial human insulin preparation have been analyzed by using investigative techniques such as Reverse Phase-High Pressure Liquid Chromatography and in vitro cell proliferation assays. The experimental results are strongly encouraging the use of RFID-based technologies for item-level tracing systems in the pharmaceutical supply chain.","PeriodicalId":430449,"journal":{"name":"2011 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123350970","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}
Pub Date : 2011-03-07DOI: 10.1109/BIOWIRELESS.2011.5724340
A. Modiri, K. Kiasaleh
Wearable antennas (WAs) are critical to communication among in, on, or off-body devices, and have been designed for a variety of frequency and radiation requirements. However, various factors, such as position and orientation of body, etc., can affect the antenna performance drastically, and consequently cause undesirable radiation behavior. This paper aims at offering a practical solution to the real-time design of WAs for telemedicine. Due to flexibility and high convergence speed of Particle Swarm Optimization (PSO) algorithms, modified binary PSO is utilized to reconfigure a proposed WA in order to maintain resonance at 2.45GHz at different bend angles.
{"title":"Real time reconfiguration of wearable antennas","authors":"A. Modiri, K. Kiasaleh","doi":"10.1109/BIOWIRELESS.2011.5724340","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2011.5724340","url":null,"abstract":"Wearable antennas (WAs) are critical to communication among in, on, or off-body devices, and have been designed for a variety of frequency and radiation requirements. However, various factors, such as position and orientation of body, etc., can affect the antenna performance drastically, and consequently cause undesirable radiation behavior. This paper aims at offering a practical solution to the real-time design of WAs for telemedicine. Due to flexibility and high convergence speed of Particle Swarm Optimization (PSO) algorithms, modified binary PSO is utilized to reconfigure a proposed WA in order to maintain resonance at 2.45GHz at different bend angles.","PeriodicalId":430449,"journal":{"name":"2011 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134441814","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}
Pub Date : 2011-03-07DOI: 10.1109/BIOWIRELESS.2011.5724349
Yi Wang, Ruijun Fu, Y. Ye, U. Khan, K. Pahlavan
In this paper, we evaluate the factors affecting the accuracy achievable in localization of an endoscopic wireless capsule as it passes through the digestive system of the human body. Using a three-dimension full electromagnetic wave simulation model, we obtain bounds on the capsule-location estimation errors when the capsule is in each of three individual organs: stomach, small intestine and large intestine. The simulations assume two different external sensor arrays topologies. We compare these performance bounds and draw the conclusion that location-estimation errors are different for different organs and for various topologies of the external sensor arrays.
{"title":"Performance bounds for RF positioning of endoscopy camera capsules","authors":"Yi Wang, Ruijun Fu, Y. Ye, U. Khan, K. Pahlavan","doi":"10.1109/BIOWIRELESS.2011.5724349","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2011.5724349","url":null,"abstract":"In this paper, we evaluate the factors affecting the accuracy achievable in localization of an endoscopic wireless capsule as it passes through the digestive system of the human body. Using a three-dimension full electromagnetic wave simulation model, we obtain bounds on the capsule-location estimation errors when the capsule is in each of three individual organs: stomach, small intestine and large intestine. The simulations assume two different external sensor arrays topologies. We compare these performance bounds and draw the conclusion that location-estimation errors are different for different organs and for various topologies of the external sensor arrays.","PeriodicalId":430449,"journal":{"name":"2011 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133994421","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}
Pub Date : 2011-03-07DOI: 10.1109/BIOWIRELESS.2011.5724338
M. Kyro, J. Simola, K. Haneda, K. Takizawa, H. Hagiwara, P. Vainikainen
This paper presents the development of a radio channel model for the feasibility study of 60 GHz high-speed radio systems for a medical operation in a hospital environment. Our particular usage scenario is an angiography room, where the 60 GHz radio system sends video data from an x-ray machine to a movable screen. Our channel model is based on an extensive radio channel measurement in an angiography room in a hospital. Pathloss and multipath characteristics were statistically modeled, leading to a generic channel model in an angiography room. A channel model structure, complete set of model parameters, and implementation recipe of the developed model is provided.
{"title":"Development of a channel model for 60 GHz radio systems in an angiography room","authors":"M. Kyro, J. Simola, K. Haneda, K. Takizawa, H. Hagiwara, P. Vainikainen","doi":"10.1109/BIOWIRELESS.2011.5724338","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2011.5724338","url":null,"abstract":"This paper presents the development of a radio channel model for the feasibility study of 60 GHz high-speed radio systems for a medical operation in a hospital environment. Our particular usage scenario is an angiography room, where the 60 GHz radio system sends video data from an x-ray machine to a movable screen. Our channel model is based on an extensive radio channel measurement in an angiography room in a hospital. Pathloss and multipath characteristics were statistically modeled, leading to a generic channel model in an angiography room. A channel model structure, complete set of model parameters, and implementation recipe of the developed model is provided.","PeriodicalId":430449,"journal":{"name":"2011 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems","volume":"33 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123608914","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：