{"title":"Image-guided multiscale statistical model to mimic random bone structure","authors":"Z. Fang, W. Sun, B. Regli","doi":"10.1109/NEBC.2005.1431980","DOIUrl":"https://doi.org/10.1109/NEBC.2005.1431980","url":null,"abstract":"A multiscale voxel modeling approach was presented to model the bone structure both in macroscopic and microscopic level. Based on the digital image, the overall macroscopic geometry of the vertebrate was acquired by traditional reverse engineering technology and the microscopic random trabecular network was described by two-point correlation function and the function was then used to reconstruct the bone microstructure. It was shown that the reconstructed model is statistically equivalent to the original structure in the microscopic level and has the overall feature as original bone.","PeriodicalId":256365,"journal":{"name":"Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124367353","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}
K. Oum, J. Vega, L. Leodore, F. Forsberg, J. Liu, D. Merton, M. Wheatley
{"title":"Ultrasound contrast agents targeted to malignancies: optimizing cellular attachment","authors":"K. Oum, J. Vega, L. Leodore, F. Forsberg, J. Liu, D. Merton, M. Wheatley","doi":"10.1109/NEBC.2005.1431989","DOIUrl":"https://doi.org/10.1109/NEBC.2005.1431989","url":null,"abstract":"Hollow poly (lactic acid) (PLA) microcapsules were modified with Arg-Gly-Asp (RGD) peptide to create a targeted contrast agent (CA) that enhances ultrasound imaging. The RGD peptide targets cell-surface receptors (integrins /spl alpha//sub v//spl beta//sub 3/ and /spl alpha//sub v//spl beta//sub 5/) which are overexpressed in cancer and angiogenesis. The influence of RGD surface density and RGD spacer length were evaluated for their contribution to CA attachment to human breast cancer cells. The CA performance was dependent on both the RGD surface density and glycine spacer length and therefore should be considered in the design of a site-targeted CA. The optimized RGD peptide modified microcapsules are ideal candidates for targeted diagnostic imaging and for drug delivery.","PeriodicalId":256365,"journal":{"name":"Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.","volume":"11 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126317736","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 a microprocessor controlled cryosurgical system","authors":"P. Flosdorf, J. Enderle","doi":"10.1109/NEBC.2005.1431935","DOIUrl":"https://doi.org/10.1109/NEBC.2005.1431935","url":null,"abstract":"This paper presents the development of a microprocessor controlled cryosurgical system optimized for dermatologic cryosurgery. The cryosurgical system was developed to provide the user with the accurate control of the three critical parameters of cryosurgery; rate of freeze, duration of ice ball formation, and rate of tissue thaw. The design, based on the Joule-Thompson principle, provides accurate control of the high-pressure nitrous oxide gas, and demonstrates two distinct advantages not currently available with the traditional liquid nitrogen systems. The first is a user defined temperature selection, which allows the clinical practitioner to select the optimal probe temperature for specific cases, and the second is the inclusion of predefined tissue thaw cycles that will provide increased tissue destruction over the currently used spontaneous thaw practice. Design for this instrument was based on physiologic properties obtained from clinical and tissue modeling studies. Cryo-system theory and resources provided by MIRA, Inc. (Uxbridge, Massachusetts) also provided the basis for the development of this system.","PeriodicalId":256365,"journal":{"name":"Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125756311","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":"Investigating respiratory variation using a forehead reflectance pulse oximeter to identify airway obstruction for automated remote triage","authors":"J. Chang, S. McGrath, G. Blike","doi":"10.1109/NEBC.2005.1432011","DOIUrl":"https://doi.org/10.1109/NEBC.2005.1432011","url":null,"abstract":"An automated triage system called ARTEMIS has been developed in an effort to improve combat and multicasualty care within the battlefield or disaster zone. The status of airway, breathing, and circulation is critical in these types of situations. This preliminary study uses sleep apnea patients to determine whether certain features can be extracted from the photoplethysmograph of a Nonin/spl reg/ forehead reflectance pulse oximeter, which might be indicative of airway obstruction.","PeriodicalId":256365,"journal":{"name":"Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121860567","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":"Computer aided tissue engineering design for a spinal intervertebral disc","authors":"P. Evans, B. Starly, W. Sun","doi":"10.1109/NEBC.2005.1432005","DOIUrl":"https://doi.org/10.1109/NEBC.2005.1432005","url":null,"abstract":"Degeneration of the intervertebral disc with age has been shown to be a significant source of pain and discomfort in the elderly, resulting in decreased mobility and functionality of the intervertebral joints of the spine. Current treatments of disc degeneration disease have focused on the fixation of the vertebra-disc-vertebra interface by fusing the vertebra together, thus limiting and stabilizing the intervertebral motion, reducing the pain associated with degenerated disc motion. Other treatments have consisted of entirely replacing the intervertebral disc, restoring function to the spine without reducing the range of motion. However, the long term results of these two forms of treatment have been less than satisfactory, demanding a new approach to repair degenerated intervertebral discs. The approach used in this study is to develop an intervertebral disc with the mechanical characteristics necessary to function in the lumbar spine environment, while incorporating a scaffold structure into the implant design. This approach will provide a mechanically stable base structure for tissue engineering, allowing for the development of an implant with improved long term characteristics, and enhanced vertebral fixation due to the incorporation of cells into the disc structure, as compared to the currently used methods.","PeriodicalId":256365,"journal":{"name":"Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122257379","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":"Alginate encapsulation and hepatic differentiation of embryonic stem cells","authors":"T. Maguire, E. Novik, R. Schloss, M. Yarmush","doi":"10.1109/NEBC.2005.1431997","DOIUrl":"https://doi.org/10.1109/NEBC.2005.1431997","url":null,"abstract":"The emergence of cell based clinical technologies has been limited by the need for large cell masses (>10/sup 11/ cells). Embryonic stem cells are a promising solution to this cell source limitation because they are highly proliferative, renewable and pluripotent. Although many investigators have described techniques to effectively differentiate stem cells into a variety of mature cell lineages, these fall short in a number of ways including: 1) low yields of fully differentiated cells, 2) absence of large scale processing considerations and 3) ineffective downstream enrichment. Thus, a tissue culture microenvironment is required that may be modified to increase regulation of embryonic stem cell differentiation, and scaled to increase differentiated cell yield. Microencapsulation provides a vehicle for the discrete control of key cell culture parameters such as cell seeding density, rigidity, and substrate surface microarchitecture. In order to assess the feasibility of directing stem cell differentiation via microenvironment regulation, we have developed a murine embryonic stem cell (ES) alginate poly-L-lysine microencapsulation differentiation system. Our results indicate that the alginate microenvironment is biocompatible, is conductive to ES cell differentiation, and maintains differentiated cellular function. In addition, changes in alginate concentration and cell seeding density have proven effective in modulating differentiation as well as mature hepatic function.","PeriodicalId":256365,"journal":{"name":"Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.","volume":"110 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132004253","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}
C. Weaver, R. Martinez, C. Maier, C. Cerqueira, R. Foulds
{"title":"Design of a wearable eye-gaze communication system for people with severe neuromuscular impairment","authors":"C. Weaver, R. Martinez, C. Maier, C. Cerqueira, R. Foulds","doi":"10.1109/NEBC.2005.1431909","DOIUrl":"https://doi.org/10.1109/NEBC.2005.1431909","url":null,"abstract":"The wearable eye-gaze communication system is an alternative and augmentative communication (AAC) device for individuals with severe neuromuscular impairment as a result of amyotrophic lateral sclerosis (ALS), cerebral palsy, stroke, or traumatic brain injury (TBI).","PeriodicalId":256365,"journal":{"name":"Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131796927","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":"Computer automated experimentation for the control and assessment of the classically conditioned eye blink response","authors":"B.R. Chumpitaz, S. Nazir, Y. Patel, M. Bergen","doi":"10.1109/NEBC.2005.1432021","DOIUrl":"https://doi.org/10.1109/NEBC.2005.1432021","url":null,"abstract":"The classically conditioned eye blink experiment provides another way to study associative learning. This type of associative learning has many important features which are helpful in neurological studies such as Parkinson's disease, Alzheimer's disease, and chronic fatigue syndrome. Our goal was to design a portable medical device for East Orange, Veteran Affairs Medical Center, which collects electromyogram, electrocardiogram and respiration signals from a human subject for biomedical research studies. The major priorities of this project were to reduce power consumption, person's safety, increase portability and to use the latest technologies for the device. LabView 6.0 was used for this system which collects data from the subject and transferred it to the computer. Hardware components for this system provide acoustic signals, air puff to eye for blinking, and detect condition physiological signals.","PeriodicalId":256365,"journal":{"name":"Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115440202","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 a pulse oximeter analyzer for the developing world","authors":"H. Deni, D. Muratore, R. Malkin","doi":"10.1109/NEBC.2005.1432003","DOIUrl":"https://doi.org/10.1109/NEBC.2005.1432003","url":null,"abstract":"Pulse oximetry has become the standard clinical method for monitoring patient's blood oxygen saturation and heart rate. Therefore hospitals need a straightforward means to check the accuracy of pulse oximeters. Due to the economic constraints in the developing world, commercial pulse oximeter testers often can not be afforded. Thus, the purpose of this project is to design a small, inexpensive pulse oximeter analyzer for developing world hospitals.","PeriodicalId":256365,"journal":{"name":"Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114939129","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":"Optical assessment of apparent phase velocity: carotid-temporal photoplethysmograph flow waves in response to apnea","authors":"M. Desiderio","doi":"10.1109/NEBC.2005.1431969","DOIUrl":"https://doi.org/10.1109/NEBC.2005.1431969","url":null,"abstract":"Optic sensors of blood flow can provide noninvasive assessment of elastic properties of extracranial vessels. Photoplethysmographic data can be used to assess pulse velocities as blood is transmitted from the carotid to the temporal artery. Apparent phase velocities give much information regarding the transmission of pulse waves by examining frequency characteristics of flow. The apparent phase velocities through this vascular segment increases in periods of apnea, especially in the higher frequency components, indicating response of increased vascular stiffness of the extracranial arteries.","PeriodicalId":256365,"journal":{"name":"Proceedings of the IEEE 31st Annual Northeast Bioengineering Conference, 2005.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116461989","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}