97 resources related to Bone density
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IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.
The world's premiere conference in MEMS sensors, actuators and integrated micro and nano systems welcomes you to attend this four-day event showcasing major technological, scientific and commercial breakthroughs in mechanical, optical, chemical and biological devices and systems using micro and nanotechnology.The major areas of activity in the development of Transducers solicited and expected at this conference include but are not limited to: Bio, Medical, Chemical, and Micro Total Analysis Systems Fabrication and Packaging Mechanical and Physical Sensors Materials and Characterization Design, Simulation and Theory Actuators Optical MEMS RF MEMS Nanotechnology Energy and Power
The conference program will consist of plenary lectures, symposia, workshops andinvitedsessions of the latest significant findings and developments in all the major fields ofbiomedical engineering.Submitted papers will be peer reviewed. Accepted high quality paperswill be presented in oral and postersessions, will appear in the Conference Proceedings and willbe indexed in PubMed/MEDLINE & IEEE Xplore
The IEEE International Symposium on Biomedical Imaging (ISBI) is the premier forum for the presentation of technological advances in theoretical and applied biomedical imaging.ISBI 2019 will be the 16th meeting in this series. The previous meetings have played a leading role in facilitating interaction between researchers in medical and biological imaging. The 2019 meeting will continue this tradition of fostering cross fertilization among different imaging communities and contributing to an integrative approach to biomedical imaging across all scales of observation.
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
Specific topics of interest include, but are not limited to, sequence analysis, comparison and alignment methods; motif, gene and signal recognition; molecular evolution; phylogenetics and phylogenomics; determination or prediction of the structure of RNA and Protein in two and three dimensions; DNA twisting and folding; gene expression and gene regulatory networks; deduction of metabolic pathways; micro-array design and analysis; proteomics; ...
Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.
Telemedicine, teleradiology, telepathology, telemonitoring, telediagnostics, 3D animations in health care, health information networks, clinical information systems, virtual reality applications in medicine, broadband technologies, and global information infrastructure design for health care.
Measurements and instrumentation utilizing electrical and electronic techniques.
1998 IEEE Ultrasonics Symposium. Proceedings (Cat. No. 98CH36102), 1998
The goal was to evaluate the frequency dependence of ultrasonic attenuation coefficient /spl alpha/(f) in cancellous bone and to compare it to site- matched measurements of bone mineral density (BMD). Estimates of /spl alpha/(f) were obtained in immersion, in the through-transmit mode, by scanning 14 human bone specimens (calcaneus), using successively 3 pairs of focused transducers with center frequency of ...
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ, 1993
2017 8th International Conference on Computing, Communication and Networking Technologies (ICCCNT), 2017
Osteoporosis is a state of disease characterized by a degradation of bone mass and bone strength. About 200 million people are affected by Osteoporosis annually worldwide. There are several bone diseases that cause abnormalities of bone such as osteoporosis, rickets, osteomalacia, osteogenesisimperfecta, osteoporosis, fibrous dysplasia etc. Early diagnosis of osteoporosis is very essential and mandatory in current scenario. Life span ...
2018 11th International Multiconference Bioinformatics of Genome Regulation and Structure\Systems Biology (BGRS\SB), 2018
The aim: to identify the factors affecting bone mineral density (BMD) in patients with Hodgkin's lymphoma (HL). Methods: The study included 38 patients, from 19 to 70 years of age (median 49 years). The disease was staged according to the Ann Arbor staging system: 16 patients had early stage disease and 22 patients had advanced stage disease (stage III to ...
Proceedings of 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1994
Stiffness predictions from finite element (FEM) models are compared to measured values for three bovine vertebral bodies in compression. Young's modulus for trabecular bone was calculated using the measured apparent density and strain rate. Using this modulus, FEM models predicted a stiffness higher than the experimental values. The FEM models have a strong dependence on cortical thickness, yet a precise ...
Materials Challenges for Next-Generation, High-Density Magnetic Recording - Kazuhiro Hono: IEEE Magnetics Distinguished Lecture 2016
International Future Energy Challenge (IFEC) 2017
International Future Energy Challenge 2018
Infineon Technologies: Power Efficiency from Generation to Consumption
KeyTalks: The US Department of Energy's Perspective on Achieving Low Cost High Efficiency Energy
Next Generation Power Supplies - APEC 2016
2011 IEEE Medal for Innovations in Healthcare Technology - Harrison H. Barrett
Molecular Cellular Networks: A Non von Neumann Architecture for Molecular Electronics - Craig Lent: 2016 International Conference on Rebooting Computing
Erasing Logic-Memory Boundaries in Superconductor Electronics - Vasili Semenov: 2016 International Conference on Rebooting Computing
Facebook 10 Year Roadmap - Jin Bains - 5G World Forum Santa Clara 2018
KeyTalk with Xin Li and Shuai Jiang: Google 48V Power Architecture - APEC 2017
Neural Processor Design Enabled by Memristor Technology - Hai Li: 2016 International Conference on Rebooting Computing
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 3 of 7 - MEG and ULF-MRI
Larson Collection interview with Alvin Weinberg
Advances in MgB2 - ASC-2014 Plenary series - 7 of 13 - Wednesday 2014/8/13
Superconductive Energy-Efficient Computing - ASC-2014 Plenary-series - 6 of 13 - Wednesday 2014/8/13
The goal was to evaluate the frequency dependence of ultrasonic attenuation coefficient /spl alpha/(f) in cancellous bone and to compare it to site- matched measurements of bone mineral density (BMD). Estimates of /spl alpha/(f) were obtained in immersion, in the through-transmit mode, by scanning 14 human bone specimens (calcaneus), using successively 3 pairs of focused transducers with center frequency of 0.5, 1.0, and 2.25 MHz respectively in order to cover an extended frequency range from 0.2 to 2.0 MHz. Then, the attenuation coefficient was assumed to obey a simple power law /spl alpha//sub 0/+/spl alpha/1f/sup n/. The coefficients of the model were calculated using a non linear power fit least-squares calculations with respect to frequency over the 0.2-1.7 MHz bandwidth (resulting from the combination of the individual frequency bandwidth of each pair of transducers). The ultrasonic parameters n and /spl alpha//sub 1/ were compared to site-matched BMD values measured using X-ray quantitative computed tomography. On the average, the attenuation coefficient was found to increase as f/sup 1.1/spl plusmn/0.3/ (mean/spl plusmn/SD). Although, n was on the average close to 1, the values ranged from 0.4 to 2.2. A highly significant relationship was noted between /spl alpha//sub 1/ and BMD (r/sup 2/=0.75, p<10/sup -4/). No correlation was found between n and BMD. This frequency dependence of the attenuation coefficient has still to be validated by a theoretical model. However, these findings suggest the potential importance of additional parameters (besides the slope of the attenuation coefficient) for bone characterization.
Osteoporosis is a state of disease characterized by a degradation of bone mass and bone strength. About 200 million people are affected by Osteoporosis annually worldwide. There are several bone diseases that cause abnormalities of bone such as osteoporosis, rickets, osteomalacia, osteogenesisimperfecta, osteoporosis, fibrous dysplasia etc. Early diagnosis of osteoporosis is very essential and mandatory in current scenario. Life span and its quality can be increased with early diagnosis of osteoporosis. Various methods have been implemented to diagnose osteoporosis by measuring bone mineral density (BMD) of patients. These days Computer Aided Diagnostic (CAD) systems are used to detect osteoporosis more efficiently. This paper proposes a method to categorize healthy, osteopenia and osteoporosis bones based on white pixel calculation. This method is experimented on fifteen bone images as three in each category. The results obtained show that the number of white pixels for healthy femur bone is more than for osteopenic and osteoporotic femur bone. From the results obtained by the proposed method it is seen that there is a definite possibility of categorizing healthy and affected bones.
The aim: to identify the factors affecting bone mineral density (BMD) in patients with Hodgkin's lymphoma (HL). Methods: The study included 38 patients, from 19 to 70 years of age (median 49 years). The disease was staged according to the Ann Arbor staging system: 16 patients had early stage disease and 22 patients had advanced stage disease (stage III to IV). Thirty four subjects received first- and second-line regimens (ABVD, BEACOPP, DHAP). Four patients received other regimens, including DAL-HD-2002, ProMACE-CytaBOM, COPDIC, and COPP. Radiotherapy was performed in 28 individuals. High dose therapy with autologous stem cells rescue (HDCT-ASCT) was conducted in one patient. The BMD was assessed by dual-energy X-ray absorptiometry (DXA). Results: The decreased BMD was revealed in 20 observed HL subjects (52.6%). The decline in BMD was more frequent in patients aged ≥ 50 years as compared to younger ones (χ2 = 5.75; p = 0.02). More patients with radiotherapy in anamnesis had decreased BMD compared to patients who received chemotherapy only (χ2 = 8.82; p = 0.003). Osteopenia was found in patient with HDCT- ASCT. Nineteen patients received regimens containing glucocorticoids had decrease in BMD. Based on FRAX assessment, the 10-year risk of major low-energy fractures and the hip fractures was expectedly higher in patients with osteoporosis and osteopenia as compared to subjects with normal BMD (p <; 0.05). Conclusion: The decrease in BMD is associated with radiotherapy and chemotherapy with glucocorticoids in patients with HL.
Stiffness predictions from finite element (FEM) models are compared to measured values for three bovine vertebral bodies in compression. Young's modulus for trabecular bone was calculated using the measured apparent density and strain rate. Using this modulus, FEM models predicted a stiffness higher than the experimental values. The FEM models have a strong dependence on cortical thickness, yet a precise measurement of thickness was not possible.<<ETX>>
This note presents a new measure for bone mineral density analysis based on DEXA images. We are proposing an innovative procedure to calculate a scalar value that indicates the connectivity of bone mineral components. This method may provide a totally new measure for bone density study using DEXA scan images that can only calculate T and Z values and can only determine the quality of the bone in terms of the average intensity of bone density. The new measure proposed is called lambda-measure and it provides new research possibilities related to how well the bone components are connected. We can have lambdaTand lambdaZcorresponding to T and Z scores
Osteoporosis is a disease defined by decreased bone mass and alteration of microstructure which results in increased bone fragility and increased risk of fracture. An electromagnetic treatment having a pulsed output is adopted for prevention of induced osteoporosis in albino rats. Two groups of wistar rats were studied. Animals from group I were control and group II were experimental. Experimental group rats were bilaterally ovariectomized to induce osteoporosis. After one month of surgery capacitive coupled pulsed electric field delivered to one leg of experimatal rats and other leg kept as sham exposed. After 60 days of exposure treatment rats were sacrificed and femur and tibia bones were segregated into Control, Ovariectomized (OVX) and Ovariectomized+ Electrical stimulation (OVX+ES). The current study investigated the effect of external pused electric field exposure on induced osteoporotic rat bone quantity (bone density, bone mineral content and collagen I content) and quality (microstructure). Values of bone densities were fitted in multivariate regression model where bone mineral content and collagen I content were kept as independent variables.Capacitive pulsed electric field of specific characteristics prevents bone loss in ovariectomy induced osteoporotic bones. Bone density and mineral content of OVX+ES bones were significantly increased as compared to OVX bones. Biochemical analysis conveyed that exposed rat bones have high amount of collagen I than that of osteoporotic bones. Electron microscopic study revealed the enhancement of micro structural composition and compactness in cancellous part of treated bones.It is concluded that capacitive pulsed electric field can improve inorganic, organic and micro structural properties of bones.
Structural decay of bone is not fully assessed by current current X-ray gold standard, i.e., Dual X-ray absorptiometry (DXA), and there is an unmet need in identifying women at risk of fracture who should receive a treatment. Recent Bi-Directional Axial Transmission (BDAT) techniques exploit the multimode waveguide response of long bones such as the radius. The objective of this ex vivo study was to evaluate the performance of a prototype BDAT device to discriminate between fractured and non-fractured specimens under realistic fall loading conditions. Thirty radii from elderly donors (79 y.o. ± 12 y.o., 15 males, 15 females) underwent AT measurements using a 1-MHz prototype (Azalée, Paris, France). Singular value decomposition-based approach, combined with a 2-D transverse isotropic free plate waveguide model, was used to estimate cortical thickness and porosity. The radius were loaded at 2 m.s-2using a servo-hydraulic testing machine to mimic impact that corresponds to a fall. Radii were measured by Dual X-Ray absorptiometry to obtain bone mineral density values (g.cm-2) at radius distal end. Among the 30 radii, 14 had a fracture after the impact, leading to two groups (fractured F and non- fractured NF). Fracture prediction was significant for the subgroup F with Ct.Th and Ct.Po odds ratios [ORs] equals to 2.27 and 2.35 and areas under the receiver operating characteristic (ROC) curve [AUCs] to 0.74 and 0.76 lower than BMD (AUC = 0.81). When adjusted on radius diameter, AUC was equal to 0.80 and 0.82 for Ct.Po and DXA respectively. These results suggest that the multimode AT has the potential to yield cortical bone parameters to predict fracture risk in postmenopausal women.
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