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Welcome to the Pubget Medical Subject Headings (MESH) browser. Click on a topic or subtopic below to explore related papers. In the gold box is the most recent paper about the current MESH term, and below are 20 related papers.
Electromagnetic Phenomena (4):
Recent article
Electromagnetic Phenomena
Abstract
New hardware and software algorithms in electromagnetic tracking for computer assisted surgery (CAS) have been developed. We aimed to compare electromagnetic tracking for navigated procedures in frontal skull base surgery to optical tracking.
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PMID: 21858270
PDF is available here.
PDF is available here.
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Medical Physics (38)5 2011
Abstract
To evaluate both the Calypso Systems' (Calypso Medical Technologies, Inc., Seattle, WA) localization accuracy in the presence of wireless metal-oxide-semiconductor field-effect transistor (MOSFET) dosimeters of dose verification system (DVS, Sicel Technologies, Inc., Morrisville, NC)...
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PMID: 21776780
PDF is available here.
PDF is available here.
Abstract
We demonstrate that molecule-to-surface bonding may be characterized during electron transport by 'fishing-mode' tip-enhanced Raman spectroscopy (FM-TERS). This technique allows mutually verifiable single-molecule conductance and Raman signals with single-molecule contributions to be acquired simult...
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PMID: 21556059
PDF is available here.
PDF is available here.
Critical Care Medicine (39)1 2011
Abstract
Head-to-head comparison of the success rate of jejunal placement of a new electromagnetically visualized jejunal tube with that of the endoscopic technique in critically ill patients.
: Prospective, randomized clinical trial.
Two intensive care units at a university hospital.
: A total of 66 critica...
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PMID: 21037470
PDF is available here.
PDF is available here.
Abstract
We derive spatial transmission properties and the relationship of the relation detected points distances, and valuate the properties of each unit by statistical valuation theory. This chapter gives the experimental data analysis results....
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PMID: 21431589
PDF is available here.
PDF is available here.
Analysis of neural sources of p300 event-related potential in normal and schizophrenic participants.
Abstract
Our results show that the cingulate gyrus is not activated in comparison with normal group, which is in line with previous results that dysfunction of the anterior cingulate cortex plays a prominent role in the schizophrenia disorder....
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PMID: 21431600
PDF is available here.
PDF is available here.
Abstract
Prostate cancer patients treated with reduced margins and tumor tracking had less radiotherapy-related morbidity than their counterparts treated with conventional margins. Highly contoured intensity-modulated radiotherapy shows promise as a successful strategy for reducing morbidity in prostate canc...
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PMID: 20153881
PDF is available here.
PDF is available here.
Ultrasonics (50)6 2010
Abstract
In spite of many advances in analytical and numerical modeling techniques for solving different engineering problems, an efficient solution technique for wave propagation modeling of an electromagnetic acoustic transducer (EMAT) system is still missing. Distributed point source metho...
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PMID: 20071000
PDF is available here.
PDF is available here.
Abstract
The multiple signal classification (MUSIC) type method has been widely used to detect point-like scatterers embedded in a homogeneous background medium. This paper extends the MUSIC-type method to the detection of point-like scatterers that are embedded in an inhomogeneous background. Although the b...
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PMID: 20370022
PDF is available here.
PDF is available here.
Abstract
In the first part, the senior nurse was successful in 72% of cases. There was a clear learning curve. In the second part, the 4 newly instructed nurses had a success rate of 89.4% without an evident learning curve. In the third part, successful feeding tube positioning was achieved in 78% of critica...
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PMID: 20170911
PDF is available here.
PDF is available here.
Hawaii medical journal (69)4 2010
Abstract
Energy absorbtion from particles and photons moving at relativistic speeds has been a fundamental part of life on earth and wherever else life might exist. Heat and visible light have deeply influenced the course of human evolution, affecting habitat and nutrition. The photons of ionizing radiation...
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PMID: 20481234
PDF is available here.
PDF is available here.
Methods in Molecular Biology (624)624 2010
Abstract
We have recently investigated a novel method which brings aerosol delivery to an advanced level of specificity by making use of magnetic gradient fields to direct magnetizable aerosol droplets containing superparamagnetic iron oxide nanoparticles (SPION) specifically to desired regions of the lungs...
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PMID: 20217602
PDF is available here.
PDF is available here.
Abstract
Results obtained by both methods demonstrated significant CROM limitations in the symptomatic group. The VR measures showed greater CROM and sensitivity while conventional measures showed greater specificity. A single session exposure to VR resulted in a significant increase in CROM. CONCLUSION: Nec...
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PMID: 20110842
PDF is available here.
PDF is available here.
Abstract
Abstract
Abstract
The term of bioelectromagnetism include electromagnetosenzitive processes at the fundamental interaction of energetical fields with the matter. The alive matter has a dynamical, chemical and energetics structure, but above all, an intense informational activity. The bioelectromagnetism was gradually...
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PMID: 20509314
PDF is available here.
PDF is available here.
Abstract
Rotational stability of the knee has been traditionally difficult to quantify, limiting the ability of the orthopedic community to determine the potential role of rotational laxity in the etiology of anterior cruciate ligament (ACL) injuries. The purposes of this multicenter cohort study were to eva...
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PMID: 20020101
PDF is available here.
PDF is available here.
Optics Express (17)24 2009
Abstract
Radiation force of a focused scalar twisted Gaussian Schell-model (TGSM) beam on a Rayleigh dielectric sphere is investigated. It is found that the twist phase affects the radiation force and by raising the absolute value of the twist factor it is possible to increase both transverse and longitudina...
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PMID: 19997388
PDF is available here.
PDF is available here.
Optics Express (17)23 2009
Abstract
We solve this problem by developing a new, unified PML algorithm that can effectively truncate all types of linearly dispersive materials. The unification of the algorithm is achieved by employing a general form of the medium permittivity that includes three types of dielectric response functions, k...
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PMID: 19997357
PDF is available here.
PDF is available here.
Optics Express (17)23 2009
Abstract
We find that, for all 11 tested nonmagnetic metals, for the whole spectral region of terahertz wave, and for the wide radius range from 10 microm to infinity, the relative deviation for the effective index is always smaller than 5%. This good agreement clearly shows that the derived expression can b...
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PMID: 19997314
PDF is available here.
PDF is available here.
Optics Express (17)23 2009
Abstract
We demonstrate that complex gradient index optics can be constructed exhibiting low material losses and large frequency bandwidth. Although the range of structures is limited to those having only electric response, with an electric permittivity always equal to or greater than unity, there are still...
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PMID: 19997341
PDF is available here.
PDF is available here.
Optics Express (17)23 2009
Abstract
We experimentally demonstrate that hybridized nanocavities in optically thick metal films radiate in coherence, and act as an efficient single-polarized plasmonic nano-antenna array. We employ propagating and localized plasmons to enhance polarization control along one axis, with total suppression o...
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PMID: 19997327
PDF is available here.
PDF is available here.
Optics Express (17)23 2009
Abstract
We consider amplitude and phase characteristics of light reflected under the Surface Plasmon Resonance (SPR) conditions and study their sensitivities to refractive index changes associated with biological and chemical sensing. Our analysis shows that phase can provide at least two orders of magnitud...
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PMID: 19997358
PDF is available here.
PDF is available here.
Abstract
The objective of this study was to develop a method to assess the accuracy of an electromagnetic technology image-free navigation system for total knee arthroplasty in a leg with normal or abnormal mechanical alignment. An acrylic phantom leg was constructed to simulate tibia and femur deformation....
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PMID: 18506443
PDF is available here.
PDF is available here.
Abstract
An endorectal coil is built to demonstrate the effectiveness of the design strategy. ISNR of the endorectal coil approximates the UISNR to 72%. CONCLUSION: An internal coil design method that takes advantage of the UISNR and optimum coil sensitivity calculations was presented. This method can also b...
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PMID: 19326160
PDF is available here.
PDF is available here.
Medical Physics (36)8 2009
Abstract
Radiography or computed tomography is the most widely available imaging tool for foreign body detection. However, the detectability of low-density substances by x ray is very poor when located in soft tissues. Various dielectric loss factors of foreign bodies contribute great microwave absorption he...
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PMID: 19746776
PDF is available here.
PDF is available here.
Medical Physics (36)8 2009
Abstract
The Calypso Medical 4D localization system utilizes alternating current electromagnetics for accurate, real-time tumor tracking. A quality assurance program to clinically implement this system is described here. Testing of the continuous electromagnetic tracking system (Calypso Medical Technologies,...
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PMID: 19746781
PDF is available here.
PDF is available here.
Abstract
The present paper reviewes the literatures on the electromagnetic characteristic of meridians at home and abroad in the last twenty years. It generally summarize the studies on the electromagnetic characteristic of meridians from the aspects of the imaging of meridians, the electromagnetic model of...
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PMID: 19947267
PDF is available here.
PDF is available here.
Optics Express (17)14 2009
Abstract
We derive the numerical field (NF) from the plane wave spectrum method. WTF is compared with NF and Lax series field (LSF). Results show that LSF is accurate close to the beam axis and divergent far from the beam axis, and WTF is always accurate. Moreover, electron dynamics in a tightly focused inte...
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PMID: 19582099
PDF is available here.
PDF is available here.
Optics Express (17)14 2009
Abstract
We propose and describe a new class of optical modes consisting of superposition of three waveguide modes which can be supported by a few-mode waveguide spatially modulated by two co-spatial gratings. These supermodes bear a close, but not exact, formal analogy to the three-level quantum states invo...
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PMID: 19582085
PDF is available here.
PDF is available here.
Abstract
We have followed a particular biomimetic strategy where ultrasonically or electromagnetically stimulated SAOS-2 human osteoblasts proliferated and built their extracellular matrix on a titanium plasma-spray surface. In comparison with control conditions, the ultrasonic stimulation (average power, 14...
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PMID: 19119923
PDF is available here.
PDF is available here.
Abstract
We have designed a water-filled testbed propagating a controlled electric field with respect to pulse shape, power, and polarization. Directional coupler line sections permit measurement of incident, reflected, and transmitted powers. Both S-parameters and E(y) measurement show that the electric-fie...
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PMID: 19566215
PDF is available here.
PDF is available here.
Abstract
Both assessments showed non-biased results between tests and between testers (P > 0.1). Full-cycle repeatability coefficients ranged between 15.0 degrees and 29.2 degrees with smaller values for rotation and for the VR assessment. A single VR session significantly increased ROM, with largest effect...
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PMID: 19404177
PDF is available here.
PDF is available here.
Abstract
OBJECTIVE-To determine whether larkspur-derived N-(methylsuccinimido) anthranoyllycoctonine (MSAL)-type alkaloids alter heart rate and electrically evoked electromyographic (eEMG) response of the external anal sphincter (EAS) in cattle and whether these effects can be reversed by acetylcholinesteras...
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PMID: 19335112
PDF is available here.
PDF is available here.
Nanotechnology (20)12 2009
Abstract
We investigated electronic properties of a biochemically synthesized cobalt oxide bionanodot (Co-BND) by means of scanning tunneling microscopy/spectroscopy (STM/STS) and Kelvin-probe force microscopy (KFM). Experimentally obtained I-V characteristics and numerically obtained dI/dV and (dI/dV)/(I/V)...
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PMID: 19420479
PDF is available here.
PDF is available here.
Nanotechnology (20)12 2009
Abstract
Gadolinium oxide host and europium/dysprosium/terbium doped gadolinium oxide nanoparticles were synthesized using the sonochemical technique. Gadolinium oxide nanocrystals were also co-doped with total 2 mol% of Eu(3+)/Dy(3+),Eu(3+)/Tb(3+),Dy(3+)/Tb(3+), and also Eu(3+)/Dy(3+)/Tb(3+) ions, by the sa...
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PMID: 19420484
PDF is available here.
PDF is available here.
Medical Physics (36)3 2009
Abstract
When choosing an electromagnetic tracking system (EMTS) for image-guided procedures several factors must be taken into consideration. Among others these include the system's refresh rate, the number of sensors that need to be tracked, the size of the navigated region, the system interaction with the...
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PMID: 19378748
PDF is available here.
PDF is available here.
Abstract
One hundred seven patients were evaluated in the trial: 57 in the standard group and 50 in the EM-guided group. Demographic data, percent intubated, and admission diagnosis were similar in both groups. Forty-one of 50 patients (82%) in the EM-guided group had successful placement compared with 22 of...
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PMID: 19188874
PDF is available here.
PDF is available here.
Optics Express (17)5 2009
Abstract
We have found that the useful length of a photonic nanojet can be increased by an order-of-magnitude to approximately 20 wavelengths. This is effectively a quasi one-dimensional light beam which may be useful for optical detection of natural or artificially introduced nanostructures deeply embedded...
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PMID: 19259213
PDF is available here.
PDF is available here.
Abstract
The technological complexity of implantable devices for managing arrhythmias, specifically pacemakers and defibrillators, has increased spectacularly since their introduction a few decades ago. A growing number of patients with these devices are undergoing surgery and it is therefore essential to un...
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PMID: 19334658
PDF is available here.
PDF is available here.
Abstract
This feasibility study introduces the use of a classifier based on electrical spectroscopy measurements for breast cancer tissue characterization. The classifier is of the support vector machine type, and the vector of data is made of electrical voltage measurements at 12 discrete electrical excitat...
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PMID: 19342332
PDF is available here.
PDF is available here.
Ear and Hearing (30)1 2009
Abstract
If stimulus artifact is present in the recorded EEG, for certain choices of carrier frequency and sampling rate it is possible to record artifactual signals at the same modulation rates as those used to elicit ASSRs. This is problematic as the artifact may then be misinterpreted as an ASSR response....
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PMID: 19050642
PDF is available here.
PDF is available here.
Physical Review Letters (102)4 2009
Abstract
We report the first experimental observation of Dyakonov surface waves existing at the interface of transparent anisotropic crystals. A Otto-Kretchmann configuration was used to excite the surface waves at the interface between a potassium titanyl phosphate biaxial crystal and an index-matching liqu...
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PMID: 19257419
PDF is available here.
PDF is available here.
Abstract
These results provide information for approximating the threshold electric field values of phosphenes and vertigo-like effects....
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PMID: 19098349
PDF is available here.
PDF is available here.
Abstract
The ISQ values of mini-implants correlated linearly with peri-implant radiographic bone density (r = 0.92, P < .0001), cortical bone thickness (r = 0.90, P < .0001), and percussion test values (r = -0.91, P < .0001), respectively. In addition, by means of the calculation of 99% confidence intervals,...
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PMID: 19885404
PDF is available here.
PDF is available here.
Optics Express (17)1 2009
Abstract
We demonstrate numerically that acoustooptic interaction between two co-propagating modes in an optical fiber can be utilized to obtain optical delays. Both positive and negative delays of several pulse lengths can be obtained. Based on the simulations we consider relevant experimental parameters....
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PMID: 19129903
PDF is available here.
PDF is available here.
Versicherungsmedizin / herausgegeben von Verband der Lebensversicherungs-Unternehmen e.V. und Verband der Privaten Krankenversicherung e.V (60)4 2008
Abstract
Abstract
This article reviews the sources of exposure and health effects of common toxicants encountered by patients in primary care practice. The recognition and management of exposure to indoor and outdoor pollutants, heavy metals, pesticides, electromagnetic fields, and endocrine-disrupting chemicals are...
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PMID: 18928826
PDF is available here.
PDF is available here.
Abstract
This paper focuses on the gesture analysis in order to compare two human gestures. The orientations and the positions of the gestures are both taken into account and the similarity rate between two gestures is calculated. In our case, the application is in obstetrics and the aim is to evaluate force...
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PMID: 18479975
PDF is available here.
PDF is available here.
Abstract
We report the development of a collection of anatomically realistic 3-D numerical breast phantoms of varying shape, size, and radiographic density which can readily be used in finite-difference time-domain computational electromagnetics models. The phantoms are derived from T1-weighted MRIs of prone...
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PMID: 19126460
PDF is available here.
PDF is available here.
Abstract
Single center, single operator experience with two types of lithotriptor indicated that both are equally efficacious, with similar safety profiles. The only significant difference was that the EH lithotriptor required fewer shockwaves for fragmentation....
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PMID: 18822451
PDF is available here.
PDF is available here.
Abstract
Abstract
Linear local shortening was significantly improved in the F group compared with controls (F: 0.51% +/- 1.57% [P < .05], U: -1.06% +/- 1.84%, D: -2.72% +/- 2.59%), whereas it was inferior to the normal myocardium (13.7% +/- 4.3%; P < .05). Mean electrical activity was 1.49 +/- 0.82 mV in the F group,...
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PMID: 19026821
PDF is available here.
PDF is available here.
Abstract
In 1821, Fresnel obtained the wave surface of an optically biaxial crystal, assuming that light waves are vibrations of the ether in which longitudinal vibrations (P waves) do not propagate. An anisotropic elastic medium mathematically analogous to Fresnel's crystal exists. The medium has four elast...
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PMID: 19062845
PDF is available here.
PDF is available here.
Abstract
We have previously demonstrated that endogenous cortisol concentrations correlate with the asymmetry of cortical activity related to episodic memory in healthy subjects and depressed patients. To further-examine whether this is due to a causal effect of cortisol on the laterality of episodic memory,...
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PMID: 18187154
PDF is available here.
PDF is available here.
Orthopedics (31)10 Suppl 1 2008
Abstract
We evaluated the accuracy of navigation systems for measuring the mechanical axis in patients undergoing total knee arthroplasty and in the synthetic bone model. Infrared optical and electromagnetic navigation systems were compared. Both systems were found to be accurate and reproducible in an exper...
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PMID: 19298030
PDF is available here.
PDF is available here.
Abstract
We performed microwave dielectric spectroscopy and optical diffuse reflectance spectroscopy measurements at the same sites on freshly excised normal breast tissues obtained from reduction surgeries at the University of Wisconsin Hospital, using microwave and optical probes with very similar sensing...
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PMID: 18838370
PDF is available here.
PDF is available here.
Journal of Biomechanics (41)13 2008
Abstract
This article introduces a method to capture the movements of the upper and the lower limb of infants using an electromagnetic tracking system and to reliably calculate the segmental kinematics. Analysis of the spontaneous movements of infants is important e.g. in the context of the "General Movement...
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PMID: 18707688
PDF is available here.
PDF is available here.