1,488 resources related to Hyperthermia
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The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.
INTERMAG is the premier conference on all aspects of applied magnetism and provides a range of oral and poster presentations, invited talks and symposia, a tutorial session, and exhibits reviewing the latest developments in magnetism.
The conference provides an overview of the state of the art developments and innovations in Antennas, Propagation, and Measurements, highlighting the latest requirements for future applications.
The main conference scope is latest development in the area of electronics, signal processingand applications, information technologies and systems, computer modeling, and relateddisciplines.
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
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
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.
Computer, the flagship publication of the IEEE Computer Society, publishes peer-reviewed technical content that covers all aspects of computer science, computer engineering, technology, and applications. Computer is a resource that practitioners, researchers, and managers can rely on to provide timely information about current research developments, trends, best practices, and changes in the profession.
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.
The Canadian Journal of Electrical and Computer Engineering, issued quarterly, has been publishing high-quality refereed scientific papers in all areas of electrical and computer engineering since 1976. Sponsored by IEEE Canada (The Institute of Electrical and Electronics Engineers, Inc., Canada) as a part of its role to provide scientific and professional activity for its members in Canada, the CJECE complements ...
IEEE Antennas and Propagation Magazine, None
IEEE 1987 Ultrasonics Symposium, 1987
2008 14th Conference on Microwave Techniques, 2008
In this paper is presented our longstanding experience with combination of teleradiotherapy and superficial hyperthermia in the treatment of patients with head and neck cancers, especially in cases with superficial tumors or lymph node metastases, in the Institute of Radiation Oncology in Prague. Microwave thermotherapy - hyperthermia in combination with other treatment methods (mainly with teleradiotherapy) is currently very effective ...
IMTC/99. Proceedings of the 16th IEEE Instrumentation and Measurement Technology Conference (Cat. No.99CH36309), 1999
A new magnetoresistive sensor for its use in medicine apparatus of RF heating and hyperthermia is present. This sensor has DC output signal which is proportional to RF power absorbed in tissue. The operating principle of the sensor consists of multiplication of the instantaneous value of the RF current and voltage in a microstrip transmission line by using the special ...
IEEE Transactions on Magnetics, 1991
A fundamental study on the soft heating method for local hyperthermia is discussed. A heater made of temperature-sensitive amorphous metal flakes of various lengths was tested. The flakes were implanted in a phantom, and heating characteristics and temperature distribution established in the phantom were measured. The phantom test reveals that the flakes are able to heat a surround area of ...
In this paper is presented our longstanding experience with combination of teleradiotherapy and superficial hyperthermia in the treatment of patients with head and neck cancers, especially in cases with superficial tumors or lymph node metastases, in the Institute of Radiation Oncology in Prague. Microwave thermotherapy - hyperthermia in combination with other treatment methods (mainly with teleradiotherapy) is currently very effective and important method for cancer treatment. Technical equipment for before- mentioned therapeutic method in this clinical working place is described as well. The treatment results were evaluated after 1-2 month after end of treatment series by various examination methods. They are part of this paper as well.
A new magnetoresistive sensor for its use in medicine apparatus of RF heating and hyperthermia is present. This sensor has DC output signal which is proportional to RF power absorbed in tissue. The operating principle of the sensor consists of multiplication of the instantaneous value of the RF current and voltage in a microstrip transmission line by using the special constructed magnetoresistive element. At an operating frequency 915 MHz in a 20% bandwidth it has a sensitivity of 22 /spl mu/V/W, insertion losses less than 0.1 dB and no linearity less than 3% up to 300 Watts. The uncertainties caused by the reflected waves with arbitrary phase are less than 3.5% up to VSWR=3.
A fundamental study on the soft heating method for local hyperthermia is discussed. A heater made of temperature-sensitive amorphous metal flakes of various lengths was tested. The flakes were implanted in a phantom, and heating characteristics and temperature distribution established in the phantom were measured. The phantom test reveals that the flakes are able to heat a surround area of 5 mm. This 5 mm is considered as the therapeutical region. It is concluded that the soft heating device utilizing the flakes has a potential to be applied in clinical hyperthermia.<<ETX>>
Time Reversal Mirrors (TRM) are usually used in a low power regime. However, their potential applications in such various fields as hyperthermia or lithotripsy implies to investigate their behavior in a higher power regime. In such high power configurations, nonlinearities have to be taken into account. If one considers the acoustic wave equation in a non viscous medium [for example, Westerfeld's equation], the time reversal invariance holds. In a non linear regime, the shape of a sinusoid emitted by an acoustic source changes continuously during propagation as energy is transferred to harmonics. If this distorted signal is time reversed after some propagation distance and remitted in the opposite direction, it will suffer an inverse shape distortion during the propagation and finally recover a perfect sinusoidal shape. This property holds as long as the shock distance is not reached, otherwise the shock discontinuity implies an irreversible change of the entropy and the time reversal invariance is broken. The experimental evidence of such phenomenon is here presented. The experimental results are compared with 1D numerical simulations of Burgers equation.
An in-phase power divider with high power handling capability is presented. The proposed design is a modified structure of the traditional Gysel design. The modification includes using microstrip to slotline transitions to connect the input port to the two output ports with the aim to match the ports across wide band. As with the conventional design, the device uses an external isolation resistor, and thus it is suitable for high power microwave based applications. The proposed structure provides 53% fractional bandwidth (1.5-2.6 GHz) based on 15 dB of isolation as the reference. The simulated results show equal power division with 1 dB additional insertion loss, more than 15 dB of return loss at the input, 10 dB at the output ports, and 15 dB isolation while maintaining less than 10° phase imbalance between the output ports.
Design and development of a compact microstrip C-type patch applicator for hyperthermia treatment of cancer is presented. The patch antenna is optimized for resonance at 434 MHz, return loss (S11) better than -15dB and co-polarized electric field in tissue. Effect of water bolus thickness on power delivery is studied for improved power coupling. Numerical simulations for antenna design optimization carried out using EM simulation software, Ansys HFSS®, USA were experimentally verified. The effective field coverage for the optimized patch antenna and experimental results indicate that the compact antenna resonates at ISM frequency 434 MHz with better than -15 dB power coupling.
Magnetic hyperthermia is a promising cancer treatment technique based on selectively heating cancer cells to cause their death using the induction heating principles. In order to optimize the magnetic field generator, this paper proposes the design of a high-frequency high-power density inverter taking advantage of the recently developed high-voltage GaN devices and using an insulated metal substrate PCB for proper thermal management. The proposed converter is designed and implemented, showing its feasibility for the proposed application and enabling advanced treatments and an increased equipment portability.
A newly developed flexible spiral applicator, which realize wide band operation, is presented to achieve microwave heating for hyperthennia. The heating pattern of the applicator can be controlled by changing the applied frequency. The experimental results and the simulated ones using phantom modeling materials show that the applicator can be used to heat relatively wide portion effectively.
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