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Full-Text Articles in Engineering
Magneto-Radiotherapy: Effect Of Magnetic Field On Dose Distribution And Rbe, Heidi Nettelbeck, Anatoly Rosenfeld, George Takacs, Michael Lerch
Magneto-Radiotherapy: Effect Of Magnetic Field On Dose Distribution And Rbe, Heidi Nettelbeck, Anatoly Rosenfeld, George Takacs, Michael Lerch
Michael L.F. Lerch
Magneto-radiotherapy is the application of magnetic fields during radiotherapy procedures. It aims to improve the quality of cancer treatment by altering the dose deposition of charged particles in the tissue volume being targeted. Our research has focused on applying the concept of magneto-radiotherapy to conventional linac treatment and MRT (Microbeam Radiation Therapy) oncology modalities.
Magnetovolume Effect In Ho2fe17-Xmnx Compounds, Jianli Wang, A Studer, S Kennedy, R Zeng, S. Dou, S Campbell
Magnetovolume Effect In Ho2fe17-Xmnx Compounds, Jianli Wang, A Studer, S Kennedy, R Zeng, S. Dou, S Campbell
Jianli Wang
The structural and magnetic properties of seven compounds in the Ho2Fe17-xMnx series (x = 0-5) have been investigated. The spontaneous magnetization Ms at 10 K exhibits a minimum at x ≈ 3.8 while the 3d-sublattice magnetization MT is found to decrease at ∼ −3.4 μB/per Mn atom compared with the rate of ∼−2.0 μB/per Mn atom expected from a simple dilution model. All of the Ho2Fe17-xMnx compounds exhibit anisotropic thermal expansion below their Curie temperatures leading to the presence of strong magnetovolume effects and Invar-type behavior below TC. An approximately zero volume thermal expansion has been detected between 10 K …
Effect Of A Magnetic Field On The Track Structure Of Low-Energy Electrons: A Monte Carlo Study, M Bug, E Gargioni, Susanna Guatelli, S Incerti, H Rabus, R Schulte, Anatoly Rosenfeld
Effect Of A Magnetic Field On The Track Structure Of Low-Energy Electrons: A Monte Carlo Study, M Bug, E Gargioni, Susanna Guatelli, S Incerti, H Rabus, R Schulte, Anatoly Rosenfeld
Susanna Guatelli
The increasing use of MRI-guided radiation therapy evokes the necessity to investigate the potential impact of a magnetic field on the biological effectiveness of therapeutic radiation beams. While it is known that a magnetic field, applied during irradiation, can improve the macroscopic absorbed dose distribution of electrons in the tumor region, effects on the microscopic distribution of energy depositions and ionizations have not yet been investigated. An effect on the number of ionizations in a DNA segment, which is related to initial DNA damage in form of complex strand breaks, could be beneficial in radiation therapy. In this work we …
Effect Of Transverse Magnetic Fields On Dose Distribution And Rbe Of Photon Beams: Comparing Penelope And Egs4 Monte Carlo Codes, Heidi Nettelbeck, George Takacs, Anatoly Rosenfeld
Effect Of Transverse Magnetic Fields On Dose Distribution And Rbe Of Photon Beams: Comparing Penelope And Egs4 Monte Carlo Codes, Heidi Nettelbeck, George Takacs, Anatoly Rosenfeld
George Takacs
The application of a strong transverse magnetic field to a volume undergoing irradiation by a photon beam can produce localized regions of dose enhancement and dose reduction. This study uses the PENELOPE Monte Carlo code to investigate the effect of a slice of uniform transverse magnetic field on a photon beam using different magnetic field strengths and photon beam energies. The maximum and minimum dose yields obtained in the regions of dose enhancement and dose reduction are compared to those obtained with the EGS4 Monte Carlo code in a study by Li et al (2001), who investigated the effect of …