Results 61 to 70 of about 158,771 (296)

Transitioning from conventional photon therapy to proton therapy for primary brain tumors

Acta Oncologica, 2023
Proton radiation therapy (PT) has become a treatment option alongside photon therapy (XRT) for lower-grade gliomas (LGG). In this single-institution retrospective study, we investigate the patient characteristics and treatment outcomes, including pseudo-progression (PsP), for LGG patients selected for PT.Adult patients with grade 2-3 glioma ...
Hanna Ek, Ingrid Fagerström Kristensen, Lars Stenberg, Sara Kinhult, Hunor Benedek, Simon Ek, Svend Aage Engelholm, Silke Engelholm, Per Munck af Rosenschöld   +8 more
openaire   +2 more sources

Two-photon absorption in porphycenic macrocycles: the effect of tuning the core aromatic electronic structure [PDF]

, 2012
Changing the core heteroatoms in porphycenic macrocycles can have a dramatic effect on the two-photon absorption properties via tuning of resonance enhancement between Q-band and Soret-band states.
Bergendahl, Lisa Therese, Paterson, Martin J.   +1 more
core   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

Advanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

Optimal Allocation of Proton Therapy Slots in Combined Proton-Photon Radiation Therapy

International Journal of Radiation Oncology*Biology*Physics, 2021
Proton therapy is a limited resource that is not available to all patients who may benefit from it. We investigated combined proton-photon treatments, in which some fractions are delivered with protons and the remaining fractions with photons, as an approach to maximize the benefit of limited proton therapy resources at a population level.To quantify ...
Loizeau, Nicolas, Fabiano, Silvia, Papp, Dávid, Stützer, Kristin, Jakobi, Annika, Bandurska-Luque, Anna, Troost, Esther G C, Richter, Christian, Unkelbach, Jan   +8 more
openaire   +2 more sources

Computationally Modeling Compton Scattering to Understand Radiation Therapy [PDF]

, 2012
Radiation therapy is becoming a popular method of cancer treatment due to its effectiveness and precision. Improvements in radiation therapy treatments rise from an increased understanding of the interactions between radiation and matter, where Compton ...
Nicewonger, Daniel
core   +1 more source

Genuine Multipartite Entanglement in the $3$-Photon Decay of Positronium [PDF]

, 2017
The electron-positron annihilation into two photons is a standard technology in medicine to observe e.g. metabolic processes in human bodies. A new tomograph will provide the possibility to observe not only direct $e^+ e^-$ annihilations but also the $3$
Hiesmayr, B. C., Moskal, P.
core   +3 more sources

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

Advanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim, Kyungjoo Jo, Kwanghyeon Park, Jun Hee Kim, Jong Hyeong Cho, Inhoo Choi, Sei Kwang Hahn   +6 more
wiley   +1 more source

Photon versus Proton Therapy in the Management of Head and Neck Cancer: A Systematic Review

Journal of Clinical and Diagnostic Research
Introduction: Head and Neck Cancers (HNC), particularly Head and Neck Squamous Cell Carcinoma (HNSCC), are major causes of cancer morbidity and mortality. Radiation therapy, commonly using photons, can damage surrounding healthy tissues.
S Sowmya, R Sangavi, R Amritha Sripoo
doaj   +1 more source

Radiobiological Evaluation of Three Common Clinical Radiotherapy Techniques Including Combined Photon-Electron, Tangential Beams and Electron Therapy in Left-Sided Mastectomy Patients

Advanced Biomedical Research, 2018
Background: The aim of this study was radiobiological evaluation of different radiotherapy (RT) techniques, namely, combined photon-electron, two tangential photon beams, and electron therapy which are commonly used for treatment of mastectomy patients ...
Hossein Taheri, Mohammad Bagher Tavakoli, Ali Akhavan   +2 more
doaj   +1 more source

Preliminary investigations of Monte Carlo Simulations of neutron energy and LET spectra for fast neutron therapy facilities

, 2012
No fast neutron therapy facility has been built with optimized beam quality based on a thorough understanding of the neutron spectrum and its resulting biological effectiveness.
Allison, T.K. Kroc
core   +1 more source