Results 41 to 50 of about 128,967 (306)

Diamond Detectors for Radiotherapy X-Ray Small Beam Dosimetry

open access: yesFrontiers in Physics, 2021
Many new X-Ray treatment machines using small and/or non-standard radiation fields, e.g., Tomotherapy, Cyber-knife, and linear accelerators equipped with high-resolution multi-leaf collimators and on-board imaging system, have been introduced in the ...
C. Talamonti   +5 more
doaj   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

MedLinac2: a GEANT4 based software package for radiotherapy

open access: yesAnnali dell'Istituto Superiore di Sanità, 2010
Dose distribution evaluation in oncological radiotherapy treatments is an outstanding problem that requires sophisticated computing technologies to optimize the clinical results (i.e.
Barbara Caccia   +2 more
doaj   +1 more source

Monte Carlo calculation of shielding properties of newly developed heavy concretes for megavoltage photon beam spectra used in radiation therapy [PDF]

open access: yesIranian Journal of Medical Physics, 2016
Introduction: Globally, the need for radiotherapy as a part of cancer management increases every year. Thus, the shielding for megavoltage radiotherapy rooms is of great importance. Materials and Methods: In the present study, 14 types of developed high-
Rezvan Khaldari   +2 more
doaj   +1 more source

Deterministic Partial Differential Equation Model for Dose Calculation in Electron Radiotherapy

open access: yes, 2009
Treatment with high energy ionizing radiation is one of the main methods in modern cancer therapy that is in clinical use. During the last decades, two main approaches to dose calculation were used, Monte Carlo simulations and semi-empirical models based
B Dubroca   +19 more
core   +1 more source

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

open access: yesMolecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee   +8 more
wiley   +1 more source

Radiotherapy and creation of safety feeling

open access: yesنشریه پرستاری ایران, 1999
Radiotherapy is one of the most common treatments of cancer that are used alone or with the combination of other treatments. Radiotherapy are used before surgery for tumor shrinking, pain relief, wound healing or prevention of continues bleedings.
Ordoubadinia, Z
doaj  

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Design of a magnetic-modulated target-selective X-ray tube to improve the energy distribution for intraoperative radiotherapy

open access: yesNuclear Engineering and Technology
Intraoperative radiotherapy with low-energy X-rays has potential advantages of high biological effects as well as moving flexibly. In addressing tumors of varying depths, there is a pressing need for adjustable spectral ranges and high emission ...
Limin Jin   +4 more
doaj   +1 more source

Feasibility study of CdZnTe and CdZnTeSe based high energy X-ray detector using linear accelerator

open access: yesNuclear Engineering and Technology, 2023
CdZnTeSe (CZTS) has attracted attention for applications in X- and gamma-ray detectors owing to its improved properties compared to those of CdZnTe (CZT).
Beomjun Park   +5 more
doaj   +1 more source

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