Results 91 to 100 of about 1,800,736 (210)

Experimentally derived beam quality correction factors for PPC05 and razor nano ionization chambers in proton scanned beams based on graphite calorimetry

open access: yesJournal of Applied Clinical Medical Physics, Volume 27, Issue 10, October 2026.
Abstract Background Ionization chamber based reference dosimetry of proton beam requires the use of beam quality correction factors which are obtained experimentally or by Monte Carlo simulation and are available to users in codes of practice and other publications.
Nicolás Gómez‐Fernández   +7 more
wiley   +1 more source

Bamboo‐Slip‐Inspired Conformal Reconfigurable Metasurfaces

open access: yesAdvanced Science, Volume 13, Issue 58, 19 October 2026.
Bamboo‐slip‐inspired conformal reconfigurable metasurface system. The structure is mainly composed of three parts, which are conformal metasurface, pattern reconfigurable antenna, and control components (such as Field Programmable Gate Array (FPGA)). Conformal metasurfaces draw inspiration from the design of ancient Chinese bamboo slips.
Qifan Li   +9 more
wiley   +1 more source

Proton beam therapy in paediatric radiation oncology: Defining the limitations, uncertainties and optimisation of treatment plans

open access: yesEJC Paediatric Oncology
Proton Beam Therapy (PBT) is an increasingly utilised modality for treating tumours by utilising the physical properties of accelerated proton beams. This review explores the development of PBT, its dosimetric advantages over conventional x-ray-based ...
C.S.M. Gillies   +8 more
doaj   +1 more source

Development of Optical Fiber Based Measurement System for the Verification of Entrance Dose Map in Pencil Beam Scanning Proton Beam

open access: yesSensors, 2018
This study describes the development of a beam monitoring system for the verification of entrance dose map in pencil beam scanning (PBS) proton therapy based on fiber optic radiation sensors (FORS) and the validation of this system through a feasibility ...
Jaeman Son   +6 more
doaj   +1 more source

High‐Performance Noble‐Metal‐Free Perovskite Solar Cells Enabled by MoOX/Cr/Al Multilayer Electrodes

open access: yesAdvanced Energy Materials, Volume 16, Issue 39, 21 October 2026.
Cost‐effective perovskite solar cells (PSCs) are developed using a noble‐metal‐free MoOX/Cr/Al multilayer electrode. The devices achieve a power conversion efficiency (PCE) of 25.6%, competitive with that of Au‐based devices (26.3%), and a 25.5 cm2 mini‐module shows 21.3% PCE.
Wooyeon Kim   +7 more
wiley   +1 more source

Effect of asymmetric lateral beam spread of a pencil beam and oscillation of spot position on fluence distribution for particle pencil beam scanning

open access: yes, 2015
A pencil beam scanning system for carbon ion radiotherapy has operated at National Institute of Radiological Sciences (NIRS) in Japan since 2011. The pencil beam scanning system makes conformal dose distribution to a target by superposition of a pencil ...
705069   +23 more
core  

Validation of Cardiorespiratory‐Gated Proton Beam Delivery for Stereotactic Arrhythmia Radioablation

open access: yesJournal of Cardiovascular Electrophysiology, Volume 37, Issue 10, Page 2375-2384, October 2026.
Stereotactic arrhythmia radioablation (STAR) with scanned proton beams was performed in a porcine model targeting the left ventricular free wall (A). Dual gating synchronized proton delivery with both respiratory and cardiac motion was compared to single gating using only respiratory motion (B).
Jagdip Kang   +17 more
wiley   +1 more source

Characterization of the dose distribution in the halo region of a clinical proton pencil beam using emulsion film detectors [PDF]

open access: yes, 2015
Proton therapy is a high precision technique in cancer radiation therapy which allows irradiating the tumor with minimal damage to the surrounding healthy tissues. Pencil beam scanning is the most advanced dose distribution technique and it is based on a
Braccini, S.   +13 more
core   +1 more source

Modeling of beam customization devices in the pencil-beam splitting algorithm for heavy charged particle radiotherapy [PDF]

open access: yes, 2011
A broad-beam-delivery system for radiotherapy with protons or ions often employs multiple collimators and a range-compensating filter, which offer complex and potentially useful beam customization.
Kanematsu, Nobuyuki   +4 more
core   +1 more source

Cardio-respiratory-gated proton pencil beam scanning for cardiac ablation: workflow and end-to-end validation

open access: yesFrontiers in Oncology
BackgroundStereotactic Arrhythmia Radiotherapy (STAR) offers a non-invasive alternative for ventricular tachycardia ablation, yet motion management remains a critical challenge. While respiratory gating is established, cardiac gating requires a dedicated
Nicolas Depauw   +21 more
doaj   +1 more source

Home - About - Disclaimer - Privacy