We present a facile one-pot synthetic route for the production of palladium nanoparticles via a simple proton beam irradiation process at room temperature. The synthesis of size-controlled palladium nanostructures was realized just by changing the mean current of the proton beam and by controlling the molar concentration ratios of surfactants to Pd precursors in an aqueous phase-based solution without the addition of any harsh reductants. As the beam current was increased under the same Pd ion concentration conditions, the average diameter of the prepared Pd nanoparticles tended to be decreased. We also found that the size of the synthesized Pd nanocrystals was decreased as the molar ratio of surfactants to palladium ion was increased.
Background: Rapid planning is of tremendous value in proton pencil beam scanning (PBS) therapy in overcoming range uncertainty. However, the dose calculation of the dose influence matrix (D) in robust PBS plan optimization is time-consuming and requires substantial acceleration to enhance efficiency.
Purpose: To accelerate the D calculations in PBS therapy, we developed an AI-D engine integrated into our in-house treatment planning system (TPS).
Purpose: A novel proton beam delivery method known as DynamicARC spot scanning has been introduced. The current study aims to determine whether the partial proton arc technique, in conjunction with DynamicARC pencil beam scanning (PBS), can meet clinical acceptance criteria for bilateral head and neck cancer (HNC) and provide an alternative to full proton arc and traditional intensity-modulated proton therapy (IMPT).
Method: The study retrospectively included anonymized CT datasets from ten patients with bilateral HNC, all of whom had previously received photon treatment.
Purpose: This study aims to assess the clinical outcomes of hypofractionated proton beam therapy (PBT) for extrahepatic cholangiocarcinoma (EHCC) and to investigate the optimal sequencing for combining PBT with chemotherapy.
Materials And Methods: We retrospectively analyzed fifty-nine consecutive patients with inoperable EHCC treated with PBT. The median prescribed dose of PBT was 50 GyE (range, 45-66 GyE) in 10 fractions.
Cancer and Blood Diseases Institute, Cincinnati Children's Hospital, Cincinnati, Ohio; Department of Radiation Oncology, College of Medicine, University of Cincinnati, Cincinnati, Ohio.
Purpose: To retrospectively validate the dose and dose rates delivered in XXX clinical trial fields via sub-millimeter spatial and <0.25 ms temporal resolution scintillation imaging.
Methods: An ultra-fast intensified CMOS camera (4.
Proton therapy is an advanced cancer treatment that uses precise proton beams to destroy cancer cells while minimizing damage to surrounding healthy tissues.
The study investigates the effectiveness of the Geant4 Monte Carlo simulation software, which models the interaction between proton beams and the human body for better treatment planning.
By reviewing published articles from 2002 to 2023, researchers found that Geant4 simulations are both reliable and accurate, making them useful for optimizing and assessing proton therapy systems based on real-world experimental data.
