Results 101 to 110 of about 2,542,698 (234)

4D dose calculation and delivery with interplay effects between respiratory motion and uniform scanning proton beam

open access: yes, 2011
Proton radiotherapy has advantages to deliver accurate high conformal radiation dose to the tumor while sparing the surrounding healthy tissue and critical structures. However, the treatment effectiveness is degraded greatly due to patient free breathing
Zhao, Qingya
core  

Comparisons of results with several proton penetration codes [PDF]

open access: yes, 1967
Proton penetration codes for dose calculation through aluminum and iron ...
Alsmiller, R. G., Jr., Scott, W. W.
core  

Charge‐Reversed Lipid Nanoparticles Enable Encapsulation of Pt2L4 Nanocages for In vivo Anti‐Cancer Treatment

open access: yesAdvanced Materials, EarlyView.
Charge‐reversed lipid nanoparticles (revLNPs) enable efficient encapsulation and delivery of cationic Pt2L4 nanocages. Encapsulation preserves potent anticancer activity while improving circulation, reducing vascular leakage, and promoting favorable biodistribution in vivo.
Renzo A. Knol   +16 more
wiley   +1 more source

Proton treatment-plan dose verification with a DPM-based Monte Carlo engine

open access: yesFrontiers in Oncology
IntroductionIndependent proton dose verification requires a calculation pathway that is accurate enough to identify clinically relevant discrepancies while remaining practical to commission and operate.
Aimee L. McNamara   +2 more
doaj   +1 more source

Extended collimator model for pencil-beam dose calculation in proton radiotherapy

open access: yesPhysics in Medicine and Biology, 2006
We have developed a simple collimator model to improve the accuracy of penumbra behaviour in pencil-beam dose calculation for proton radiotherapy. In this model, transmission of particles through a three-dimensionally extended opening of a collimator is calculated in conjunction with phase-space distribution of the particles.
Nobuyuki, Kanematsu   +5 more
openaire   +2 more sources

Dose Distribution Outside the Target Volume for 170-Mev Proton Beam

open access: yes, 2014
Dose delivered outside the proton field during radiotherapy can potentially lead to secondary cancer development. Measurements with a 170-MeV proton beam were performed with passive detectors (track etched detectors and thermoluminescence dose-meters) in
Sihver, Lembit   +16 more
core   +1 more source

Pencil beam dose calculation for proton therapy on graphics processing units [PDF]

open access: yes, 2016
Radiotherapy delivered using scanned beams of protons enables greater conformity between the dose distribution and the tumour than conventional radiotherapy using X rays.

core   +2 more sources

Helicity‐Defined Analog Conductance States in Chiral Perovskite Synapses

open access: yesAdvanced Materials, EarlyView.
Chiral perovskite synapses convert the handedness of circularly polarized light into persistent analog memory during electrical programming. An optimized n = 3 structure combines strong helicity selectivity with low read noise, enabling 72 distinct conductance levels.
Min Jong Lee   +16 more
wiley   +1 more source

Tissue substitutes for particulate radiations and their use in radiation dosimetry and radiotherapy [PDF]

open access: yes, 1978
PhDMost of the tissue substitute materials currently used inclinical radiation dosimetry are designed to simulate muscle or bone when irradiated with photons A few materials have been developed for neutron dosimetry, but substitutes speci fically ...
Constantinou, Christodoulos
core   +2 more sources

Layered Spin‐Crossover Metal‐Organic Frameworks for Light‐Induced Control of Two‐Dimensional Quantum Materials

open access: yesAdvanced Materials, EarlyView.
Spin‐crossover metal‐organic frameworks (SCO‐MOFs) provide a route to control the electronic and magnetic properties of two‐dimensional quantum materials. By integrating a layered SCO‐MOFs with graphene, CrSBr, and NbSe2 nanodevices, thermally and light induced spin transitions induce strain that reversibly modulates charge transport, magnetic memory ...
Carla Boix‐Constant   +4 more
wiley   +1 more source

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