Results 21 to 30 of about 348,522 (167)

Applications of various range shifters for proton pencil beam scanning radiotherapy

open access: yesRadiation Oncology, 2021
Background A range pull-back device, such as a machine-related range shifter (MRS) or a universal patient-related range shifter (UPRS), is needed in pencil beam scanning technique to treat shallow tumors.
Haibo Lin   +11 more
doaj   +1 more source

Weak capture of protons by protons [PDF]

open access: yesPhysical Review C, 1998
17 pages RevTeX (twocolumn), 5 postscript ...
Robert B. Wiringa   +13 more
openaire   +4 more sources

Registration error of the liver CT using deformable image registration of MIM Maestro and Velocity AI

open access: yesBMC Medical Imaging, 2017
Background Understanding the irradiated area and dose correctly is important for the reirradiation of organs that deform after irradiation, such as the liver.
Nobuyoshi Fukumitsu   +11 more
doaj   +1 more source

Cosmic protons [PDF]

open access: yesPhysics Letters B, 2000
The primary proton spectrum in the kinetic energy range 0.2 to 200 GeV was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS–91 at an altitude of 380 km. The complete data set combining three shuttle attitudes and including all known systematic effects is ...
Alcaraz, J   +199 more
openaire   +5 more sources

Feasibility of linac-based fractionated stereotactic radiotherapy and stereotactic radiosurgery for patients with up to ten brain metastases

open access: yesRadiation Oncology, 2022
Background Linac-based fractionated stereotactic radiotherapy (fSRT) and stereotactic radiosurgery (SRS) are increasingly being used to manage patients with multiple metastases.
Masanori Hirata   +15 more
doaj   +1 more source

Exploring the experience of meaning-centered group psychotherapy among Chinese cancer patients during active treatment: a descriptive qualitative study

open access: yesFrontiers in Psychiatry, 2023
ObjectiveMeaninglessness poses a significant psychological challenge for cancer patients, negatively affecting their quality of life and increasing the risk of suicide.
Shuman Wang   +17 more
doaj   +1 more source

Technical assessment of the NDI Polaris Vega optical tracking system

open access: yesRadiation Oncology, 2021
The Polaris product line from Northern Digital Inc. is well known for accurate optical tracking measurements in research and medical environments. The Spectra position sensor, to date often found in image guided radiotherapy suites, has however reached ...
Giovanni Fattori   +3 more
doaj   +1 more source

Monitoring of breathing motion in image-guided PBS proton therapy: comparative analysis of optical and electromagnetic technologies

open access: yesRadiation Oncology, 2017
Background Motion monitoring is essential when treating non-static tumours with pencil beam scanned protons. 4D medical imaging typically relies on the detected body surface displacement, considered as a surrogate of the patient's anatomical changes, a ...
Giovanni Fattori   +6 more
doaj   +1 more source

Deep learning method for prediction of patient-specific dose distribution in breast cancer

open access: yesRadiation Oncology, 2021
Background Patient-specific dose prediction improves the efficiency and quality of radiation treatment planning and reduces the time required to find the optimal plan. In this study, a patient-specific dose prediction model was developed for a left-sided
Sang Hee Ahn   +10 more
doaj   +1 more source

Proton-air and proton-proton cross sections [PDF]

open access: yesEPJ Web of Conferences, 2013
Different attempts to measure hadronic cross sections with cosmic ray data are reviewed. The major results are compared to each other and the differences in the corresponding analyses are discussed. Besides some important differences, it is crucial to see that all analyses are based on the same fundamental relation of longitudinal air shower ...
openaire   +4 more sources

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