Výsledky vyhledávání

Akademický článek

Enhancement of reactive oxygen species production by ultra-short electron pulses

Autor: J. Tye, O. Solgaard, R. J. England, J. V. Trapp, A. Fielding, C. P. Brown

Publikováno v: Royal Society Open Science, Vol 11, Iss 11 (2024)

The development of laser-driven accelerators-on-chip has provided an opportunity to miniaturize devices for electron radiotherapy delivery. Laser-driven accelerators produce highly time-compressed electron pulses, on the 100 fs to 1 ps scale. This de

Externí odkaz: https://doaj.org/article/f68fe7432fcf4c0eae6d02270782c4dd

Zobrazit plný text záznamu

Patient-specific quality assurance on a Varian Halcyon linear accelerator using a PTW Octavius 4D device

Autor: T, Aland, T, Jarema, J V, Trapp, T, Kairn

Publikováno v: Physical and engineering sciences in medicine. 44(2)

This study investigates and validates the use of the Octavius 4D system for patient specific quality assurance on Halcyon, which is capable of rotating at 4 revolutions per minute (RPM). A commercially available PTW Octavius 4D system was used for th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::080beb3ca6e7244ab5fe3cd8d0285acb
https://pubmed.ncbi.nlm.nih.gov/33704691

Zobrazit plný text záznamu

An experimental extrapolation technique using the Gafchromic EBT3 film for relative output factor measurements in small x-ray fields

Autor: Johnny E, Morales, Martin, Butson, Scott B, Crowe, Robin, Hill, J V, Trapp

Publikováno v: Medical physics. 43(8)

An experimental extrapolation technique is presented, which can be used to determine the relative output factors for very small x-ray fields using the Gafchromic EBT3 film.Relative output factors were measured for the Brainlab SRS cones ranging in di

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::3766a9141ca1f66aaf4755b8570469a3
https://pubmed.ncbi.nlm.nih.gov/27487885

Zobrazit plný text záznamu

Technical Note: Preliminary investigations into the use of a functionalised polymer to reduce diffusion in Fricke gel dosimeters

Autor: S T, Smith, K-S, Masters, K, Hosokawa, J P, Blinco, S B, Crowe, T, Kairn, J V, Trapp

Publikováno v: Medical physics. 42(12)

A modification of the existing PVA-FX hydrogel has been made to investigate the use of a functionalised polymer in a Fricke gel dosimetry system to decrease Fe(3+) diffusion.The chelating agent, xylenol orange, was chemically bonded to the gelling ag

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::b323c4aed01d5467629a4c6d5efd6501
https://pubmed.ncbi.nlm.nih.gov/26632037

Zobrazit plný text záznamu

Dosimetry of cone-defined stereotactic radiosurgery fields with a commercial synthetic diamond detector

Autor: Johnny E, Morales, Scott B, Crowe, Robin, Hill, Nigel, Freeman, J V, Trapp

Publikováno v: Medical physics. 41(11)

Small field x-ray beam dosimetry is difficult due to lack of lateral electronic equilibrium, source occlusion, high dose gradients, and detector volume averaging. Currently, there is no single definitive detector recommended for small field dosimetry

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::ae84901f89976203dc0aa4adbc44cf2a
https://pubmed.ncbi.nlm.nih.gov/25370616

Zobrazit plný text záznamu

Design and experimental testing of air slab caps which convert commercial electron diodes into dual purpose, correction-free diodes for small field dosimetry

Autor: P H, Charles, G, Cranmer-Sargison, D I, Thwaites, T, Kairn, S B, Crowe, G, Pedrazzini, T, Aland, J, Kenny, C M, Langton, J V, Trapp

Publikováno v: Medical physics. 41(10)

Two diodes which do not require correction factors for small field relative output measurements are designed and validated using experimental methodology. This was achieved by adding an air layer above the active volume of the diode detectors, which

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::ee912ed888bf939b81246ab14eb625fa
https://pubmed.ncbi.nlm.nih.gov/25281940

Zobrazit plný text záznamu

Correcting radiation survey data to account for increased leakage during intensity modulated radiotherapy treatments

Autor: T, Kairn, S B, Crowe, J V, Trapp

Publikováno v: Medical physics. 40(11)

Intensity modulated radiotherapy (IMRT) treatments require more beam-on time and produce more linac head leakage to deliver similar doses to conventional, unmodulated, radiotherapy treatments. It is necessary to take this increased leakage into accou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::4ec44ae0790d315a5ce46da9598997ad
https://pubmed.ncbi.nlm.nih.gov/24320416

Zobrazit plný text záznamu

Improved image quality for X-ray CT imaging of gel dosimeters

Autor: M B, Kakakhel, T, Kairn, J, Kenny, J V, Trapp

Publikováno v: Medical physics. 38(9)

This study provides a simple method for improving precision of X-ray computed tomography (CT) scans of irradiated polymer gel dosimetry. The noise affecting CT scans of irradiated gels has been an impediment to the use of clinical CT scanners for gel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::4a0487539af4973a23a83b48cc3a4e67
https://pubmed.ncbi.nlm.nih.gov/21978058

Zobrazit plný text záznamu

Modeling a complex micro-multileaf collimator using the standard BEAMnrc distribution

Autor: T, Kairn, J, Kenny, S B, Crowe, A L, Fielding, R D, Franich, P N, Johnston, R T, Knight, C M, Langton, D, Schlect, J V, Trapp

Publikováno v: Medical physics. 37(4)

The component modules in the standard BEAMnrc istribution may appear to be insufficient to model micro-multileaf collimators that have trifaceted leaf ends and complex leaf profiles. This note indicates, however, that accurate Monte Carlo simulations

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::313e7a26986b24b4bb62fa426a577fe8
https://pubmed.ncbi.nlm.nih.gov/20443498

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání