Search Results - "Yu, P K N"

Note: Calibration of EBT3 radiochromic film for measuring solar ultraviolet radiation by Chun, S L, Yu, P K N

“…Solar (UVA + UVB) exposure was assessed using the Gafchromic EBT3 film. The coloration change was represented by the net reflective optical density (Net ROD)…”
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Absorption spectra variations of EBT radiochromic film from radiation exposure by Butson, M J, Cheung, T, Yu, P K N

“…Gafchromic EBT radiochromic film is one of the newest radiation-induced auto-developing x-ray analysis films available for therapeutic radiation dosimetry in…”
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The accuracy of dose calculations by anisotropic analytical algorithms for stereotactic radiotherapy in nasopharyngeal carcinoma by Kan, M W K, Cheung, J Y C, Leung, L H T, Lau, B M F, Yu, P K N

“…Nasopharyngeal tumors are commonly treated with intensity-modulated radiotherapy techniques. For photon dose calculations, problems related to loss of lateral…”
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Scanning Orientation Effects on Gafchromic EBT Film Dosimetry by Butson, M J, Cheung, T, Yu, P K N

“…Gafchromic EBT film, a new high sensitivity radio-chromic film has been tested for variations in optical properties due to scanning orientation. Gafchromic EBT…”
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Dose and Absorption Spectra Response of EBT2 Gafchromic Film to High Energy X-rays by Butson, M. J., Cheung, T., Yu, P. K. N., Alnawaf, H.

“…With new advancements in radiochromic film designs and sensitivity to suit different niche applications, EBT2 is the latest offering for the megavoltage…”
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Evaluation of the Magnitude of EBT Gafchromic Film Polarization Effects by Butson, M. J., Cheung, T., Yu, P. K. N.

“…Gafchromic EBT film, has become a main dosimetric tools for quantitative evaluation of radiation doses in radiation therapy application. One aspect of…”
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Doses in human organs due to alpha, beta and gamma radiations emitted by thoron progeny in the lung by Nikezic, D., Markovic, V. M., Krstic, D., Yu, P. K. N.

“…This work consists of two parts. In the first part, the doses in the human lung per unit exposure to thoron progeny, the dose conversion factor (DCF), was…”
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Validation of blood product irradiation doses by Cheung, T, Butson, M, Yu, P K

“…Dosimetry of blood irradiation using x-ray beams on a medical linear accelerator has been studied to evaluate the accuracy of a diode detector and the delivery…”
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Energy Dependence Corrections to MOSFET Dosimetric Sensitivity by Cheung, T., Butson, M. J., Yu, P. K. N.

“…Metal Oxide Semiconductor Field Effect Transistors (MOSFET's) are dosimeters which are now frequently utilized in radiotherapy treatment applications. An…”
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Radiochromic Film for Verification of Superficial X-ray Backscatter Factors by Butson, M J, Cheung, T, Yu, P K N

“…Accurate calculation and knowledge of backscatter factors (BSF) in superficial x-ray radiotherapy is required to perform accurate absorbed dose determination…”
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Does mechanical pressure on radiochromic film affect optical absorption and dosimetry? by Yu, P K N, Butson, M, Cheung, T

“…EBT Gafchromic film, a new high sensitivity radiochromic film has been tested to evaluate if external pressure on the film can affect absorption spectra…”
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Measuring Energy Response for RTQA Radiochromic Film to Improve Quality Assurance Procedures by Butson, M. J., Cheung, T., Yu, P. K. N.

“…RTQA Gafchromic, radiochromic film is assessed for its radiation energy dependence in photon beams ranging from superficial to megavoltage energies. RTQA…”
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Blood irradiation with accelerator produced electron beams by Butson, M J, Cheung, T, Yu, P K, Stokes, M J

“…Blood and blood products are irradiated with gamma rays to reduce the risk of graft versus host disease (GVHD). A simple technique using electron beams…”
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MOSFET dosimetry in-vivo at superficial and orthovoltage x-ray energies by Cheung, T, Butson, M J, Yu, P K N

“…This note investigates in-vivo dosimetry using a Metal Oxide Semiconductor Field Effect Transistor (MOSFET) for radiotherapy treatment at superficial and…”
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Variations in skin dose using 6MV or 18MV x-ray beams by Yu, P K N, Cheung, T, Butson, M J

“…This research aimed to quantitatively evaluate the differences in percentage dose of maximum for 6MV and 18MV x-ray beams within the first 1 cm of…”
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Variations in 6MV x-ray radiotherapy build-up dose with treatment distance by Butson, M J, Cheung, T, Yu, P K N

“…Dose in the build up region for high energy x-rays produced by a medical linear accelerator is affected by the x-ray source to patient surface distance (SSD)…”
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Polarity effect on surface dose measurement for an attix parallel plate ionisation chamber by Butson, M J, Yu, P K N, Cheung, T

“…The effects of chamber polarity have been investigated for the measurement of 6MV and 18MV x-ray surface dose using a parallel plate ionization chamber…”
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Exogenous carbon monoxide suppresses adaptive response induced in zebrafish embryos in vivo by microbeam protons by Choi, Viann Wing Yan, Ng, Candy Yuen Ping, Kobayashi, Alisa, Konishi, Teruaki, Oikawa, Masakazu, Cheng, Shuk Han, Yu, Peter Kwan Ngok

“…Dechorionated embryos of the zebrafish, Danio rerio, irradiated at 5 h post-fertilization (hpf) with 30 protons delivered to 10 separate positions each with an…”
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Response of 5 hpf zebrafish embryos to low-dose microbeam protons by Choi, Viann Wing Yan, Ng, Candy Yuen Ping, Kobayashi, Alisa, Konishi, Teruaki, Oikawa, Masakazu, Cheng, Shuk Han, Yu, Peter Kwan Ngok

“…The microbeam irradiation system (single-particle irradiation system to cell, acronym as SPICE) at the National Institute of Radiological Sciences (NIRS),…”
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Prostate Dosimetry in an Anthropomorphic Phantom by Yu, P K N, Cheung, T, Butson, M J

“…Four field prostate treatments are a standard treatment procedure in radiotherapy. Dose in the prostate and rectum region were calculated for 6MV and 18MV…”
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