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R A S Thomas
R A S Thomas
Science Area Leader, Principal Research & Clinical Scientist, National Physical Laboratory
Verified email at npl.co.uk
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Year
Radiotherapy dosimetry audit: three decades of improving standards and accuracy in UK clinical practice and trials
CH Clark, EGA Aird, S Bolton, EA Miles, A Nisbet, JAD Snaith, ...
The British journal of radiology 88 (1055), 20150251, 2015
822015
A small-body portable graphite calorimeter for dosimetry in low-energy clinical proton beams
H Palmans, R Thomas, M Simon, S Duane, A Kacperek, A DuSautoy, ...
Physics in Medicine & Biology 49 (16), 3737, 2004
812004
IPEM topical report 1: guidance on implementing flattening filter free (FFF) radiotherapy
G Budgell, K Brown, J Cashmore, S Duane, J Frame, M Hardy, D Paynter, ...
Physics in Medicine & Biology 61 (23), 8360, 2016
722016
A multi-institutional dosimetry audit of rotational intensity-modulated radiotherapy
CH Clark, M Hussein, Y Tsang, R Thomas, D Wilkinson, G Bass, J Snaith, ...
Radiotherapy and Oncology 113 (2), 272-278, 2014
722014
Ion recombination for ionization chamber dosimetry in a helical tomotherapy unit
H Palmans, RAS Thomas, S Duane, E Sterpin, S Vynckier
Medical physics 37 (6Part1), 2876-2889, 2010
552010
Ion recombination correction in the Clatterbridge Centre of Oncology clinical proton beam
H Palmans, R Thomas, A Kacperek
Physics in Medicine & Biology 51 (4), 903, 2006
532006
A methodology for dosimetry audit of rotational radiotherapy using a commercial detector array
M Hussein, Y Tsang, RAS Thomas, C Gouldstone, D Maughan, ...
Radiotherapy and Oncology 108 (1), 78-85, 2013
512013
An investigation of the thermoluminescence of Ge-doped SiO2 optical fibres for application in interface radiation dosimetry
ATA Rahman, RP Hugtenburg, SFA Sani, AIM Alalawi, F Issa, R Thomas, ...
Applied Radiation and Isotopes 70 (7), 1436-1441, 2012
372012
Adaptation and validation of a commercial head phantom for cranial radiosurgery dosimetry end-to-end audit
A Dimitriadis, AL Palmer, RAS Thomas, A Nisbet, CH Clark
The British Journal of Radiology 90 (1074), 20170053, 2017
302017
Evaluation of the water-equivalence of plastic materials in low-and high-energy clinical proton beams
A Lourenço, D Shipley, N Wellock, R Thomas, H Bouchard, A Kacperek, ...
Physics in Medicine & Biology 62 (10), 3883, 2017
302017
The characterization of the Advanced Markus ionization chamber for use in reference electron dosimetry in the UK
J Pearce, R Thomas, A DuSautoy
Physics in Medicine & Biology 51 (3), 473, 2006
292006
Evaluation of factors to convert absorbed dose calibrations from graphite to water for the NPL high-energy photon calibration service
RF Nutbrown, S Duane, DR Shipley, RAS Thomas
Physics in Medicine & Biology 47 (3), 441, 2002
292002
Fluence correction factors for graphite calorimetry in a low-energy clinical proton beam: I. Analytical and Monte Carlo simulations
H Palmans, L Al-Sulaiti, P Andreo, D Shipley, A Lühr, N Bassler, ...
Physics in Medicine & Biology 58 (10), 3481, 2013
272013
Radiotherapy reference dose audit in the United Kingdom by the National Physical Laboratory: 20 years of consistency and improvements
RAS Thomas, MA Bolt, G Bass, R Nutbrown, T Chen, A Nisbet, CH Clark
Physics and Imaging in Radiation Oncology 3, 21-27, 2017
252017
Reference dosimetry on TomoTherapy: an addendum to the 1990 UK MV dosimetry code of practice
SJ Thomas, MM Aspradakis, JP Byrne, G Chalmers, S Duane, J Rogers, ...
Physics in Medicine & Biology 59 (6), 1339, 2014
252014
Experimental and Monte Carlo studies of fluence corrections for graphite calorimetry in low‐and high‐energy clinical proton beams
A Lourenço, R Thomas, H Bouchard, A Kacperek, V Vondracek, G Royle, ...
Medical Physics 43 (7), 4122-4132, 2016
222016
Ion recombination correction in carbon ion beams
S Rossomme, J Hopfgartner, ND Lee, A Delor, RAS Thomas, F Romano, ...
Medical physics 43 (7), 4198-4208, 2016
202016
Water equivalence of various materials for clinical proton dosimetry by experiment and Monte Carlo simulation
L Al-Sulaiti, D Shipley, R Thomas, A Kacperek, P Regan, H Palmans
Nuclear Instruments and Methods in Physics Research Section A: Accelerators …, 2010
202010
Absolute dosimetry for FLASH proton pencil beam scanning radiotherapy
A Lourenço, A Subiel, N Lee, S Flynn, J Cotterill, D Shipley, F Romano, ...
Scientific Reports 13 (1), 2054, 2023
192023
Challenges in dosimetry of particle beams with ultra-high pulse dose rates
F Romano, A Subiel, M McManus, ND Lee, H Palmans, R Thomas, ...
Journal of Physics: Conference Series 1662 (1), 012028, 2020
182020
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