Current interests

Julia Snaith is leading research at NPL on the development of dosimetry using an electronic portal imaging device (EPID). She works closely with medical physicists through her work on linac commissioning and radiotherapy department kV, MV and electron beam audits, as well as representing NPL on the national rotational radiotherapy audit. Julia is also interested in calorimetry and the dissemination of the UK absorbed dose primary standard graphite calorimeter to the clinic, through both her role as service manager for the photon calibration service and operation of the primary standard graphite calorimeter.

Biography

Julia obtained her MSci (Hons) in Physics from the University of Birmingham (UK) in 2002, during which time she was awarded the Nolan Merrill and Moreton prizes for academic performance. She went on to pursue a career in Radiation Dosimetry at the National Physical Laboratory, receiving a MSc in Radiation Physics with Medical Applications from University College London in 2004. Her MSc thesis was on the characterisation of two new chambers for electron beam dosimetry. Julia is currently working towards her PhD in EPID Dosimetry through collaboration with MAASTRO Clinic, Maastricht, Netherlands.

Selected publications

• Transfer of the UK absorbed dose primary standard for photon beams from the research linac to the clinical linac at NPL
  J. A. D. Pearce, D. R. Shipley and S. Duane
  Metrologia 48, pages 365-374 (2011)
• Revised correction factor for the UK national primary standard for air kerma for ¹³⁷Cs and ⁶⁰Co gamma-rays
  J. Pearce, G. Bass, S. Duane, R. Nutbrown and D. Shipley
  Metrologia 46, L26 (2009)
• The calibration of parallel-plate electron ionisation chambers at NPL for use with the IPEM 2003 code of practice: summary data
  G. A. Bass, R. A. S. Thomas, J. A. D. Pearce
  Phys. Med. Biol. 54, N115-N124 (2009)
• The characterization of the Advanced Markus ionisation chamber for use in reference electron dosimetry in the UK
  J. Pearce, R. Thomas, A. DuSautoy
  Phys. Med. Biol. 51, pages 473-483 (2006)
• Current issues in electron dosimetry
  A. DuSautoy, M. McEwen, T. Jordan, A. Nahum, A. Nisbet, J. Pearce, G. Pitchford, D. Thwaites
  Radiotherapy and Oncology 68 S11-S11 (2003)

Invited presentations

• EPID calibration for dosimetry: Progress at NPL and future plans
  J. A. D. Snaith
  BIR meeting: In-Vivo Dosimetry and Dose Guided Radiotherapy (2011)

Contact details

E-mail: julia.snaith@npl.co.uk
Tel: 020 8943 6337