 French Metrology journal
Content of the last issue (16, 2008-4)
Note : Even if being written in French, each of these articles includes an English abstract
RFM n°16 - Volume 2008-4 |
 Metrology Events
March 16-18, 2009 LNE- France
"Watt balance technical meeting - WBTM"
March 17-18, 2009 BIPM / Sèvres - France
"JCRB meeting"
March 23-27, 2009 Anaheim - USA
"Measurement science conference"
March 24-26, 2009 - PTB / Braunschweig - Germany
"EURAMET Board of directors"
April 21-24, 2009 - Besançon - France
"European Frequency and Time Forum - International Frequency Control Symposium - EFTF -IFCS"
More events
|
 Special feature : Radiotherapy - Graphite calorimetry
Since medical exposure is by far the most common source of artificial irradiation, there is a clear need to provide specific metrological references in this field. Radiotherapy in particular requires precise control of the doses administered in "target" volumes (for tumours), which in turn depends on highly accurate characterization of the doses produced by radiation sources (accelerators, cobalt).
To meet this need, metrologists must develop primary reference standards that represent as closely as possible the dose absorbed in biological environments, in irradiation conditions that are identical to those of human exposure.
Reference standards are defined in environments close to biological tissue, for their properties of interaction with matter (similar atomic number): air, water, graphite, etc.
Medical physicists thus characterize radiation beams in terms of absorbed dose to water.
Graphite calorimetry (pdf - 829 Kb) |
All news
