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|Title:||The International Dosimetry Exchange for BNCT: A Basis for Pooling and Collectively Analyzing Clinical Results|
|Authors:||BINNS P.j.; HARLING O.k.; SEPPAELAE T.; SAVOLAINEN S.; MOSS RAYMOND; MAREK M.; REZAEI A.; KIGER III W.s.|
|Other Contributors:||RILEY K.j.|
|Citation:||Advances in Neutron Capture Therapy 2006 p. 393-396|
|Publisher:||International Society for Neutron Capture Therapy: ISNCT|
|Type:||Articles in periodicals and books|
|Abstract:||An international collaboration was organized by the Massachusetts Institute of Technology (MIT) to undertake a dosimetry exchange for the eventual purpose of combining results from various clinical centers that employ different methods for measuring and prescribing absorbed dose in the mixed radiation fields used for neutron capture therapy. Treatment plans calculated at NCT centers in the Czech Republic, Finland, The Netherlands and Sweden were normalized to corresponding measurements performed by the MIT dosimetry group in each beam. More than half of the normalizations for individual absorbed dose components (photon, fast neutron, thermal neutron and boron) determined by comparing MIT measurements to the dose specified in treatment plans from the different centers were statistically significant and ranged from 8 to 400%. Each facility had at least one dose component that would require normalization for the specified doses to be accurately compared. These normalizations establish a technical basis to begin collectively analyzing treatment plans between the European and US centers. Simple but pertinent treatment parameters such as the maximum dose to brain can now be properly compared, once the clinical data is available. This could help to more precisely and quickly determine various dose-response relationships as for example those related to adverse events. Future efforts to determine dose normalizations at other centers performing human studies as well as more sophisticated analyses using combined data from several centers should be guided by clearly defined clinical objectives with active participation from clinical BNCT experts.|
|JRC Directorate:||Energy, Transport and Climate|
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