Published October 2011 | Version v1
Journal article Metadata-only

Optimization of MOSFET calibration for in vivo dosimetry in radiosurgery: reduction of measurement uncertainties in pre-clinical conditions

Creators

  • 1. UMR 825 'imagerie cerebrale et handicaps neurologiques', Inserm, Toulouse (France)
  • 2. Unite de radiophysique et de radioprotection, CHU de Toulouse, Toulouse (France)
  • 3. Best medical Canada, Ottawa (Canada)
  • 4. Centre de radiochirurgie stereotaxique, CHU Rangueil, Toulouse (France)
  • 5. Groupe Oncorad Garonne, Montauban (France)

Description

The objective of this study is to assess the conventional formulas of equivalent square for fields with irregular geometry, by transposing the optimized calibration method which has been previously developed, to micro-MOSFET. The study has been performed on a 6 MV Novalis apparatus equipped with micro-multi-blades collimators (BrainLab). The average dose bias reaches 2.66 per cent for all field sizes. Therefore, it appears that the joint use of the square inverse of distances and of conventional formulas of equivalent square results in an acceptable in vivo dosimetry precision. Short communication

Availability note (English)

Available from doi: http://dx.doi.org/10.1016/j.canrad.2011.07.160

Additional details

Additional titles

Original title (French)
Optimisation de la calibration de MOSFET pour la dosimetrie in vivo en radiochirurgie: reduction des incertitudes de mesure en conditions precliniques

Identifiers

DOI
10.1016/j.canrad.2011.07.160;

Publishing Information

Journal Title
Cancer Radiotherapie
Journal Volume
15
Journal Issue
6-7
Journal Page Range
p. 617-618
ISSN
1278-3218
CODEN
CARAFC

Conference

Title
22. national congress of the French society of oncological radiotherapy (SFRO)
Original Conference Title
22. congres national de la Societe Francaise de Radiotherapie Oncologique (SFRO)
Dates
5-7 Oct 2011
Place
Paris (France)

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
43041620
Subject category
S62: RADIOLOGY AND NUCLEAR MEDICINE; S97: MATHEMATICAL METHODS AND COMPUTING;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ACCURACY; CALCULATION METHODS; CALIBRATION; COLLIMATORS; DATA COVARIANCES; DOSIMETRY; IN VIVO; MOSFET; NEOPLASMS; OPTIMIZATION; RADIATION DOSES; RADIATION MONITORING; RADIOTHERAPY
Descriptors DEC
DISEASES; DOSES; FIELD EFFECT TRANSISTORS; MEDICINE; MONITORING; MOS TRANSISTORS; NUCLEAR MEDICINE; RADIOLOGY; SEMICONDUCTOR DEVICES; THERAPY; TRANSISTORS