Dosimetric verification on intensity modulated radiotherapy in Jiangsu province / 中华放射医学与防护杂志
Chinese Journal of Radiological Medicine and Protection
;
(12): 121-124, 2018.
Article
in Chinese
| WPRIM
| ID: wpr-708026
ABSTRACT
Objective To explore the dosimetric verification method for absorbed dose and twodimensional dose distribution generated through multi-leaf collimator in radiotherapy.Methods A total of 8 medical accelerators were selected in Jiangsu province.Under 6 MV X-rays with a 5 cm × 5 cm field,the thermoluminescent dosimeter (TLD) and EBT3 radiochromic film (RCF) were used to audit the values calculated by treatment planning system (TPS).RCF was used to verify two-dimensional dose distribution under the 6 MV MLC beams for intensity modulated radiation therapy (IMRT).Results The relative dose deviation was from-1.4% to 6.8% for TLD and from-1.8% to 7.8% for RCF,with 7 accelerators meeting with the IAEA deviation requirement of ± 5%.The passing rates of two-dimensional dose distribution were between 73.7% and 97.0%,with 7 accelerators greater than 90%.Conclusions TLD and RCF are feasible and suitable for large-scale verification of IMRT TPS absorbed dose and twodimensional dose distribution.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Radiological Medicine and Protection
Year:
2018
Type:
Article
Similar
MEDLINE
...
LILACS
LIS