Dosimetric verification of flattening filter free model based on TrueBeam accelerator using ArcCheck system / 中南大学学报(医学版)
Journal of Central South University(Medical Sciences)
;
(12): 864-868, 2018.
Article
in Chinese
| WPRIM
| ID: wpr-813183
ABSTRACT
To study the feasibility of ArcCheck verification system in dosimetric verification for stereotactic radiotherapy (SRT) the stereotactic radiotherapy (SRT) with flattening filter free (FFF) model.
Methods:
A total of 76 cases under SRT treatment plans were introduced into ArcCheck phantom and recalculated. Threshold criteria was set as (3%, 3 mm, 10%) or (2%, 2 mm, 10%). The calculated dose distribution and the measured dose distribution of ArcCheck phantom were compared by means of distance to agree (DTA) and Gamma analysis method respectively.Results:
Based on the threshold criteria (3%, 3 mm, 10%), the relative and absolute mean pass rates of SRT treatment plans by DTA and Gamma analysis were greater than 95%. Based on the threshold criteria (2%, 2 mm, 10%), the relative and absolute mean pass rates of SRT treatment plan by DTA and Gamma analysis were about 90%. The dose pass rate of Gamma analysis method was slightly higher than that of DTA analysis method (P<0.001).Conclusion:
The ArcCheck verification system is a rapid and accurate method for SRT dose verification, and discrepancies are found in different analysis methods.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Radiotherapy Dosage
/
Radiotherapy Planning, Computer-Assisted
/
Feasibility Studies
/
Radiosurgery
/
Phantoms, Imaging
/
Radiotherapy, Intensity-Modulated
/
Methods
Type of study:
Prognostic study
Limits:
Humans
Language:
Chinese
Journal:
Journal of Central South University(Medical Sciences)
Year:
2018
Type:
Article
Similar
MEDLINE
...
LILACS
LIS