Dosimetric comparison of stereotactic body radiation therapy plans for spine metastasis using flattening filter free and flattening filter modes / 中华放射医学与防护杂志
Chinese Journal of Radiological Medicine and Protection
;
(12): 63-66, 2016.
Article
in Chinese
| WPRIM
| ID: wpr-488558
ABSTRACT
Objective To compare the dosimetric difference of stereotactic body radiation therapy (SBRT) plans for spine metastasis using 6 MV X-ray flattening filter free (FFF) and flattening filter (FF) modes.Methods A total of nine previously treated patients with a total of twelve spine metastasis were retrospectively included and replanned using FFF-SBRT and FF-SBRT, respectively.The dose-volume histograms (DVH), target conformity index (CI), monitor unites (MUs) and treatment time of target volume, organs at risk and normal tissues were compared between the plans.Results Both FFF-SBRT and FF-SBRT met the clinical objectives.Dose distribution of target volume, organs at risk and normal tissues were similar.MUs of the FFF-SBRT were significantly higher than that of FF-SBRT (t =-5.20, P <0.0l), while the treatment time was almost half of the latter (t =17.27, P < 0.01).Conclusions Two plan modes are both clinically acceptable.FFF-SBRT plans are delivered in less time and with better efficiency.Trial registration Chinese clinical trial registry, ChiCTR-TRC-14004281.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Radiological Medicine and Protection
Year:
2016
Type:
Article
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