SU-E-P-55: The Reaserch of Cervical Cancer Delivered with Constant Dose Rate and Gantry Speed Arc Therapy(CDR-CAS-IMAT) On Conventional Linac

2015 ◽  
Vol 42 (6Part5) ◽  
pp. 3239-3239 ◽  
Author(s):  
R Zhang ◽  
W Bai ◽  
Y Gao ◽  
Z Chi ◽  
C Gao ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Dose Rate ◽  
Arc Therapy ◽  
Constant Dose ◽  
Constant Dose Rate

scholarly journals Is volumetric modulated arc therapy with constant dose rate a valid option in radiation therapy for head and neck cancer patients?

2018 ◽  
Vol 23 (3) ◽  
pp. 175-182 ◽  
Author(s):  
Annamaria Didona ◽  
Valentina Lancellotta ◽  
Claudio Zucchetti ◽  
Bianca Moira Panizza ◽  
Alessandro Frattegiani ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Head And Neck Cancer ◽  
Head And Neck ◽  
Dose Rate ◽  
Cancer Patients ◽  
Neck Cancer ◽  
Volumetric Modulated Arc Therapy ◽  
Arc Therapy ◽  
Constant Dose ◽  
Constant Dose Rate

scholarly journals Inverse planned constant dose rate volumetric modulated arc therapy (VMAT) as an efficient alternative to five-field intensity modulated radiation therapy (IMRT) for prostate

2013 ◽  
Vol 13 (1) ◽  
pp. 68-78 ◽  
Author(s):  
Conor K. McGarry ◽  
Stephen J. McMahon ◽  
David Craft ◽  
Joe M. O'Sullivan ◽  
Kevin M. Prise ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Dose Rate ◽  
Field Intensity ◽  
Volumetric Modulated Arc Therapy ◽  
Intensity Modulated Radiation Therapy ◽  
Intensity Modulated ◽  
Arc Therapy ◽  
Constant Dose ◽  
Pareto Fronts ◽  
Constant Dose Rate

AbstractPurposeThe aim of this work was to determine if volumetric modulated arc therapy (VMAT) plans, created for constant dose-rate (cdrVMAT) delivery are a viable alternative to step and shoot five-field intensity modulated radiation therapy (IMRT).Materials and methodsThe cdrVMAT plans, inverse planned on a treatment planning system with no solution to account for couch top or rails, were created for delivery on a linear accelerator with no variable dose rate control system. A series of five-field IMRT and cdrVMAT plans were created using dual partial arcs (gantry rotating between 260° and 100°) with 4° control points for ten prostate patients with the average rectal constraint incrementally increased. Pareto fronts were compared for the planning target volume homogeneity and average rectal dose between the two techniques for each patient. Also investigated were tumour control probability and normal tissue complication probability values for each technique. The delivery parameters [monitor units (MU) and time] and delivery accuracy of the IMRT and VMAT plans were also compared.ResultsPareto fronts showed that the dual partial arc plans were superior to the five-field IMRT plans, particularly for the clinically acceptable plans where average rectal doses were less for rotational plans (p = 0·009) with no statistical difference in target homogeneity. The cdrVMAT plans had significantly more MU (p = 0·005) but the average delivery time was significantly less than the IMRT plans by 42%. All clinically acceptable cdrVMAT plans were accurate in their delivery (gamma 99·2 ± 1·1%, 3%3 mm criteria).ConclusionsAccurate delivery of dual partial arc cdrVMAT avoiding the couch top and rails has been demonstrated.

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