SU-D-BRB-03: Planning Margin Implications for Multiple-Target, Single-Isocenter VMAT SRS Based On Image Guidance Tolerances

2015 ◽  
Vol 42 (6) ◽  
pp. 3211-3211
Author(s):  
D Harrington ◽  
E Clouser
Keyword(s):  
Image Guidance ◽  
Multiple Target ◽  
Single Isocenter

scholarly journals [OA191] Influence of the degree of the geometric uncertainty on the quality of single isocenter VMAT multiple target treatments

2018 ◽  
Vol 52 ◽  
pp. 73-74
Author(s):  
Georgia Prentou ◽  
Pantelis Karaiskos ◽  
Panagiotis Papagiannis ◽  
Evaggelos Pantelis ◽  
Efi Koutsouveli
Keyword(s):  
Multiple Target ◽  
Geometric Uncertainty ◽  
Single Isocenter

scholarly journals A hybrid volumetric dose verification method for single-isocenter multiple-target cranial SRS

2018 ◽  
Vol 19 (5) ◽  
pp. 651-658 ◽  
Author(s):  
Saeed Ahmed ◽  
Jeff Kapatoes ◽  
Geoffrey Zhang ◽  
Eduardo G. Moros ◽  
Vladimir Feygelman
Keyword(s):  
Dose Verification ◽  
Multiple Target ◽  
Verification Method ◽  
Single Isocenter

scholarly journals Systematic end-to-end testing of multiple target treatments using the modular RUBY phantom

2021 ◽  
Author(s):  
Leonie Brodbek ◽  
Jana Kretschmer ◽  
Katrin Büsing ◽  
Hui Khee Looe ◽  
Bjoern Poppe ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Monte Carlo Algorithm ◽  
Planning System ◽  
Treatment Planning System ◽  
Detector Response ◽  
Multiple Target ◽  
Collapsed Cone ◽  
End To End ◽  
Dose Measurements ◽  
Single Isocenter

Abstract The RUBY head phantom in combination with the System QA insert MultiMet can be used for simultaneous point dose measurements at an isocentric and two off-axis positions. This study investigates the suitability of the system for systematic integral end-to-end testing of single-isocenter multiple target stereotactic treatments. Several volumetric modulated arc therapy plans were optimized on a planning CT of the phantom positioned in a stereotactic mask on the stereotactic treatment board. The plans were created for three artificial spherical target volumes centred around the measurement positions in the MultiMet insert. Target diameters between 5 and 40 mm were investigated. Coplanar and non-coplanar plans were optimized using the collapsed cone algorithm of the Oncentra Masterplan treatment planning system and recalculated with the Monte Carlo algorithm of the Monaco treatment planning system. Measurements were performed at an Elekta Synergy linear accelerator. The head phantom was positioned according to clinical workflow comprising immobilization and CBCT imaging. Simultaneous point dose measurements at all target positions were performed with three PinPoint 3D chambers (type 31022) as well as three microDiamond (type 60019) detectors and compared to the treatment planning system calculations. Furthermore, the angular dependence of the detector response was investigated to estimate the associated impact on the measured point dose values. Considering all investigated plans, PTV diameters and positions, the point doses calculated with the Monaco treatment planning system and the microDiamond measurements differed within 3.5%, whereas the PinPoint 3D showed differences of up to 6.9%. Point dose differences determined in comparison to the Oncentra Masterplan dose calculations were larger. The RUBY system was shown to be suitable for end-to-end testing of complex treatment scenarios such as single-isocenter multiple target plans.

SU-E-T-561: Small Target Dose Calculation Accuracy for Multiple-Target Single-Isocenter VMAT

2013 ◽  
Vol 40 (6Part19) ◽  
pp. 334-334
Author(s):  
R Popple ◽  
X Wu ◽  
Y Yuan ◽  
R Cardan ◽  
J Duan ◽  
...  
Keyword(s):  
Dose Calculation ◽  
Small Target ◽  
Multiple Target ◽  
Target Dose ◽  
Single Isocenter

scholarly journals Single-Isocenter Multiple-Target Stereotactic Radiosurgery: Risk of Compromised Coverage

2015 ◽  
Vol 93 (3) ◽  
pp. 540-546 ◽  
Author(s):  
Justin Roper ◽  
Vorakarn Chanyavanich ◽  
Gregory Betzel ◽  
Jeffrey Switchenko ◽  
Anees Dhabaan
Keyword(s):  
Stereotactic Radiosurgery ◽  
Multiple Target ◽  
Single Isocenter

scholarly journals Validation of virtual water phantom software for pre‐treatment verification of single‐isocenter multiple‐target stereotactic radiosurgery

2021 ◽  
Author(s):  
Juan‐Francisco Calvo‐Ortega ◽  
Peter B. Greer ◽  
Marcelino Hermida‐López ◽  
Sandra Moragues‐Femenía ◽  
Coral Laosa‐Bello ◽  
...  
Keyword(s):  
Stereotactic Radiosurgery ◽  
Virtual Water ◽  
Multiple Target ◽  
Treatment Verification ◽  
Water Phantom ◽  
Pre Treatment ◽  
Single Isocenter
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