Name (ID): P3Brain, P3Brain (P3Brain)
Plan or PlanSum ID: HyperArc
Structure ID | Structure Code | Patient Structure | DVH Objective | Evaluator | Variation | Priority | Met | Achieved |
4GyBrain_noPTV | BRAIN_PTV | V4Gy[cc] | 157.13 cc | |||||
12GyBrain_noPTV | BRAIN_PTV | V12Gy[cc] | 15.69 cc | |||||
21GyBrain_noPTV | BRAIN_PTV | V21Gy[cc] | 0.86 cc | |||||
Brain_noPTV | BRAIN_PTV | Mean[Gy] | 2.680 Gy | |||||
PTV1 | 1PTV_LP_21 | V100%[%] | >=99 | Goal | 99.80 % | |||
GTV1 | 1GTV_LP | Max[%] | 135.2 % | |||||
GTV1 | 1GTV_LP | Max[Gy] | 28.387 Gy | |||||
GTV1 | 1GTV_LP | Min[Gy] | 25.003 Gy | |||||
GTV1 | 1GTV_LP | V100%[cc] | 0.22 cc | |||||
GTV1 | 1GTV_LP | Volume[cc] | 0.22 cc | |||||
PTV2 | 2PTV_LPG_21 | V100%[%] | >=99 | Goal | 99.00 % | |||
GTV2 | 2GTV_LPG | Max[%] | 125.0 % | |||||
GTV2 | 2GTV_LPG | Max[Gy] | 26.248 Gy | |||||
GTV2 | 2GTV_LPG | Min[Gy] | 22.435 Gy | |||||
GTV2 | 2GTV_LPG | V100%[cc] | 1.15 cc | |||||
GTV2 | 2GTV_LPG | Volume[cc] | 1.15 cc | |||||
PTV3 | 3PTV_RP_21 | V100%[%] | >=99 | Goal | 99.35 % | |||
GTV3 | 3GTV_RP | Max[%] | 133.1 % | |||||
GTV3 | 3GTV_RP | Max[Gy] | 27.949 Gy | |||||
GTV3 | 3GTV_RP | Min[Gy] | 23.127 Gy | |||||
GTV3 | 3GTV_RP | V100%[cc] | 1.36 cc | |||||
GTV3 | 3GTV_RP | Volume[cc] | 1.36 cc | |||||
PTV4 | 4PTV_RF_21 | V100%[%] | >=99 | Goal | 100.00 % | |||
GTV4 | 4GTV_RF | Max[%] | 147.5 % | |||||
GTV4 | 4GTV_RF | Max[Gy] | 30.975 Gy | |||||
GTV4 | 4GTV_RF | Min[Gy] | 27.539 Gy | |||||
GTV4 | 4GTV_RF | V100%[cc] | 0.07 cc | |||||
GTV4 | 4GTV_RF | Volume[cc] | 0.07 cc | |||||
PTV5 | 5PTV_RT_18 | V18Gy[%] | >=99 | Goal | 99.48 % | |||
GTV5 | 5GTV_RT | Max[%] | 111.7 % | |||||
GTV5 | 5GTV_RT | Max[Gy] | 23.454 Gy | |||||
GTV5 | 5GTV_RT | Min[Gy] | 20.145 Gy | |||||
GTV5 | 5GTV_RT | V100%[cc] | 1.76 cc | |||||
GTV5 | 5GTV_RT | Volume[cc] | 1.92 cc | |||||
Brainstem | Brainstem | Max[Gy] | 9.908 Gy | |||||
Chiasm | Chiasm | Max[Gy] | 6.743 Gy | |||||
OpticNerve_L | OptNrv_L | Max[Gy] | 3.419 Gy | |||||
OpticNerve_R | OptNrv_R | Max[Gy] | 6.115 Gy | |||||
Eye_L | Eye_L | Max[Gy] | 2.922 Gy | |||||
Eye_R | Eye_R | Max[Gy] | 2.904 Gy |
HyperArc was utilized for this case which means it used a very simplified workflow for planning and delivery. First the immobilization device is added as a structure model to the patient. Then, creating a new HyperArc plan walks the user through the process of placing the isocenter of the predefined HyperArc beam set and identifying the target structures and their desired Rx dose. At that point the Photon Optimizer can be launched automatically which includes preset lower objectives for each target with 100 priority and the HyperArc exclusive SRS NTO (also with 100 priority) which is tuned specifically to enforce a sharp dose falloff and prevent dose bridging of adjacent disparate targets.
Eclipse 15.5+ also features the Automatic Lower Dose Objective (ALDO) which, when enabled in the Photon Optimizer, in the background automatically adjusts dose/priority to keep dose converge on targets near 98%. Enabling ALDO thereby balances dose received by each target prescribed to the same dose level during optimization.
The plan presented here was created with no user interaction during optimization. ALDO was enabled and optimization was started. The Photon Optimizer calculation option Convergence Mode was set to Extended.
3rd party software plan report |
DICOM patient export |
Any reference to a "plan study" are simply what the organizers call each case and may not be a "study" in the FDA sense as they may not have been published in a peer reviewed journal.
Varian does not provide medical advice and these are illustrative examples only.
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