5 –fraction HCC Liver SBRT Planning Worksheet Prescription: 40 Gy in 5 fractions (CTP B) Conformality: Target Value default custom 95% Volume of PTV covered by prescription Point maximum dose 115-140% Volume outside the PTV receving > 105% prescription 0 cc Conformality Index (ratio of prescription volume:PTV volume) < 1.3 R50 (ratio of 50% isodose volume: PTV volume) <4 Volume > 2cm from PTV receving > 50% prescription 0 cc Actual Normal Structures: Higher priority than PTV? Actual metric Target Value default Liver - GTV <12 Gy vol >500 cc cc Liver – GTV >18 Gy vol <33% % Spinal Cord 30 Gy vol Point max Esophagus 35 Gy vol Point max cc Esophagus 27.5 Gy vol < 5 cc cc Point max Gy Structure Stomach Relevant (check) 32 Gy vol custom Yes Gy Stomach 28 Gy vol < 5cc cc Heart/great vessels 38 Gy vol Point max Gy Heart /great vessels 32 Gy vol <15 cc cc Both Kidneys 17.5 Gy >200 cc cc Renal Hilum 23 Gy vol <67% % Skin 32 Gy Point max Gy Chest Wall 30 Gy vol < 30cc Cc Chest Wall 60 Gy vol < 1cc cc Small Bowel 32 Gy Point max Gy Small Bowel 18 Gy vol <5 cc cc Large Bowel 35 Gy vol Point max Gy Large Bowel 25 Gy vol <20 cc cc Normal tissue structures to be contoured for all cases. Use AVE-‐IP scan. Liver – entire liver Kidneys – both kidneys Spinal cord-‐ contour entire spinal canal, 3 cm above and below PTV Small bowel and large bowel – individual loops, 3 cm above and below PTV Chest wall-‐ 2 cm thick, including ribs and vertebrae, within 3 cm of PTV Rev 4/2012 -BC
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