e- Blk w/TomoHDA & Ray6 HOME

2018_07_25

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At Tomo

• Pre-Start: cut & pour block, power up, run software, 5-min warmup, AIRSCANS

• Select Patient: ‘STEREOPHAN, IMAGING’, [ fine pitch, 1mm slices ]

• Select slices → Accept slices … Prepare scan → OK → Setup → Yes

  +/- cm scan

  6x6	10x6	10x10	15x15	20x20	25x25
  4	4	6	9	12	14

• Setup electron block, green lasers at insert center-exit

  

• Main → Ready → Yes … Key → Image → Key → check image for voids

• Tools → Clear selected patient → Tools → Dicom Options → Export Items

• Export to: RaySearch … select correct ‘CTrue Image’ → Send Now → Close

At RayStation

• Patient Data / Patient Information

  • Import new patient → [ ‘Storage SCP’, ‘STEREOPHAN, IMAGING’, ‘CT Series’]
  • ‘Import’ → if prompted, ‘Create a new patient’ then ‘OK’
  • Edit patient data → [Patient ID, First name, Last name] → ‘OK’ → ‘Yes’
  • Image Sets / Properties → confirm correct density table → ‘OK’

• Patient Modeling / Structure Definition / ROI Tools

  • Set Coronal view, all axes on block center → Rt-click, Preset, Inner ear

  • New ROI geometry / Create new ROI… [Name: aperture, Type:PTV] → ‘OK’

    Outline block opening w/Spline tool → Set Transversal view

  • New ROI geometry / Basic shapes / Create box ROI…

    [ R-L/I-S/P-A = 10/10/5, Center: Geometric Center of ROI: aperture, Output / New ROI / Name: air_gap, Type: undefined] → ‘OK’

  • New ROI geometry / Basic shapes / Create box ROI…

    [ R-L/I-S/P-A from below, Center: Geometric Center of ROI: aperture, Output / New ROI / Name: phantom, Type: undefined] → ‘OK’

    	6x6	10x6	10x10	15x15	20x20	25x25
    6E	8,8, 4	12,12, 4	12,12, 4	17,17, 4	22,22, 4	27,27, 4
    9E	8,8, 6	12,12, 6	12,12, 6	17,17, 6	22,22, 6	27,27, 6
    12E	8,8, 8	12,12, 8	12,12, 8	17,17, 8	22,22, 8	27,27, 8
    16E	8,8,10	12,12,10	12,12,10	17,17,10	22,22,10	27,27,10
    20E	8,8,12	12,12,12	12,12,12	17,17,12	22,22,12	27,27,12

  • Translate: ‘air_gap’ to bottom of block, ‘phantom’ to bottom of ‘air_gap’

• Plan Design / Plan Setup

  • New plan+ → Do you want to save the changes? → ‘Yes’

    [Name: Cutout, Planned by: you, Patient Treatment position: HFS, Modality: Electrons, Treatment Technique: Applicator and cutout, Treatment machine: Clinac-iXsn3694, Create setup beams: No, Dose prescription: 180 cGy x 1fx, ROI / phantom, Prescription type: Dose at volume%: 0, Auto scale:Yes] → ‘OK’

    Grid Settings

    [ Resolution: 0.10, Use Uniform Resolution:Yes, Set default size ] → OK In planning windows, Rt-click, Edit dose grid, adjust to include aperture

  • Beams / Add

    [ Name: 01, Description: AP Electron, MeV: 6, Isocenter Name: SSD=100, Isocenter Location: “Center of ROI: phantom”, copy position, Angles:180/180/180, Applicator: Varian 6x6, Cutout name: cutout, Cerrobend, 1.7 cm] → ‘OK’

    Overwrite “SSD [cm] To surface” to 100

    Setup Beams → Delete, Delete, Delete (if present)

• Plan Design / Electron Beam Design / Treat and Protect

  Treat=aperture, Protect=’‘, Margins= 0,0,0,0 → ‘Conform all beams’ Settings / Number of histories per cm2 = 1,000,000 → ‘OK’

  Final dose → long wait →

  

  Ctrl-P → ‘Yes’, ‘Yes’, ‘Yes’ → Template: ‘Electron - Clinical Sim’