Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

RapidArc PowerPoint Presentation

600 views

Published on

  • Be the first to comment

  • Be the first to like this

RapidArc PowerPoint Presentation

  1. 1. RapidArc™ radiotherapy technology Vasthi Wilson, MD, MSc New Jersey Health Network Egg Harbor Township, NJ
  2. 2. The Evolution of Arc Therapy Unshaped Arcs I M P R O V I N G P R E C I S I O N A N D S P E E D 19651965 RapidArc™ radiotherapy technology 2008200820002000 Dynamic Conformal Arcs 20032003 Slice Based Arcs
  3. 3. RapidArc Single Arc IMRT
  4. 4. RapidArc Objectives • Dose conformity • Tissue sparing • Plan complexity • Treatment time • Risk of secondary cancer
  5. 5. RapidArc Dose Conformity - Prostate RapidArc Single arc IMRT Conventional 5-field IMRT 719 MU589 MU
  6. 6. RapidArc Single arc IMRT Conventional 5-field IMRT 719 MU589 MU RapidArc Dose Conformity - Prostate
  7. 7. RapidArc (solid) IMRT (dashed) PTV Bladder Rectum RapidArc Dose Conformity - Prostate
  8. 8. RapidArc Dose Conformity - Spine RapidArc Single arc IMRT SBRT 11-field IMRT 3072 MU2174 MU
  9. 9. VARIAN Medical Systems RapidArc Dose Conformity - Spine RapidArc Single arc IMRT SBRT 11-field IMRT 3072 MU2174 MU
  10. 10. RapidArc Dose Conformity - Spine RapidArc (solid) IMRT (dashed) PTV Spinal Cord Lungs
  11. 11. • Dose conformity • Tissue sparing • Plan complexity • Treatment time • Risk of secondary cancer RapidArc Objectives
  12. 12. RapidArc Tissue Sparing – H&N RapidArc Single arc IMRT Conventional 7-field IMRT 1685 MU496 MU
  13. 13. RapidArc Tissue Sparing – H&N RapidArc Single arc IMRT Conventional 7-field IMRT 1685 MU496 MU
  14. 14. RapidArc Tissue Sparing – H&N RapidArc (solid) IMRT (dashed) PTV 1PTV 2 Brainstem Cord Lt Parotid Rt ParotidRt SMG Larynx Mandible
  15. 15. • Dose conformity • Tissue sparing • Plan complexity • Treatment time • Risk of secondary cancer RapidArc Objectives
  16. 16. RapidArc Plan Simplicity • Single IMRT arc • 15-30 minutes to optimize • 10-20 minutes to calculate • Eclipse™ treatment planning system module
  17. 17. • Dose conformity • Tissue sparing • Plan complexity • Treatment time • Risk of secondary cancer RapidArc Objectives
  18. 18. RapidArc Treatment Time • Treat in 2 minutes or less • Efficient in monitor units (MU) < 600 MU/ 2Gy
  19. 19. RapidArc Treatment Time • Speed is accuracy – Greater patient comfort – Reduced external motion (wiggle factor) – Reduced internal motion (peristaltic motion)
  20. 20. RapidArc Treatment Time • Economics – Treat 16 more patients per day • Increase from 32 to 48 treatments • 15 minute standard treatment schedule • 10 minute RapidArc treatment schedule • Make time for more complex treatments • SRS, IGRT, DART™ dynamic adaptive radiation therapy
  21. 21. • Dose conformity • Tissue sparing • Plan complexity • Treatment time • Risk of secondary cancer RapidArc Objectives
  22. 22. RapidArc Reduced Risk • 30-60% fewer monitor units – Lower risk of secondary cancer induction – Less head scatter – Less MLC leakage
  23. 23. RapidArc Summary • Treat in under 2 minutes • Reduce out of field dose • Simple planning and treatment • Large treatment volume • No compromises

×