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HDR Brachytherapy

HDR Brachytherapy. Nicolas G. Zouain, MD Department of Radiation Oncology Roger Maris Cancer Center. History. 1905. History. 1920’s. Dose Rate. Low dose rate (LDR) 0.4 to 2 Gy/hr Medium dose rate (MDR) 2 to 12 Gy/hr High dose rate (HDR)

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HDR Brachytherapy

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  1. HDR Brachytherapy Nicolas G. Zouain, MD Department of Radiation Oncology Roger Maris Cancer Center

  2. History 1905

  3. History 1920’s

  4. Dose Rate • Low dose rate (LDR) • 0.4 to 2 Gy/hr • Medium dose rate (MDR) • 2 to 12 Gy/hr • High dose rate (HDR) • > 12 Gy/hr but usually in the region of 150 Gy/hr ~ 2.5 Gy/min

  5. Why Brachytherapy • Delivering the high dose of radiation to the tumor • Sparing of the surrounding normal tissues • Delivered in a short period of time • Tumor repopulation • Limited to localized tumors

  6. High Dose Inside of the Tumor 25% 100% 150%

  7. HDR Afterloading Machine Iridium-192

  8. Prostate HDR Brachytherapy

  9. Breast HDR Brachytherapy

  10. Lungs HDR Brachytherapy

  11. Esophagus HDR Brachytherapy

  12. Cervix HDR Brachytherapy

  13. Uterus HDR Brachytherapy

  14. H&N HDR Brachytherapy

  15. H&N HDR Brachytherapy

  16. Rectal Brachytherapy

  17. Rectal Brachytherapy

  18. Rectal Brachytherapy

  19. Templates

  20. Trans Rectal Ultrasound

  21. Ultrasound Stepper

  22. Ultrasound Stepper Stabilizer

  23. TRUS Guided Needles Insertion

  24. MammoSite

  25. Lumpectomy Cavity is Created Troacar Used to Create Pathway to Cavity MammoSite Un-inflated MammoSite is Advanced into the Cavity Through the Troacar Path

  26. Design allows the 192Ir Source to be Centrally Positioned within the Applicator The 192Ir Source is Delivered Into the MammoSite and Radiation Therapy is Delivered Per the Treatment Plan MammoSite is Inflated to Position the Tissue to Receive Radiation Therapy MammoSite

  27. MammoSite

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