A Mammosite HDR applicator is expanded to a diameter of 6 cm. The prescription point (QA point in the above) is 1 cm past the surface. What dose will the tissue abutting the surface of the balloon get relative to the prescription? What would the surface dose be if the diameter of the balloon was 4 cm (same prescription convention of 1 cm from balloon)?

Phlebotomy Essentials
6th Edition
ISBN:9781451194524
Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Chapter1: Phlebotomy: Past And Present And The Healthcare Setting
Section: Chapter Questions
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A Mammosite HDR applicator is expanded to a diameter of 6 cm. The
prescription point (QA point in the above) is 1 cm past the surface. What dose
will the tissue abutting the surface of the balloon get relative to the prescription?
What would the surface dose be if the diameter of the balloon was 4 cm (same
prescription convention of 1 cm from balloon)?
Balloon
Equator
QA point
HDR
dwell position
Transcribed Image Text:A Mammosite HDR applicator is expanded to a diameter of 6 cm. The prescription point (QA point in the above) is 1 cm past the surface. What dose will the tissue abutting the surface of the balloon get relative to the prescription? What would the surface dose be if the diameter of the balloon was 4 cm (same prescription convention of 1 cm from balloon)? Balloon Equator QA point HDR dwell position
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