4. How far will a 12 MeV electron beam travel in tissue? a. 3cm b. 3.6cm c. 4cm d. 6cm

Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter14: Nuclear Physics Applications
Section: Chapter Questions
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4. How far will a 12 MeV electron beam travel in tissue?
a. 3cm
b. 3.6cm
c. 4cm
d. 6cm
5. A tumor lesion is 5.2cm deep, what electron beam energy would ensure 90% Isodose
coverage to the deepest edge of the lesion?
a. 12 Mev
b. 16 MeV
c. 18 MeV
d. 22 Mev
6. Calculate the shielding thickness of Cerrobend need to reduce a 16MEV electron to less
than 5% intensity.
a. 6.6mm
b. 8.4mm
c. 10.2mm
d. 10.8mm
Transcribed Image Text:4. How far will a 12 MeV electron beam travel in tissue? a. 3cm b. 3.6cm c. 4cm d. 6cm 5. A tumor lesion is 5.2cm deep, what electron beam energy would ensure 90% Isodose coverage to the deepest edge of the lesion? a. 12 Mev b. 16 MeV c. 18 MeV d. 22 Mev 6. Calculate the shielding thickness of Cerrobend need to reduce a 16MEV electron to less than 5% intensity. a. 6.6mm b. 8.4mm c. 10.2mm d. 10.8mm
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