When radiographic images are produced during portal imaging using megavoltages,
A) high contrast images are produced due to the number of photoelectric interactions.
B) pair production and Compton interactions predominate.
C) very low contrast images are produced.
D) both b and c
Correct Answer:
Verified
Q14: PET/CTs are considered
A)hybrid machines.
B)essential to fusion imaging.
C)integral
Q15: The very first successful use of radiation
Q16: Palliative treatment plans
A)are intended to cure the
Q17: Radiotherapy treatment plans
A)are the responsibility of the
Q18: Image guided radiation therapy (IGRT)
A)permits the placement
Q20: X-rays used for radiotherapy
A)are in the megavoltage
Q21: Match the following choices with the correct
Q22: Stereotactic radiosurgery (SRS) is most effective with
A)breast
Q23: Match the following choices with the correct
Q24: Proton radiotherapy is particularly beneficial because of
A)protons
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