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A dose of 200 cGy is to be delivered at a depth of 10 cm. at 100 SAD, from a single 15 cm. x 15 cm. field with 6 MV x-rays. Given the information below, what would the treatment monitor units be?                            TMR (15 cm. x15 cm., depth 10 cm.) = 0.806                                                     PDD (100 SSD, 15 cm. x 15 cm., depth = 10 cm.) = 72.2%                            Output in air, 100 SAD, 15 cm. x 15 cm. field size = 1.015 cGy/MU             BSF (15 cm. x 15 cm.) = 1.044

The ECOG and Karnofsky Scales are common tools for physicians and other healthcare professionals to assess a patient’s ability to withstand treatment.  Which are true of these scales:                                                            1.     Both estimate functionality status                                                            2.     The Karnofsky scale has more detailed categories                                                            3.     “0” = dead on each scale

When performing tracheostomy care for a patient, what is the appropriate technique for cleaning the inner cannula?

Name the process when a neutron in an unstable nucleus transforms into a proton, electron and antineutrino:

The intensity of a high energy photon beam at any given distance from the source is:

Virchow’s node is located in the:

The V20 of the lung is:

In general, the best method for a radiation therapist to maintain medical asepsis and avoid the spread of infection is by frequent and proper:

The principal difference between an x-ray photon and a gamma ray is the:

According to the current NCRP recommendations, the guidance level for cumulative exposures should be calculated using the formula: