The RBE is highest for:

The half life of Ir-192 is:

A radioactive source has a half-life of eight hours. How long would it take to reduce a 200 millicurie/hr. source to a level of 12.5 millicurie/hr.

All the following are characteristics of electrons except:

What should be prescribed to a patient suffering from inflammation of the brain?

What is the percent of error in the dose if a calibration is done at 97 cm SSD but the treatment is given at 100 cm SSD?

When treating a stage I Larynx cancer. Which of the following would be appropriate parts of their treatment plan? 1. Flash over anterior neck 2. Superior border at the top of the thyroid cartilage 3. Posterior border beyond the vertebral bodies 4. Conformal plan with opposed laterals with wedges 5. Total dose of 4000 cGy

According the Law of Bergonie and Tribondeau, the sensitivity of tissues to radiation depends upon: Mitotic activity of the cells Oxygen depletion in the cells Differentiation of the cells Rate of cell division

Transient myelitis can be seen in a patient:

What directs the beam during pencil beam scanning proton therapy treatments?