True or False? Research is an ongoing process that builds on previous knowledge.

True or False? The number of subjects is generally larger in qualitative research then in quantitative research.

True or False? When a researcher is interested in an area in which little research has been done or in which existing theories are not sufficient, grounded theory studies are a good choice.

During CT simulation of the thorax, a lesion in the cervix is at a distance of 29 cm from the image detectors and an object to image distance of 7.5 cm. The lesion measures 3.2 cm on the image. Determine the magnification factor.

One of the problems with image guided radiation therapy is 

EXTRA CREDIT: The probability of photoelectric effects depends on the energy of the incoming photon and the 

Which of the following statements is true of kilovoltage x-ray units on a linear accelerator?

EXTRA CREDIT: According to the current recommendations, which of the following will have the highest annual effective dose equivalent limit? 

Therapeutic protons are accelerated energies typically in the range of 

A patient is being treated on a 10 MV linear accelerator at 100 SSD with a reference dose rate of 0.997 cGy/MU. The collimator setting is 12 x 12 with a scatter factor of 1.005. The blocked field has an equivalent factor square of 6 x 6 with a phantom scatter of 0.995. The dose to be delivered is to a depth of 6.5 cm with a percentage depth dose of 81.3. The prescribed dose is 250 cGy per fraction. The doctor orders a parallel opposed AP/PA. What is the MU for each portal?