The largest contribution to the average US annual medical radiation exposure is from:

The average annual dose actually received by radiologic personnel in the US is closest to:

Which of the following is the most important treatment-related variable for the development of the late term effects of ionizing radiation?

The cumulative occupational exposure limit for a 22 year old radiation worker is:

A patient is given treatment BID with the same dose per fraction as conventional tx , less number of elapsed days and approximately the same total dose.  This type of fractionation schedule is:

The principle of fractionation refers to the relationship between:

As a radiation worker, your annual equivalent dose limit to your hand is:

Therapeutic ratio:

The SI units for equivalent dose are:

If a high school student wanted to do an unpaid internship in a radiology department, their dose limit would be: