Blog

When the end of the electron cone cannot be directed parallel to a sloping surface, which angle of obliquity will cause the greatest increase in altered dose distribution?

Dose that is received within bone is mainly dependent on 

The wedge angle is determined by the isodose lines at 

A patient is being treated on a 6 MV linear accelerator at 100 SSD with a reference dose rate of 0.998 cGy/MU. The collimator setting is 13 x 13 with a scatter factor of 1.007. The blocked field has an equivalent factor square of 7 x 7 with a phantom scatter of 0.997. The dose to be delivered is to a depth of 8 cm with a percentage depth dose of 79.3. The prescribed dose is 350 cGy per fraction. The doctor orders a parallel opposed AP/PA. What is the MU for each portal?

A monthly radiation exposure report says an employee received 0.5 Sv. If the source of exposure were determined to be gamma radiation, the translation to absorbed dose would be

Small lipid soluble molecules would move through the plasma membrane by

The spreading out of molecules from a center of higher concentration is the result of

A membrane allows glucose through but not sucrose and galactose. What type of membrane is this?  

A nurse is caring for a patient 24 hours post C5 spinal cord injury, which clinical manifestation would be most concerning?

Old lab notes, paper towels, and lens paper should be discarded into a _________ bin when you are finished with them.