Geometric penumbra is the result of collimation.

What material is typically used as the target in D-T generators?

Calculate the geometric penumbra for a field prescribed to a depth of 5 cm on a 100 cm SSD linear accelerator if the source to collimator distance is 40 cm and the source size measures 5 mm.

The major advantage of high-energy protons and other heavy charged particles is their characteristic distribution of dose with depth.

A cyclotron is used for: 

Insertion of added filtration into the path of an x-ray beam causes:

Neutrons are produced mostly in the forward direction with a spectrum of energies.

The average energy of a cobalt-60 beam is:

In a linear accelerator, which of the following is the correct arrangement of components as “seen” by the beam: 1. Jaws (secondary collimator) 2. Ion chamber 3. Primary collimator 4. Target 5. Flattening filter

Orthovoltage units us various filters to achieve HVLs between ________ Cu.