Blog

If sufficient energy is given to the atom, one or more electrons of the atom can overcome their binding energy and can be completely removed from the atom. This process is called __________________.

When some energy is imparted to the electrons of the atom, they will move to higher energy empty states. This process is called which of the following?

Solve for x in the equation x2 – 1 = 0.

In radiation therapy, which of the following interactions with matter are least important?

Why is finding the equivalent square important when performing calculations?

At what rate does the cobalt 60 source decay?

What is the range in soft tissue of a 12 MeV electron beam?

Which of the following limited the use of orthovoltage x-ray machines for radiation therapy?

USE HANDOUT TABLES FOR THE FOLLOWING CALCULATIONA patient is treated on a 6 MV linac treatment machine at 100 cm SSD to his left hip.  The patient is supine and is being treated through a single field.  The collimator setting is 17 x 12 cm.  Some blocking is used to shape the field and the EFS is determined to be 12 x 12 cm.  The blocks are mounted on a slotted lucite tray which is       5 mm in thickness.  The prescription states that a dose of 3000 cGy is to be delivered to a depth of 5 cm in 10 fractions.  Calculate the MUs per fraction.Calculate the treatment time.

When a patient is treated with a single field, the dose at Dmax, should be calculated and recorded due to which of the following?