Exam 16: Particle Therapy

Hounsfield units should be converted to correct for particle ___________ when using computed tomography (CT)for proton therapy planning?

The proton beam is focused and shaped by devices in which of the following?

What is the shape of the proton beam as it passes through the transport system?

Who discovered the Bragg peak phenomenon?

What are the typical therapeutic proton beam energies?

In an SOBP proton beam, as depth increases, linear energy transfer (LET)does what?

An acrylic or wax compensator may be necessary during proton therapy to do which of the following?

Which of the following is one common characteristic for uniform and nonuniform scanning systems that they both are able to do?

Most small footprint proton systems have gantry rotation capabilities up to which of the following?

Custom compensators used in proton therapy are often made of which of the following?

The spread out Bragg peak (SOBP)is created by which of the following?

The water equivalent thickness (WET)of an immobilization device used during proton therapy can affect which of the following attributes of the beam?

Internal target motion can be accounted for by _____________ the compensator used in proton therapy.

The tumor types treated in the earliest years of proton therapy included those in or near which of the following? (Select two.)

What do the results of a clinical study completed at MD Anderson indicate regarding when adaptive planning is strongly indicated?

Protons have an accepted relative biological effect (RBE)value of which of the following?

Which of the following is the most reliable method for verifying beam clearance before a patient is treated?

Patch planning is an approach used when matching two proton fields together based on their __________.

Although several heavy particles may be used therapeutically, proton therapy represents _____% of the particle therapy market in the United States.

What is one disadvantage of today's synchrocyclotron over the cyclotron?