The proton beam RBE at the end of the spread out Bragg Peak is _____ the RBE at the center of the spread out Bragg Peak.

What literature source would you reference to determine healthy tissue dose constraints for SRS/SBRT plans?

The main advantage of proton beams over photon beams is _____.

Who is responsible for delineating the GTV?

In SRS for brain metastasis, what the maximum dose when 20 Gy is prescribed to the 60% isodose line?

In ultrasound, as transducer frequency increases, depth of penetration _____ and spatial resolution along the direction of the beam _____.

Which dose calculation algorithm uses the concept of radiological scaling to adjust the kernel for lower density tissues like lung?

An incident photon has an energy of 5 MeV and undergoes a pair production interaction, producing a positron-electron pair. The combined kinetic energy of this pair will be _____ MeV.

Which of the following is a feature of proton pencil beam scanning?

How many gray levels are in an image with 10 bits per voxel?