Final answer:
b) False, The highest energy scatter during fluoroscopy does not occur at a 45 degrees angle but is typically higher at angles closer to 90 to 135 degrees from the incident beam due to the nature of Compton scattering.
Step-by-step explanation:
The statement is false. During fluoroscopy, when a photon collides with a free electron, we observe Compton scattering. The scattered photons can exit at any angle, but the distribution of scattered photons is not uniform in all directions. At a scattering angle of 45 degrees, the energy transfer to the scattered photons is significant, but the angle that typically produces the highest energy scatter is closer to 90 to 135 degrees from the incident beam direction. This is because the scattered photon retains more energy when it is ejected backward rather than to the side. Therefore, the highest energy scatter does not occur precisely at a 45 degrees angle.