Question

6 multiple choice 1 point in a compound filter, how are the materials arranged in relationship to the x - ray source? lower atomic number, closer to the tube - higher atomic number closer to the patient both at same level higher atomic number, closest to the tube - lower atomic number closer to the patient higher atomic number closest to the patient - lower atomic number, closer to the patient 7 essay 1 point what are the two most common compensating filters?

Explanation:

In a compound filter for x - rays, materials are arranged such that the lower atomic number material is closer to the x - ray tube (source) and the higher atomic number material is closer to the patient. This is to first pre - filter the x - ray beam with the lower atomic number material and then further adjust the beam quality with the higher atomic number material closer to the patient. The two most common compensating filters are the wedge filter and the trough filter. The wedge filter is used to compensate for uneven thickness of the patient's body part being imaged, while the trough filter is used for imaging body parts with a more uniform thickness but where central and peripheral regions need different levels of x - ray attenuation.

Answer:

1. lower atomic number, closer to the tube - higher atomic number closer to the patient
2. Wedge filter, Trough filter