Question

26 multiple choice 1 point all of the following are true of k - edge filters except they are also called compound filters. copper and aluminum are the materials of choice. they rely on photoelectric interactions and the production of characteristic radiation. the x - ray beam traverses aluminum first, followed by the copper layer. 27 multiple choice 1 point for an x - ray beam operated at 80 kvp, the hvl should be 3.8 mm of al a lower hvl is necessary. the beam is harder than a 60 kvp beam adding filtration will increase patient dose.

Explanation:

Question 26

K - edge filters are compound filters that rely on photoelectric interactions and characteristic radiation production. Tungsten - rhenium and aluminum are common materials, not copper and aluminum. Also, the x - ray beam traverses aluminum first and then the other material layer.

Higher kVp means a harder x - ray beam. An 80 kVp beam is harder than a 60 kVp beam. HVL for 80 kVp is not 3.8 mm of Al, a lower HVL is not necessarily needed, and adding filtration reduces patient dose by removing low - energy photons.

Answer:

B. Copper and aluminum are the materials of choice.

Question 27