Author: Anonymous

* When an aluminum filter is added to the x-ray tube, what happens to the average energy of the beam?

* A radiologic technologist is using an X-ray machine with a grid to reduce scatter radiation. The initial exposure settings without a grid were 5 mAs. After placing a 8:1 grid, what should the new mAs be to maintain image receptor exposure?

What does the Detective Quantum Efficiency (DQE) in radiology measure?

What is the pixel size of a 525 x 525 matrix with a 25 cm FOV and a 40” SID?

The luminescence of blue-violet light from a CR fluorohalide, due to laser stimulation:

If you had used 40 mAs at 75 kVp at a distance of 72” and then you repeat the image at a distance of 40”, what would your new mAs need to be in order to maintain your IR exposure?

Radiographic contrast in computed radiography may be adjusted by changing the:

Increasing kVp of an x-ray beam will result in the photon having:

* A radiograph shows normal exposure in the center but slight under exposure along both edges. Which grid error most likely occurred? 

* Which three factors contribute to increased scatter radiation during an X-ray examination?