The inverse square law defines the relationship between distance and:

Adding filtration in the path of the beam results in the x-ray emission spectrum:

All filtration can be expressed in terms of the thickness of

When changing your SID from 72” to 50”

Calculate the new mA required to maintain the same IR exposure produced with the original values.

If an initial exposure is made using 800 mA, 0.02 sec, 16 mAs, 70 kVp, 58” SID, 4 “ OID, 5:1 grid ratio, 0.2 mm focal spot and 3.0 mm of filtration, with a 14 x 17 in field size, and the technologist changes the exposure time to 0.04 sec for a second exposure without changing any other factors, what differences would you expect to see in the second exposure?1) Increased IR exposure2) Decreased IR exposure3) Increased contrast4) Decreased contrast5) Increased spatial resolution6) Decreased spatial resolution7) Increased distortion8) Decreased distortion

If the radiograph is taken using beam position 1, which part would appear on the left side of the image?

If the patient dose is 1 mGy at a 72 inch SID, what is the patient dose at a 40 inch SID using the same technical factors?

The central ray is located in the center of the:

When the anatomy being imaged is parallel to the image receptor, and the X-ray beam is angled, what type of shape distortion will result?