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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 to a 12:1 grid ratio 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

The recorded detail of a radiographic image can be affected by which of the following:1)  SID2)  Focal Spot Size3)  OID4)  mAs5)  kVp6)  Patient Motion7)  Detector DEL size

A technique of 10 mAs at 78 kVp is used at a 140 cm (56”) SID. What new SID should be used to decrease the exposure to 5 mAs at 78 kVp?

Short-dimension grids, where the grid lines run  with the short axis of the grid instead of the normal long axis, are useful for which of the following?

A radiograph of the shoulder is produced using 12 milliampere-seconds (mAs) and 75 kilovoltage peak (kVp) at the wall bucky. How could the technique be changed to decrease contrast while maintaining the same receptor exposure?

What is the magnification factor when an source-to-image distance (SID) of 42 inches is used and there is an object-to-image distance (OID) of 10 inches?

An increase in filtration has what effect on IR exposure?

The intensity of scattered radiation from a patient is measured as 0.1 mSv/min at a distance of 2 meters. What is the intensity at a distance of 1 meter?

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

The SID is demonstrated on the above image by the letter: