Electricity is best defined as the movement of what subatomic particle?

A lateral projection of the hip is obtained using 70 kVp, 200 mA, 31.2 ms, no grid, 40″ SID, and a 1.2 mm focal spot size. What is the net effect of using a 5:1 grid and increasing the mA to 400? RAD 120 FINAL EXTRA CREDIT (5 points total)

An iron bar wrapped with a wire carrying electric current is referred to as what device?

Which of the following is TRUE if the SID is decreased to 40″? 1 magnification will decrease 2 magnification will increase 3 EI_S will increase rad120q65-66.jpg

Which of the following is TRUE regarding the grid designs below: Grid A: Lead strips 120 um wide, Interspacing 80 um wide Grid B: Lead strips 60 um wide, Interspacing 100 um wide

During manufacturing, if the height of the lead strips in question number 6 was reduced to 20 mm and the interspace material was increased to 4 mm, the grid would be more effective at removing scattered x-ray photons with the lead strip unchanged.

If the radiographer collimates to a 14″ X 17″ image receptor size on an AP projection of the thoracic spine when using the center AEC chamber, what will the resultant radiograph will demonstrate? Standard protocol requires 6″ X 17″ collimation.

A radiograph of the AC joints using 72 kVp, 15 mAs, 40â SID, and an 8:1 ratio grid on a direct exposure digital system and produced an acceptable 210 EI. If the procedure is performed using a 60â SID, calculate the mAs required to produce a comparable EI value.

A mobile AP projection of the shoulder is obtained using 70 kVp, 12.5 mAs, 40â SID, non-grid. The image demonstrates acceptable density but must be repeated due to the low contrast. Using an 8:1 grid, what set of exposure factors should be used for the repeat image?

What is the net effect of using a lower kVp than protocol on receptor exposure?