Blog

As one visually looks across an image, the abruptness with which the edges of a particular image “stop” would define the image’s:

The size of the effective focal spot is controlled by all of the following except:

The anode disc slows down or breaks by spinning in reverse after exposure.

Ms. Jones is a 5’2” patient under respiratory care services. What is her anatomical deadspace?

The typical range of anode bevel angles for general purpose diagnostic x-ray tubes is:

An AP chest x-ray was taken using 5 mAs at 65 inches.  The radiographer is repeating the chest x-ray at 72 inches.  What will the new mAs need to be to maintain the same receptor exposure? (round to the nearest answer)

The focal spot size at the anode was 1.5mm in the x-ray tube used by the radiographer.  The radiographer decided to use 300mA to control motion.  The radiographer used a 45″ SID with an OID of 5 inches.  What will the unsharpness be? (round to the nearest answer)

Foreshortening is a form of:

An increase in focal spot size will ultimately _________ penumbra.

A preliminary radiograph of the gall bladder is taken of the right upper quadrant on an 10×12 inch FOV using 20 mAs and 70 kVp.  The radiologist requests a KUB on a 14×17 inch FOV because he or she thinks the patient might have an early bowel obstruction and he or she needs to see the whole abdomen.  What new mAs is required?