Lab Midterm

Question 2

The doctor reviews a radiograph that was just taken and requests that it be repeated and it needs more radiographic density. Give two methods to increase radiographic density.

Answer 2

Increase mAs or kVp by 10-15%

Question 3

The lead equivalent in the protective apparel at CSN is sufficient to block a limited amount of X-ray photons,. what is the lead equivalent and how much penetration does it provide from the primary X-ray beam?

Question 4

The X-ray machine at CSN can produce hard copy films and digital images. Explain the steps required to obtain a digital image using the machine.

Answer 4

Move X-ray machine to the left
Input patient information into computer
Select species of patient
Select body part being radiographed
Measure patient in CM …
Still working on this one

Question 5

This apparently is an xray at station one

Answer 5

Screen to film contact like the paper (what Diego wrote…)

Question 6

Explain why it is not acceptable to place a glove or other piece of lead over your hand while you are holding an animal.

Answer 6

The scatter photons will go around the lead to hit the hand from underneath.

Question 7

Explain the process that we use develop a film at CSN. Include the steps that occur inside the automatic processor.

Question 8

Explain how the starting settings for the xray machine are determined when you are creating a technique chart

Question 9

Explain what effect tissue density has on a radiographic image

Answer 9

The less dense a tissue is the more photons can penetrate it, that’s why air should be completely black and metal is white.

Question 10

Using simple lines, draw one of the two methods for X-ray photon production. Indicate what happens during the process.

Question 11

Explain how the starting settings for the xray machine are determined when you are creating a technique chart.