DM a beat-Pre procedure

Question 1

ALARA

Answer 1

As Low As Reasonably Achievable

Question 2

What increases radiation exposure

Answer 2

Additional unnecessary images in the same angles. increasing magnification

Question 3

The three principles of reducting radiation

Answer 3

Time- on the pedal
Distance- from the source
Shielding-lead apron, glasses and lead glass

Question 4

DSA stands for

Answer 4

digital subtraction angiography
DSA is traditionaly used for imaging of the peripheral vascularature because it requires everything in the image to be perfectly still

Question 5

benefits of DSA imaging

Answer 5

less contrast usage, higher resolution and rapid image acquisition

Question 6

disadvantages of DSA imaging

Answer 6

increases radiation, requires montionless acquistion

Question 7

DSA increases radiation exposure to

Answer 7

20 fold

Question 8

Annual maximum radiation exposure is

Answer 8

5 REM or 50 MsV (millisieverts)

Question 9

An anode has a

Answer 9

positive charge in the setting of the x-ray source

Question 10

A cathode has a

Answer 10

negative charge in the setting of the x-ray source

Question 11

Air kerma is measured in

Answer 11

Gray (Gy)

Question 12

DAP is

Answer 12

the cumulative sum of instantaneous air kerma and the x-ray field area. It is measured in Gray-centimeter squared (gy.cm^2) and reflects the estimated dose recieved by the patient

Question 13

The image intensifier

Answer 13

part of the xray machine that converts the x-rays recieved into the images we see on the screen

Question 14

examples of steep angles

Answer 14

LAO 40 Cranial 40 instead of a shallow angle such as LAO 20 Caudal 20