Lecture 2

Question 1

effective dose

Answer 1

incorportated the equivalent dose and radiosensitivity

Question 2

equivilent dose

Answer 2

incorporates the type of radiation only

Question 3

how to minimize exposure to patient

Answer 3

immobilization and effective communication

Question 4

ways to reduce radiation to the patient 8

Answer 4

SID
PA vs AP
collimation devices
protective filtration
grids
protective shielding
optimum processing
IR sensitivity

Question 5

whats the minimum source to skin distance

Answer 5

30 cm

Question 6

types of x-ray beam limitation devices

Answer 6

1. light localizing variable-aperture rectangular collimator
2. aperture diaphragms
3. cones
4. cylinders

Question 7

what are the types of filtration

Answer 7

inherent
added

Question 8

way to test the filtration in the beam

Answer 8

half- value layer

Question 9

whats the most common filtration

Answer 9

aluminum

Question 10

compensating filters

Answer 10

wedge filters
boomerang

cover some of the image to even out the image

Question 11

what does DQE stand for

Answer 11

detector quantum efficiency

Question 12

the smaller the imaging mode ;

Answer 12

more magnification
more patient dose

Question 13

when is c-arm used

Answer 13

in operating room for orthopedic procedures, cardiac imaging, interventional procedures

Question 14

what is entrance skin exposure

Answer 14

Measurement of radiation output at the point of skin entry

Question 15

how to test ESE

Answer 15

place dosimeter onto of phantom and compare to diagnostic reference levels

Question 16

does ESE have to be lower or larger than diagnostic reference levels

Answer 16

they have to be lower or equal to