F Part I

Question 1

used to plan tx for dentures, braces, extractions and implants

Answer 1

dental x-ray unit

Question 2

for breast imaging

Answer 2

mammography unit

Question 3

located at the front of II, accepts the screen-film cxt and parks it out of the way during fluoroscopy

Answer 3

cinefluoro unit

Question 4

science of recording rad images electronically on a Se plate

Answer 4

xeroradiography unit

Question 5

eliminiates undesirable “free play”

Answer 5

automatic cassette changer

Question 6

permanent record is made and film cost is considerably reduced

Answer 6

photofluoroscopy unit

Question 7

made of silver activated Zn-Cd Sulfide

Answer 7

output phosphor

Question 8

image on the [..] is reduced in size which is one of the resons it is brighter

Answer 8

output phosphor

Question 9

curved to ensure that electrons emitted at the peripheral regions of the photocathode travel the same dist as those emitted from the central region.

Answer 9

input phosphor

Question 10

2 to 4mm thick and lined with lead to protect the operator from stray rad

Answer 10

glass envelope

Question 11

it is where photoelectrons are converted to light photons.

Answer 11

output phosphor

Question 12

dimmer image results due to

Answer 12

magnification

Question 13

most commonly used [..] is a layer of sodium activated caesium iodide

Answer 13

input phosphor

Question 14

converts light photons to photoelectrons

Answer 14

photocathode

Question 15

comprises a very thin layer of antomony caesium alloy that has a spectral sensitivity well matched to the blue light emission of Csl;Na

Answer 15

Photocathode

Question 16

focuses the electron beam as it flows from the photocathode toward outer phosphor

Answer 16

electronic llense