OT 2

Question 1

What is quantum mottle?

Answer 1

A prominent graininess to the film.

Question 2

What do kink marks (crescent marks) occur from?

Answer 2

Bending or crimping the film.

Question 3

When is the latent image present?

Answer 3

After exposing the film, but before processing it.

Question 4

Generally, which of the following would make the phosphor layer of the screen faster?

Answer 4

Thicker composition.

Question 5

What film will create the radiographic image with greatest detail?

Answer 5

Single emulsion

Question 6

What color is recommended for your dark room walls (according to Dale Grunwald?

Answer 6

Red

Question 7

A 1200 screen speed system will demonstrate what appearance?

Answer 7

The film will be grainy.

Question 8

What is the name for the usual test for film screen contact?

Answer 8

Wire mesh test.

Question 9

With gradient screens, which of the following is fastest? The cervical section, the thoracic section, the lumbar section? Or do they all have the same speed?

Answer 9

The lumbar section has the fastest speed.

Question 10

Silver is usually recovered from which fluid?

Answer 10

Fixer

Question 11

What should be considered fi you are manually processing 30 14”x17” films per week?

Answer 11

An automatic processor?

Question 12

What is the usual recommended optimal developing temperature for manual processing?

Answer 12

68 degrees

Question 13

Which fluid requires the most replenishing in manual processing?

Answer 13

Developer fluid.

Question 14

What are densitometry and sensitometry primarily used for?

Answer 14

To monitor processor function.

Question 15

In which step of processing does a “kissing” artifact occur?

Answer 15

Developing.

Question 16

Of the choices below, how could you best see the L5-S1 disc space and sacrum on and AP film?

a. use 45 degree rotation
b. use a cephalic tilt
c. use a caudal tilt
d. use the central ray perpendicular to the film

Answer 16

b. use a cephalic tilt.

Question 17

Of the lung, liver, perineal fat and fundus of the stomach, which one is the most dense?

Answer 17

Liver

Question 18

A contrast between the patient densities of air and water explains why we see which of the following?

a. epiglottis
b. psoas muscle
c. urinary bladder
d. thyroid cartilage

Answer 18

Urinary bladder.

Question 19

What does the formula “5 (N-18) rems” refer to?

Answer 19

Occupational exposure M.P.D for radiation.

Question 20

Of the following, which relates a dosiometer?

a. measuring the density of a film
b. testing developer strength
c. a gonad shield
d. a film badge

Answer 20

d. film badge.

Question 21

What should you check when constructing an x-ray facility to make sure you are up to code with lead lining?

Answer 21

your local state requirements.

Question 22

In inches, a secondary barrier needs to have how much lead equivalency?

Answer 22

1/32

Question 23

In inches, a primary barrier needs to have how much lead equivalency?

Answer 23

1/16

Question 24

What is the whole body occupational dose limit for x-ray?

Answer 24

if should not exceed 5 rems per year for whole body