Chapter 1

Question 1

Image Receptor

Answer 1

The device that receives the energy of the x-ray beam and forms the image of the body part

Question 2

4 Types of Image Receptors

Answer 2

1. Cassette with Film
2. Photostimulable Storage Phosphor Image Plate (PSP IP)
3. Solid State Digital Detectors (Digital Radiography/DR)
4. Fluoroscopic Image Receptor

Question 3

Superimposition

Answer 3

The relationship of an atomic superimposition to size, shape, position, and angulation

Question 4

Adjacent Structures

Answer 4

Each anatomic structure must be compared with adjacent structures and reviewed to ensure the structure is present and properly shown

Question 5

Optical Density (OD)

Answer 5

Defined as the degree of blackening and brightness displayed on a digital display monitor

Question 6

Density shows as

Answer 6

Blackening

Question 7

Contrast

Answer 7

The difference in density between any two areas on a radiograph

Question 8

Low contrast images displays…

Answer 8

Many density levels

Question 9

High contrast images display…

Answer 9

Few density levels

Question 10

Magnification

Answer 10

Anatomy on a radiograph always appears larger than its actual size so no other structure other than skin can be in contact with the IR

Question 11

Object-to-Image Receptor distance (OID)

Answer 11

How far the body part is from the IR

Question 12

Source-to-Image Receptor distance (SID)

Answer 12

How far the x ray tube is from the IR

Question 13

Magnification increases with increased _____ and decreased _____

Answer 13

Increased OID

Decreased SID

Question 14

Anatomic Position on Radiographs

Answer 14

Oriented on the display device this way. In this manner, the patient’s left side is on the viewer’s right side and vice versa.

Question 15

PA Projection

Answer 15

Patient’s anterior (front) chest is placed closest to the IR

Question 16

AP Projection

Answer 16

Patient’s posterior (back) placed closest to the IR

Question 17

Exceptions to Anatomic Position in radiographs

Answer 17

Hands, fingers, wrists, feet, and toes

Question 18

Lateral Radiographs

Answer 18

Patient’s right or left side placed against the IR. Hands up

Question 19

Voluntary Breathing

Answer 19

Skeletal muscles. Controlled by CNS. These muscles perform the movement of the body initiated by the individual. Examples include nervousness, discomfort, mental illness, excitability, fear, age, and breathing

Question 20

Involuntary Breathing

Answer 20

Organ muscles controlled by the autonomic nervous system and muscles contract rhythmically. Involuntary motion caused by heart pulsation, chill, peristalsis, tremor, spasm, and pain

Question 21

All Radiographs must include:

Answer 21

Date

Patient’s Name or Identification #

Right or Left Marker

Institution Identity

Patient’s Age or DOB

Time of Day

Name of Physician

Position of Patient