Imaging Basics

Question 1

Reference Position

Answer 1

Anatomical Position

Question 2

Patient laying down terms

Answer 2

prone, recumbent, trendelenburg

Question 3

Upright terms

Answer 3

seated or standing

Question 4

Erect Term

Answer 4

weight bearing

Question 5

Body Parts Closest to Image Receptor

Answer 5

spine images- spine
chest images- heart/lungs

Question 6

Decubitus

Answer 6

-body on horizontal surface
-horizontal x-ray
-detects air fluid levels and free air

Question 7

X-ray Beam Projection Path

Answer 7

PA/AP and lateral
joints- AP

Question 8

Exceptions to X-ray beam path

Answer 8

hand and foot

Question 9

Minimum Image ordering

Answer 9

2 images at right angles

Question 10

Why to order 2 images

Answer 10

-information about dimensions
-locates lesions and foreign bodies
-determines fracture alignment

Question 11

How to view an X-Ray

Answer 11

-view from either side
-line up patient facing you (doesn’t matter if taken PA or AP)
-lateral view: line as clinician is x-ray tube

Question 12

Exceptions to viewing an X-ray

Answer 12

hand and feet- view as limb hanging in anatomical position

Question 13

Identification Markers

Answer 13

-patient info
-R/L
-radiology tech initials
still view in anatomical

Question 14

INT/EXT Abbreviations

Answer 14

-internal rotation
-external rotation

Question 15

WTB/Erect/Stand Abbreviations

Answer 15

weight bearing or erect

Question 16

DECUB Abbreviation

Answer 16

decubitus or recumbent
laying on horizontal surface

Question 17

INSP/EXP Abbreviations

Answer 17

inspiration or expiration

Question 18

Density Meaning

Answer 18

blackness on radiograph

Question 19

Contrast Goal and WhatisitAffected By

Answer 19

goal- anatomical detail more visible
affected by- peak kilovoltage time

Question 20

Detail Means..

Answer 20

geometric sharpness

Question 21

Distortion

Answer 21

distance between source, patient, and image receptor
-closer to receptor had less distortion
-from unequal magnification

Question 22

Common Practice Distance

Answer 22

40” between beam source and image receptor

Question 23

Interpretation/Outcome of Imaging (5)

Answer 23

1. positive for diagnosis
2. negative for suspected diagnosis
3. negative for diagnosis but suspicion for another diagnosis
4. inconclusive- requiring more imaging to confirm
5. wrong

Question 24

Search Pattern

Answer 24

method for visually searching an image

Question 25

Reducing Errors

Answer 25

communication give radiologist the expertise in our own area of practice collaborate

Question 26

Observation Error

Answer 26

incomplete or faulty search pattern

Question 27

Interpretation Error

Answer 27

failure to link abnormal radiograph to pathology

Question 28

ABCS of imaging

Answer 28

alignment bone cartilage soft tissue

Question 29

Alignment Category

Answer 29

general skeleton architecture contour of bones alignment relative to other bones

Question 30

Bone Density Category

Answer 30

general density texture abnormality local density changes

Question 31

Cartilage Category

Answer 31

epiphyseal plates joint space width subchondral space

Question 32

Soft Tissue Category

Answer 32

periosteum muscles fat pads and lines joint capsules miscellaneous soft tissue findings