Intro Lecture

Question 1

A joint spaces or ancillary spaces refers to what aspect of image interpretation?

Answer 1

Cartilage

Question 2

Bone spurs reps what?

Answer 2

degeneration of disc

Question 3

Calcification adds ___ to the plain film.

Answer 3

density

Question 4

The plain film x-ray is very specific form to view or identify bone tumors. True or False

Answer 4

True. In most cases its all that’s needed.

Question 5

How many views is considered a complex exam?

Answer 5

two views, A-P and Lateral

Question 6

Name Bone characteristics (imaging find) that can be seen on plain film.

Answer 6

legion Longer than it is wide
ground glass matrix mineralization
well defined margination w/thin sclerotic
An ex of Fiberous dysplasia

Question 7

Name Bone characteristics (imaging find) that can be seen on plain film.

Answer 7

Flocculent 
small arcs and small rings = presence of cartilage (more Lucent)
thin cortex
ballooning of bone
An ex of Enchondroma

Question 8

Conventional Tomography is not used anymore but has been replaced by what 2 types of imaging?

Answer 8

CT (computed tomography) or MRI

Question 9

What determines the tomographic arc on conventional tomography?

Answer 9

slice thickness, the longer the arc the thinner the slice

Question 10

Tomography is going to have blurs above and below target area allowing one to clearly see what?

Answer 10

fx, bone lesions

Question 11

Computed tomography aka is

Answer 11

CT or CAT scan

Question 12

What is the purpose of CT/CAT scan?

Answer 12

makes Stacks of images (deck of cards) per single exam.

Question 13

What form of examination is used to obtain imaging in the axial plane? Why?

Answer 13

CT computed Tomography

1. provides excellent spatial relationships
2. show 3D multiplanar
3. based on Tissue attenuation by ionizing radiation

Question 14

What is the lowest attention or lowest density on film?

Answer 14

Air

Question 15

Name the CT components.

Answer 15

scanning gantry (tube + sensors/detectors)
table slides in/out
x-ray generator
data processing unit

Question 16

The tube of CT is the same as what other type of imaging?

Answer 16

x-ray/plain film

Question 17

The CT tube rotates within the gantry while the table translates ___ thus creating a “spiral” path through the patient

Answer 17

linearly

Question 18

Slice thickness should be ___ or less. The thinner the slice the better view.

Answer 18

~5 mm

Question 19

A single CT exam contains many slices and can be manipulated to create various what?

Answer 19

windows

Question 20

If a pt has fx on plain film x-ray what is the next step and why?

Answer 20

CT b/c it shows spacial relationships of anatomy

Question 21

What is the go to for spinal cord and soft tissue eval?

Answer 21

MRI

Question 22

CT looks just like what other type of imaging? Tip, check the cortex to tell the difference between the two.

Answer 22

x-ray

if you can see a radiolucent points on the film then its likely to be a CT instead of x-ray

Question 23

Concerning CT, the purpose of the scout image is to

Answer 23

show the location in the body where the stack of images were obtained

Question 24

“Taking an x-ray” would result in the production of a(n):

Answer 24

Radiograph

Question 25

What imaging procedure is used most often in the initial assessment of bone and joint disorders?

Answer 25

Conventional radiography

Question 26

What search pattern is recommended for evaluating conventional radiographs?

Answer 26

The ABCS approach