Lecture 2

Question 1

What kind of image is this

Answer 1

CT scan

Question 2

What kind of image is this

Answer 2

X-Ray

Question 3

What are the transmission type images

Answer 3

X-Ray, CT

Question 4

What is the emission type

Answer 4

MRI

Question 5

What is the reflective type of image

Answer 5

Ultrasound

Question 6

What is this picture from

Answer 6

MRI

Question 7

What kind of image is this

Answer 7

Ultrasound

Question 8

Bright white bone is seen in what 2 kinds of images

Answer 8

Ct, X-Ray

Question 9

What kind of image gives the most detail on soft tissue

Answer 9

MRI

Question 10

On an MRI bone is _____

Answer 10

Dark

Question 11

What may be used for transmission type to aid visual imagery

Answer 11

Contrast

Question 12

What does using contrast do with X-Rays & CT’s?

Answer 12

Improves images of hollow spaces

Question 13

Transmission types are what

Answer 13

Beams of high-energy photons that are transmitted through body structure

Question 14

In an X-Ray density differences are seen as

Answer 14

Shades of gray

Question 15

In an X-Ray & CT-higher density is seen as what color

Answer 15

White

Question 16

In an X-Ray & CT- lower density (radio-translucent) is seen as what color

Answer 16

Black

Question 17

A CT density is measured on what scale

Answer 17

Hounsfield scale

Question 18

How does an MRI work

Answer 18

Energy of hydrogen protons in a strong magnetic field gets detected

Question 19

Modality?
View?

Answer 19

CT, Axial

Question 20

Modality?
View?

Answer 20

CT, coronal

Question 21

Modality?

Answer 21

X-Ray

Question 22

What is angiography

Answer 22

Imaging of vasculature

Question 23

How do you achieve angiography

Answer 23

With transmission OR emission techniques

Question 24

What is an arteriogram

Answer 24

Angiography of arteries

Question 25

How do you get a standard angiogram

Answer 25

X-Ray

Question 26

What determines the image seen on an ultrasound screen

Answer 26

Echogenicity of tissue

Question 27

What is echogenicity in ultrasounds

Answer 27

The amount of ultrasound reflection by a tissue (relative to surrounding tissues)

Question 28

What is the color scale of ultrasounds

Answer 28

Scale from white- black

Question 29

What type of tissue is bright white on an ultrasound

Answer 29

(dense/stiff objects) -Bone, dense connective tissue, fat

Question 30

Bright white is considered what on an ultrasound

Answer 30

Hyperechoic

Question 31

Medium gray is considered what on an ultrasound

Answer 31

Isoechoic

Question 32

What tissues are considered isoechoic on an ultrasound

Answer 32

Average density /stiffness- liver/spleen

Question 33

Dark gray is considered what on an ultrasound

Answer 33

Hypoechoic

Question 34

What tissues are considered hypoechoic on an ultrasound

Answer 34

Low density/ stiffness- nerves, skeletal muscle, kidney cortex

Question 35

Black is considered what on an ultrasound

Answer 35

Anechoic

Question 36

Anechoic is indicative of what kind of structures

Answer 36

Fluid filled structures (shadows)- Vessels, csts, bladder

Question 37

Name 3 kinds of ultrasound probes

Answer 37

Linear array probe, curved array probe, phased array probe

Question 38

What is the high frequency array probe

Answer 38

Linear array probe

Question 39

2 characteristics of a high frequency array probe

Answer 39

Good image detail, poor penetration

Question 40

Linear array probes are used for what kind of exams

Answer 40

Shallow (just below skin surface)

Question 41

Name 4 exams a linear array probe is used for

Answer 41

Ocular, carotid, carpal tunnel, MSK

Question 42

What are the 2 kinds of low frequency array probes

Answer 42

Curved (curvilinear) and phased array probe

Question 43

Low frequency transducers are good for what

Answer 43

Modest image detail, good penetration

Question 44

Curved (curvilinear) array probes are used for what kind of exams

Answer 44

Abdominal exams (liver, gallbladder, kidney)

Question 45

Phased array probes are used for what kind of exams & what are examples

Answer 45

Intercostal exams- Heart/ lungs