Exam 1 - Basics of 2D Echo

0.0(0)
Studied by 1 person
call kaiCall Kai
Locked
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/28

encourage image

There's no tags or description

Looks like no tags are added yet.

Last updated 1:38 PM on 9/9/26
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai
Chat

No analytics yet

Send a link to your students to track their progress

29 Terms

1
New cards

Components of Ultrasound Machine

Ultrasound unit

Transducer

2
New cards

Ultrasound Unit

Computer

Converts forms of electrical energy to digital energy

Translates binary information into images

Stores information

3
New cards

Trasnucer

Takes in electrical energy that reacts with a piezoelectric crystal that converts it to sound energy that is reflected against bodily tissues back to the transducer that gets processed into an image

4
New cards

Sector Transducer

Used for trasnthoracic echo.

<p>Used for trasnthoracic echo.</p>
5
New cards

Image Shape of Sector Transducer

Pie-shaped

<p>Pie-shaped</p>
6
New cards

TEE Transducer

Used for transesophageal echo.

<p>Used for transesophageal echo.</p>
7
New cards

Frequency

Number of cycles/second

<p>Number of cycles/second</p>
8
New cards

Field of View

Width and depth of image

Affects frame rate

<p>Width and depth of image</p><p>Affects frame rate</p>
9
New cards

Focus

Area where resolution is best

Can be adjusted to different depths

<p>Area where resolution is best</p><p>Can be adjusted to different depths</p>
10
New cards

Gain

Increases/decreases amplitude of entire image

<p>Increases/decreases amplitude of entire image</p>
11
New cards

TGC

Increases/decreases amplitude at specific depths

<p>Increases/decreases amplitude at specific depths</p>
12
New cards

Zoom

Magnifies area of interest

<p>Magnifies area of interest</p>
13
New cards

Dynamic Range

Increased = more gray

Decreased = black/white

<p>Increased = more gray</p><p>Decreased = black/white</p>
14
New cards

B-Color

Brightness color

Colorizes gray-scale image

<p>Brightness color</p><p>Colorizes gray-scale image</p>
15
New cards

Reject

Filter to get rid of lower-level echos

Can improve resolution

<p>Filter to get rid of lower-level echos</p><p>Can improve resolution</p>
16
New cards

Attenuation

Loss of energy due to absorption, reflection, diffraction

Enhancement/shadowing

17
New cards

Enhancement

knowt flashcard image
18
New cards

Shadowing

knowt flashcard image
19
New cards

Beam Dimension

Beamwidth

Slice thickness

Sidelobe & grating lobe

20
New cards

Sidelobe

Extra beams of sound energy outside main ultrasound beam that result in extra echoes

<p>Extra beams of sound energy outside main ultrasound beam that result in extra echoes</p>
21
New cards

Depth of Origin

Propagation speed

Range ambiguity

22
New cards

Beam Path

Reverberation

Refraction

Mirror-image

23
New cards

Reverberation

Bouncing of sound energy between structures resulting in multiple reflections appearing on the image

<p>Bouncing of sound energy between structures resulting in multiple reflections appearing on the image</p>
24
New cards

Mirror-Image

A duplication of structure(s) on the image due to sound bouncing between structures

<p>A duplication of structure(s) on the image due to sound bouncing between structures</p>
25
New cards

How to eliminate sound artifacts

Move transducer

Adjust gain/TGC

Decrease power

26
New cards

Artifacts must be disproven by...

Imaging in multiple angles - otherwise can be mistaken for pathology

27
New cards

How to achieve ALARA

Use lowest power possible

Limit time exposure

28
New cards

Thermal Bioeffects

Heating tissues

29
New cards

Mechanical Bioeffects

Cavitation

Micro-steaming - high velocity fluid movement

Radiation force