Ultrasounds

Question 1

is a mechanical wave propagated through a medium at a high frequency to produce images of structures within the human body

Answer 1

Ultrasound

Question 2

Is a phenomenon where distortion of a crystal causes an electrical change

Answer 2

Piezoelectric effect

Question 3

How are ultrasound waves generated?

Answer 3

By the application of electrical current to piezoelectric crystals in the transducer

Question 4

Higher frequency probes are used to give high resolution images of?

Answer 4

Shallow structures

Question 5

The lower frequency probes are used for?

Answer 5

Deep abdominal imaging

Question 6

Black images on an ultrasound indicate

Answer 6

Air and fluid

Question 7

What is always a shade of grey on ultrasounds?

Answer 7

Tissue

Question 8

The denser the tissue the?

Answer 8

The brighter white it will appear

Question 9

Is an operating mode in which a two dimensional image is generated that portrays moving reflectors in color simultaneously with images

Answer 9

Color flow Doppler

Question 10

Term: regulates the amplification ( brightness) of returning echoes to compensate for loss of transmitted sound caused by absorption and reflection

Answer 10

Gain

Question 11

A relative term that refers to the echoes returned from a structure. And referred to a lesion or tumor which produces a stronger echo than the surrounding structures or tissues

Answer 11

Hyperechoic

Question 12

Refers to structures that contain fewer or weaker echoes than surrounding tissues

Answer 12

Hypoechoic

Question 13

Ability to distinguish between two adjacent structures

Answer 13

Resolution

Question 14

Color doppler: assign colors to represent the flow away or towards the probe. Often used to determine blood flow. What colors are shown when going towards or away from the probe? BART

Answer 14

Blue ( away)

Red ( towards)

Question 15

Is an electromechanical device that is part of the ultrasound system. It touchs the patient and converts electrical energy into mechanical energy

Answer 15

Transducer

Question 16

What are the three main types of probes

Answer 16

Curvilinear
Linear
Phased array probe

Question 17

Probe for abdominal and obstetrics

Answer 17

Curvilinear

Question 18

Probe used for soft tissue and small parts imaging

Answer 18

Linear probes

Question 19

Use computer control to “ bend” the US beam from flat, small footprint to a wider pie-shaped wedge distally

Answer 19

Phased array probes

Question 20

What is the purpose of conducting gel?

Answer 20

To eliminate air between probe and skin

Question 21

What are the ultrasound views

Answer 21

Sub-xyphoid and left parasternal

Question 22

In the sub-xyphoid view the displayed screen should show the following?

Answer 22

Portion of the liver at the top
In order:
R ventricle
Intraventricular Septum 
Left ventricle

Question 23

Placement for the left parasternal view

Answer 23

Left of sternum
5th intercostal space
Probe marker to the patient’s right

Question 24

What should visualized in the left parasternal view

Answer 24

Pericardium
Right ventricle
Interventricular septum
Left ventricle