day 1

Question 1

form of energy which causes vibraion of molecules within a medium

Answer 1

sound

Question 2

2 types of UTZ Waves

Answer 2

1. longitudinal or compression waves
2. transverse waves or shear waves

Question 3

Above 20,000 Hz
or Above 20 kHz

Answer 3

Ultrasound

Question 4

16 Hz to 20,000 Hz
or 16 Hz to 20 kHz

Answer 4

Audible Sound

Question 5

Below 16 Hz

Answer 5

Infra Sound`

Question 6

phase of wave when the molecules are pushed together

Answer 6

compression

Question 7

phase of wave when the molecules are apart

Answer 7

rarefaction

Question 8

sound that is higher in pitch than the range of human
hearing

Answer 8

ultrasound

Question 9

to write

Answer 9

graphein

Question 10

sound

Answer 10

sonus

Question 11

not a passive push-button activity; rather, it is an interactive process that involves a sonographer, a patient, an ultrasound transducer, an instrument, and a sonologist.

Answer 11

ultrasound imaging

Question 12

Medical imaging with ultrasound is called

Answer 12

sonography

Question 13

reproduction, representation, or imitation of the physical form of a person or object

Answer 13

image

Question 14

Pulses of ultrasound generated by a
transducer are sent into the patient where they produce echoes at organ boundaries and within
tissues

Answer 14

pulse echo technique

Question 15

generates the ultrasound pulses and receives the returning
echoes

Answer 15

transducer

Question 16

brightness of each dot corresponds to the echo strength,
producing what is known as a

Answer 16

gray-scale image

Question 17

rectangular display resulting from this procedure often is called ___ or ___, referring to the linear-array transducer that is used to produce it

Answer 17

linear scan, or linear image

Question 18

second approach to sending ultrasound pulses through the
anatomy to be Imaged. With this method, each pulse originates from the same starting point, but subsequent pulses go out in slightly different directions. This approach
results in a ____ or ____, which has a
shape similar to a slice of pie

Answer 18

sector scan, or sector image

Question 19

Sonographic scan formats commonly are limited to three
types:

Answer 19

(1) linear, (2) sector, and (3) a combination of the two

Question 20

clinical cross-sectional gray-scale
sonographic images produced are
sometimes called

Answer 20

B scans

Question 21

2D imaging, while still being used extensively, has been extended to 3D scanning and imaging, also called _____, method requires scanning the ultrasound through many adjacent 2D tissue
a loaf of sliced bread

Answer 21

volume imaging

Question 22

Echoes produced by moving objects have frequencies that are different from the pulses sent into the body. This phenomenon is called ___, which is put to use in detecting and
measuring tissue motion and blood flow

Answer 22

Doppler effect

Question 23

Doppler effect

Answer 23

Christian Andreas Doppler