14 reverse

Question 1

Converts electrical to acoustic energy (transmission) Converts acoustic to electrical energy (reception)

Answer 1

Transducer

Question 2

Communicates organizes and times the functions

Answer 2

Master Synchronizer

Question 3

determines the amplitude, PRP, and PRF occurs during transmission creates and controls electrical signal sent to transducer

Answer 3

Pulser

Question 4

determines the firing, delay patterns for phased array system

Answer 4

Beam Former

Question 5

transform electrical signals from the transducer into a form suitable for display

Answer 5

Receiver

Question 6

Monitor

Answer 6

Display

Question 7

archives the ultrasound studies storage devices include: computer hard drives, CD, DVD, videotape, magneto-optical discs, paper printouts, photographs, and USB

Answer 7

Storage

Question 8

effects entire image use during transmission can cause exposure/ bioeffects Adjustable

Answer 8

Transducer output

Question 9

output gain, acoustic power, pulser power, energy output, transmitter output, power or gain

Answer 9

Transducer Synonyms

Question 10

random and persistent disturbance that obscures or reduces a signal’s clarity

Answer 10

Noise

Question 11

signal is much stronger than the noise and the image is a high quality

Answer 11

Signal to Noise when high

Question 12

degrades image strength is closer to strength of the noise

Answer 12

Signal to Noise when low

Question 13

comparison of the meaningful info (signal) to the amount of contamination (noise)

Answer 13

Signal to Noise

Question 14

increase

Answer 14

increase output power, signal to noise ratio ______.

Question 15

inversely

Answer 15

PRP and PRF are what related

Question 16

Yes

Answer 16

Is PRP adjustable

Question 17

shorter listening time shorter PRP higher PRF

Answer 17

Shallow Imaging listening time PRP PRF

Question 18

longer listening time longer PRP lower PRF

Answer 18

Deep Imaging listening time PRP PRF

Question 19

adjust electrical spikes voltage to reduce love artifacts

Answer 19

Apodization

Question 20

1. Amplification 2. Compensation 3. Compression 4. Demodulation 5. Reject

Answer 20

Order of Receiver Operations

Question 21

adjustable all signals trated identically entire image gets brighter or darker

Answer 21

Amplification adjustable? singals processed Effects on image

Question 22

adjustble signals treated differently based on reflector depth image will be uniformly bright from top to bottom

Answer 22

Compensation adjustable? singals processed Effects on image

Question 23

adjustable signals treated differently depending on strength changes gray scale mapping

Answer 23

Compression adjustable? singals processed Effects on image

Question 24

not adjustable prepares electrical signals to be suitable for display none

Answer 24

Demodulation adjustable? singals processed Effects on image

Question 25

adjustable only weak signals affects; strong signals remain unchanged weal echoes appear or are eliminated from image

Answer 25

Reject adjustable? singals processed Effects on image

Question 26

uses damping material to create short pulses, which provides better axial resolution use only high frequencies

Answer 26

Dynamic Frequency Tuning

Question 27

As Low As Reasonably Achievable minimizes the patients ultrasound exposure

Answer 27

ALARA

Question 28

changes brightness of entire image alters signal to noise ratio alters patient exposure bioeffect concerns decrease this first if image is too bright

Answer 28

Output Power vs Receiver Gain Output Power

Question 29

changes brightness of entire image doesn’t affect signal to noise ratio doesn’t change patient exposure no bio effect concern increase this first if image is too dark

Answer 29

Output Power vs Receiver Gain Receiver Gain