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Diagnostic Sonography > Knobology > Flashcards

Knobology Flashcards

1
Q

Determines the strength of the pulse transmitted into the body. Displayed in dB brighter image with stronger pulse.

A

Power Output

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2
Q

Amplies or boosts the echo signals is done to compensate for attenuation of sound in deeper tissues.

A

Gain

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3
Q

Amplifies receiver gain gradually at specific depths. Depth of interface is determined by the amount of time it takes for transmitted sound pulse to return to the transducer.

A

TGC

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4
Q

Allows transducer to focus transmitted sound at different depths. Several focal zones reduce the frame rate.

A

Focal Zone

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5
Q

Fraunhofer zone

A

far zone

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6
Q

Frensel zone

A

near zone

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7
Q

Adjusts the depth and width of an image. Larger or deeper field of view causes frame rate to decrease. Depth is in cm width may be used to reduce side lobe artifacts.

A

Field of view

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8
Q

Eliminates both electronic noise and low level echoes from the display. Done internally in the computer.

A

Reject

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9
Q

Range of input signal levels produces noticeable changes in the output of the device.

A

Dynamic Range

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10
Q

Produces high contrast

A

Low dynamic range

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11
Q

Produces more shades of gray and lower contrast

A

High dynamic range

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12
Q

Zoom to increase detail

A

Zoom

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13
Q

Captures image, must be without motion, patient holding breath

A

Freeze

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14
Q

Increase PRF decrease PRF

A

Depth

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15
Q

Color box used, you determine angle of the box.

A

CF Color Flow Doppler

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16
Q

Cursor and sample volume used, gate (size of sample volume) angle

A

PW Pulsed wave Doppler

17
Q

Blind, no image positive/negative flow by sound

A

CW Continous wave Doppler

18
Q

Divides image into two screens, rt and lt, you scan placement

A

L R (Dual Screen)

19
Q

Calipers used to measure distance, velocity resistivity indexes

A

Measure

20
Q

Used for labeling each image, text typing

A

Comments

21
Q

“Sets” caliper so additional caliper can be activated for measurements

A

Set

22
Q

Can narrow field of view, increases PRF increases image quality

A

Scan Area

23
Q

Moves calipers color box sample volume/ cursor, controls zoom box size

A

Track ball

24
Q

Sends sound waves at a certain speed and receives double that amount back

A

Harmonics

25
Q

Characterature of the body used on image page for location instead of text

A

Body pattern

26
Q

Used to measure circular objects HC and AC

A

Ellipse

27
Q

M mode and Doppler cursor

A

M/D cursor

28
Q

Controls number of and position of focal zones

A

Focal zone/Depth

29
Q

Decibles gray scale control increased dB = increased grayscale and vice versa

A

dB

30
Q

Programmed soft touch keys

A

Annotations

31
Q

Start of new exam new patient enter pt info here

A

PT ID

32
Q

Deletes entire word at a time

A

Word delete

Diagnostic Sonography (13 decks)

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