Module 3 Flashcards

(33 cards)

1
Q

Scanning planes

A
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2
Q

Ascites

A

Accumulation of serous fluid anywhere in the abdominopelvic cavity.

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3
Q

Hypoechoic

A

Not as bright as the surrounding tissue

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4
Q

Echoegenic

A

Ability to produce bright white echoes

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5
Q

What is enhancement

A

TGCs

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6
Q

Why do structures shadow

A

Wave is ending or terminating

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7
Q

Focal organ disease

A

Describe changes to the organ in the same manner as diffuse, but including the area of change.

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8
Q

Diffuse organ disease

A

Describe changes to normal organ size, echogenicity, vascularity, boarders, and effect on surrounding structures.

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9
Q

Normal aorta sizes

A

Less than 3

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10
Q

Acoustic shadows

A

“Reduced echo amplitude” or echo “drop off” posterior to a structure that attenuates the sound beam.

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11
Q

Cyst

A

Anechoic, enhancement, smooth walls.

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12
Q

Sludge

A

Gravity dependent low level echos seen in the gallbladder lumen.

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13
Q

Gallstone

A

Echogenic focus within gallbladder lumen, posterior acoustic shadowing, gravity dependent movement seen with the change of patient position.

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14
Q

Ultrasound

A

Above human range of hearing; above 20,000 Hz or 20 KHz

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15
Q

Hyperechoic

A

brighter than surrounding tissue

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16
Q

Homogeneous

A

of the same, uniform composition (the liver)

17
Q

Heterogeneous

A

not uniform; of different composition

18
Q

Isoechoic

A

same echogenicity as the surrounding tissue

19
Q

Interface

A

strong reflectors that delineate the boundary of organs

20
Q

Anechoic

A

wthout internal echoes (black)

21
Q

Texture

A

internal echo pattern of an organ or tissue

22
Q

Cystic

A

Anechoic, well circumscribed, enhancement, fluid filled

23
Q

Septated

A

echogenic lines within a cystic structure

24
Q

Parenchyma

A

type of tissue

25
Cystic structure
* Anechoic * Regular boarders; smooth walls * Well defined back wall * Posterior enhancement o an increase in the amplitude of echoes located behind a weakly attenuating structure
26
Solid (tumor) structures
* Hypo to hyperechoic * Irregular boarders * Poorly defined back wall * Poor enhancement to acoustic shadowing
27
Complex structures
Cystic complex: multiple septations; dependent debris, solid elements Solid complex: areas of liquification in a solid tumor due to necrosis or hemorrhage
28
Acoustic Windows
* A window allows sonographers to see structures and organs more clearly * Largest abdominal window is the liver * Largest pelvic window is a full urinary bladder
29
Acoustic Shadow
* Opposite of acoustic window * Occurs when an object does not allow sound to penetrate through * Bones, stones, and bowel gas cause shadows * Can be described as “clean” or “dirty”
30
NPO-6-8 hours before the study:
GB, Pancreas, CBD, AO
31
Drink 24 to 32 ounces of water
finish drinking 45 minutes to 1 hour before the exam and do not void-pelvic exam
32
No prep
liver, spleen, kidneys, thyroid, testes or scrotum, breast extremities and carotids.
33
Tortuous
curvy or twisting