Ch. 1 + 2 Questions (Tempkin) Flashcards

1
Q

Structures are accurately identified on ultrasound images by

A

their location

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2
Q

Organ parenchyma is described in terms of

A

echo texture

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3
Q

When an organ is described as hypoechoic to another organ it means the hypoechoic organ appears

A

less echogenic relative to the other

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4
Q

Degrees of echogenicity depend on

A

a structure’s density, distance from the sound beam, and them angle at which the beam strikes it

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5
Q

For a structure to exhibit acoustic enhancement it must

A

be fluid filled

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6
Q

Structures that cast a shadow

A

either reflect or attenuate the sound beam

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7
Q

The sonographic appearance of the kidneys is described as heterogeneous. Renal cortex, however, is described as

A

homogeneous

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8
Q

The sonographic appearance of the gastrointestinal tract lumen

A

is dependent on its contents

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9
Q

Documented areas of interest

A

must be represented in at least two scanning planes

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10
Q

If a patient asks a sonographer questions regarding their study, the sonographer should

A

explain to the patient that they will have to wait for the physician’s diagnosis

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11
Q

If the liver appears isosonic compared to the right kidney, it is described as

A

having the same echogenicity

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12
Q

If the spleen is described as having uniform composition throughout, it appears

A

homogeneous

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13
Q

If the pancreas appears hyperechoic compared to the liver, it is described as

A

appearing brighter

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14
Q

A scanning survey is

A

a detailed inclusive observation

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15
Q

Abnormal findings/pathology should be described according to

A

echo pattern, size, origin, number, composition, and any complications associated with adjacent structures

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16
Q

Coronal planes divide the body into unequal _____ and _____ sections

A

anterior; posterior

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17
Q

When scanning in a coronal plane, the ultrasound beam enters the body from

A

either a right or left lateral direction

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18
Q

Transverse planes divide the body into unequal _____ and _____ sections

A

superior; inferior

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19
Q

When scanning in a transverse plane, the ultrasound beam enters the body from

A

either an anterior, posterior, right lateral, or left lateral direction

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20
Q

Sagittal planes divide the body into unequal _____ and _____ sections

A

right; left

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21
Q

When scanning in a sagittal plane, the ultrasound beam enters the body from

A

either an anterior or posterior direction

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22
Q

Scanning planes are _____ dimensional

A

two

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23
Q

The anatomic area(s) not seen in a coronal plane

A

are anterior and posterior

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24
Q

The anatomic area(s) not seen in a transverse plane

A

are superior and inferior

25
The anatomic area(s) not seen in a sagittal plane
is lateral
26
Scanning planes are often obliqued (by very slightly twisting the transducer). The degree of the oblique is determined by
how the structure of interest lies in the body
27
The oblique scanning plane affords visualization of the
greatest margins of structures
28
The _____ of the structure being imaged ultimately determines which transducer should be used
depth
29
When scanning, every effort should be made to position the area(s) of interest in the transducer's _____ _____ to obtain the best images
focal zone
30
soundwaves don't penetrate through
air
31
thoracentesis
removing fluid from chest
32
paracentesis
removing fluid from abdomen
33
Describe organ parenchyma
homogeneous, ranges in echogenicity
34
Describe muscle
slightly echogenic linear striations, hypoechoic compared to most solid body structures
35
Describe placenta
Varies throughout pregnancy. Homogeneous echo texture with moderate to high echogenicity by vascular components, giving the placenta a heterogeneous appearance
36
Describe Tissue
Homogeneous echo texture with moderate echogenicity and strongly reflective borders
37
Describe fluid-filled structures
anechoic lumens and walls are highly echogenic. They exhibit acoustic enhancement or through transmission.
38
Bowel wall is composed of _____ layers
5
39
First, third, and fifth layers of bowel wall appear _____
hyperechoic
40
Air and gas
prevent through transmission, creating a shadow
41
Crura of the diaphragm may appear _____ to adjacent structures
hypoechoic
42
Know standard patient positions!
(Pg. 7 in book)
43
Imaging Criteria
Adjust field size, focus near and far gain settings, set contrast, adjust gain settings, adjust time-gain compensation (TGC)
44
Sagittal planes
anterior, posterior, superior, inferior
45
Transverse planes - beam entering from an anterior or posterior direction
anterior, posterior, right lateral, left lateral
46
Transverse planes - beam entering from a right or left lateral direction
lateral (right or left), medial, anterior, posterior
47
Coronal planes
lateral (right or left), medial, superior, inferior
48
Low frequency transducers have
most penetration
49
High frequency transducers have
less penetration
50
Curved array transducer
Typically used for abdomial, obstetric and gynecological imaging
51
Sector array transducer
Generally used for intercostal scanning
52
Linear array transducer
Typically used for small or superficial structures and extremity Doppler
53
Endocavital transducer
Used for endovaginal and endorectal imaging
54
TEE (transducer)
Used for transesophageal echocardiography
55
Hockey stick transducer
Used for intraoperative imaging
56
3D transducer
Used for three dimensional imaging
57
All transducers have a ______ ______
focal zone
58
The pancreas lies from right to left, across the body, at a slight angle; therefore its long axis is seen in a _____ _____ scanning plane
transverse oblique
59
Typical measurements are calculated in volumes based on
L x W x AP = Volume | AP is the Anterior Posterior dimension