Introduction to Scanning and Ultrasound Flashcards

1
Q

Which anatomic plane splits the body into right and left sides?

A

Sagittal

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2
Q

Which anatomic plane divides the body into superior and inferior portions?

A

Transverse

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3
Q

Which anatomic plane divides the body into anterior and posterior portions?

A

Coronal

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4
Q

In the sagittal scanning plane, what portion of the patient is on the right side of the monitor? On the left side?

A

Inferior; Superior

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5
Q

In the transverse scanning plane, the patient’s right is located where on the monitor?

A

Left side of the monitor

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6
Q

In the coronal plane, the lateral portion of the patient is located where on the monitor?

A

top of the monitor

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7
Q

Diagnostic ultrasound uses frequencies above ___________.

A

1 MHz; 1,000,000 Hz

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8
Q

Describe the appearance of an anechoic structure.

A
  • Well defined borders
  • no internal echoes
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9
Q

If a structure is anechoic, the structure is _____________ and transmits sound ________.

A

Fluid-filled; easily

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10
Q

An echogenic structure appears ____________, because it ___________.

A

Brighter; produces high level echoes

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11
Q

An echopenic structure appears __________ because it __________.

A

Darker (dark grey); produces low level echoes

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12
Q

A structure is considered __________ when it is similar in echogenicity to surrounding tissue.

A

isoechoic

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13
Q

When comparing an echogenic structure to an echopenic structure, you would say it is __________ compared to that structure.

A

Hyperechoic

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14
Q

When comparing an echopenic structure to an echogenic structure, you would say it is __________ compared to that structure.

A

Hypoechoic

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15
Q

________ means uniform in texture/composition

A

Homogenous

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16
Q

________ means notuniform in texture/composition

A

Inhomogenous or heterogenous

17
Q

When does shadowing occur?

A

When the sound wave is completely reflected or absorbed by the structure

18
Q

Shadowing indicates that a structure is __________.

A

Dense

19
Q

What artifact indicates a dense structure?

A

Shadowing

20
Q

What artifact occurs when the sound beam travels through fluid?

A

Posterior enhancement/through transmission

21
Q

Describe the “flash light effect”.

A

Echoes behind the fluid are exaggerated or brighter when the sound beam travels through fluid.

22
Q

What is measured in the sagittal plane?

A

Length and thickness

23
Q

What is measured in the transverse plane?

A

Width