Foundation Lectures Flashcards

1
Q

Are the displacements caused by pneumothorax more obvious on an inspiratory or expiratory film?

A

Expiratory

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2
Q

What contrast is typically used with MRI?

A

Gadolinium

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3
Q

Why are brain tumours more dense on contrast CT?

A

Contrast leaks out of the tumour capillaries because their BBB is more compromised

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4
Q

What does anechoic mean?

A

Produces no echos - appears black on image

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5
Q

What is the number of ant. ribs that can be seen on a CXR of normal lungs?

A

5-6.5

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6
Q

What is distinct about pleural effusion?

A

Meniscus conture of the opacity

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7
Q

How does fluid appear in T2 MRI?

A

Bright

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8
Q

What are windows in CT scan examination?

A

The rangeof hounsfield units in which an image is viewed. Can determine what tissues will be seen

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9
Q

Does pathology appear bright in T1 or T2 weight MRI?

A

T2

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10
Q

Are urinary tract stones hyper or hypodense on CT?

A

Hyperdense

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11
Q

How does fluid appear in T1 MRI?

A

Dark

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12
Q

How do hyperechoic or more echogenic structures appear on US?

A

Whiter

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13
Q

Fluffy opacity is usually caused by what?

A

Fluid in alveolar

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14
Q

A starburst pattern or Codman’s triangle in the periosteum indicates what is happening with bone growth?

A

Rapid new bone growth is out stripping the ability of the periosteum to compensate

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15
Q

What is an exostosis?

A

Abnormal outgrowth of bone

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16
Q

What does endosteal refer to?

A

Damage to the inner surface of the cortex of bone

17
Q

What is a swimmer’s view?

A

Lateral x-ray of cervical spine with one arm up and one down

18
Q

Is density or intensity of signal used in describingMRI?

A

Intensity

19
Q

Is density or intensity of signal used in describingCT?

A

Density