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Principles of Science Term 1 & 2 > Diagnostic Imaging > Flashcards

Diagnostic Imaging Flashcards

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1
Q

What is the definition of Radiography?

A

Making images representing a shadow of a patient placed in an X-ray beam.

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2
Q

What is the physical basis used in Radiography?

A

X-rays

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3
Q

What do radiographic images show?

A

Variations in physical density.

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4
Q

What is the definitely of Tomography?

A

Making images that represent a section through the body using an X-ray beam.

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5
Q

What is the physical bases of Tomography?

A

X-rays

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6
Q

What do Tomography images show?

A

Variations in physical density.

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7
Q

What does CT stand for?

A

Computed tomography.

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8
Q

What is the definition of Scintigraphy?

A

Making images representing distribution of radioactivity injected into a patient.

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9
Q

What is the physical basis of Scintigraphy?

A

Gamma rays

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10
Q

What do Scintigraphy images show?

A

Metabolic activity

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11
Q

Give one example of a use of Scintigraphy

A

Bone Scintigraphy

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12
Q

What is the definition of Magnetic resonance imaging (MRI)?

A

Making images by applying pulse magnetic energy to a patient and collecting radiowaves emitted between pulses.

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13
Q

What is the physical bases of MRI?

A

Radiowaves

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14
Q

What do MRI images show?

A

Magnetisation - Much more detail in soft tissues. Predominantly used in Neurological cases.

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15
Q

What is the definition of Ultrasonography?

A

Making images by firing pulses of high frequency sound into body and collecting returning echoes.

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16
Q

Why is it important to clip the hair when doing an ultrasound?

A

There needs to be good contact between transducer and skin. It is important to use gel for this reason also.

17
Q

What is the physical basis of Ultrasonography?

A

High frequency sound

18
Q

What do ultrasound images show?

A

Echogenicity

Principles of Science Term 1 & 2 (19 decks)

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