CT (computed tomography) Flashcards

1
Q

How many shades of grey?

A

MANY!!!!
FOUR-SAWSEN!!!!

4096…

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2
Q

Hvad er HU?

A

Houndsfield units

Dækker over 4096 grånuancer

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3
Q

Hvor mange HU er vand?

A

0

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4
Q

Hvor mange HU er luft?

A

-1000 (sort)

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5
Q

Hvor mange HU er metal?

A

op til 3000

hvidt

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6
Q

Man kan indstille antal HU, og dermed lave sit vindue mere specifikt.

A

ja nemli ja

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7
Q

Lunger HU?

A

-600 til -1200

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8
Q

Fedtvæv HU?

A

-40 til -100 ca

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9
Q

CSF HU?

A

0 til +10 ca

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10
Q

Organer (nyrer, lever mm) HU?

A

+20 til +80

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11
Q

Knogle HU?

A

+100 til +1000

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12
Q

Hvad sker der med ting, som er udenfor den valgte HU grænse?

A

Bliver enten hvidt eller sort (så man kan fokusere på det væv man har valgt at se på).

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