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DATORTOMOGRAFI

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Stråldosbegrepp för<br />

datortomografi (5)<br />

CTDI vol medelstråldosen i hela den<br />

bestrålade volymen vid spiralscanning<br />

CTDI<br />

vol<br />

=<br />

N ⋅T<br />

∆d<br />

⋅CTDI<br />

Påverkas av pitchfaktorn<br />

w<br />

=<br />

CT<br />

CTDI w<br />

pitchfaktor

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