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MR-fysik > räkna > Flashcards

räkna Flashcards

1
Q

hur beräknar man en excitationspuls centerfrekvens?

A

f = gammasträckG_SSdelta_z

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2
Q

Hur beräknar man bandbredd?

A

BW = gammasträckG_ssdeltax(tjocklek)

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3
Q

Beräkna excitationspuls längd i tiden?

A

Larmors ekvation: w = gamma*B
Vinkelfrekvens: w = alpha/t

=> alpha/t = gammaB
t = alpha/(gammaB)

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MR-fysik (10 decks)

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