A spin-echo imaging sequence produces an image with a SNR=90 for muscle tissue when Nex=2. What SNR is expected when Nex=3?
SNR ∝ Nex
1/2
(SNR)
1
/(SNR)
2
= [Nex
1
/Nex
2
]
1/2
90/(SNR)
2
= [2/3]
1/2
(SNR)
2
= 110