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FIGURE 5. (A) NaCl-filled spheric phantom imaged with spin-echo sequence when no parts of PET detector or shielding materials were in MRI scanner. Measured SNR is 43.1. (B) When mouse was scanned with two 0.8-mm-thick copper cans in field of view of magnet, almost no signal could be measured. (C) SNR of 30.0 is obtained using copper cans with 0.15-mm material thickness.
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