35.磁振造影中,屏蔽線圈(shielding coil)的用途為:
(A)修正心跳假影
(B)降低雜散磁場(fringe field)
(C)修正主磁場的均勻度
(D)修正呼吸假影
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統計: A(3), B(1604), C(443), D(4), E(0) #1633981
統計: A(3), B(1604), C(443), D(4), E(0) #1633981