問題詳情

39 在臨床磁振造影系統中,梯度線圈之扭轉速率(slew rate)較典型的範圍為何?(一律給分)
(A) 0.7-1.2 mT/m/s
(B) 7-12 mT/m/s
(C) 70-120 mT/m/s
(D) 700-1200 mT/m/s

參考答案

答案:A,B,C,D
難度:困難0.333333
統計:A(3),B(3),C(5),D(4),E(0)

用户評論

Steven Huang】評論

出處:http://mriquestions.com/gradient-specifications.html In the current marketplace, high field superconducting scanners(高磁場超導磁鐵掃描儀) boast slew rates in the 150-200 T/m/s range; superconducting open scanners(開放式磁鐵掃描儀) in the 100-120 T/m/s range; and lower field permanent scanners on the order of 50 T/m/s.