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2.在spiral CT中X光管旋轉360度時,檢查床(patient couch)前進12 mm;而X光束寬度(beam width)是6 mm,則pitch ratio?(A)8:1 (B)6:1
問題詳情
2.在spiral CT中X光管旋轉360度時,檢查床(patient couch)前進12 mm;而X光束寬度(beam width)是6 mm,則pitch ratio?
(A)8:1
(B)6:1
(C)2:1
(D)1.6:1
參考答案
答案:C
難度:非常簡單0.968421
統計:A(0),B(5),C(184),D(1),E(0)
用户評論
【
b9019329
】評論
pitch=x光管繞病人一圈時,檢查床的移動距離/射束寬度12/6 mm = 2
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