59 在 SPECT 造影中,偵測器(detector)旋轉方式採用 elliptical orbit,相對於 circular orbit 有何特性?
(A)增加計數量(statistics)
(B)降低解析度(resolution)
(C)減少資料收集時間
(D)增加均勻度(uniformity)

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統計: A(63), B(11), C(31), D(12), E(0) #1114824

詳解 (共 4 筆)

#4044426
 Many SPECT systems ...
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#6535512
  Circular orbit:偵測器...
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#3463051

解釋:

 Many SPECT systemsnhave more sophisticated gantries that allow the detector heads to trace outnelliptical rather than circular orbits.

    Elliptical orbits or orbits that follow thencontours of the patient allow the detector to pass closer to the patient thannwould be the case with circular orbits, which can lead to significantnimprovements in spatial resolution.

出處:

 Physics in nuclearnmedicine. P.300


 

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#7148202
這是一個非常經典的核子醫學(Nuclea...
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