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
統計: A(63), B(11), C(31), D(12), E(0) #1114824
詳解 (共 4 筆)
#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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