70 PET 造影影像的雜訊(noise)是由下列何者而來的?
(A)光電效應(photoelectric effect)
(B)非合調散射(incoherent scattering)
(C)成對發生(pair production)
(D)合調散射(coherent scattering)
答案:登入後查看
統計: A(14), B(54), C(47), D(8), E(0) #1116148
統計: A(14), B(54), C(47), D(8), E(0) #1116148
詳解 (共 3 筆)
#3468049
解釋︰
The transmission image reflects thenattenuation coefficient of the tissue. nAt 511 keV, virtually all attenuation is due to Compton scatter.
出處︰
Physics in nuclear medicine(p.355)
0
0