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Table 3 Reconstruction algorithm and evaluation software that were reported from the departments

From: Evaluation of inter-departmental variability of ejection fraction and cardiac volumes in myocardial perfusion scintigraphy using simulated data

Department number Reconstruction algorithm Iteration updates Filter Cut-off frequency/width a Evaluation software
1 N/A     
2 FBP   Butterworth 0.52 ECToolbox
3 OSEM 80 Butterworth 0.45 QGS
4 OSEM N/A Hanning   QGS
5 OSEM 48 Butterworth 0.4 AutoQuant
6 N/A     
7 FBP   Butterworth 0.35 QGS
8 N/A     
9 FBP   Butterworth 0.35 Exini heart
10 FBP   Butterworth 0.65 QGS
11 N/A     
12 FBP   Butterworth 0.4 QGS
13 FBP   Butterworth 0.9 QGS
14 FBP   Butterworth 0.52 QGS
15 OSEM 120 Butterworth 0.4 QGS
16 FBP   Butterworth 0.4 ECtoolbox
17 OSEM 32 3D Gaussian 0.8 QGS
  1. aCut-off frequency for Butterworth filter is in unit of Nyquist frequency and SD for 3D Gaussian filter is in pixels.
  2. FBP filtered back projection, OSEM ordered subset expectation maximization.