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

EJNMMI Physics

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

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

^aCut-off frequency for Butterworth filter is in unit of Nyquist frequency and SD for 3D Gaussian filter is in pixels.
FBP filtered back projection, OSEM ordered subset expectation maximization.