Quantitative 177Lu SPECT/CT imaging for personalized dosimetry using a ring-shaped CZT-based camera

EJNMMI Physics

Table 4 Recovery coefficients for GE-OSEM, Q.Clear and Q.ClearRDP with 192i1s and 12i16s measured on the NEMA phantom with cold and hot background

Reconstruction		Recovery coefficient [%] (cold background)						Recovery coefficient [%] (hot background)
Reconstruction		10 mm	13 mm	17 mm	22 mm	28 mm	37 mm	10 mm	13 mm	17 mm	22 mm	28 mm	37 mm
GE-OSEM	192i1s	44	49	56	58	62	69	22	45	41	53	59	68
GE-OSEM	12i16s	45	47	52	58	61	71	22	48	43	53	60	69
Q.Clear	192i1s	33	46	53	55	58	67	17	30	29	41	50	64
Q.Clear	12i16s	44	46	52	57	61	70	22	44	41	52	59	68
Q.ClearRDP	192i1s	22	39	46	51	55	65	15	24	24	35	46	60
Q.ClearRDP	12i16s	28	39	44	51	56	67	17	29	28	41	52	63