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Table 4 The mean TNC ratios (ranges) and mean SNRs (ranges) of the non-detectable and detectable liver lesions for each reconstruction method with corresponding p values and 95% confidence interval (CI)

From: Evaluation of reconstruction methods and image noise levels concerning visual assessment of simulated liver lesions in 111In-octreotide SPECT imaging

 

Non-detectable

Detectable

p value (95% CI)

Mean TNC ratio (range)

 fAC OSEM

1.12 (0.96–1.25)

1.19 (1.14–1.23)

.015 (0.02–0.13)

 fMC OSEM

1.22 (0.83–1.57)

1.45 (1.25–1.85)

.005 (0.08–0.39)

 MC OSEM

1.28 (0.83–1.96)

1.73 (1.44–2.55)

.002 (0.19–0.70)

Mean SNR (range)

 fAC OSEM

8.2 (3.2–14.0)

11.3 (7.7–18.3)

.018 (0.59–5.71)

 fMC OSEM

7.9 (3.3–14.8)

12.8 (7.9–18.4)

 < .001 (2.30–7.45)

 MC OSEM

7.6 (2.9–18.9)

12.3 (7.8–18.1)

.004 (1.62–7.77)