Article Figures & Data
Figures
- FIGURE 1.
Representative slice of cylindric phantom. Gray circle indicates placement of region of interest on phantom.
Tables
SCF (s−1MBq−1) Institution Calibration source Detector 1 Detector 2 A 99mTc 86.8 88.1 B 57Co 88.2 88.7 C 99mTc 87.6 84.9 D 99mTc 89.9 85.3 E 57Co 90.1 89.1 F 99mTc 87.7 88.2 - TABLE 2
Bone SPECT Image Acquisition and Reconstruction Conditions Used for Clinical Conditions at Participating Institutions
Acquisition Reconstruction Institution Mode Number of projections Duration of projection (s) Updates Gaussian filter (full width at half maximum; mm) A Continuous 90 12 48 (2 subsets) 5 B Step and shoot 120 10 30 (1 subsets) 6 C Continuous 90 12 48 (2 subsets) 10 D Continuous 120 9 30 (1 subsets) 7 E Step and shoot 72 20 48 (2 subsets) 5 F Continuous 72 16 40 (1) 7 - TABLE 3
Radioactivity Concentrations in SPECT Images Under 2 Conditions at Participating Institutions
Radioactivity concentrations in SPECT images (kBq/mL) Institution Standardized conditions Clinical conditions A 99.65 ± 0.24 102.29 ± 0.55 B 99.32 ± 0.40 99.90 ± 0.25 C 101.33 ± 0.36 103.77 ± 0.51 D 102.96 ± 0.37 104.09 ± 0.24 E 108.35 ± 0.36 108.49 ± 0.11 F 95.71 ± 0.60 96.78 ± 0.64 - TABLE 4
Radioactivity Concentrations in SPECT Images in Repetitive Experiment at Institution A
Radioactivity concentrations in SPECT images (kBq/mL) Scanner Test 1 Test 2 Test 3 1 98.96 ± 0.07 100.58 ± 0.86 100.01 ± 0.51 2 99.65 ± 0.24 101.53 ± 0.22 101.81 ± 0.30 Institution Dose calibrator Accuracy (%) A IGC-7E 1.68 ± 0.42 B IGC-7 1.95 ± 0.76 C CRC-55tW 1.82 ± 0.69 D IGC-7 4.54 ± 0.39 E ATOMLAB 500 −4.90 ± 0.21 F IGC-7F 6.13 ± 0.44
