SPECT | Observer B | Observer C | ||||||
---|---|---|---|---|---|---|---|---|
1 | 2 | ICC (95% CI) | ICC level of agreement | 1 | 2 | ICC (95% CI) | ICC level of agreement | |
ROImax (mean ± SD) | ROImax (mean ± SD) | ROImax (mean ± SD) | ROImax (mean ± SD) | |||||
Malignant lesion(s) ROI | ||||||||
Primary lung tumour (T) | 560 ± 154 | 552 ± 146 | 0.96 (0.93–0.98) | Excellent | 568 ± 157 | 560 ± 156 | 0.95 (0.91–0.97) | Excellent |
Lymph node metastasis (LN) | 461 ± 167 | 454 ± 177 | 0.97 (0.94–0.98) | Excellent | 448 ± 163 | 460 ± 166 | 0.97 (0.95–0.98) | Excellent |
Healthy reference tissue | ||||||||
Blood pool (BP) | 295 ± 80 | 289 ± 82 | 0.98 (0.96–0.99) | Excellent | 270 ± 83 | 272 ± 83 | 0.97 (0.94–0.98) | Excellent |
Lung (freehand) | 310 ± 157 | 321 ± 121 | 0.87 (0.77–0.92) | Good to excellent | 251 ± 88 | 246 ± 97 | 0.91 (0.84–0.95) | Good to excellent |
Lung (AA) | 279 ± 108 | 266 ± 112 | 0.94 (0.89–0.97) | Good to excellent | 250 ± 94 | 258 ± 105 | 0.94 (0.88–0.96) | Good to excellent |
Lung (C) | 286 ± 129 | 291 ± 127 | 0.94 (0.9–0.97) | Good to excellent | 289 ± 128 | 302 ± 121 | 0.96 (0.92–0.98) | Excellent |
Liver (freehand) | 1262 ± 288 | 1288 ± 308 | 0.98 (0.95–0.99) | Excellent | 1194 ± 274 | 1192 ± 269 | 0.99 (0.99–1.00) | Excellent |
Liver (GOJ) | 1185 ± 270 | 1176 ± 257 | 0.97 (0.94–0.98) | Excellent | 1219 ± 283 | 1223 ± 283 | 0.98 (0.97–0.99) | Excellent |
ROImax ratio (mean ± SD) | ROImax ratio (mean ± SD) | ICC (95% CI) | ICC level of agreement | ROImax ratio (mean ± SD) | ROImax ratio (mean ± SD) | ICC (95% CI) | ICC level of agreement | |
---|---|---|---|---|---|---|---|---|
Ratios | ||||||||
T:BP | 1.99 ± 0.67 | 2.01 ± 0.65 | 0.96 (0.92–0.98) | Excellent | 2.20 ± 0.77 | 2.17 ± 0.81 | 0.95 (0.90–0.97) | Good to excellent |
T:L (freehand) | 2.01 ± 0.71 | 1.86 ± 0.66 | 0.84 (0.69–0.92) | Moderate to excellent | 2.40 ± 0.86 | 2.42 ± 0.87 | 0.92 (0.85–0.96) | Good to excellent |
T:L (AA) | 2.17 ± 0.86 | 2.24 ± 0.70 | 0.84 (0.72–0.91) | Moderate to excellent | 2.41 ± 0.90 | 2.32 ± 0.85 | 0.91 (0.83–0.95) | Good to excellent |
T:L (C) | 2.20 ± 0.92 | 2.08 ± 0.72 | 0.85 (0.74–0.92) | Moderate to excellent | 2.18 ± 0.88 | 1.99 ± 0.68 | 0.87 (0.71–0.94) | Moderate to excellent |
LN:BP | 1.65 ± 0.51 | 1.64 ± 0.58 | 0.95 (0.91–0.97) | Excellent | 1.76 ± 0.66 | 1.77 ± 0.60 | 0.95 (0.91–0.97) | Excellent |