Table 3.
Comparing size assessed by micro-CT, mammography, ultrasound and MRI
| Property studied | Pathology | Micro-CT | Mammography | Ultrasound | MRI |
|---|---|---|---|---|---|
| Studied cases (%) | 50 (100) | 50 (100) | 50 (100) | 42 (84) | 16 (32) |
| Tumour size (cm) (mean ± SD) | 1.34 ± 0.63 | 1.42 ± 0.56 | 1.23 ± 0.80 | 1.25 ± 0.57 | 1.66 ± 0.67 |
| Tumour size measurement | |||||
| Measured larger than pathology (%) | / | 23 (46) | 18 (36) | 14 (33) | 8 (50) |
| Measured smaller than pathology (%) | / | 18 (36) | 28 (56) | 26 (62) | 6 (38) |
| Accuracy | |||||
| Accurate within 0.2 cm of pathology (%) | / | 40 (80) | 24 (48) | 14 (33) | 7 (44) |
| Accurate within 0.5 cm of pathology (%) | / | 44 (88) | 35 (70) | 33 (79) | 13 (81) |
| Accurate within 1 cm of pathology (%) | / | 49 (98) | 46 (92) | 42 (100) | 15 (94) |
| Correlation coefficient | |||||
| Pathology (r) | / | 0.81 | 0.40 | 0.61 | 0.78 |
| Micro-CT (r) | / | / | 0.54 | 0.60 | 0.86 |
SD, standard deviation.