Table 2.
Comparison of histopathology measurements of the resected specimens with MRI measurements using three-dimensional (3D) and axial measurements according to RECIST
| Sequence (n = cases)a | Median (IQR) histopathological diameter (cm) | Median (IQR) MRI diameter (cm) Reader 1 | Median (IQR) difference (cm) Reader 1 | Median (IQR) Absolute error (cm) Reader 1 | p-value Reader 1 |
|---|---|---|---|---|---|
| Reader 2 | Reader 2 | Reader 2 | Reader 2 | ||
| Axial T1w precontrast (n = 31) | 5.8 (4.0) | 4.7 (3.3) | −1.4 (1.8) | 1.1 (1.7) | < 0.001 |
| 4.5 (3.6) | −0.8 (1.8) | 1.1 (1.7) | < 0.001 | ||
| 3D T1w precontrast (n = 31) | 5.8 (4.0) | 5.4 (5.1) | −0.3 (1.3) | 0.7 (0.7) | 0.262 |
| 5.3 (5.2) | −0.3 (1.3) | 0.8 (0.9) | 0.159 | ||
| Axial T1w postcontrast (n = 37) | 5.8 (5.2) | 4.9 (4.3) | −1.0 (1.9) | 1.1 (1.5) | < 0.001 |
| 5.0 (4.4) | −0.9 (1.3) | 1.0 (1.2) | < 0.001 | ||
| 3D T1w postcontrast (n = 37) | 5.8 (4.2) | 5.5 (4.8) | −0.1 (1.2) | 0.6 (0.6) | 0.739 |
| 5.5 (4.9) | −0.2 (1.4) | 0.7 (0.9) | 0.722 | ||
| Axial T2w TSE (n = 38) | 5.8 (4.2) | 4.7 (4.2) | −1.0 (1.6) | 1.3 (1.7) | < 0.001 |
| 4.8 (4.2) | −1.0 (1.6) | 1.2 (1.6) | < 0.001 | ||
| 3D T2w TSE (n = 38) | 5.8 (4.2) | 5.4 (5.1) | −0.3 (1.1) | 0.6 (0.8) | 0.379 |
| 5.4 (5.1) | −0.1 (1.1) | 0.5 (0.7) | 0.722 | ||
| Axial DWI (n = 26) | 6.5 (4.9) | 5.5 (6.0) | −1.3 (2.2) | 1.4 (2.0) | < 0.001 |
| 5.5 (6.0) | −1.2 (2.2) | 1.4 (2.0) | < 0.001 | ||
| 3D DWI (n = 26) | 6.5 (4.9) | 6.5 (5.4) | −0.2 (1.3) | 0.7 (1,2) | 0.159 |
| 6.4 (5.3) | −0.2 (1.5) | 0.8 (1.1) | 0.196 |
aNot all sequences in all patients acquired
Abbreviations: 3D Three-dimensional