Table 2:
Qualitative assessment of patients with brain tumors: intraindividual comparison of 0.1-mmol/kg gadobenate and 0.1-mmol/kg gadoteratea
Diagnostic Information End Point | Reader | Gadobenate Preferred | No Difference | Gadoterate Preferred | Significance (P Value)b | 3-Reader Agreement κ Value (% Agreement) |
---|---|---|---|---|---|---|
Global diagnostic preference | 1 | 31 (49.2%) | 31 (49.2%) | 1 (1.6%) | <.0001 | 0.273 (50.8%) |
2 | 51 (82.3%) | 9 (14.5%) | 2 (3.2%) | <.0001 | ||
3 | 43 (69.4%) | 17 (27.4%) | 2 (3.2%) | <.0001 | ||
Lesion-border delineation | 1 | 29 (46.0%) | 33 (52.4%) | 1 (1.6%) | <.0001 | 0.271 (44.3%) |
2 | 34 (54.8%) | 27 (43.5%) | 1 (1.6%) | <.0001 | ||
3 | 25 (40.3%) | 35 (56.5%) | 2 (3.2%) | <.0001 | ||
Definition of disease extent | 1 | 15 (23.8%) | 48 (76.2%) | 0 | <.0001 | 0.286 (57.4%) |
2 | 18 (29.0%) | 43 (69.4%) | 1 (1.6%) | <.0001 | ||
3 | 15 (24.2%) | 45 (72.6%) | 2 (3.2%) | .0023 | ||
Visualization of lesion internal morphology | 1 | 10 (15.9%) | 53 (84.2%) | 0 | .002 | 0.215 (54.1%) |
2 | 14 (22.6%) | 48 (77.4%) | 0 | .0001 | ||
3 | 23 (37.1%) | 38 (61.3%) | 1 (1.6%) | <.0001 | ||
Lesion contrast enhancement | 1 | 31 (49.2%) | 31 (49.2%) | 1 (1.6%) | <.0001 | 0.249 (49.2%) |
2 | 51 (82.3%) | 9 (14.5%) | 2 (3.2%) | <.0001 | ||
3 | 43 (69.4%) | 17 (27.4%) | 2 (3.2%) | <.0001 |
Comparisons based on the number of patients with both postdose T1SE images assessed and technically adequate: n = 63 for reader 1, n = 62 for readers 2 and 3. Numbers in parentheses, except where noted, represent proportions of patients.
Wilcoxon signed rank test.