CV, measurement times, and lesion volume of CSE, FSE, and fFLAIR
| Sequence | Mark | CV1 (%) median (95% CI) | CV2 (%) Rater 1 | Time (min) (n=22) Median (range) | Volume (cm3) (n=25) Median (range)3-152 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rater 1 | Rater 2 | Interrater | |||||||||
| CSE | RO | 3.0 (2.5) (1.8–4.2) | 2.7 (2.3) (1.8–3.6) | 6.5 (5.7) (5.1–7.8) | 4.2 | 23.9 (3–52)3-151 | 20.2 (1.4–82.0) | ||||
| FSE | RO | 3.1 (1.5) (1.8–4.4) | 4.3 | 16 (3–33) | 16.9 (1.6–70.3) | ||||||
| fFLAIR | RO | 3.3 (2.5) (2.2–4.5) | 4.3 | 16.5 (4–30) | 20.1 (1.7–87.8) | ||||||
| fFLAIR filtered | RO | 3.6 (2.5) (2.1–4.4) | 4.9 | 15.6 (5–34) | 19.9 (1.6–92.4) | ||||||
| fFLAIR filtered | SI | 6.9 (3.7)3-150 (3.5–10.1) | 4.2 (3.0) (2.6–5.5) | 14.2 (10.2) (8.9–19.6) | 10.5 | 22.2 (7–65)3-151 | 22.7 (4.1–98.0) | ||||
↵3-150 The CVs for this sequence were significantly higher than for the others (Wilcoxon t test for paired data, p<0.05).
↵3-151 The times taken for analysis of these sequences (segmentation only, not initial lesion marking) were significantly longer than for the others, but not significantly different from each other (Wilcoxont test for paired data, p<0.05).
↵3-152 These are the median and range of volumes from the first set of measurements. See results for significance of differences between the groups.