Imaging diagnosis of metastasis-positive and -negative necks by direct coronal turbo STIR imaging or axial fat-suppressed T2-weighted (SPIR) imaging
Size* (mm) | Meta | Level of Neck (n) | |||||
---|---|---|---|---|---|---|---|
I (58):meta (+) (8),meta (−) (50) | II (58):meta (+) (25),meta (−) (33) | III (58):meta (+) (15),meta (−) (43) | |||||
STIR | SPIR | STIR | SPIR | STIR | SPIR | ||
≥5 | + | 32 | 36 | 47 | 46 | 25 | 22 |
− | 26 | 22 | 11 | 12 | 33 | 36 | |
≥6 | + | 24 | 26 | 44 | 44 | 23 | 19 |
− | 34 | 32 | 14 | 14 | 35 | 39 | |
≥7 | + | 15 | 18 | 44 | 41 | 18 | 17 |
− | 43 | 40 | 14 | 17 | 40 | 41 | |
≥8 | + | 14 | 13 | 36 | 35 | 17 | 17 |
− | 44 | 45 | 22 | 23 | 41 | 41 | |
≥9 | + | 9 | 9 | 31 | 26 | 11 | 13 |
− | 49 | 49 | 27 | 32 | 47 | 45 | |
≥10 | + | 6 | 5 | 29 | 24 | 8 | 12 |
− | 52 | 53 | 29 | 34 | 50 | 46 |
Note:—STIR indicates short τ inversion recovery; meta, metastasis.
* Cutoff point of short-axis diameter.