From: Arterial spin labeling and diffusion-weighted imaging for identification of retropharyngeal lymph nodes in patients with nasopharyngeal carcinoma
3 mm
4 mm
5 mm
6 mm
7 mm
8 mm
9 mm
≥10 mm
Short axis
1/18
16/27
10/11
13/13
2/2
6/6
5/5
18/18
Long axis
0
1/1
1/11
6/20
12/15
5/6
11/12
35/35