TABLE 1.
Characteristics of Patients in the Training and Test Cohorts
| Training Cohort Slices (Patient) | Test Cohort Slices (Patient) | Total Slices (Patient) | Age Range (year) | Sex | ||
|---|---|---|---|---|---|---|
| M | F | |||||
| NPC | 4529 (1369) | 992 (454) | 5521(1823) | 16–82 | 1302 | 521 |
| LH | 231 (159) | 71 (53) | 302 (212) | 14–67 | 97 | 115 |
| Lymphoma | 152 (85) | 38 (29) | 190 (114) | 14–81 | 83 | 31 |
| Chordoma | 362 (84) | 115 (29) | 377 (113) | 14–76 | 78 | 35 |
| Craniopharyngioma | 328 (169) | 75 (54) | 403 (223) | 14–77 | 146 | 77 |
| Normal | 4375 (‐) | 1353 (‐) | 5728 (‐) | ‐ | ‐ | ‐ |
| Total | 9977 (1866) | 2644 (619) | 12621 (2485) | 14–82 | 1706 | 779 |
The training and test groups were divided by patient as a unit, according to an approximate ratio of 3:1. For all categories of diseases, we only selected the slices with a visible mass near the nasopharyngeal area, and the slices with a mass that was very small or beyond the perinasopharyngeal area were not included. The images of the normal nasopharynx were obtained from the MRIs of 600 people undergoing routine physical examinations and nontumor slices in the perinasopharyngeal area of the MRIs of the five diseases mentioned. As the number of these patients cannot be effectively determined, “‐” is used.
NPC = nasopharyngeal carcinoma; LH = nasopharyngeal lymphatic hyperplasia; Normal = normal nasopharynx; M = Male; F = Female.