Machine Learning Analysis of Image Data Based on Detailed MR Image Reports for Nasopharyngeal Carcinoma Prognosis
Table 2
All important imaging higher ranked imaging findings.
ID
Variables
Numbers
5 years surv
Important
OS
1
Jugular foramen
770/22
89.32/53.13
<0.001
1.000
2
Paranasal sinuses
695/97
90.63/71.70
<0.001
0.966
3
Central necrosis of retropharyngeal LNs
696/96
89.58/78.75
0.002
0.893
4
Steep hill
494/298
92.08/81.96
<0.001
0.891
5
Meninges
764/28
89.57/48.05
<0.001
0.791
6
Invasion of carotid sheath
655/137
90.16/79.47
0.001
0.666
7
Extracapsular invasion of cervical LNs
735/57
89.09/77.70
0.002
0.630
8
Number of lower cervical LNs
0∼11
—
<0.001
0.488
9
Bilateral of parapharyngeal space
691/101
89.96/76.36
<0.001
0.336
10
Number of retropharyngeal LNs
0∼6
—
0.002
0.332
11
Pressure of carotid sheath
775/17
88.43/80.00
0.075
0.327
12
Number of upper cervical LNs
0∼23
—
<0.001
0.256
13
Posterior nasal meatus invasion
648/144
89.96/80.61
<0.001
0.205
DMFS
1
Number of cervical LNs
0∼34
—
<0.001
1.000
2
Meninges
764/28
88.81/51.63
<0.001
0.462
3
Posterior nasal meatus invasion
648/144
90.01/77.16
<0.001
0.396
4
Bilateral of retropharyngeal LNs
575/217
91.14/78.30
<0.001
0.387
5
Infratemporal fossa
771/21
88.61/52.84
<0.001
0.386
6
Extracapsular invasion of cervical LNs
735/57
88.45/78.19
0.007
0.250
7
Central necrosis of retropharyngeal LNs
696/96
88.97/78.49
0.002
0.242
8
Medial cartilage of ear
315/477
90.73/85.69
0.034
0.234
9
Musculus longus colli
513/279
91.24/81.06
<0.001
0.231
10
Jugular foramen
770/22
88.43/62.20
<0.001
0.204
11
Sphenoid sinus
700/92
89.51/74.02
<0.001
0.197
12
Number of upper cervical LNs
0∼23
—
<0.001
0.182
LRFS
1
Clustering of LNs
602/190
91.18/83.08
0.003
1.000
2
Pharyngeal recess
61/731
97.83/88.65
0.058
0.817
3
Paranasal sinuses
695/97
91.37/74.03
<0.001
0.765
4
Central necrosis of retropharyngeal LNs
600/192
91.02/83.98
0.004
0.540
5
Jugular foramen
770/22
90.03/64.62
<0.001
0.531
6
Bilateral of cervical LNs
317/475
93.85/86.11
0.001
0.366
7
Bilateral of retropharyngeal LNs
575/217
91.89/82.07
<0.001
0.309
8
Tensor velum palatine muscle
366/426
92.82/86.27
0.005
0.293
9
Bone of ear
755/37
89.83/79.78
0.038
0.193
10
Pressure of carotid sheath
775/17
89.70/72.51
0.033
0.145
11
Infratemporal fossa
771/21
89.78/72.96
0.012
0.137
: log-rank; LNs = lymph nodes; number (none/yes or invasion); HR (—) for continue variables; important (standardize): while 1.000 is the most important. Variables are selected by mRMR.