Table 2 Univariate analysis of potential influencing factors (categorical variables) of fusion accuracy

Modalities

CT/MRI

2.06 ± 1.27

0.61 ± 0.14

PET-Containing

2.35 ± 2.17

0.41 ± 0.16

P-value

0.45

 < 0.001*

Fusion algorithms

Automatic fusion

2.63 ± 2.37

0.54 ± 0.17

Manual fusion

2.02 ± 1.33

0.48 ± 0.18

Registration point-based fusion

1.94 ± 1.35

0.50 ± 0.18

P-value

0.24

0.43

Location of tumor

Maxilla

2.25 ± 1.33

0.63 ± 0.15

Mandible

2.17 ± 1.94

0.45 ± 0.16

P-value

0.81

 < 0.001*

Nature of tumor

Benign

2.05 ± 1.29

0.56 ± 0.16

Malignant

2.43 ± 2.32

0.42 ± 0.17

P-value

0.38

 < 0.001*

Dental artifacts

Absent

1.97 ± 1.55

0.55 ± 0.13

Present

2.24 ± 1.80

0.50 ± 0.19

P-value

0.59

0.37

Change of patients’ position

Absent

1.89 ± 1.27

0.51 ± 0.14

Present

2.76 ± 2.32

0.50 ± 0.23

P-value

0.05*

0.79