Table 2 The accuracy measures for the registration (fiducial registration errors, FRE) and the navigation procedure (target registration errors, TRE).

From: Electromagnetic surgical navigation in patients undergoing mandibular surgery

Case

FRE (mm)

TRE (mm)

Anatomical landmarks

Cutting guide landmarks

1

0.8

2.0

1.4

2

0.5

2.6

1.6

3

1.5

3.3

2.7

4

0.6

2.0

1.2

5

4.1

4.6

3.7

6

0.6

2.2

1.7

7

1.9

4.4

3.1

8

1.6

3.6

1.7

9

0.8

3.2

5.8

10

0.7

4.9

4.8

11

0.7

1.9

1.3

Mean (STD)

1.2 ± 1.1

3.2 ± 1.1

2.6 ± 1.5

  1. FRE fiducial registration error, TRE target registration error, STD standard deviation.