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Table 2 shows female:male distribution of the mean value, SD, median value, range and normal cut-off values of the measurements of different anatomical structures.

From: Computed tomography measurements of different dimensions of maxillary and frontal sinuses

  study cohort Female Male P-value
  Mean ± SD Mean ± SD
(median)
Range Normal
values
Mean ± SD
(median)
Range Normal
values
 
Maxillary sinus:
Volume (right) 15.4 ± 5 14 ± 3 (14) 5-19 8-20 18 ± 6 (18) 9-32 6-30 0.002
Volume (left) 16 ± 6 15 ± 4 (15) 7-21 7-23 18 ± 7 (18) 7-34 4-32 0.016
Craniocaudal diameter (right) 31.3 ± 5 30 ± 3 (31) 20-35 24-36 34 ± 5 (33) 27-43 24-44 0.004
Craniocaudal diameter (left) 31.3 ± 5 30 ± 3 (30) 24-34 24-36 33 ± 5 (34) 21-43 23-43 0.020
A-P diameter (right) 35 ± 4 35 ± 3 (35) 27-41 29-41 36 ± 3 (36) 31-46 30-42 0.056
A-P diameter (left) 35.6 ± 4 34 ± 4 (34) 27-40 26-42 35 ± 4 (36) 26-43 27-43 0.058
Width (right) 23.4 ± 4 23 ± 3 (22) 12-28 17-29 25 ± 4 (25) 18-34 17-33 0.018
Width (left) 23.7 ± 4 23 ± 3 (24) 16-30 17-29 25 ± 5 (25) 14-33 15-35 0.125
Anterior wall thickness at canine fossa (right) 1.1 ± 0.4 1 ± 0.4 (1) 0.6-2.3 0.2-1.8 1.1 ± 0.3 (1.2) 0.6-2.1 0.5-1.7 0.266
Anterior wall thickness at canine fossa (left) 1.1 ± 0.4 1.1 ± 0.4 (1) 0.6-2.5 0.3-1.9 1 ± 0.3 (1) 0.5-1.8 0.4-1.6 0.504
Frontal sinus:
A-P diameter (right) 9.6 ± 3 9 ± 4 (9) 4-20 1-17 10 ± 3 (10) 6-16 4-16 0.034
A-P diameter (left) 10.2 ± 3.3 9 ± 3 (9) 5-20 3-15 11 ± 3 (11) 6-18 5-17 0.046
Anterior wall thickness (right) 2.1 ± 0.8 2 ± 0.6 (1.9) 1.2-3.5 0.8-3.2 2.1 ± 1 (1.9) 0.9-5.2 0.1-4.1 0.824
Anterior wall thickness (left) 2.1 ± 0.8 2.1 ± 0.7 (1.9) 0.8-4.1 0.7-3.5 1.9 ± 0.7 (1.7) 0.9-3.7 0.5-3.5 0.450
Soft tissue thickness between anterior wall of maxillary sinus and the skin surface
AP-diameter (right) 11.6 ± 3 11 ± 3 (11) 5-15 5-17 12 ± 4 (11) 6-20 4-20 0.300
AP-diameter (left) 12.1 ± 4 11 ± 4 (11) 5-18 3-19 13 ± 4 (12) 5-21 5-21 0.227
Orbital floor
Thickness (right) 0.9 ± 0.2 0.8 ± 0.2 (0.8) 0.5-1.4 0.4-1.2 0.9 ± 0.3 (0.8) 0.4-1.4 0.3-1.5 0.440
Thickness (left) 0.9 ± 0.2 0.9 ± 0.3 (0.9) 0.5-2 0.3-1.5 0.9 ± 0.3 (0.8) 0.5-1.4 0.3-1.5 0.853
  1. SD indicates standard deviation.
  2. The volume is given in cm3 whereas other values are given in millimeter.
  3. P-values of statistically significant female:male differences are written in bold style.
  4. Normal values: The lower limit equals mean -2SD whereas the upper limit equals mean +2SD.
  5. A-P diameter indicates anteroposterior diameter (depth).