Table 2. Differences in the measurements of the styloid process length and styloid process–tonsil distance between computed tomography (CT) and ultrasound groups.

Parameters	n	Mean (cm)	Standard deviation	t	P
Styloid process length				−1.817	0.071
Computed tomography	156	2.62	0.44
Ultrasound	156	2.65	0.48
Styloid process–tonsil distance				−0.798	0.426
Computed tomography	156	1.94	0.49
Ultrasound	156	1.95	0.50

The styloid process length and styloid process–tonsil distance measured by ultrasound were not significantly different from those measured by computed tomography (P>0.05).