BioMed Research International

Research Article

The Quantitative Assessment of Imaging Features for the Study of Hirayama Disease Progression

Table 1

The related parameters of Hirayama disease and healthy subjects in the cervical spine MRI.
 Hirayama diseaseNormal subjects
Course (year)≤11-22-33-4≥4 —
10201491111
Age ± SD (range), yr19.7 ± 2.7 (15–25)18.3 ± 1.7 (15–21)18.2 ± 1.5 (15–21)19.9 ± 1.8 (18–22)22.1 ± 2.5 (18–26)36.5 ± 9.1 (21–52)
Height ± SD (range), cm172.3 ± 5.2 (160–183)174.3 ± 5.1 (167–184)172.7 ± 5.2 (162–182)171.4 ± 3.5 (166–176)173.2 ± 4.2 (168–180)170.1 ± 6.6 (156–180)
MRINeutral positionFlexion positionNeutral positionFlexion positionNeutral positionFlexion positionNeutral positionFlexion positionNeutral positionFlexion positionNeutral positionFlexion position
C4-5            
 0.4 ± 0.10.5 ± 0.10.4 ± 0.10.5 ± 0.10.4 ± 0.10.4 ± 0.10.4 ± 0.10.4 ± 0.10.5 ± 0.10.5 ± 0.10.5 ± 0.10.5 ± 0.1
 0.3 ± 0.10.4 ± 0.10.3 ± 0.10.4 ± 0.10.2 ± 0.10.3 ± 0.10.2 ± 0.10.4 ± 0.10.2 ± 0.10.4 ± 0.10.2 ± 0.10.2 ± 0.1
C5-6            
 0.4 ± 0.10.4 ± 0.10.4 ± 0.10.4 ± 0.10.4 ± 0.10.4 ± 0.10.4 ± 0.10.4 ± 0.10.4 ± 0.10.4 ± 0.10.4 ± 0.10.5 ± 0.1
 0.3 ± 0.10.4 ± 0.10.3 ± 0.040.3 ± 0.10.3 ± 0.10.4 ± 0.10.3 ± 0.10.4 ± 0.10.3 ± 0.10.4 ± 0.00.2 ± 0.10.2 ± 0.1
C6-7            
 0.5 ± 0.10.5 ± 0.10.4 ± 0.10.4 ± 0.040.4 ± 0.10.5 ± 0.10.5 ± 0.10.5 ± 0.10.4 ± 0.10.4 ± 0.10.5 ± 0.10.5 ± 0.1
 0.2 ± 0.10.4 ± 0.10.2 ± 0.10.4 ± 0.10.2 ± 0.10.4 ± 0.10.2 ± 0.10.4 ± 0.10.2 ± 0.10.4 ± 0.00.2 ± 0.10.2 ± 0.1
C7-T1            
 0.6 ± 0.10.6 ± 0.10.6 ± 0.10.6 ± 0.10.6 ± 0.10.6 ± 0.030.6 ± 0.10.6 ± 0.10.6 ± 0.10.5 ± 0.10.6 ± 0.10.6 ± 0.1
 0.2 ± 0.10.3 ± 0.10.2 ± 0.10.3 ± 0.10.2 ± 0.00.3 ± 0.10.2 ± 0.10.3 ± 0.10.2 ± 0.00.3 ± 0.10.2 ± 0.10.2 ± 0.1
Note: the distance between the posterior edge of the cervical spinal cord and posterior wall of the spinal canal was termed , the distance between the anterior wall and posterior wall of the spinal canal was termed , and the anteroposterior diameter and transverse diameter of the cross section of spinal cord were termed and .