Clinical Efficacy of Real-Time Sonoelastography for the Follow-Up of Congenital Sternocleidomastoid Muscle Torticollis
10.3348/jksr.2020.81.1.176
- Author:
Mi ri JEONG
1
;
In Sook LEE
;
Yong Beom SHIN
;
You Seon SONG
;
Sekyoung PARK
;
Jong Woon SONG
;
Jin Il MOON
Author Information
1. Department of Radiology, Pusan National University Hospital, Biomedical Research Institute, Busan, Korea. lis@pusan.ac.kr
- Publication Type:Original Article
- From:Journal of the Korean Radiological Society
2020;81(1):176-189
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE:To evaluate the clinical efficacy of real-time sonoelastography (RTS) for the follow-up of congenital muscular torticollis, based on measurements of muscle elasticity.
MATERIALS AND METHODS:Thirty-four infants (23 male, 11 female) with congenital sternocleidomastoid (SCM) muscle torticollis underwent ultrasonography and elastography between November 2012 and December 2014. We evaluated the thickness, morphology (mass-like, fusiform, or overall thickened shape), and echogenicity of the SCM muscle on grayscale images and color patterns (homogeneous blue, mixed green < 50% and ≥ 50%, and green to red) on elastography. Strain ratios were measured using Q-lab software. A clinician classified the degree of neck rotation and side flexion deficits using a 5-point grade system based on angles of neck rotation and side flexion. Correlations between the ultrasonography and clinical findings were evaluated by statistical analysis.
RESULTS:Twenty-two infants had right and 12 had left SCM torticollis, respectively. Linear regression analysis showed that involved/contralateral SCM thickness differences, morphology, elasticity color scores, and strain ratios of the affected SCM muscles were significantly correlated with neck rotation and side flexion deficit scores (p < 0.05). The elasticity color score of the affected SCM muscle was the most significant factor.
CONCLUSION:RTS might provide a reliable means for evaluating and monitoring congenital muscular torticollis.
