Spastic Cerebral Palsy in Children: Dynamic Sonoelastographic Findings of Medial Gastrocnemius

被引：92

作者：

Kwon, Dong Rak ^{[1
]}

Park, Gi Young ^{[1
]}

Lee, Sung Uk ^{[1
]}

Chung, Inbum ^{[2
]}

机构：

[1] Catholic Univ Daegu, Sch Med, Dept Rehabil Med, Taegu 705718, South Korea

[2] CHA Gen Hosp, Internship Program, Fdn Programme, Seoul, South Korea

来源：

RADIOLOGY | 2012年 / 263卷 / 03期

关键词：

FUNCTIONAL STATUS; PLANTAR-FLEXION; MUSCLE; LESIONS; ADULTS;

D O I：

10.1148/radiol.12102478

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

100231 [临床病理学]; 100902 [航空航天医学];

摘要：

Purpose: To study the elastic properties of the medial gastrocnemius (GCM) in children with spastic cerebral palsy. Materials and Methods: The study protocol was approved by the Research Ethics Committee of the hospital, and informed consent was obtained from each child's parent. Fifteen children with spastic cerebral palsy (group 1) and 13 children without neurologic and musculoskeletal disabilities (group 2) were included. Because group 1 included three children with hemiplegia, the total number of legs examined was 27. Children in group 2 had both legs examined, for a total of 26 legs studied. The modified Ashworth scale score of the ankle in group 1 was assessed by a physical therapist. A physiatrist performed ultrasonography and dynamic sonoelastography (DS) together, measured the thickness of the GCM, and calculated the GCM ratio in both groups. On color-scaled DS images, the DS score of the GCM was graded from DS 1 (purple to green: soft) to DS 4 (red: stiff), and the color histogram of the GCM was subsequently analyzed. Strain ratio and local shear wave velocity were calculated in the GCM and the soleus muscle by using acoustic radiation force impulse imaging. Results: The GCM ratio in group 1 was significantly smaller than that in group 2. The DS score of GCM in group 1 was significantly higher than that in group 2. The median red pixel values were significantly higher, and the blue pixel values were significantly lower on color histogram in group 1 than those in group 2. The strain ratio in group 1 was significantly lower than that in group 2, and the local shear wave velocity of GCM in group 1 was higher than that in group 2. There were significant correlations between the modified Ashworth scale scores and DS parameters. Conclusion: DS demonstrated a difference in muscle stiffness in the GCM between children with spastic cerebral palsy and those without neurologic and musculoskeletal disabilities. (c) RSNA, 2012

引用

页码：794 / 801

页数：8

共 22 条

[1]

Evaluation of real-time qualitative sonoelastography of focal lesions in the parotid and submandibular glands: applications and limitations [J].