Validity study of vertebral rotation measurement using 3-D ultrasound in adolescent idiopathic scoliosis

Qian Wang, Meng Li, Edmond H.M. Lou, Winnie C.W. Chu, Tsz ping Lam, Jack C.Y. Cheng, Man Sang Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)


This study aimed to assess the validity of 3-D ultrasound measurements on the vertebral rotation of adolescent idiopathic scoliosis (AIS) under clinical settings. Thirty curves (mean Cobb angle: 21.7° ± 15.9°) from 16 patients with AIS were recruited. 3-D ultrasound and magnetic resonance imaging scans were performed at the supine position. Each of the two raters measured the apical vertebral rotation using the center of laminae (COL) method in the 3-D ultrasound images and the Aaro-Dahlborn method in the magnetic resonance images. The intra- and inter-reliability of the COL method was demonstrated by the intra-class correlation coefficient (ICC) (both [2, K] >0.9, p < 0.05). The COL method showed no significant difference (p < 0.05) compared with the Aaro-Dahlborn method. Furthermore, the agreement between these two methods was demonstrated by the Bland-Altman method, and high correlation was found (r > 0.9, p < 0.05). These results validated the proposed 3-D ultrasound method in the measurements of vertebral rotation in the patients with AIS.
Original languageEnglish
Pages (from-to)1473-1481
Number of pages9
JournalUltrasound in Medicine and Biology
Issue number7
Publication statusPublished - 1 Jul 2016


  • 3-D ultrasound
  • Adolescent idiopathic scoliosis
  • Measurement
  • Reliability
  • Validity
  • Vertebral rotation

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Biophysics
  • Acoustics and Ultrasonics


Dive into the research topics of 'Validity study of vertebral rotation measurement using 3-D ultrasound in adolescent idiopathic scoliosis'. Together they form a unique fingerprint.

Cite this