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A Novel Method to Measure the Sagittal Curvature in Spinal Deformities: The Reliability and Feasibility of 3-D Ultrasound Imaging.

A Novel Method to Measure the Sagittal Curvature in Spinal Deformities: The Reliability and Feasibility of 3-D Ultrasound Imaging.

Authors :
Lee TT
Jiang WW
Cheng CLK
Lai KK
To MKT
Castelein RM
Cheung JPY
Zheng YP
Source :
Ultrasound in medicine & biology [Ultrasound Med Biol] 2019 Oct; Vol. 45 (10), pp. 2725-2735. Date of Electronic Publication: 2019 Jul 12.
Publication Year :
2019

Abstract

The objective of this study was to test the reliability of sagittal spinal curvature measurements using 3-D ultrasound in patients with adolescent idiopathic scoliosis (AIS). Ultrasound spinous process angle (USSPA) and ultrasound laminae angle (USLA) were measured on sagittal ultrasound images, while the Cobb angle (XCA) was measured on sagittal X-ray images. Intra-class correlation coefficients (ICC) for the intra- and inter-observer variability, linear regression analysis and Bland-Altman method, including mean absolute difference (MAD), were investigated to evaluate the reliability and validity of the two ultrasound angles compared with XCA. Excellent measurement reliabilities were demonstrated for both ultrasound angles (ICC ≥ 0.91). Moderate to good and significant linear correlations and good agreement were demonstrated between the ultrasound methods and XCA (Thoracic [R <superscript>2</superscript> ≥ 0.574] / Lumbar [R <superscript>2</superscript> ≥ 0.635]). No significant differences were found for the MADs between both corrected ultrasound angles and XCA. Sagittal ultrasound angles were demonstrated to be reliable for assessing sagittal curvature using spinous processes and laminae and to have good and significant correlations with XCAs. Since it is non-ionizing and relatively low cost, this method opens the possibility of providing frequent curve monitoring and evaluation, and screening for AIS patients, particularly based on sagittal profiles.<br /> (Copyright © 2019 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.)

Details

Language :
English
ISSN :
1879-291X
Volume :
45
Issue :
10
Database :
MEDLINE
Journal :
Ultrasound in medicine & biology
Publication Type :
Academic Journal
Accession number :
31303403
Full Text :
https://doi.org/10.1016/j.ultrasmedbio.2019.05.031