Highlights
- •Accuracy of the EOS 3D rib cage reconstruction image was validated in cases of AIS.
- •The EOS 3D rib cage reconstruction image was compared with a 3D CT image.
- •No significant differences in measurements were observed between EOS and CT images.
- •The EOS 3D reconstruction image was useful for clinical diagnosis in AIS patients.
Abstract
Simultaneous biplanar radiographic scanning technique (EOS) (EOS Imaging, Paris, France)
variability has previously been evaluated for spinal parameters, however limited EOS
data exist regarding accuracy of 3-dimensional (3D) rib cage reconstruction. The purpose
of this study was to compare the evaluation of ribcage parameter between EOS 3D images
and 3D computed tomography (CT) images from adolescent idiopathic scoliosis (AIS)
patients, and validate the accuracy of EOS 3D ribcage reconstruction images. In total,
31 AIS patients (27 females, 4 males; mean age 14.4 years) with Lenke types 1 or 2
who underwent corrective surgery were enrolled. EOS 3D images were assessed preoperatively
for all patients. Rib cage parameters were measured, including surface spinal penetration
index (sSPI), endothoracic hump ratio (EHR), vertebra-sternum angle (VSA), rib-vertebral
angle difference (RVAD) at apex and vertebral lateral decentering (VLD). Measurements
were subsequently compared with CT images. No significant differences were observed
in sSPI or EHR measurements between EOS and CT images. Measured VSA values from EOS
and CT were −28.1 degrees and −26.1 degrees, respectively. Measured RVAD values from
EOS and CT were 13.0 degrees and 12.0 degrees, respectively. No significant differences
were observed for measured VSA or RVAD values between EOS and CT images. Measured
VLD values from EOS and CT were 68.5% and 67.5%, respectively, representing similar
values. The accuracy of rib cage parameters measured with EOS software is similar
to the measurements obtained with CT. The results of this study provide surgeons with
important evidence pertaining to this novel imaging technology.
Keywords
To read this article in full you will need to make a payment
Purchase one-time access:
Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online accessOne-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:
Subscribe to Journal of Clinical NeuroscienceAlready a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
References
- Spinal penetration index: new three-dimensional quantified reference for lordoscoliosis and other spinal deformities.J Orthop Sci. 2003; 8: 41-49
- Spinal penetration index assessment in adolescent idiopathic scoliosis using EOS low-dose biplanar stereoradiography.Eur Spine J. 2013; 22: 2438-2444
K. Ito N. Kawakami K. Miyasaka T. Tsuji T. Ohara A. Nohara Scoliosis associated with airflow obstruction due to endothoracic vertebral hump. Spine (Phila Pa 1976) 2012 ;37(25):2094-8.
- Factors of thoracic cage deformity that affect pulmonary function in adolescent idiopathic thoracic scoliosis.Spine (Phila Pa 1976). 2007; 32: 106-112
- 3-dimensional approach to spinal deformities: application to the study of the prognosis of pediatric scoliosis.Rev Chir Orthop Reparatrice Appar Mot. 1983; 69: 407-416
- Morphology of scoliosis: three-dimensional evolution.Orthopedics. 1987; 10: 909-915
- A three-dimensional radiographic comparison of Cotrel-Dubousset and Colorado instrumentations for the correction of idiopathic scoliosis.Spine (Phila Pa 1976). 2000; 25: 205-210
- Skalli W. Surgical correction of scoliosis by in situ contouring: a detorsion analysis.Spine (Phila Pa 1976). 2004; 29: 193-199
- Analyse infographique des déformations tridimensionnelles des vertébres scoliotiques.Ann Chir. 1997; 51: 868-874
- Diagnostic imaging of spinal deformities: reducing patients radiation dose with a new slotscanning X-ray imager.Spine (Phila Pa 1976). 2010; 35: 989-994
- Skalli W. Reliability of 3D reconstruction of the spine of mild scoliotic patients.Spine (Phila Pa 1976). 2007; 32: 568-573
- 3D reconstruction of the spine from biplanar X-rays using parametric models based on transversal and longitudinal inferences.Med Eng Phys. 2009; 31: 681-687
- Lazennec JY. EOS stereo-radiography system: whole-body simultaneous anteroposterior and lateral radiographs with very low radiation dose.Rev Chir Orthop Reparatrice Appar Motil. 2007; 93: 141e3
- 3D Evaluation of the acetabular coverage assessed by biplanar X-rays or single anteroposterior X-ray compared with CT-scan. Comput Methods Biomech.Biomed Eng. 2008; 11: 257e62
- Fast 3D reconstruction of the rib cage from biplanar radiographs.Med Biol Eng Comput. 2010; 48: 821e8
- Evaluation of a Three-dimensional reconstruction method of the rib cage of mild scoliotic patients.Spine Deform. 2013; 1: 321-327
- Thoracic scoliosis: exothoracic and endothoracic deformations and the spinal penetration index.Rev Chir Orthop Reparatrice Appar Mot. 2002 Feb; 88: 9-18
- Scoliosis and pulmonary function.Spine (Phila Pa 1976). 1984; 9: 220-222
- The rib-vertebra angle in the early diagnosis between resolving and progressive infantile scoliosis.J Bone Joint Surg Br. 1972; 54: 230-243
- EOS microdose protocol for the radiological follow-up of adolescent idiopathic scoliosis.Eur Spine J. 2016 Feb; 25: 526-531
- Comparison of 3-dimensional spinal reconstruction accuracy: biplanar radiographs with EOS versus computed tomography.Spine (Phila Pa 1976). 2012; 37: 1391-1397
- EOS® biplanar X-ray imaging: concept, developments, benefits, and limitations.J Child Orthop. 2016; 10: 1-14
- 3D-modeling of the spine using EOS imaging system: Inter-reader reproducibility and reliability.PLoS One. 2017; 12e0171258
Article info
Publication history
Published online: March 13, 2020
Accepted:
March 9,
2020
Received:
January 7,
2020
Presented at the 52nd Annual Meeting of the Japanese Scoliosis Society, Tokyo, Japan, at November 2–3, 2018Identification
Copyright
© 2020 Elsevier Ltd. All rights reserved.
