Development of 3-D ultrasound system for assessment of Adolescent Idiopathic Scoliosis (AIS)

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

19 Citations (Scopus)

Abstract

AIS is defined as deformity of the spine in coronal plane with more than 10 degrees of Cobb's angle. Cobb's Method is the gold standard in monitoring patients that are susceptible to scoliosis development. The patients need to conduct an X-ray examination of the patient's whole spine regularly every 4 to 6 months until skeletal maturity is reached. However, there are less than 1% of the screened population and less than 10% of those with curves greater than 10 degrees warrant treatment. This previous finding implies that more than 90% of patients are subject to unnecessary radiation. It is clearly necessary to have a system that can provide AIS mass screening system and longitudinal follow-up for children without the hazard of radiation. The investigators successfully developed a 3D ultrasound system specifically for the assessment of AIS, which is a nonradiation assessment system. This system consists of a portable ultrasound scanner, a frame, an electromagnetic spatial sensing device, and a PC with a customized program. The images collected from subjects are displayed in 3D space corresponding to the spatial information collected. The frames which consist of spinous or traverse processes are selected for marking the processes' position. The tip of each process is manually assigned with a marker. A 3D model of spine which is formed by markers is exploited to measure spine deformity angle and rotation. In our phantom study, the phantoms were deformed to simulate AIS with different severities. These phantoms were taken coronal X-ray and 3D ultrasound imaging. The results obtained by the two methods were very close. This system not only provides a new way to assess AIS without radiation hazard but also provides additional new information on spine's 3D geometrical information. The system evidently indicates its potential as a complementary tool for X-ray Cobb's method.
Original languageEnglish
Title of host publication6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech
Pages584-587
Number of pages4
Volume31 IFMBE
DOIs
Publication statusPublished - 22 Oct 2010
Event6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech - Singapore, Singapore
Duration: 1 Aug 20106 Aug 2010

Conference

Conference6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech
Country/TerritorySingapore
CitySingapore
Period1/08/106/08/10

Keywords

  • 3D ultrasound
  • adolescent idiopathic scoliosis
  • assessment
  • freehand 3D ultrasound
  • imaging
  • Scoliosis
  • spine
  • ultrasound

ASJC Scopus subject areas

  • Biomedical Engineering
  • Bioengineering

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