Design and evaluation of an MRI compatible axial compression device for 3D assessment of spinal deformity and flexibility

Adam, Clayton J., Izatt, Maree T., & Askin, Geoffrey N. (2010) Design and evaluation of an MRI compatible axial compression device for 3D assessment of spinal deformity and flexibility. In Stanford, Ralph & Williamson, Owen (Eds.) Annual Scientific Meeting of the Spine Society of Australia, 9-11 April 2010, Christchurch Convention Centre, Christchurch. (Unpublished)

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Magnetic Resonance Imaging (MRI) offers a valuable research tool for the assessment of 3D spinal deformity in AIS, however the horizontal patient position imposed by conventional scanners removes the axial compressive loading on the spine which is an important determinant of deformity shape and magnitude in standing scoliosis patients. The objective of this study was to design, construct and test an MRI compatible compression device for research into the effect of axial loading on spinal deformity using supine MRI scans. The compression device was designed and constructed, consisting of a vest worn by the patient, which was attached via straps to a pneumatically actuated footplate. An applied load of 0.5 x bodyweight was remotely controlled by a unit in the scanner operator’s console. The entire device was constructed using non-metallic components for MRI compatibility. The device was evaluated by performing unloaded and loaded supine MRI scans on a series of 10 AIS patients. The study concluded that an MRI compatible compression device had been successfully designed and constructed, providing a research tool for studies into the effect of axial loading on 3D spinal deformity in scoliosis. The 3D axially loaded MR imaging capability developed in this study will allow future research investigations of the effect of axial loading on spinal rotation, and for imaging the response of scoliotic spinal tissues to axial loading.

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ID Code: 32836
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: adolescent idiopathic scoliosis, spinal deformity, axially loaded MRI, simulated gravitational loading, cobb angle, supine cobb angle, vertebral column
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > BIOMEDICAL ENGINEERING (090300) > Biomedical Engineering not elsewhere classified (090399)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > CLINICAL SCIENCES (110300) > Orthopaedics (110314)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2010 [please consult the authors]
Deposited On: 22 Jun 2010 21:42
Last Modified: 27 May 2011 14:57

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