The Effect of the Lumbar Vertebral Malpositioning on Bone Mineral Density Measurements of the Lumbar Spine by Dual-Energy X-Ray Absorptiometry

Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry
Sina IzadyarSeyed Salman Zakariaee

Abstract

A significant discrepancy between the results of previous human and phantoms studies is identified regarding the effects of vertebral positioning on bone mineral density (BMD) measurements. We aimed to evaluate the effects of lumbar vertebral positioning on BMD measurements by dual-energy X-ray absorptiometry in a human cadaveric spine phantom. A spine phantom was designed using L1-L4 vertebrae harvested from a 48-year-old male cadaver without coronal or sagittal deformity. The spine phantom was scanned by DEXXUM T bone densitometer in a constant scanning speed of 30 mm/s and resolution of 1.0 × 1.0 mm. BMD values were measured in a positive and negative lumbar lordosis and kyphosis tilt angles in the sagittal plane, from 0° to 35°, with 7° increments. Also BMD values were measured in axial and lateral rotations with 5° increments. Projectional dual-energy X-ray absorptiometry measurements are significantly affected by positioning of the lumbar spine, more severely affected by kyphotic curvature, but also by axial and lateral rotational scoliosis as well as lordotic curvature. Increasing the severity of lordosis and kyphosis curvatures leads to false reduction of BMD value up to 17.5% and 11.5%, respectively. Increasing the deg...Continue Reading

References

Oct 19, 2001·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·F P GirardiJ M Lane
Sep 16, 2005·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·Warren T K LeeJack Chun Yiu Cheng
Jun 3, 2008·Journal of Digital Imaging·Junhua ZhangYuanyuan Wang
Feb 5, 2014·The Spine Journal : Official Journal of the North American Spine Society·Yun Kyung JeonIn Joo Kim

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Citations

Feb 6, 2017·Bone·Sarah L Morgan, Ginnie L Prater
Jan 4, 2020·Archives of Osteoporosis·Genessis MaldonadoCarlos Rios
Apr 21, 2020·Canadian Association of Radiologists Journal = Journal L'Association Canadienne Des Radiologistes·Patrick MartineauWilliam D Leslie
Feb 25, 2021·Archives of Osteoporosis·Trevor L SchellPaul A Anderson

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