Does a spinal implant alter dual energy X-ray absorptiometry body composition measurements?


Autoři: Pei-Lin Hsiao aff001;  Shu-Feng Hsu aff002;  Po-Han Chen aff003;  Hsiao-Wei Tsai aff001;  Hsin-Ying Lu aff001;  Yue-Sheng Wang aff001;  Li-Wen Lee aff001
Působiště autorů: Department of Diagnostic Radiology, Chang Gung Memorial Hospital, Chiayi, Taiwan aff001;  Department of Nursing, Chang Gung Memorial Hospital, Chiayi, Taiwan aff002;  Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Yunlin, Taiwan aff003;  Department of Nursing, Chang Gung University of Science and Technology, Chiayi Campus, Taiwan aff004
Vyšlo v časopise: PLoS ONE 14(9)
Kategorie: Research Article
doi: 10.1371/journal.pone.0222758

Souhrn

Background

Most manufacturer manuals do not verify the use of dual energy X-ray absorptiometry for body composition analysis in subjects with a metal implant. This study aimed to quantify the effects of a spinal implant on body composition, and to determine whether unadjusted lean mass estimates are valid for patients with a spinal implant.

Methods

A total of 30 healthy subjects were recruited. Three consecutive scans were performed for each participant, one with and two without extraneous spinal implant, without repositioning between scans. Lean, fat and bone estimates in the total body, trunk and limb were measured.

Results

Precision errors for all total and regional body compositions were within the recommended ranges. Bone masses in the trunk and total body were significantly increased with spinal implant, and the increases exceeded the least significant change. For total and regional lean and fat estimates, the measurements between subjects with and without metal implants were in substantial to almost perfect agreement and the differences were not significant and did not exceed the least significant change.

Conclusions

Spinal metal artifacts significantly increased the total body and trunk bone mass but the differences in lean- and fat-related estimates at total and regional body levels and all estimates in the extremity remained within the clinical acceptable range. Thus, a spinal implant may not compromise screening of patients for fat and lean masses using dual energy X-ray absorptiometry. Application of image reconstruction or a filtering algorithm may help reduce the effect of metallic artifacts and further study is needed.

Klíčová slova:

Biology and life sciences – Bioengineering – Biotechnology – Medical devices and equipment – Medical implants – Titanium implants – Biochemistry – Lipids – Fats – Anatomy – Biological tissue – Connective tissue – Engineering and technology – Assistive technologies – Prosthetics – Medicine and health sciences – Bone – Bone density – Diagnostic medicine – Diagnostic radiology – Radiology and imaging – Research and analysis methods – Research assessment – Altmetrics – Article-level metrics – Imaging techniques – Bone imaging – X-ray radiography – Physical sciences – Chemistry – Chemical elements – Titanium


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2019 Číslo 9

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