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European Radiology
Published in: European Radiology 8/2005

01-08-2005 | Musculoskeletal

CT volumetry of intravertebral cement after kyphoplasty. Comparison of polymethylmethacrylate and calcium phosphate in a 12-month follow-up

Authors: M. Libicher, M. Vetter, I. Wolf, G. Noeldge, C. Kasperk, I. Grafe, K. Da Fonseca, J. Hillmeier, P. J. Meeder, H. P. Meinzer, G. W. Kauffmann

Published in: European Radiology | Issue 8/2005

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Abstract

This study was intended to measure the volume of intravertebral cement after balloon kyphoplasty with high resolution computed tomography (CT) and dedicated software. Volume changes of biocompatible calcium phosphate cement (CPC) were detected during a follow-up of 12 months. Measurements were compared with a control group of patients treated with polymethylmethacrylate (PMMA). Twenty-three vertebrae (14 CPC, 9 PMMA) of 12 patients were examined with CT using an identical imaging protocol. Dedicated software was used to quantify intravertebral cement volume in subvoxel resolution by analyzing each cement implant with a density-weighted algorithm. The mean volume reduction of CPC was 0.08 ml after 12 months, which corresponds to an absorption rate of 2 vol%. However, the difference did not reach significance level (P>0.05). The mean error estimate was 0.005 ml, indicating excellent precision of the method. CT volumetry appears a precise tool for measurement of intravertebral cement volume. CT volumetry offers the possibility of in vivo measurement of CPC resorption.
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Metadata
Title
CT volumetry of intravertebral cement after kyphoplasty. Comparison of polymethylmethacrylate and calcium phosphate in a 12-month follow-up
Authors
M. Libicher
M. Vetter
I. Wolf
G. Noeldge
C. Kasperk
I. Grafe
K. Da Fonseca
J. Hillmeier
P. J. Meeder
H. P. Meinzer
G. W. Kauffmann
Publication date
01-08-2005
Publisher
Springer-Verlag
Published in
European Radiology / Issue 8/2005
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-005-2709-x

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