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CardioVascular and Interventional Radiology

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01-11-2008 | Technical Note

Detection of Cement Leakage After Vertebroplasty with a Non-Flat-Panel Angio Unit Compared to Multidetector Computed Tomography—An Ex Vivo Study

Authors: Clemens Baumann, Heiko Fuchs, Kerstin Westphalen, Johannes Hierholzer

Published in: CardioVascular and Interventional Radiology | Issue 6/2008

Abstract

The purpose of this study was to investigate the detection of cement leakages after vertebroplasty using angiographic computed tomography (ACT) in a non-flat-panel angio unit compared to multidetector computed tomography (MDCT). Vertebroplasty was performed in 19 of 33 cadaver vertebrae (23 thoracic and 10 lumbar segments). In the angio suite, ACT (190°; 1.5° per image) was performed to obtain volumetric data. Another volumetric data set of the specimen was obtained by MDCT using a standard algorithm. Nine multiplanar reconstructions in standardized axial, coronal, and sagittal planes of every vertebra were generated from both data sets. Images were evaluated on the basis of a nominal scale with 18 criteria, comprising osseous properties (e.g., integrity of the end plate) and cement distribution (e.g., presence of intraspinal cement). MDCT images were regarded as gold standard and analyzed by two readers in a consensus mode. Rotational acquisitions were analyzed by six blinded readers. Results were correlated with the gold standard using Cohen’s κ-coefficient analysis. Furthermore, interobserver variability was calculated. Correlation with the gold standard ranged from no correlation (osseous margins of the neuroforamen, κ = 0.008) to intermediate (trace of vertebroplasty canula; κ = 0.615) for criteria referring to osseous morphology. However, there was an excellent correlation for those criteria referring to cement distribution, with κ values ranging from 0.948 (paravertebral cement distribution) to 0.972 (intraspinal cement distribution). With a minimum of κ = 0.768 (“good correlation”) and a maximum of κ = 0.91 (“excellent”), interobserver variability was low. In conclusion, ACT in an angio suite without a flat-panel detector depicts a cement leakage after vertebroplasty as well as MDCT. However, the method does not provide sufficient depiction of osseous morphology.

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Title: Detection of Cement Leakage After Vertebroplasty with a Non-Flat-Panel Angio Unit Compared to Multidetector Computed Tomography—An Ex Vivo Study
Authors: Clemens Baumann
Heiko Fuchs
Kerstin Westphalen
Johannes Hierholzer
Publication date: 01-11-2008
Publisher: Springer-Verlag
Published in: CardioVascular and Interventional Radiology / Issue 6/2008
Print ISSN: 0174-1551
Electronic ISSN: 1432-086X
DOI: https://doi.org/10.1007/s00270-008-9385-6

At a glance: The STEP trials

Springer Medicine

Detection of Cement Leakage After Vertebroplasty with a Non-Flat-Panel Angio Unit Compared to Multidetector Computed Tomography—An Ex Vivo Study

Abstract

At a glance: The STEP trials

Springer Medicine

Abstract

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