Universität zu Köln

Pennig, Lenhard, Zopfs, David, Gertz, Roman, Bremm, Johannes, Zaeske, Charlotte, Hokamp, Nils Grosse, Celik, Erkan, Goertz, Lukas, Langenbach, Marcel, Persigehl, Thorsten, Gupta, Amit ORCID: 0000-0001-5345-6763, Borggrefe, Jan ORCID: 0000-0003-2908-7560, Lennartz, Simon and Laukamp, Kai Roman (2021). Reduction of CT artifacts from cardiac implantable electronic devices using a combination of virtual monoenergetic images and post-processing algorithms. Eur. Radiol., 31 (9). S. 7151 - 7162. NEW YORK: SPRINGER. ISSN 1432-1084

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Abstract

Objectives To evaluate the reduction of artifacts from cardiac implantable electronic devices (CIEDs) by virtual monoenergetic images (VMI), metal artifact reduction (MAR) algorithms, and their combination (VMIMAR) derived from spectral detector CT (SDCT) of the chest compared to conventional CT images (CI). Methods In this retrospective study, we included 34 patients (mean age 74.6 +/- 8.6 years), who underwent a SDCT of the chest and had a CIED in place. CI, MAR, VMI, and VMIMAR (10 keV increment, range: 100-200 keV) were reconstructed. Mean and standard deviation of attenuation (HU) among hypo- and hyperdense artifacts adjacent to CIED generator and leads were determined using ROIs. Two radiologists qualitatively evaluated artifact reduction and diagnostic assessment of adjacent tissue. Results Compared to CI, MAR and VMIMAR >= 100 keV significantly increased attenuation in hypodense and significantly decreased attenuation in hyperdense artifacts at CIED generator and leads (p < 0.05). VMI >= 100 keV alone only significantly decreased hyperdense artifacts at the generator (p < 0.05). Qualitatively, VMI >= 100 keV, MAR, and VMIMAR >= 100 keV provided significant reduction of hyper- and hypodense artifacts resulting from the generator and improved diagnostic assessment of surrounding structures (p < 0.05). Diagnostic assessment of structures adjoining to the leads was only improved by MAR and VMIMAR 100 keV (p < 0.05), whereas keV values >= 140 with and without MAR significantly worsened diagnostic assessment (p < 0.05). Conclusions The combination of VMI and MAR as well as MAR as a standalone approach provides effective reduction of artifacts from CIEDs. Still, higher keV values should be applied with caution due to a loss of soft tissue and vessel contrast along the leads.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pennig, Lenhard UNSPECIFIED UNSPECIFIED UNSPECIFIED Zopfs, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Gertz, Roman UNSPECIFIED UNSPECIFIED UNSPECIFIED Bremm, Johannes UNSPECIFIED UNSPECIFIED UNSPECIFIED Zaeske, Charlotte UNSPECIFIED UNSPECIFIED UNSPECIFIED Hokamp, Nils Grosse UNSPECIFIED UNSPECIFIED UNSPECIFIED Celik, Erkan UNSPECIFIED UNSPECIFIED UNSPECIFIED Goertz, Lukas UNSPECIFIED UNSPECIFIED UNSPECIFIED Langenbach, Marcel UNSPECIFIED UNSPECIFIED UNSPECIFIED Persigehl, Thorsten UNSPECIFIED UNSPECIFIED UNSPECIFIED Gupta, Amit UNSPECIFIED orcid.org/0000-0001-5345-6763 UNSPECIFIED Borggrefe, Jan UNSPECIFIED orcid.org/0000-0003-2908-7560 UNSPECIFIED Lennartz, Simon UNSPECIFIED UNSPECIFIED UNSPECIFIED Laukamp, Kai Roman UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-595296
DOI:	10.1007/s00330-021-07746-8
Journal or Publication Title:	Eur. Radiol.
Volume:	31
Number:	9
Page Range:	S. 7151 - 7162
Date:	2021
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1432-1084
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Radiology, Nuclear Medicine & Medical Imaging Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/59529