Universität zu Köln

Grosser, Oliver S., Wybranski, Christian, Kupitz, Dennis, Powerski, Maciej, Mohnike, Konrad, Pech, Maciej, Amthauer, Holger and Ricke, Jens (2017). Improvement of image quality and dose management in CT fluoroscopy by iterative 3D image reconstruction. Eur. Radiol., 27 (9). S. 3625 - 3635. NEW YORK: SPRINGER. ISSN 1432-1084

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Abstract

The objective of this study was to assess the influence of an iterative CT reconstruction algorithm (IA), newly available for CT-fluoroscopy (CTF), on image noise, readers' confidence and effective dose compared to filtered back projection (FBP). Data from 165 patients (FBP/IA = 82/74) with CTF in the thorax, abdomen and pelvis were included. Noise was analysed in a large-diameter vessel. The impact of reconstruction and variables (e.g. X-ray tube current I) influencing noise and effective dose were analysed by ANOVA and a pairwise t-test with Bonferroni-Holm correction. Noise and readers' confidence were evaluated by three readers. Noise was significantly influenced by reconstruction, I, body region and circumference (all p ae currency 0.0002). IA reduced the noise significantly compared to FBP (p = 0.02). The effect varied for body regions and circumferences (p aecurrency 0.001). The effective dose was influenced by the reconstruction, body region, interventional procedure and I (all p ae currency 0.02). The inter-rater reliability for noise and readers' confidence was good (W ae yen 0.75, p < 0.0001). Noise and readers' confidence were significantly better in AIDR-3D compared to FBP (p ae currency> 0.03). Generally, IA yielded a significant reduction of the median effective dose. The CTF reconstruction by IA showed a significant reduction in noise and effective dose while readers' confidence increased. aEuro cent CTF is performed for image guidance in interventional radiology. aEuro cent Patient exposure was estimated from DLP documented by the CT. aEuro cent Iterative CT reconstruction is appropriate to reduce image noise in CTF. aEuro cent Using iterative CT reconstruction, the effective dose was significantly reduced in abdominal interventions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Grosser, Oliver S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wybranski, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED Kupitz, Dennis UNSPECIFIED UNSPECIFIED UNSPECIFIED Powerski, Maciej UNSPECIFIED UNSPECIFIED UNSPECIFIED Mohnike, Konrad UNSPECIFIED UNSPECIFIED UNSPECIFIED Pech, Maciej UNSPECIFIED UNSPECIFIED UNSPECIFIED Amthauer, Holger UNSPECIFIED UNSPECIFIED UNSPECIFIED Ricke, Jens UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-221175
DOI:	10.1007/s00330-017-4754-7
Journal or Publication Title:	Eur. Radiol.
Volume:	27
Number:	9
Page Range:	S. 3625 - 3635
Date:	2017
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1432-1084
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language FILTERED BACK-PROJECTION; COMPUTED-TOMOGRAPHY; SCATTERED RADIATION; PHYSICIANS HAND; PATIENT; REDUCTION; EXPOSURE; BIOPSIES; GUIDANCE Multiple languages Radiology, Nuclear Medicine & Medical Imaging Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/22117