Universität zu Köln

Grunz, Jan-Peter ORCID: 0000-0002-4524-1620, Petritsch, Bernhard, Luetkens, Karsten Sebastian, Kunz, Andreas Steven, Lennartz, Simon, Ergun, Suleyman, Bley, Thorsten Alexander and Huflage, Henner ORCID: 0000-0002-2784-3257 (2022). Ultra-Low-Dose Photon-Counting CT Imaging of the Paranasal Sinus With Tin Prefiltration How Low Can We Go? Invest. Radiol., 57 (11). S. 728 - 734. PHILADELPHIA: LIPPINCOTT WILLIAMS & WILKINS. ISSN 1536-0210

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Abstract

Objectives In this study, we compared photon-counting detector computed tomography (PCD-CT) and energy-integrating detector computed tomography (EID-CT) for ultra-low-dose paranasal sinus examinations with employed tin prefiltration. The goal of our investigation was to define the most dose-effective scan protocols for diagnostic assessment of midface trauma, preoperative sinonasal anatomy, and acute rhinosinusitis. Materials and Methods Five cadaveric heads were examined with the standard-resolution scan mode of both CT systems using a tube potential of 100 kV and tin prefiltration for 7 dose-equivalent scan protocols (CTDIvol = 4.16-0.15 mGy) and 2 additional ultra-low-dose protocols exclusively feasible on the PCD-CT scanner (0.10 and 0.08 mGy). After applying comparable iterative reconstruction algorithms, image quality was subjectively assessed by 4 radiologists. The intraclass correlation coefficient was calculated to estimate the agreement among readers. Image noise was quantified in standardized regions of interest to establish an additional quantitative criterion of image quality. Results The most dose-effective scan protocols for diagnostic imaging of midface trauma (PCD-CT: 1.24 mGy; EID-CT: 2.05 mGy), preoperative sinonasal anatomy (PCD-CT: 0.20 mGy; EID-CT: 0.40 mGy), and acute rhinosinusitis (PCD-CT: 0.08 mGy; EID-CT: 0.15 mGy) required less radiation exposure on the PCD-CT system (P < 0.050). Despite higher image noise, ultra-low-dose PCD-CT studies (0.08 and 0.10 mGy) were considered suitable for inflammation-focused imaging, offering lower-dose penalties than EID-CT studies. Interobserver reliability for subjective image quality was excellent (intraclass correlation coefficient, 0.90; 95% confidence interval, 0.88-0.93; P < 0.001). Conclusions In paranasal sinus imaging with tin prefiltration, the PCD-CT allowed for superior image quality compared with high-end EID-CT. Assessment of paranasal sinuses with an ultra-low radiation exposure of 0.08 mGy was deemed adequate, suggesting substantial dose reduction potential for clinical routine, for example, in the diagnostic workup of patients with rhinosinusitis.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Grunz, Jan-Peter UNSPECIFIED orcid.org/0000-0002-4524-1620 UNSPECIFIED Petritsch, Bernhard UNSPECIFIED UNSPECIFIED UNSPECIFIED Luetkens, Karsten Sebastian UNSPECIFIED UNSPECIFIED UNSPECIFIED Kunz, Andreas Steven UNSPECIFIED UNSPECIFIED UNSPECIFIED Lennartz, Simon UNSPECIFIED UNSPECIFIED UNSPECIFIED Ergun, Suleyman UNSPECIFIED UNSPECIFIED UNSPECIFIED Bley, Thorsten Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Huflage, Henner UNSPECIFIED orcid.org/0000-0002-2784-3257 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-670386
DOI:	10.1097/RLI.0000000000000887
Journal or Publication Title:	Invest. Radiol.
Volume:	57
Number:	11
Page Range:	S. 728 - 734
Date:	2022
Publisher:	LIPPINCOTT WILLIAMS & WILKINS
Place of Publication:	PHILADELPHIA
ISSN:	1536-0210
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language COMPUTED-TOMOGRAPHY; ITERATIVE RECONSTRUCTION; RELIABILITY; REDUCTION; QUALITY Multiple languages Radiology, Nuclear Medicine & Medical Imaging Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67038