Universität zu Köln

Neuhaus, Victor, Hokamp, Nils Grosse, Abdullayev, Nuran ORCID: 0000-0003-4522-537X, Maus, Volker, Kabbasch, Christoph, Mpotsaris, Anastasios ORCID: 0000-0002-1275-8164, Maintz, David and Borggrefe, Jan ORCID: 0000-0003-2908-7560 (2018). Comparison of virtual monoenergetic and polyenergetic images reconstructed from dual-layer detector CT angiography of the head and neck. Eur. Radiol., 28 (3). S. 1102 - 1111. NEW YORK: SPRINGER. ISSN 1432-1084

Full text not available from this repository.

Abstract

To compare the image quality of virtual monoenergetic images and polyenergetic images reconstructed from dual-layer detector CT angiography (DLCTA). Thirty patients who underwent DLCTA of the head and neck were retrospectively identified and polyenergetic as well as virtual monoenergetic images (40 to 120 keV) were reconstructed. Signals (+/- SD) of the cervical and cerebral vessels as well as lateral pterygoid muscle and the air surrounding the head were measured to calculate the CNR and SNR. In addition, subjective image quality was assessed using a 5-point Likert scale. Student's t-test and Wilcoxon test were used to determine statistical significance. Compared to polyenergetic images, although noise increased with lower keV, CNR (p < 0.02) and SNR (p > 0.05) of the cervical, petrous and intracranial vessels were improved in virtual monoenergetic images at 40 keV and virtual monoenergetic images at 45 keV were also rated superior regarding vascular contrast, assessment of arteries close to the skull base and small arterial branches (p < 0.0001 each). Compared to polyenergetic images, virtual monoenergetic images reconstructed from DLCTA at low keV ranging from 40 to 45 keV improve the objective and subjective image quality of extra- and intracranial vessels and facilitate assessment of vessels close to the skull base and of small arterial branches.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Neuhaus, Victor UNSPECIFIED UNSPECIFIED UNSPECIFIED Hokamp, Nils Grosse UNSPECIFIED UNSPECIFIED UNSPECIFIED Abdullayev, Nuran UNSPECIFIED orcid.org/0000-0003-4522-537X UNSPECIFIED Maus, Volker UNSPECIFIED UNSPECIFIED UNSPECIFIED Kabbasch, Christoph UNSPECIFIED UNSPECIFIED UNSPECIFIED Mpotsaris, Anastasios UNSPECIFIED orcid.org/0000-0002-1275-8164 UNSPECIFIED Maintz, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Borggrefe, Jan UNSPECIFIED orcid.org/0000-0003-2908-7560 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-193354
DOI:	10.1007/s00330-017-5081-8
Journal or Publication Title:	Eur. Radiol.
Volume:	28
Number:	3
Page Range:	S. 1102 - 1111
Date:	2018
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1432-1084
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language COMPUTED TOMOGRAPHIC ANGIOGRAPHY; KILOELECTRON VOLT SETTINGS; ENERGY CT; MATERIAL DECOMPOSITION; QUALITY; OPTIMIZATION; CONTRAST; ABDOMEN; ALGORITHM; STROKE Multiple languages Radiology, Nuclear Medicine & Medical Imaging Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19335