Universität zu Köln

Kroeger, Jan Robert, Hickethier, Tilman, Pahn, Gregor, Gerhardt, Felix, Maintz, David and Bunck, Alexander C. (2017). Influence of spectral detector CT based monoenergetic images on the computer-aided detection of pulmonary artery embolism. Eur. J. Radiol., 95. S. 242 - 249. CLARE: ELSEVIER IRELAND LTD. ISSN 1872-7727

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Abstract

Objective: To evaluate the influence of monoenergetic reconstructions using a spectral detector CT (SDCT) on the computer aided detection (CAD) of pulmonary artery embolism (PAE) on CT pulmonary angiography (CTPA) and CT in venous contrast phase (CTV). Material and Methods: A retrospective data base search identified 15 patients with CTPA and 18 patients with CTV and diagnosis of PAE. For these patients, monoenergetic (monoE) images at different energy levels or with a fixed attenuation in the pulmonary artery were generated and independently analyzed using a commercially available computer aided detection (CAD) tool. Attenuation in the pulmonary artery and in the embolus was measured. Results: For CTPA and CTV, in monoenergetic images the difference in attenuation between vessel and embolus was significantly higher than in conventional images. In CTPA the detection rate was highest in the > 500 HU monoE images with 67,9% detected emboli and 93,3% of patients correctly identified as having PAE. At the same time the false positive rate could be significantly reduced by using monoE images compared to conventional images. Detection rates for CTV were lower than in CTPA but were raised significantly by monoE reconstructions. Conclusions: The combination of SDCT and CAD improves the diagnostic accuracy of CAD and enables CAD interpretation of CTV.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kroeger, Jan Robert UNSPECIFIED UNSPECIFIED UNSPECIFIED Hickethier, Tilman UNSPECIFIED UNSPECIFIED UNSPECIFIED Pahn, Gregor UNSPECIFIED UNSPECIFIED UNSPECIFIED Gerhardt, Felix UNSPECIFIED UNSPECIFIED UNSPECIFIED Maintz, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Bunck, Alexander C. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-215396
DOI:	10.1016/j.ejrad.2017.08.034
Journal or Publication Title:	Eur. J. Radiol.
Volume:	95
Page Range:	S. 242 - 249
Date:	2017
Publisher:	ELSEVIER IRELAND LTD
Place of Publication:	CLARE
ISSN:	1872-7727
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PERFORMANCE EVALUATION; EMERGENCY-DEPARTMENT; TOMOGRAPHY; ANGIOGRAPHY; RADIOLOGISTS; QUALITY; EXPERIENCE; DIAGNOSIS; IMPACT Multiple languages Radiology, Nuclear Medicine & Medical Imaging Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/21539