Myocardial Late Iodine Enhancement and Extracellular Volume Quantification with Dual-Layer Spectral Detector Dual-Energy Cardiac CT.


Journal

Radiology. Cardiothoracic imaging
ISSN: 2638-6135
Titre abrégé: Radiol Cardiothorac Imaging
Pays: United States
ID NLM: 101748663

Informations de publication

Date de publication:
Apr 2019
Historique:
received: 29 07 2018
revised: 01 02 2019
accepted: 06 02 2019
entrez: 29 3 2021
pubmed: 25 4 2019
medline: 25 4 2019
Statut: epublish

Résumé

To explore the usefulness of myocardial late iodine enhancement (LIE) and extracellular volume (ECV) quantification by using dual-energy cardiac CT. In this single-center retrospective study, a total of 40 patients were evaluated with LIE CT by using a dual-layer spectral detector CT system. Among these, 21 also underwent cardiac MRI. Paired image sets were created by using standard imaging at 120 kVp, virtual monochromatic imaging (VMI) at 50 keV, and iodine density imaging. The contrast-to-noise ratio and image quality were then compared. Two observers assessed the presence of LIE and calculated the interobserver agreements. Agreement between CT and cardiac MRI when detecting late-enhancing lesions and calculating the ECV was also assessed. The contrast-to-noise ratio was significantly higher by using VMI than by using standard 120-kVp imaging, and the mean visual image quality score was significantly higher by using VMI than by using either standard or iodine density imaging. For interobserver agreement of visual detection of LIE, the agreement for VMI was excellent and the κ value (κ, 0.87) was higher than that for the standard 120-kVp (κ, 0.70) and iodine density (κ, 0.83) imaging. For detecting late-enhancing lesions, agreement with cardiac MRI was excellent by using VMI (κ, 0.90) and iodine density imaging (κ, 0.87) but was only good by using standard 120-kVp imaging (κ, 0.66). Quantitative comparisons of the ECV calculations by using CT and cardiac MRI showed excellent correlation ( Dual-energy cardiac CT can assess myocardial LIE and quantify ECV, with results comparable to those obtained by using cardiac MRI.© RSNA, 2019See also the commentary by Litt in this issue.

Identifiants

pubmed: 33778497
doi: 10.1148/ryct.2019180003
pmc: PMC7977749
doi:

Types de publication

Journal Article

Langues

eng

Pagination

e180003

Commentaires et corrections

Type : CommentIn

Informations de copyright

2019 by the Radiological Society of North America, Inc.

Déclaration de conflit d'intérêts

Disclosures of Conflicts of Interest: S.O. disclosed no relevant relationships. T.E. disclosed no relevant relationships. T.N. disclosed no relevant relationships. M.K. disclosed no relevant relationships. D.U. disclosed no relevant relationships. Y.F. disclosed no relevant relationships. Y.N. disclosed no relevant relationships. S.T. disclosed no relevant relationships. M.U. disclosed no relevant relationships. T.Y. disclosed no relevant relationships. K.T. disclosed no relevant relationships. Y.A. disclosed no relevant relationships. Y.Y. disclosed no relevant relationships.

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Auteurs

Seitaro Oda (S)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Takafumi Emoto (T)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Takeshi Nakaura (T)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Masafumi Kidoh (M)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Daisuke Utsunomiya (D)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Yoshinori Funama (Y)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Yasunori Nagayama (Y)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Seiji Takashio (S)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Mitsuharu Ueda (M)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Taro Yamashita (T)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Kenichi Tsujita (K)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Yukio Ando (Y)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Yasuyuki Yamashita (Y)

Departments of Diagnostic Radiology (S.O., T.N., M.K., D.U., Y.N., Y.Y.), Medical Physics (Y.F.), Cardiology (S.T., K.T.), and Neurology (M.U., T.Y., Y.A.), Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjyo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Central Radiology, Kumamoto University Hospital, Kumamoto, Japan (T.E.).

Classifications MeSH