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Reinstadler SJ, Stiermaier T, Reindl M, Feistritzer HJ, Fuernau G, Eitel C, Desch S, Klug G, Thiele H, Metzler B, Eitel I. Intramyocardial haemorrhage and prognosis after ST-elevation myocardial infarction. Eur Heart J Cardiovasc Imaging 2018; 20:138-146. [DOI: 10.1093/ehjci/jey101] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 08/19/2018] [Indexed: 12/12/2022] Open
Affiliation(s)
- Sebastian J Reinstadler
- Department of Cardiology, Angiology and Intensive Care Medicine, University Heart Center Lübeck, Medical Clinic II, University of Lübeck, Ratzeburger Allee 160, Lübeck, Germany
- German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck, Ratzeburger Allee 160, Lübeck, Germany
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstraße 35, Innsbruck, Austria
| | - Thomas Stiermaier
- Department of Cardiology, Angiology and Intensive Care Medicine, University Heart Center Lübeck, Medical Clinic II, University of Lübeck, Ratzeburger Allee 160, Lübeck, Germany
- German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck, Ratzeburger Allee 160, Lübeck, Germany
| | - Martin Reindl
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstraße 35, Innsbruck, Austria
| | - Hans-Josef Feistritzer
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstraße 35, Innsbruck, Austria
| | - Georg Fuernau
- Department of Cardiology, Angiology and Intensive Care Medicine, University Heart Center Lübeck, Medical Clinic II, University of Lübeck, Ratzeburger Allee 160, Lübeck, Germany
- German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck, Ratzeburger Allee 160, Lübeck, Germany
| | - Charlotte Eitel
- Department of Cardiology, Angiology and Intensive Care Medicine, University Heart Center Lübeck, Medical Clinic II, University of Lübeck, Ratzeburger Allee 160, Lübeck, Germany
- German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck, Ratzeburger Allee 160, Lübeck, Germany
| | - Steffen Desch
- Department of Cardiology, Angiology and Intensive Care Medicine, University Heart Center Lübeck, Medical Clinic II, University of Lübeck, Ratzeburger Allee 160, Lübeck, Germany
- German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck, Ratzeburger Allee 160, Lübeck, Germany
| | - Gert Klug
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstraße 35, Innsbruck, Austria
| | - Holger Thiele
- Department of Cardiology, Angiology and Intensive Care Medicine, University Heart Center Lübeck, Medical Clinic II, University of Lübeck, Ratzeburger Allee 160, Lübeck, Germany
- German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck, Ratzeburger Allee 160, Lübeck, Germany
| | - Bernhard Metzler
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstraße 35, Innsbruck, Austria
| | - Ingo Eitel
- Department of Cardiology, Angiology and Intensive Care Medicine, University Heart Center Lübeck, Medical Clinic II, University of Lübeck, Ratzeburger Allee 160, Lübeck, Germany
- German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck, Ratzeburger Allee 160, Lübeck, Germany
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Chen W, Zhang B, Xia R, Zhang R, Xu Z, Chen Y, Wang C, Wang L, Zheng J, Gao F. T2 mapping at 7T MRI can quantitatively assess intramyocardial hemorrhage in rats with acute reperfused myocardial infarction in vivo. J Magn Reson Imaging 2016; 44:194-203. [PMID: 26762612 DOI: 10.1002/jmri.25145] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 12/18/2015] [Accepted: 12/20/2015] [Indexed: 02/05/2023] Open
Abstract
PURPOSE To investigate T2 mapping at 7T magnetic resonance imaging (MRI) for the detection and quantification of reperfused intramyocardial hemorrhage (IMH) in a rat model. MATERIALS AND METHODS Myocardial infarction (MI) was induced in 25 female rats. Rats were scanned at a 7T MRI 48 hours after reperfusion, using T2 mapping and late gadolinium enhancement imaging. Gross sections of the left ventricular myocardium and corresponding hematoxylin and eosin staining were assessed for IMH. T2 mapping images were matched with the gross sections. The IMH volume, expressed as a percentage of the left ventricular myocardial volume, of each heart determined by T2 mapping was compared with that calculated by pathological gross examination. RESULTS Six rats died. In all, 97 gross sections of the left ventricular myocardium from the 19 rats were matched with T2 mapping images. IMH occurred pathologically in 68 gross sections, which was detected as hypointense cores by T2 mapping in 63 images (93% sensitivity). Three T2 mapping images with hypointense cores showed no hemorrhage on pathological sections (90% specificity). The positive and negative predictive values of hemorrhage on T2 mapping were 95% and 84%, respectively. In terms of the IMH volume, there was no significant difference between T2 mapping and pathological gross measurements (4.8 ± 2.4% vs. 5.3 ± 3.2%; P = 0.11). CONCLUSION T2 mapping at 7T MRI can reliably detect and quantify IMH in rats in vivo. This may be useful as a noninvasive quantitative approach to investigating the mechanisms and evolution of MI and reperfusion injury. J. Magn. Reson. Imaging 2016;44:194-203.
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Affiliation(s)
- Wei Chen
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China.,Department of Radiology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Bing Zhang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Rui Xia
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China.,Department of Radiology, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ruzhi Zhang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Ziqian Xu
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Yushu Chen
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Chunhua Wang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Lei Wang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Jie Zheng
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Fabao Gao
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
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