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Kazimierczyk R, Kaminski KA, Nekolla SG. Cardiac PET/MRI: Recent Developments and Future Aspects. Semin Nucl Med 2024; 54:733-746. [PMID: 38853039 DOI: 10.1053/j.semnuclmed.2024.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 06/11/2024]
Abstract
Positron emission tomography/magnetic resonance (PET/MRI) hybrid imaging is now available for over a decade and although the quantity of installed systems is rather low, the number of emerging applications for cardiovascular diseases is still growing. PET/MRI provides integrated images of high quality anatomical and functional assessment obtained by MRI with the possibilities of PET for quantification of molecular parameters such as metabolism, inflammation, and perfusion. In recent years, sequential co-registration of myocardial tissue characterization with its molecular data had become an increasingly helpful tool in clinical practice and an integrated device simplifies this task. This review summarizes recent developments and future possibilities in the use of the PET/MRI in the diagnosis and treatment of cardiovascular disorders.
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Affiliation(s)
| | - Karol A Kaminski
- Department of Cardiology, Medical University of Bialystok, Bialystok, Poland; Department of Population Medicine and Lifestyle Diseases, Medical University of Bialystok, Bialystok, Poland
| | - Stephan G Nekolla
- Department of Nuclear Medicine, Technical University Munich, Ismaninger Str., Munich, Germany; DZKH (Deutsches Zentrum für Herz-Kreislauf-Forschung e.V.), partner site Munich Heart Alliance, Munich, Germany.
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2
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Whittington B, Dweck MR, van Beek EJR, Newby D, Williams MC. PET-MRI of Coronary Artery Disease. J Magn Reson Imaging 2023; 57:1301-1311. [PMID: 36524452 DOI: 10.1002/jmri.28554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 12/23/2022] Open
Abstract
Simultaneous positron emission tomography and magnetic resonance imaging (PET-MRI) combines the anatomical detail and tissue characterization of MRI with the functional information from PET. Within the coronary arteries, this hybrid technique can be used to identify biological activity combined with anatomically high-risk plaque features to better understand the processes underlying coronary atherosclerosis. Furthermore, the downstream effects of coronary artery disease on the myocardium can be characterized by providing information on myocardial perfusion, viability, and function. This review will describe the current capabilities of PET-MRI in coronary artery disease and discuss the limitations and future directions of this emerging technique. LEVEL OF EVIDENCE: 5 TECHNICAL EFFICACY: Stage 3.
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Affiliation(s)
- Beth Whittington
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
- Edinburgh Imaging Facility QMRI, University of Edinburgh, Edinburgh, UK
| | - Marc R Dweck
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
- Edinburgh Imaging Facility QMRI, University of Edinburgh, Edinburgh, UK
| | | | - David Newby
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
- Edinburgh Imaging Facility QMRI, University of Edinburgh, Edinburgh, UK
| | - Michelle C Williams
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
- Edinburgh Imaging Facility QMRI, University of Edinburgh, Edinburgh, UK
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3
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Bogdanovic B, Solari EL, Villagran Asiares A, McIntosh L, van Marwick S, Schachoff S, Nekolla SG. PET/MR Technology: Advancement and Challenges. Semin Nucl Med 2021; 52:340-355. [PMID: 34969520 DOI: 10.1053/j.semnuclmed.2021.11.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 01/07/2023]
Abstract
When this article was written, it coincided with the 11th anniversary of the installation of our PET/MR device in Munich. In fact, this was the first fully integrated device to be in clinical use. During this time, we have observed many interesting behaviors, to put it kindly. However, it is more critical that in this process, our understanding of the system also improved - including the advantages and limitations from a technical, logistical, and medical perspective. The last decade of PET/MRI research has certainly been characterized by most sites looking for a "key application." There were many ideas in this context and before and after the devices became available, some of which were based on the earlier work with integrating data from single devices. These involved validating classical PET methods with MRI (eg, perfusion or oncology diagnostics). More important, however, were the scenarios where intermodal synergies could be expected. In this review, we look back on this decade-long journey, at the challenges overcome and those still to come.
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Affiliation(s)
- Borjana Bogdanovic
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Esteban Lucas Solari
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Alberto Villagran Asiares
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Lachlan McIntosh
- Department of Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Sandra van Marwick
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Sylvia Schachoff
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Stephan G Nekolla
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany.
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Currie GM, Leon JL, Nevo E, Kamvosoulis PV. PET/MR Part 4: Clinical Applications of PET/MRI. J Nucl Med Technol 2021; 50:jnmt.121.263288. [PMID: 34872917 DOI: 10.2967/jnmt.121.263288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 10/25/2021] [Indexed: 11/16/2022] Open
Abstract
Position emission tomography (PET) and magnetic resonance imaging (MRI) as a hybrid modality provides novel imaging opportunities. While there are a very broad array of pathologies that could benefit from PET/MRI, there is only a narrow range of applications where benefit over standard care justifies the higher resource utilization and, in particular, offers a net positive trade-off over PET/CT. This benefit is generally associated with the omission of CT and the associated radiation dose from the patient workup. This manuscript provides a summary of the generally accepted clinical applications of PET/MRI in both adult and pediatric populations. While there are a number of potential applications and certainly exciting research that may expand applications in the future, the purpose of this paper was to focus on current, mainstream applications. This is the final manuscript in a four-part integrated series sponsored by the SNMMI-TS PET/MR Task Force in conjunction with the SNMMI-TS Publication Committee.
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Affiliation(s)
| | | | - Elad Nevo
- Lucile Packard Children's Hospital, United States
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Kersten J, Eberhardt N, Prasad V, Keßler M, Markovic S, Mörike J, Nita N, Stephan T, Tadic M, Tesfay T, Rottbauer W, Buckert D. Non-invasive Imaging in Patients With Chronic Total Occlusions of the Coronary Arteries-What Does the Interventionalist Need for Success? Front Cardiovasc Med 2021; 8:713625. [PMID: 34527713 PMCID: PMC8435679 DOI: 10.3389/fcvm.2021.713625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 08/06/2021] [Indexed: 10/26/2022] Open
Abstract
Chronic total occlusion (CTO) of coronary arteries is a common finding in patients with known or suspected coronary artery disease (CAD). Although tremendous advances have been made in the interventional treatment of CTOs over the past decade, correct patient selection remains an important parameter for achieving optimal results. Non-invasive imaging can make a valuable contribution. Ischemia and viability, two major factors in this regard, can be displayed using echocardiography, single-photon emission tomography, positron emission tomography, computed tomography, and cardiac magnetic resonance imaging. Each has its own strengths and weaknesses. Although most have been studied in patients with CAD in general, there is an increasing number of studies with positive preselectional factors for patients with CTOs. The aim of this review is to provide a structured overview of the current state of pre-interventional imaging for CTOs.
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Affiliation(s)
- Johannes Kersten
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Nina Eberhardt
- Department for Nuclear Medicine, University of Ulm, Ulm, Germany
| | - Vikas Prasad
- Department for Nuclear Medicine, University of Ulm, Ulm, Germany
| | - Mirjam Keßler
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Sinisa Markovic
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Johannes Mörike
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Nicoleta Nita
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Tilman Stephan
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Marijana Tadic
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | - Temsgen Tesfay
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
| | | | - Dominik Buckert
- Department for Internal Medicine II, University of Ulm, Ulm, Germany
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Munoz C, Ellis S, Nekolla SG, Kunze KP, Vitadello T, Neji R, Botnar RM, Schnabel JA, Reader AJ, Prieto C. MR-guided motion-corrected PET image reconstruction for cardiac PET-MR. J Nucl Med 2021; 62:jnumed.120.254235. [PMID: 34049978 PMCID: PMC8612202 DOI: 10.2967/jnumed.120.254235] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 03/09/2021] [Accepted: 03/09/2021] [Indexed: 11/16/2022] Open
Abstract
Simultaneous PET-MR imaging has shown potential for the comprehensive assessment of myocardial health from a single examination. Furthermore, MR-derived respiratory motion information has been shown to improve PET image quality by incorporating this information into the PET image reconstruction. Separately, MR-based anatomically guided PET image reconstruction has been shown to perform effective denoising, but this has been so far demonstrated mainly in brain imaging. To date the combined benefits of motion compensation and anatomical guidance have not been demonstrated for myocardial PET-MR imaging. This work addresses this by proposing a single cardiac PET-MR image reconstruction framework which fully utilises MR-derived information to allow both motion compensation and anatomical guidance within the reconstruction. Methods: Fifteen patients underwent a 18F-FDG cardiac PET-MR scan with a previously introduced acquisition framework. The MR data processing and image reconstruction pipeline produces respiratory motion fields and a high-resolution respiratory motion-corrected MR image with good tissue contrast. This MR-derived information was then included in a respiratory motion-corrected, cardiac-gated, anatomically guided image reconstruction of the simultaneously acquired PET data. Reconstructions were evaluated by measuring myocardial contrast and noise and compared to images from several comparative intermediate methods using the components of the proposed framework separately. Results: Including respiratory motion correction, cardiac gating, and anatomical guidance significantly increased contrast. In particular, myocardium-to-blood pool contrast increased by 143% on average (p<0.0001) compared to conventional uncorrected, non-guided PET images. Furthermore, anatomical guidance significantly reduced image noise compared to non-guided image reconstruction by 16.1% (p<0.0001). Conclusion: The proposed framework for MR-derived motion compensation and anatomical guidance of cardiac PET data was shown to significantly improve image quality compared to alternative reconstruction methods. Each component of the reconstruction pipeline was shown to have a positive impact on the final image quality. These improvements have the potential to improve clinical interpretability and diagnosis based on cardiac PET-MR images.
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Affiliation(s)
- Camila Munoz
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Sam Ellis
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Stephan G. Nekolla
- Nuklearmedizinische Klinik und Poliklinik, Technische Technical University of Munich, Munich, Germany
| | - Karl P. Kunze
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
- MR Research Collaborations, Siemens Healthcare, Frimley, United Kingdom
| | - Teresa Vitadello
- Department of Internal Medicine I, University Hospital Rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany; and
| | - Radhouene Neji
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
- MR Research Collaborations, Siemens Healthcare, Frimley, United Kingdom
| | - Rene M. Botnar
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
- Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Julia A. Schnabel
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Andrew J. Reader
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Claudia Prieto
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
- Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Santiago, Chile
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Rischpler C, Schlosser T, Umutlu L, Rassaf T, Krause BJ. [What actually happens … in hybrid imaging?]. Radiologe 2021; 60:1153-1161. [PMID: 33215289 DOI: 10.1007/s00117-020-00779-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
CLINICAL/METHODOLOGICAL ISSUE The goal of this article is to shed light on innovations in perfusion imaging and the fields of application that have opened up in hybrid imaging of the heart. STANDARD RADIOLOGICAL METHODS As before, the most commonly used modalities in hybrid imaging are single photon emission computed tomography (SPECT) and positron emission tomography/computed tomography (PET/CT). Perfusion tracers and the radioactively labeled glucose analog 18F‑fluorodeoxyglucose (FDG) are commonly used for vitality imaging. METHODICAL INNOVATIONS Use of PET/MRI (magnetic resonance imaging) is becoming increasingly widespread. In addition, FDG is also increasingly applied in imaging infectious and inflammatory myocardial diseases. Furthermore, novel tracers are used, such as the amyloid-specific tracers in cardiac amyloidosis. PERFORMANCE Overall, this development has led to an increasing use of hybrid imaging techniques. These still include myocardial perfusion imaging, but are also used in inflammatory and infectious diseases such as endocarditis, myocarditis and sarcoidosis, as well as in underestimated diseases such as cardiac amyloidosis. The use of tracers has led to the creation of new fields of application in hybrid imaging. PRACTICAL RECOMMENDATIONS Hybrid imaging combining myocardial perfusion and coronary visualization seems to be particularly advantageous in complex cases such as multivessel disease. In infectious and inflammatory myocardial diseases, FDG PET/CT or PET/MRI has clearly demonstrated its added value. New fields of application are very promising, but their significance has yet to be clearly demonstrated.
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Affiliation(s)
- C Rischpler
- Klinik für Nuklearmedizin, Universitätsklinikum Essen, Universität Duisburg-Essen, Hufelandstr. 55, 45147, Essen, Deutschland.
| | - T Schlosser
- Institut für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Deutschland
| | - L Umutlu
- Institut für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Deutschland
| | - T Rassaf
- Westdeutsches Herz- und Gefäßzentrum, Klinik für Kardiologie und Angiologie, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Deutschland
| | - B J Krause
- Klinik und Poliklinik für Nuklearmedizin, Universitätsmedizin Rostock, Rostock, Deutschland
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Congestive Heart Failure. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00050-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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