1
|
Koppara T, Dregely I, Nekolla SG, Nährig J, Langwieser N, Bradaric C, Ganter C, Laugwitz KL, Schwaiger M, Ibrahim T. Simultaneous 18-FDG PET and MR imaging in lower extremity arterial disease. Front Cardiovasc Med 2024; 11:1352696. [PMID: 38404725 PMCID: PMC10884315 DOI: 10.3389/fcvm.2024.1352696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 01/22/2024] [Indexed: 02/27/2024] Open
Abstract
Background Simultaneous positron emission tomography (PET) and magnetic resonance imaging (MRI) is a novel hybrid imaging method integrating the advances of morphological tissue characterization of MRI with the pathophysiological insights of PET applications. Aim This study evaluated the use of simultaneous 18-FDG PET/MR imaging for characterizing atherosclerotic lesions in lower extremity arterial disease (LEAD). Methods Eight patients with symptomatic stenoses of the superficial femoral artery (SFA) under simultaneous acquisition of 18-FDG PET and contrast-enhanced MRI using an integrated whole-body PET/MRI scanner. Invasive plaque characterization of the SFA was performed by intravascular imaging using optical coherence tomography. Histological analysis of plaque specimens was performed after directional atherectomy. Results MRI showed contrast enhancement at the site of arterial stenosis, as assessed on T2-w and T1-w images, compared to a control area of the contralateral SFA (0.38 ± 0.15 cm vs. 0.23 ± 0.11 cm; 1.77 ± 0.19 vs. 1.57 ± 0.15; p-value <0.05). On PET imaging, uptake of 18F-FDG (target-to-background ratio TBR > 1) at the level of symptomatic stenosis was observed in all but one patient. Contrast medium-induced MR signal enhancement was detected in all plaques, whereas FDG uptake in PET imaging was increased in lesions with active fibroatheroma and reduced in fibrocalcified lesions. Conclusion In this multimodal imaging study, we report the feasibility and challenges of simultaneous PET/MR imaging of LEAD, which might offer new perspectives for risk estimation.
Collapse
Affiliation(s)
- Tobias Koppara
- Department of Internal Medicine I, Cardiology and Angiology, School of Medicine and Health, Technical University of Munich, Munich, Germany
- DZHK (German Center for Cardiovascular Research)—Partner Site Munich Heart Alliance, Munich, Germany
| | - Isabel Dregely
- Department of Nuclear Medicine, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Stephan G. Nekolla
- DZHK (German Center for Cardiovascular Research)—Partner Site Munich Heart Alliance, Munich, Germany
- Department of Nuclear Medicine, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Jörg Nährig
- Institute of Pathology, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Nicolas Langwieser
- Department of Internal Medicine I, Cardiology and Angiology, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Christian Bradaric
- Department of Internal Medicine I, Cardiology and Angiology, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Carl Ganter
- Institute of Radiology, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Karl-Ludwig Laugwitz
- Department of Internal Medicine I, Cardiology and Angiology, School of Medicine and Health, Technical University of Munich, Munich, Germany
- DZHK (German Center for Cardiovascular Research)—Partner Site Munich Heart Alliance, Munich, Germany
| | - Markus Schwaiger
- DZHK (German Center for Cardiovascular Research)—Partner Site Munich Heart Alliance, Munich, Germany
- Department of Nuclear Medicine, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Tareq Ibrahim
- Department of Internal Medicine I, Cardiology and Angiology, School of Medicine and Health, Technical University of Munich, Munich, Germany
| |
Collapse
|
2
|
Wang X, Nai YH, Gan J, Lian CPL, Ryan FK, Tan FSL, Chan DYS, Ng JJ, Lo ZJ, Chong TT, Hausenloy DJ. Multi-Modality Imaging of Atheromatous Plaques in Peripheral Arterial Disease: Integrating Molecular and Imaging Markers. Int J Mol Sci 2023; 24:11123. [PMID: 37446302 DOI: 10.3390/ijms241311123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/14/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
Peripheral artery disease (PAD) is a common and debilitating condition characterized by the narrowing of the limb arteries, primarily due to atherosclerosis. Non-invasive multi-modality imaging approaches using computed tomography (CT), magnetic resonance imaging (MRI), and nuclear imaging have emerged as valuable tools for assessing PAD atheromatous plaques and vessel walls. This review provides an overview of these different imaging techniques, their advantages, limitations, and recent advancements. In addition, this review highlights the importance of molecular markers, including those related to inflammation, endothelial dysfunction, and oxidative stress, in PAD pathophysiology. The potential of integrating molecular and imaging markers for an improved understanding of PAD is also discussed. Despite the promise of this integrative approach, there remain several challenges, including technical limitations in imaging modalities and the need for novel molecular marker discovery and validation. Addressing these challenges and embracing future directions in the field will be essential for maximizing the potential of molecular and imaging markers for improving PAD patient outcomes.
Collapse
Affiliation(s)
- Xiaomeng Wang
- Cardiovascular & Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Ying-Hwey Nai
- Clinical Imaging Research Centre, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
| | - Julian Gan
- Siemens Healthineers, Singapore 348615, Singapore
| | - Cheryl Pei Ling Lian
- Health and Social Sciences Cluster, Singapore Institute of Technology, Singapore 138683, Singapore
| | - Fraser Kirwan Ryan
- Infocomm Technology Cluster, Singapore Institute of Technology, Singapore 138683, Singapore
| | - Forest Su Lim Tan
- Infocomm Technology Cluster, Singapore Institute of Technology, Singapore 138683, Singapore
| | - Dexter Yak Seng Chan
- Department of General Surgery, Khoo Teck Puat Hospital, Singapore 768828, Singapore
| | - Jun Jie Ng
- Division of Vascular and Endovascular Surgery, Department of Cardiac, Thoracic and Vascular Surgery, National University Heart Centre, Singapore 119074, Singapore
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Zhiwen Joseph Lo
- Vascular Surgery Service, Department of Surgery, Woodlands Health, Singapore 258499, Singapore
- Centre for Population Health Sciences, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Tze Tec Chong
- Department of Vascular Surgery, Singapore General Hospital, Singapore 168752, Singapore
- Surgical Academic Clinical Programme, Singapore General Hospital, Singapore 169608, Singapore
- Vascular SingHealth Duke-NUS Disease Centre, Singapore 168752, Singapore
| | - Derek John Hausenloy
- Cardiovascular & Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
- National Heart Research Institute Singapore, National Heart Centre, Singapore 169609, Singapore
- Yong Loo Lin School of Medicine, National University Singapore, Singapore 117597, Singapore
- The Hatter Cardiovascular Institute, University College London, London WC1E 6HX, UK
| |
Collapse
|
3
|
Stacy MR. Molecular Imaging of Lower Extremity Peripheral Arterial Disease: An Emerging Field in Nuclear Medicine. Front Med (Lausanne) 2022; 8:793975. [PMID: 35096884 PMCID: PMC8789656 DOI: 10.3389/fmed.2021.793975] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 12/14/2021] [Indexed: 11/13/2022] Open
Abstract
Peripheral arterial disease (PAD) is an atherosclerotic disorder of non-coronary arteries that is associated with vascular stenosis and/or occlusion. PAD affecting the lower extremities is characterized by a variety of health-related consequences, including lifestyle-limiting intermittent claudication, ulceration of the limbs and/or feet, increased risk for lower extremity amputation, and increased mortality. The diagnosis of lower extremity PAD is typically established by using non-invasive tests such as the ankle-brachial index, toe-brachial index, duplex ultrasound, and/or angiography imaging studies. While these common diagnostic tools provide hemodynamic and anatomical vascular assessments, the potential for non-invasive physiological assessment of the lower extremities has more recently emerged through the use of magnetic resonance- and nuclear medicine-based approaches, which can provide insight into the functional consequences of PAD-related limb ischemia. This perspectives article specifically highlights and discusses the emerging applications of clinical nuclear medicine techniques for molecular imaging investigations in the setting of lower extremity PAD.
Collapse
Affiliation(s)
- Mitchel R Stacy
- Center for Regenerative Medicine, The Research Institute at Nationwide Children's Hospital, Columbus, OH, United States.,Division of Vascular Diseases and Surgery, Department of Surgery, The Ohio State University College of Medicine, Columbus, OH, United States
| |
Collapse
|
4
|
Abstract
Cardiac PET/MR imaging is an integrated imaging approach that requires less radiation than PET/computed tomography and combines the high spatial resolution and morphologic data from MR imaging with the physiologic information from PET. This hybrid approach has the potential to improve the diagnostic and prognostic evaluation of several cardiovascular conditions, such as ischemic heart disease, infiltrative diseases such as sarcoidosis, acute and chronic myocarditis, and cardiac masses. Herein, the authors discuss the strengths of PET and MR imaging in several cardiovascular conditions; the challenges and potential; and the current data on the application of this powerful hybrid imaging modality.
Collapse
Affiliation(s)
- Rhanderson Cardoso
- Division of Cardiology, Johns Hopkins Hospital, 600 North Wolfe Street, Blalock 547, Baltimore, MD 21287, USA
| | - Thorsten M Leucker
- Division of Cardiology, Johns Hopkins Hospital, 600 North Wolfe Street, Blalock 547, Baltimore, MD 21287, USA.
| |
Collapse
|
5
|
Correlating Pathology to Imaging. JACC Cardiovasc Imaging 2019; 12:1514-1517. [DOI: 10.1016/j.jcmg.2018.11.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/14/2018] [Accepted: 11/14/2018] [Indexed: 01/03/2023]
|
6
|
|
7
|
Nekolla SG, van Marwick S, Schachoff S, Kunze KP, Rischpler C. Cardiovascular PET/MRI: Technical Considerations and Outlook. CURRENT CARDIOVASCULAR IMAGING REPORTS 2017. [DOI: 10.1007/s12410-017-9435-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|