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Reisenauer C, Andress J. Awareness and barriers of sacral neuromodulation in women with overactive bladder. Arch Gynecol Obstet 2024; 310:2273-2277. [PMID: 39083051 PMCID: PMC11393171 DOI: 10.1007/s00404-024-07664-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Accepted: 07/21/2024] [Indexed: 09/13/2024]
Affiliation(s)
- Christl Reisenauer
- Department of Gynecology and Obstetrics, University Hospital Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany.
| | - Jürgen Andress
- Department of Gynecology and Obstetrics, University Hospital Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany
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2
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De Leon-Benedetti LS, Ramirez-Suarez KI, Otero HJ, Rapp JB, Biko DM, Smith C, Serai SD, Janson C, Shah M, Englehardt G, Fogel M, White AM. How we do it: Cardiac implantable devices are not a contraindication to MRI: time for a paradigm shift. Pediatr Radiol 2024; 54:863-875. [PMID: 38488925 DOI: 10.1007/s00247-024-05902-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/17/2024]
Abstract
Magnetic resonance imaging (MRI) is now an indispensable diagnostic tool in medicine due to its outstanding contrast resolution and absence of radiation exposure, enabling detailed tissue characterization and three-dimensional anatomical representation. This is especially important when evaluating individuals with congenital heart disease (CHD) who frequently require cardiac implantable electrical devices (CIEDs). While MRI safety issues have previously limited its use in patients with CIEDs, new advances have called these limitations into question. However, difficulties persist in the pediatric population due to the continued lack of specific safety data both related to imaging young children and the specific CIED devices they often require. This paper discusses MRI safety considerations related to imaging patients with CIEDs, investigates pediatric-specific problems, and describes thorough methods for safe MRI access, highlighting the significance of specialized institutional guidelines.
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Affiliation(s)
- Laura S De Leon-Benedetti
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA.
| | - Karen I Ramirez-Suarez
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Hansel J Otero
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Jordan B Rapp
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - David M Biko
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Christopher Smith
- Department of Pediatrics, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Suraj D Serai
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Christopher Janson
- Department of Pediatrics, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Maully Shah
- Department of Pediatrics, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - George Englehardt
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Mark Fogel
- Department of Pediatrics, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Ammie M White
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
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Fogante M, Volpato G, Esposto Pirani P, Cela F, Compagnucci P, Valeri Y, Selimi A, Alfieri M, Brugiatelli L, Belleggia S, Coraducci F, Argalia G, Casella M, Dello Russo A, Schicchi N. Cardiac Magnetic Resonance and Cardiac Implantable Electronic Devices: Are They Truly Still "Enemies"? MEDICINA (KAUNAS, LITHUANIA) 2024; 60:522. [PMID: 38674168 PMCID: PMC11051994 DOI: 10.3390/medicina60040522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 03/15/2024] [Accepted: 03/20/2024] [Indexed: 04/28/2024]
Abstract
The application of cardiac magnetic resonance (CMR) imaging in clinical practice has grown due to technological advancements and expanded clinical indications, highlighting its superior capabilities when compared to echocardiography for the assessment of myocardial tissue. Similarly, the utilization of implantable cardiac electronic devices (CIEDs) has significantly increased in cardiac arrhythmia management, and the requirements of CMR examinations in patients with CIEDs has become more common. However, this type of exam often presents challenges due to safety concerns and image artifacts. Until a few years ago, the presence of CIED was considered an absolute contraindication to CMR. To address these challenges, various technical improvements in CIED technology, like the reduction of the ferromagnetic components, and in CMR examinations, such as the introduction of new sequences, have been developed. Moreover, a rigorous protocol involving multidisciplinary collaboration is recommended for safe CMR examinations in patients with CIEDs, emphasizing risk assessment, careful monitoring during CMR, and post-scan device evaluation. Alternative methods to CMR, such as computed tomography coronary angiography with tissue characterization techniques like dual-energy and photon-counting, offer alternative potential solutions, although their diagnostic accuracy and availability do limit their use. Despite technological advancements, close collaboration and specialized staff training remain crucial for obtaining safe diagnostic CMR images in patients with CIEDs, thus justifying the presence of specialized centers that are equipped to handle these type of exams.
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Affiliation(s)
- Marco Fogante
- Maternal-Child, Senological, Cardiological Radiology and Outpatient Ultrasound, Department of Radiological Sciences, University Hospital of Marche, 60126 Ancona, Italy; (P.E.P.); (F.C.); (G.A.)
| | - Giovanni Volpato
- Cardiology and Arrhythmology Clinic, University Hospital “Azienda Ospedaliero-Universitaria delle Marche”, 60126 Ancona, Italy; (G.V.); (P.C.); (Y.V.); (A.S.); (M.A.); (L.B.); (S.B.); (F.C.); (M.C.); (A.D.R.)
| | - Paolo Esposto Pirani
- Maternal-Child, Senological, Cardiological Radiology and Outpatient Ultrasound, Department of Radiological Sciences, University Hospital of Marche, 60126 Ancona, Italy; (P.E.P.); (F.C.); (G.A.)
| | - Fatjon Cela
- Maternal-Child, Senological, Cardiological Radiology and Outpatient Ultrasound, Department of Radiological Sciences, University Hospital of Marche, 60126 Ancona, Italy; (P.E.P.); (F.C.); (G.A.)
| | - Paolo Compagnucci
- Cardiology and Arrhythmology Clinic, University Hospital “Azienda Ospedaliero-Universitaria delle Marche”, 60126 Ancona, Italy; (G.V.); (P.C.); (Y.V.); (A.S.); (M.A.); (L.B.); (S.B.); (F.C.); (M.C.); (A.D.R.)
| | - Yari Valeri
- Cardiology and Arrhythmology Clinic, University Hospital “Azienda Ospedaliero-Universitaria delle Marche”, 60126 Ancona, Italy; (G.V.); (P.C.); (Y.V.); (A.S.); (M.A.); (L.B.); (S.B.); (F.C.); (M.C.); (A.D.R.)
| | - Adelina Selimi
- Cardiology and Arrhythmology Clinic, University Hospital “Azienda Ospedaliero-Universitaria delle Marche”, 60126 Ancona, Italy; (G.V.); (P.C.); (Y.V.); (A.S.); (M.A.); (L.B.); (S.B.); (F.C.); (M.C.); (A.D.R.)
| | - Michele Alfieri
- Cardiology and Arrhythmology Clinic, University Hospital “Azienda Ospedaliero-Universitaria delle Marche”, 60126 Ancona, Italy; (G.V.); (P.C.); (Y.V.); (A.S.); (M.A.); (L.B.); (S.B.); (F.C.); (M.C.); (A.D.R.)
| | - Leonardo Brugiatelli
- Cardiology and Arrhythmology Clinic, University Hospital “Azienda Ospedaliero-Universitaria delle Marche”, 60126 Ancona, Italy; (G.V.); (P.C.); (Y.V.); (A.S.); (M.A.); (L.B.); (S.B.); (F.C.); (M.C.); (A.D.R.)
| | - Sara Belleggia
- Cardiology and Arrhythmology Clinic, University Hospital “Azienda Ospedaliero-Universitaria delle Marche”, 60126 Ancona, Italy; (G.V.); (P.C.); (Y.V.); (A.S.); (M.A.); (L.B.); (S.B.); (F.C.); (M.C.); (A.D.R.)
| | - Francesca Coraducci
- Cardiology and Arrhythmology Clinic, University Hospital “Azienda Ospedaliero-Universitaria delle Marche”, 60126 Ancona, Italy; (G.V.); (P.C.); (Y.V.); (A.S.); (M.A.); (L.B.); (S.B.); (F.C.); (M.C.); (A.D.R.)
| | - Giulio Argalia
- Maternal-Child, Senological, Cardiological Radiology and Outpatient Ultrasound, Department of Radiological Sciences, University Hospital of Marche, 60126 Ancona, Italy; (P.E.P.); (F.C.); (G.A.)
| | - Michela Casella
- Cardiology and Arrhythmology Clinic, University Hospital “Azienda Ospedaliero-Universitaria delle Marche”, 60126 Ancona, Italy; (G.V.); (P.C.); (Y.V.); (A.S.); (M.A.); (L.B.); (S.B.); (F.C.); (M.C.); (A.D.R.)
- Department of Clinical, Special and Dental Sciences, Marche Polytechnic University, 60121 Ancona, Italy
| | - Antonio Dello Russo
- Cardiology and Arrhythmology Clinic, University Hospital “Azienda Ospedaliero-Universitaria delle Marche”, 60126 Ancona, Italy; (G.V.); (P.C.); (Y.V.); (A.S.); (M.A.); (L.B.); (S.B.); (F.C.); (M.C.); (A.D.R.)
- Department of Biomedical Sciences and Public Health, Marche Polytechnic University, 60121 Ancona, Italy
| | - Nicolò Schicchi
- Cardiovascular Radiological Diagnostics, Department of Radiological Sciences, University Hospital of Marche, 60126 Ancona, Italy;
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Page N, Chia K, Brazier D, Manisty C, Kozor R. Access to MRI in Patients With Cardiac Implantable Electronic Devices is Variable and an Issue in Australia. Heart Lung Circ 2024; 33:362-367. [PMID: 38326134 DOI: 10.1016/j.hlc.2023.11.020] [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] [Received: 06/13/2023] [Revised: 10/11/2023] [Accepted: 11/09/2023] [Indexed: 02/09/2024]
Abstract
AIMS This study aimed to characterise the level of access to magnetic resonance imaging (MRI) in Australian hospitals for patients with MR-conditional and non-MR-conditional cardiac implantable electronic devices (CIED), and to identify any barriers impeding this access. METHODS All Australian Tertiary Referral Public Hospitals (n=38) were surveyed with a mixed qualitative and quantitative questionnaire. Provision of MRI to patients with MR-conditional and non-MR-conditional CIEDs; patient monitoring strategies during scan and personnel in attendance; barriers impeding MRI access. RESULTS Of the 35 (92%) hospitals that completed the survey, a majority (85.7%) scan MR-conditional CIEDs, while a minority (8.6%) scan non-MR-conditional CIEDs. MR-conditional device scanning is often limited to non-pacing dependent patients, excluding implantable cardioverter-defibrillators. In total, 21% of sites exclude thoracic MR scans for CIED patients. Although most centres scan on 1.5 Tesla (T) machines (59%), 10% scan at 3T and 31% scan at both strengths. Sites vary in patient monitoring strategies and personnel in attendance; 80% require staff with Advanced Cardiac Life Support to be present. Barriers to service expansion include an absence of national guidelines, formal training, and logistical device support. CONCLUSIONS Most surveyed Australian hospitals offer MRI for patients with MR-conditional CIEDs, however many still have exclusions for particular patient groups or scan requests. Only three surveyed sites offer MRI for patients with non-MR-conditional CIEDs in Australia. A national effort is needed to address the identified barriers including the development of national guidelines, formal training, and logistical support.
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Affiliation(s)
| | - Karin Chia
- Royal North Shore Hospital, Sydney, NSW, Australia
| | | | - Charlotte Manisty
- University College London and Barts Health NHS Trust, London, United Kingdom
| | - Rebecca Kozor
- The University of Sydney, Sydney, NSW, Australia; Royal North Shore Hospital, Sydney, NSW, Australia.
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Bhuva A, Charles-Edwards G, Ashmore J, Lipton A, Benbow M, Grainger D, Lobban T, Gopalan D, Slade A, Roditi G, Manisty C. Joint British Society consensus recommendations for magnetic resonance imaging for patients with cardiac implantable electronic devices. Heart 2024; 110:e3. [PMID: 36104218 DOI: 10.1136/heartjnl-2022-320810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Magnetic Resonance Imaging (MRI) is increasingly a fundamental component of the diagnostic pathway across a range of conditions. Historically, the presence of a cardiac implantable electronic device (CIED) has been a contraindication for MRI, however, development of MR Conditional devices that can be scanned under strict protocols has facilitated the provision of MRI for patients. Additionally, there is growing safety data to support MR scanning in patients with CIEDs that do not have MR safety labelling or with MR Conditional CIEDs where certain conditions are not met, where the clinical justification is robust. This means that almost all patients with cardiac devices should now have the same access to MRI scanning in the National Health Service as the general population. Provision of MRI to patients with CIED, however, remains limited in the UK, with only half of units accepting scan requests even for patients with MR Conditional CIEDs. Service delivery requires specialist equipment and robust protocols to ensure patient safety and facilitate workflows, meanwhile demanding collaboration between healthcare professionals across many disciplines. This document provides consensus recommendations from across the relevant stakeholder professional bodies and patient groups to encourage provision of safe MRI for patients with CIEDs.
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Affiliation(s)
- Anish Bhuva
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, UK
- Institute of Health Informatics, University College London, London, UK
| | - Geoff Charles-Edwards
- Medical Physics, Guy's & St Thomas' NHS Foundation Trust, London, UK
- Representative for the British Institute of Radiology, London, UK
| | - Jonathan Ashmore
- Department of Medical Physics and Bioengineering, NHS Highland, Inverness, UK
- Representative for Institute of Physics and Engineering in Medicine, York, UK
| | | | - Matthew Benbow
- Department of Radiology, Royal Bournemouth Hospital, Bournemouth, UK
- Representative for British Association of MR Radiographers, Sheffield, UK
| | - David Grainger
- Medicines and Healthcare Products Regulatory Agency, London, UK
| | - Trudie Lobban
- Arrhythmia Alliance & Atrial Fibrillation Association, Stratford upon Avon, UK
| | - Deepa Gopalan
- Department of Radiology, Imperial College London, London, UK
- Representative for Royal College of Radiologists, London, UK
| | - Alistair Slade
- Cardiology, Royal Cornwall Hospitals NHS Trust, Truro, UK
- Representative for British Heart Rhythm Society, Chipping Norton, UK
| | - Giles Roditi
- Radiology, Glasgow Royal Infirmary, Glasgow, UK
- Representative of the British Society of Cardiovascular Imaging and British Society of Cardiovascular CT, London, UK
| | - Charlotte Manisty
- Department of Cardiovascular Imaging, Barts Heart Centre, Barts Health NHS Trust, London, UK
- Institute of Cardiovascular Science, University College London, London, UK
- Representative of British Cardiovascular Society, London, UK
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Barnsley H, Uzoukwu S, Hassan S, Borri M. The use of low dose CT scouts for MR safety screening: A multi-reader evaluation. Radiography (Lond) 2024; 30:168-175. [PMID: 38035429 DOI: 10.1016/j.radi.2023.11.002] [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] [Received: 05/21/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 12/02/2023]
Abstract
INTRODUCTION Plain film radiographs are recommended to assist in MRI safety screening of patients with unknown medical histories, especially in an emergency setting where patients might be unable to answer a safety questionnaire. This study assesses the performance of CT scout images, which have low radiation dose and are faster and easier to acquire compared to plain film radiographs, in finding and naming a range of head and body implants. METHODS A retrospective analysis of 40 CT Head and Neck (HN) scout images and 40 CT Chest, Abdomen and Pelvis (CAP) scout images was undertaken. A subset of these were chosen to include a range of common internal implants not identifiable externally to the patient. The images were assessed by three readers with varying levels of clinical experience in MRI who were asked to find and name any implants seen. RESULTS Collectively, all readers reached a sensitivity of 85 % in finding internal implants, regardless of their clinical experience or experience in reviewing CT images, and a minimum specificity of 95 %. Implants were correctly named in 74 % of the images presented. CONCLUSION CT scout images were able to reveal most of the implants included. However, clinical experience in reviewing the images enhances a reader's ability to identify the type of implant. IMPLICATIONS FOR PRACTICE In an emergency setting, imaging can be critical in the management of patients presenting with acute illnesses. In the unconscious or unresponsive patient, the use of CT scouts, where this is the only option available, could provide valuable MRI safety information prior to a scan, improving access to the MRI scan in a timely manner.
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Affiliation(s)
- H Barnsley
- Neuroradiology, King's College Hospital NHS Foundation Trust, Denmark Hill, London, SE5 9RS, UK.
| | - S Uzoukwu
- Neuroradiology, King's College Hospital NHS Foundation Trust, Denmark Hill, London, SE5 9RS, UK
| | - S Hassan
- Neuroradiology, King's College Hospital NHS Foundation Trust, Denmark Hill, London, SE5 9RS, UK
| | - M Borri
- Neuroradiology, King's College Hospital NHS Foundation Trust, Denmark Hill, London, SE5 9RS, UK.
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Dacher JN, Langguth P, Adam D, Winkler WB, Martí-Almor J, Prenner G, Trucco ME, Kol A, Xiang M, Melissano D, Fawaz H, Lau DH. Safety and performance of MR-conditional pacing systems with automated MRI mode at 1.5 and 3 Tesla. Eur Radiol 2023; 33:6948-6958. [PMID: 37195432 PMCID: PMC10189234 DOI: 10.1007/s00330-023-09650-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 02/11/2023] [Accepted: 02/26/2023] [Indexed: 05/18/2023]
Abstract
OBJECTIVES To evaluate at 1.5 and 3 T MRI the safety and performance of trademarked ENO®, TEO®, or OTO® pacing systems with automated MRI Mode and the image quality of non-enhanced MR examinations. METHODS A total of 267 implanted patients underwent MRI examination (brain, cardiac, shoulder, cervical spine) at 1.5 (n = 126) or 3 T (n = 141). MRI-related device complications, lead electrical performances stability at 1-month post-MRI, proper functioning of the automated MRI mode and image quality were evaluated. RESULTS Freedom from MRI-related complications at 1 month post-MRI was 100% in both 1.5 and 3 T arms (both p < 0.0001). The stability of pacing capture threshold was respectively at 1.5 and 3 T (atrial:: 98.9% (p = 0.001) and 100% (p < 0.0001); ventricular: both 100% (p < 0001)). The stability of sensing was respectively at 1.5 and 3 T (atrial: 100% (p = 0.0001) and 96.9% (p = 0.01); ventricular: 100% (p < 0.0001) and 99.1% (p = 0.0001)). All devices switched automatically to the programmed asynchronous mode in the MRI environment and to initially programmed mode after the MRI exam. While all MR examinations were assessed as interpretable, artifacts deteriorated a subset of examinations including mostly cardiac and shoulder ones. CONCLUSION This study demonstrates the safety and electrical stability of ENO®, TEO®, or OTO® pacing systems at 1 month post-MRI at 1.5 and 3 T. Even if artifacts were noticed in a subset of examinations, overall interpretability was preserved. CLINICAL RELEVANCE STATEMENT ENO®, TEO®, and OTO® pacing systems switch to MR-mode when detecting magnetic field and switch back on conventional mode after MRI. Their safety and electrical stability at 1 month post MRI were shown at 1.5 and 3 T. Overall interpretability was preserved. KEY POINTS • Patients implanted with an MRI conditional cardiac pacemaker can be safely scanned under 1.5 or 3 Tesla MRI with preserved interpretability. • Electrical parameters of the MRI conditional pacing system remain stable after a 1.5 or 3 Tesla MRI scan. • The automated MRI mode enabled the automatic switch to asynchronous mode in the MRI environment and to initial settings after the MRI scan in all patients.
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Affiliation(s)
- Jean-Nicolas Dacher
- Department of Radiology, Normandie Univ, UNIROUEN INSERM U1096 and CHU Rouen, 37 Boulevard Gambetta, 76000, Rouen, France.
| | - Patrick Langguth
- Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - David Adam
- Monash Cardiac Rhythm Management Department, Monash Heart, Monash Medical Centre, Melbourne, Australia
| | - Walther-Benedikt Winkler
- Medical Department II With Cardiology and Intensive Care Medicine, Klinik Landstrasse, Vienna, Austria
| | - Julio Martí-Almor
- Department of Cardiology, Hospital del Mar (IMAS-UAB), Barcelona, Spain
| | - Günther Prenner
- Universitätsklinik Für Innere Medizin, Klinische Abteilung Für Kardiologie, Medizinische Universität Graz, Graz, Austria
| | - María Emilce Trucco
- Arrhythmia Section, Cardiology Department, Hospital Universitari Doctor Josep Trueta, Girona, Spain
| | - Amir Kol
- Department of Cardiology, San Camillo De Lellis Hospital, ASL Rieti, Rieti, Italy
| | - Meixiang Xiang
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | | | - Hanan Fawaz
- Clinical Affairs, MicroPort CRM, Clamart, France
| | - Dennis H Lau
- Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital, Adelaide, SA, Australia
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Ma YD, Watson RE, Olson NE, Birgersdotter-Green U, Patel K, Mulpuru SK, Madhavan M, Deshmukh AJ, Killu AM, Friedman PA, Cha YM. Safety of magnetic resonance imaging in patients with surgically implanted permanent epicardial leads. Heart Rhythm 2023; 20:1111-1118. [PMID: 37075957 DOI: 10.1016/j.hrthm.2023.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/28/2023] [Accepted: 04/09/2023] [Indexed: 04/21/2023]
Abstract
BACKGROUND Magnetic resonance imaging (MRI) safety in patients with an epicardial cardiac implantable electronic device (CIED) is uncertain. OBJECTIVE The purpose of this study was to assess the safety and adverse effects of MRI in patients who had surgically implanted epicardial CIED. METHODS Patients with surgically implanted CIEDs who underwent MRI with an appropriate cardiology-radiology collaborative protocol between January 2008 and January 2021 were prospectively studied in 2 clinical centers. All patients underwent close cardiac monitoring through MRI procedures. Outcomes were compared between the epicardial CIED group and the matched non-MRI-conditional transvenous CIED group. RESULTS Twenty-nine consecutive patients with epicardial CIED (41.4% male; mean age 43 years) underwent 52 MRIs in 57 anatomic regions. Sixteen patients had a pacemaker, 9 had a cardiac defibrillator or cardiac resynchronization therapy-defibrillator, and 4 had no device generator. No significant adverse events occurred in the epicardial or transvenous CIED groups. Battery life, pacing, sensing thresholds, lead impedance, and cardiac biomarkers were not significantly changed, except 1 patient had a transient decrease in atrial lead sensing function. CONCLUSION MRI of CIEDs with epicardially implanted leads does not represent a greater risk than transvenous CIEDs when performed with a multidisciplinary collaborative protocol centered on patient safety.
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Affiliation(s)
- Yue-Dong Ma
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | | | - Nora E Olson
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
| | - Ulrika Birgersdotter-Green
- Department of Cardiovascular Medicine, University of California, San Diego Health System, San Diego, California
| | - Kavisha Patel
- Department of Cardiovascular Medicine, University of California, San Diego Health System, San Diego, California
| | - Siva K Mulpuru
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
| | - Malini Madhavan
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
| | | | - Ammar M Killu
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
| | - Paul A Friedman
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
| | - Yong-Mei Cha
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota.
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Chen X, Zheng C, Golestanirad L. Application of Machine learning to predict RF heating of cardiac leads during magnetic resonance imaging at 1.5 T and 3 T: A simulation study. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2023; 349:107384. [PMID: 36842429 DOI: 10.1016/j.jmr.2023.107384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 01/04/2023] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
Predicting magnetic resonance imaging (MRI)-induced heating of elongated conductive implants, such as leads in cardiovascular implantable electronic devices, is essential to assessing patient safety. Phantom experiments have traditionally been used to estimate radio-frequency (RF) heating of implants, but they are time-consuming. Recently, machine learning has shown promise for fast prediction of RF heating of orthopaedic implants when the implant position within the MRI RF coil was predetermined. We explored whether deep learning could be applied to predict RF heating of conductive leads with variable positions and orientations during MRI at 1.5 T and 3 T. Models of 600 cardiac leads with clinically relevant trajectories were generated, and electromagnetic simulations were performed to calculate the maximum of the 1 g-averaged specific absorption rate (SAR) of RF energy at the tips of lead models during MRI at 1.5 T and 3 T. Neural networks were trained to predict the maximum SAR at the lead tip from the knowledge of the coordinates of points along the lead trajectory. Despite the large range of SAR values (∼230 W/kg to ∼ 3200 W/kg and ∼ 10 W/kg to ∼ 3300 W/kg), the root- mean-square error of the predicted vs ground truth SAR remained at 223 W/kg and 206 W/kg, with the R2 scores of 0.89 and 0.85 on the testing set for 1.5 T and 3 T models, respectively. The results suggest that machine learning is a promising approach for fast assessment of RF heating of lead-like implants when only the knowledge of the lead geometry and MRI RF coil features are in hand.
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Affiliation(s)
- Xinlu Chen
- Department of Electrical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Can Zheng
- Department of Electrical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - L Golestanirad
- Department of Electrical Engineering, Northwestern University, Evanston, IL, 60208, USA; Departmeng of Radiology, Northwestern University Chicago, IL 60611, USA; Departmeng of Biomedical Engineering, Northwestern University, Evanston, IL 60608, USA.
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10
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Goodwin E, Fogelson B, Cox JW, Mahlow WJ. An algorithm for pacing and cardioverting electronic devices undergoing magnetic resonance imaging: The PACED-MRI protocol. Magn Reson Imaging 2023; 96:44-49. [PMID: 36441043 DOI: 10.1016/j.mri.2022.10.012] [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: 05/05/2022] [Revised: 10/18/2022] [Accepted: 10/23/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Cardiac implantable electronic devices (CIEDs) have traditionally been a contraindication for magnetic resonance imaging (MRI). However, there is an increasing amount of literature to suggest that MRI can be safely performed in select patients with pacemakers and implantable cardioverter defibrillators by following a standardized protocol. We created an institutional protocol, made accessible as an online form, that is primarily technologist-driven and does not require direct electrophysiologist supervision. The purpose of this study was to evaluate the PACEDMRI protocol for screening and completing MRI in patients with MR conditional CIEDs. SUBJECTS AND METHODS After the implementation of our standardized PACED-MRI protocol, patients with MR conditional CIEDs who were referred for MRI were included in the study. On the day of the MRI, the device company representative utilized our protocol accessed through PACEDMRI.com. If all parameters and criteria within the protocol were met, the examination proceeded. The device representative programed the CIED to the appropriate mode for MRI as instructed by the PACED-MRI protocol. CIED interrogation was performed immediately before and after MRI. The on-call electrophysiology nurse practitioner was notified only if the protocol instructed the team to not proceed with MRI. CIED programming changes, malfunctions, and intraprocedural events were documented. Additionally, any adverse outcomes were recorded including peri-MRI symptom onset, arrhythmia, and death. RESULTS One hundred thirty-eight MRI examinations were performed on patients with MR conditional CIEDs (100 pacemakers: 38 implantable cardiac defibrillators). There was no incidence of symptom onset requiring early termination of the MRI, death, or arrhythmic events during or after MRI. No significant changes in lead parameters, including sensing amplitudes, lead thresholds, or lead impedances were noted on post-MRI device interrogation. Out of the 138 completed MRIs, the on-call electrophysiology provider was notified on one, non-urgent occasion. CONCLUSION The implementation of the standardized, technologists-driven PACED-MRI protocol allowed for a multidisciplinary approach to MRI for patients with MR conditional CIEDs. This study demonstrates that the PACED-MRI protocol can be used for patients with MR conditional CIEDs undergoing MRI without the need for direct electrophysiologist supervision.
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Affiliation(s)
- Elliott Goodwin
- Department of Cardiology, University of Tennessee Graduate School of Medicine, Knoxville, TN, USA.
| | - Benjamin Fogelson
- Department of Cardiology, University of Tennessee Graduate School of Medicine, Knoxville, TN, USA
| | - James W Cox
- Department of Cardiology, University of Tennessee Graduate School of Medicine, Knoxville, TN, USA
| | - William J Mahlow
- Department of Cardiology, University of Tennessee Graduate School of Medicine, Knoxville, TN, USA
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11
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Fluschnik N, Tahir E, Erley J, Müllerleile K, Metzner A, Wenzel JP, Guerreiro H, Adam G, Blankenberg S, Kirchhof P, Tönnis T, Nikorowitsch J. 3 Tesla magnetic resonance imaging in patients with cardiac implantable electronic devices: a single centre experience. Europace 2022; 25:571-577. [PMID: 36413601 PMCID: PMC9935018 DOI: 10.1093/europace/euac213] [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: 07/31/2022] [Accepted: 11/01/2022] [Indexed: 11/23/2022] Open
Abstract
AIMS Three Tesla (T) magnetic resonance imaging (MRI) provides critical imaging information for many conditions. Owing to potential interactions of the magnetic field, it is largely withheld from patients with cardiac implantable electronic devices (CIEDs). Therefore, we assessed the safety of 3T MRI in patients with '3T MRI-conditional' and 'non-3T MRI-conditional' CIEDs. METHODS AND RESULTS We performed a retrospective single-centre analysis of clinically indicated 3T MRI examinations in patients with conventional pacemakers, cardiac resynchronization devices, and implanted defibrillators from April 2020 to May 2022. All CIEDs were interrogated and programmed before and after scanning. Adverse events included all-cause death, arrhythmias, loss of capture, inappropriate anti-tachycardia therapies, electrical reset, and lead or generator failure during or shortly after MRI. Changes in signal amplitude and lead impedance were systematically assessed. Statistics included median and interquartile range. A total of 132 MRI examinations were performed on a 3T scanner in 97 patients. Thirty-five examinations were performed in patients with 'non-3T MRI-conditional' CIEDs. Twenty-six scans were performed in pacemaker-dependent patients. No adverse events occurred during or shortly after MRI. P-wave or R-wave reductions ≥ 50 and ≥ 25%, respectively, were noted after three (2.3%) scans, all in patients with '3T MRI-conditional' CIEDs. Pacing and shock impedance changed by ± 30% in one case (0.7%). Battery voltage and stimulation thresholds did not relevantly change after MRI. CONCLUSION Pending verification in independent series, our data suggest that clinically indicated MRI scans at 3T field strength should not be withheld from patients with cardiac pacemakers or defibrillators.
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Affiliation(s)
- Nina Fluschnik
- Corresponding author. Phone: +49 (0) 40 7410 18576, Fax: +49 (0) 40 7410 58206, E-mail address:
| | - Enver Tahir
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistr 52, 20251 Hamburg, Germany
| | - Jennifer Erley
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistr 52, 20251 Hamburg, Germany
| | - Kai Müllerleile
- Department of Cardiology, University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20251 Hamburg, Germany
| | - Andreas Metzner
- Department of Cardiology, University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20251 Hamburg, Germany
| | - Jan-Per Wenzel
- Department of Cardiology, University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20251 Hamburg, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Luebeck, Martinistr 52, 20251 Hamburg, Germany
| | - Helena Guerreiro
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20251 Hamburg, Germany
| | - Gerhard Adam
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Martinistr 52, 20251 Hamburg, Germany
| | - Stefan Blankenberg
- Department of Cardiology, University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20251 Hamburg, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Luebeck, Martinistr 52, 20251 Hamburg, Germany
| | - Paulus Kirchhof
- Department of Cardiology, University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20251 Hamburg, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Luebeck, Martinistr 52, 20251 Hamburg, Germany,Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Tobias Tönnis
- Department of Cardiology, University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20251 Hamburg, Germany
| | - Julius Nikorowitsch
- Department of Cardiology, University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20251 Hamburg, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Luebeck, Martinistr 52, 20251 Hamburg, Germany
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12
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Zaman A, Zhao S, Kron J, Abbate A, Tomdio A, Hundley WG, Jordan JH. Role of Cardiac MRI Imaging of Focal and Diffuse Inflammation and Fibrosis in Cardiomyopathy Patients Who Have Pacemakers/ICD Devices. Curr Cardiol Rep 2022; 24:1529-1536. [PMID: 35984554 PMCID: PMC10123953 DOI: 10.1007/s11886-022-01770-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/08/2022] [Indexed: 01/11/2023]
Abstract
PURPOSE OF REVIEW This focused report aims to discuss and summarize the use of conventional and emerging methods using cardiovascular magnetic resonance (CMR) imaging in cardiomyopathy patients with implanted cardiac devices to identify diffuse and focal inflammation and fibrosis. RECENT FINDINGS Many cardiomyopathy patients with diffuse and focal myocardial fibrosis have a unique need for cardiac imaging that is complicated by cardiovascular implantable electronic devices (CIEDs). CMR imaging can accurately image myocardial fibrosis and inflammation using T1 mapping and late gadolinium enhancement (LGE) imaging. CMR imaging in CIED patients, however, has been limited due to severe imaging artifacts associated with the devices. The emergence of wideband imaging variants of LGE and T1 mapping techniques can successfully reduce or eliminate CIED artifacts for the evaluation of myocardial substrate in cardiomyopathy patients. Wideband imaging variants of LGE and T1 mapping techniques provide new tools for imaging focal and diffuse fibrosis and imaging in cardiomyopathy patients with implanted cardiac devices. These emerging techniques have the potential for great impact in clinical care of such patients as well as clinical research where imaging endpoints are desired.
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Affiliation(s)
- Ananna Zaman
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Samantha Zhao
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Jordana Kron
- Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University, West Hospital, 8th Floor, 1200 E. Broad Street, Richmond, VA, 23298, USA
| | - Antonio Abbate
- Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University, West Hospital, 8th Floor, 1200 E. Broad Street, Richmond, VA, 23298, USA
| | - Anna Tomdio
- Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University, West Hospital, 8th Floor, 1200 E. Broad Street, Richmond, VA, 23298, USA
| | - W Gregory Hundley
- Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University, West Hospital, 8th Floor, 1200 E. Broad Street, Richmond, VA, 23298, USA
| | - Jennifer H Jordan
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA. .,Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University, West Hospital, 8th Floor, 1200 E. Broad Street, Richmond, VA, 23298, USA.
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13
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Ramirez-Suarez KI, Otero HJ, Biko DM, Dori Y, Smith CL, Feudtner C, White AM. Magnetic resonance lymphangiography in post-Fontan palliation patients with MR non-conditional cardiac electronic devices: An institutional experience. Clin Imaging 2022; 86:43-52. [DOI: 10.1016/j.clinimag.2022.02.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 01/31/2022] [Accepted: 02/14/2022] [Indexed: 11/03/2022]
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Vuorinen AM, Paakkanen R, Karvonen J, Sinisalo J, Holmström M, Kivistö S, Peltonen JI, Kaasalainen T. Magnetic resonance imaging safety in patients with abandoned or functioning epicardial pacing leads. Eur Radiol 2022; 32:3830-3838. [PMID: 34989847 DOI: 10.1007/s00330-021-08469-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 11/12/2021] [Accepted: 11/17/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The European Society of Cardiology Guidelines on cardiac pacing from 2021 allow magnetic resonance imaging (MRI) in patients with cardiac implantable electronic devices (CIEDs) but do not recommend MRI in patients with epicardial pacing leads. The clinical dilemma remains whether performing an MRI in patients with CIED and epicardial leads is safe. We aimed to evaluate the safety of performing an MRI in patients with CIED and abandoned or functioning epicardial pacing leads. METHODS We included all adult patients who underwent clinically indicated MRIs with CIED and functioning or abandoned epicardial leads in a single tertiary hospital between November 2011 and October 2019. The data were retrospectively collected. RESULTS Twenty-six MRIs were performed on 17 patients with functioning or abandoned epicardial pacing leads. Sixty-nine percent of the MRI scans (18/26) were conducted on patients with functioning epicardial pacing leads. A definite adverse event occurred in one MRI scan. This was a transient elevation of the pacing threshold in a patient with a functioning epicardial ventricular pacing lead implanted 29 years previously. An irreversible atrial pacing lead impedance elevation was detected 6 months after the MRI in another patient; the association with the previous MRI remained unclear. No adverse events were detected in MRIs performed on patients with modern (implanted in 2000 or later) functioning epicardial leads. CONCLUSIONS MRIs in patients with CIED and modern functioning epicardial pacing leads were performed without detectable adverse events. Further large-scale studies are necessary to confirm MRI safety in patients with epicardial pacing leads. KEY POINTS • Currently, MRI in patients with cardiac implantable electronic devices (CIEDs) and functioning or abandoned epicardial pacing leads is not recommended. • MRIs in patients with CIED and modern functioning epicardial leads (implanted in 2000 or later) were performed without detectable adverse events in our patient cohort. • Allowing MRI in patients with epicardial pacing leads may significantly improve the diagnostic work-up, especially in specific patient groups, such as patients with congenital heart disease.
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Affiliation(s)
- Aino-Maija Vuorinen
- Radiology, HUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, P.O. Box 340, 00029 HUS, Helsinki, Finland.
| | - Riitta Paakkanen
- Heart and Lung Center, University of Helsinki and Helsinki University Hospital, P.O. Box 340, 00029 HUS, Helsinki, Finland
| | - Jarkko Karvonen
- Heart and Lung Center, University of Helsinki and Helsinki University Hospital, P.O. Box 340, 00029 HUS, Helsinki, Finland
| | - Juha Sinisalo
- Heart and Lung Center, University of Helsinki and Helsinki University Hospital, P.O. Box 340, 00029 HUS, Helsinki, Finland
| | - Miia Holmström
- Radiology, HUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, P.O. Box 340, 00029 HUS, Helsinki, Finland
| | - Sari Kivistö
- Radiology, HUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, P.O. Box 340, 00029 HUS, Helsinki, Finland
| | - Juha I Peltonen
- Radiology, HUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, P.O. Box 340, 00029 HUS, Helsinki, Finland
| | - Touko Kaasalainen
- Radiology, HUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, P.O. Box 340, 00029 HUS, Helsinki, Finland
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Wooldridge J, Arduino A, Zilberti L, Zanovello U, Chiampi M, Clementi V, Bottauscio O. Gradient coil and radiofrequency induced heating of orthopaedic implants in MRI: influencing factors. Phys Med Biol 2021; 66. [PMID: 34847533 DOI: 10.1088/1361-6560/ac3eab] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 11/30/2021] [Indexed: 11/12/2022]
Abstract
Patients with implanted orthopaedic devices represent a growing number of subjects undergoing magnetic resonance imaging (MRI) scans each year. MRI safety labelling is required for all implants under the EU Medical Device Regulations to ensure regulatory compliance, with each device assessed through standardised testing procedures. In this paper, we employ parametric studies to assess a range of clinically relevant factors that cause tissue heating, performing simulations with both radiofrequency (RF) and gradient coil (GC) switching fields, the latter of which is often overlooked in the literature. A series of 'worst-case' scenarios for both types of excitation field is discussed. In the case of GC fields, large volume implants and large plate areas with the field orientated perpendicular to the plane cause the highest heating levels, along with sequences with high rates of field switching. Implant heating from RF fields is driven primarily from the 'antenna effect', with thin, linear implants of resonant length resulting in the highest temperature rises. In this work, we show that simplifications may be made to the field sequence and in some cases the device geometry without significantly compromising the accuracy of the simulation results, enabling the possibility for generic estimates of the implant heating for orthopaedic device manufacturers and opportunities to simplify the safety compliance process.
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Affiliation(s)
- J Wooldridge
- National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, United Kingdom
| | - A Arduino
- Istituto Nazionale di Ricerca Metrologica, Str. delle Cacce, 91, I-10135 Torino TO, Italy
| | - L Zilberti
- Istituto Nazionale di Ricerca Metrologica, Str. delle Cacce, 91, I-10135 Torino TO, Italy
| | - U Zanovello
- Istituto Nazionale di Ricerca Metrologica, Str. delle Cacce, 91, I-10135 Torino TO, Italy
| | - M Chiampi
- Istituto Nazionale di Ricerca Metrologica, Str. delle Cacce, 91, I-10135 Torino TO, Italy
| | - V Clementi
- IRCCS Istituto Ortopedico Rizzoli, Laboratorio di Tecnologia Medica, Via di Barbiano 1/10, I-40136 Bologna, Italy
| | - O Bottauscio
- Istituto Nazionale di Ricerca Metrologica, Str. delle Cacce, 91, I-10135 Torino TO, Italy
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16
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Nikolaidou C, Karamitsos TD. Cardiac magnetic resonance in patients with muscular dystrophies: strengthening the data. Eur J Prev Cardiol 2021; 28:1536-1538. [PMID: 32517503 DOI: 10.1177/2047487320932693] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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17
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Evaluation of Potential Cumulative Risk of Multiple 1.5-T MRI Examinations in Patients With Cardiac Implanted Electronic Devices. AJR Am J Roentgenol 2021; 218:831-832. [PMID: 34910536 DOI: 10.2214/ajr.21.26564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
While professional societies now support MRI in patients with non-conditional (legacy) cardiac implanted electronic devices (CIEDs), concern remains regarding potential cumulative effects of serial examinations. We evaluated 481 patients with CIEDs who underwent 599 1.5-T MRI examinations (44.5% cardiac examinations), including 68 who underwent multiple examinations (maximum, 7 examinations). No major events occurred. Minor adverse event rate was 5.6%. Multiple statistical evaluations showed no increase in adverse event rate with increasing number of previous examinations.
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18
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Bhuva AN, Moralee R, Brunker T, Lascelles K, Cash L, Patel KP, Lowe M, Sekhri N, Alpendurada F, Pennell DJ, Schilling R, Lambiase PD, Chow A, Moon JC, Litt H, Baksi AJ, Manisty CH. Evidence to support magnetic resonance conditional labelling of all pacemaker and defibrillator leads in patients with cardiac implantable electronic devices. Eur Heart J 2021; 43:2469-2478. [PMID: 34435642 PMCID: PMC9259370 DOI: 10.1093/eurheartj/ehab350] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/20/2021] [Accepted: 05/28/2021] [Indexed: 11/14/2022] Open
Abstract
AIMS Many cardiac pacemakers and defibrillators are not approved by regulators for magnetic resonance imaging (MRI). Even following generator exchange to an approved magnetic resonance (MR)-conditional model, many systems remain classified 'non-MR conditional' due to the leads. This classification makes patient access to MRI challenging, but there is no evidence of increased clinical risk. We compared the effect of MRI on non-MR conditional and MR-conditional pacemaker and defibrillator leads. METHODS AND RESULTS Patients undergoing clinical 1.5T MRI with pacemakers and defibrillators in three centres over 5 years were included. Magnetic resonance imaging protocols were similar for MR-conditional and non-MR conditional systems. Devices were interrogated pre- and immediately post-scan, and at follow-up, and adverse clinical events recorded. Lead parameter changes peri-scan were stratified by MR-conditional labelling. A total of 1148 MRI examinations were performed in 970 patients (54% non-MR conditional systems, 39% defibrillators, 15% pacing-dependent) with 2268 leads. There were no lead-related adverse clinical events, and no clinically significant immediate or late lead parameter changes following MRI in either MR-conditional or non-MR conditional leads. Small reductions in atrial and right ventricular sensed amplitudes and impedances were similar between groups, with no difference in the proportion of leads with parameter changes greater than pre-defined thresholds (7.1%, 95% confidence interval: 6.1-8.3). CONCLUSIONS There was no increased risk of MRI in patients with non-MR conditional pacemaker or defibrillator leads when following recommended protocols. Standardizing MR conditions for all leads would significantly improve access to MRI by enabling patients to be scanned in non-specialist centres, with no discernible incremental risk.
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Affiliation(s)
- Anish N Bhuva
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK.,Institute for Cardiovascular Science, University College London, London, WC1E 6HX, UK.,Health Data Research UK, University College London, London, UK
| | - Russell Moralee
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK
| | - Tamara Brunker
- Department of Radiology, Division of Cardiovascular Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Karen Lascelles
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust and National Heart and Lung Institute, Imperial College, London, SW3 6NP, UK
| | - Lizette Cash
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK
| | - Kush P Patel
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK
| | - Martin Lowe
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK
| | - Neha Sekhri
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK
| | - Francisco Alpendurada
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust and National Heart and Lung Institute, Imperial College, London, SW3 6NP, UK
| | - Dudley J Pennell
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust and National Heart and Lung Institute, Imperial College, London, SW3 6NP, UK
| | - Richard Schilling
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK
| | - Pier D Lambiase
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK.,Institute for Cardiovascular Science, University College London, London, WC1E 6HX, UK
| | - Anthony Chow
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK
| | - James C Moon
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK.,Institute for Cardiovascular Science, University College London, London, WC1E 6HX, UK
| | - Harold Litt
- Department of Radiology, Division of Cardiovascular Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - A John Baksi
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust and National Heart and Lung Institute, Imperial College, London, SW3 6NP, UK
| | - Charlotte H Manisty
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London, EC1A 7BE, UK.,Institute for Cardiovascular Science, University College London, London, WC1E 6HX, UK
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Trajcheski T, Brovina L, Zafirova B, Trajceska L. Introduction of Cardiac Magnetic Resonance Imaging in Kosovo: First Fifty Consecutive Patients Registry Report. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.6085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Cardiac magnetic resonance (CMR) as advanced diagnostic tool for the heart has been introduced in our institution since September 2019.
AIM: We report on the first fifty consecutive patients using this imaging modality.
METHODS AND MATERIALS: Strict protocol for CMR procedure, imaging quality assessment, contraindications, and informed consent were established. Patients selected for CMR were enrolled in a prospective registry. Visualizing the heart chambers, heart muscle and heart valves, resulted in acquiring complex imaging of the heart structure and function. When applicable, patients received gadolinium contrast agent for Late Gadolinium Enhancement (LGE). Adenosine was used for stress induced myocardial perfusion study. In this study, we report on the initial CMR procedures in the first 15 months.
RESULTS: The age of the patients ranges from 17 to 82 and the number of male and female patients was well balanced. No absolute contraindications were met in any patient. Relative contraindications were noted but did not prevent from performing the scan. Different cardiac pathologies were encountered in the examined patients. Most common was the ischemic heart disease – 19 (38%). We had 15 (30%) out of 46 (92%) CMR procedures with LGE showing fibrotic scaring. Quality image assessment was scaled from poor to excellent. Most of the assessments were graded very good and good (46% and 48%), no poor, and very poor noted.
CONCLUSION: CMR has been successfully introduced in Kosovo as excellent imaging tool for diagnosing and characterizing a nearly exhaustive spectrum of heart diseases.
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Pieri C, Bhuva A, Moralee R, Abiodun A, Gopalan D, Roditi GH, Moon JC, Manisty C. Access to MRI for patients with cardiac pacemakers and implantable cardioverter defibrillators. Open Heart 2021; 8:e001598. [PMID: 34031214 PMCID: PMC8149430 DOI: 10.1136/openhrt-2021-001598] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/02/2021] [Accepted: 03/05/2021] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE To determine provision of MRI for patients with cardiac implantable electronic devices (CIEDs; pacemakers and defibrillators) in England, to understand regional variation and assess the impact of guideline changes. METHODS Retrospective data related to MRI scans performed in patients with CIED over the preceding 12 months was collected using a structured survey tool distributed to every National Health Service Trust MRI unit in England. Data were compared with similar data from 2014/2015 and with demand (estimated from local CIED implantation rates and regional population data by sustainability and transformation partnerships (STPs)). RESULTS Responses were received from 212 of 223 (95%) hospitals in England. 112 (53%) MRI units' scan patients with MR-conditional CIEDs (10% also scan non-MR conditional devices), compared with 46% of sites in 2014/2015. Total annual scan volume increased over fourfold between 2014 and 2019 (1090 to 4896 scans). There was widespread geographical variation, with five STPs (total population >3·5 million representing approximately 25 000 patients with CIED) with no local provision. There was no correlation between local demand (CIED implantation rates) and MRI provision (scan volume). Complication rates were extremely low with three events nationally in 12 months (0·06% CIED-MRI scans). CONCLUSIONS Provision of MRI for patients with CIEDs in England increased over fourfold in 4 years, but an estimated 10-fold care gap remains. Almost half of hospitals and 1 in 10 STPs have no service, with no relationship between local supply and demand. Availability of MRI for patients with non-MR conditional devices, although demonstrably safe, remains limited.
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Affiliation(s)
- Christopher Pieri
- Institute of Health Sciences, Queen Mary University of London Barts and The London School of Medicine and Dentistry, London, UK
| | - Anish Bhuva
- Department of Cardiology, Barts Health NHS Trust, London, UK
- Department of Radiology, Imperial College London, London, UK
| | - Russell Moralee
- Department of Radiology, Imperial College London, London, UK
| | - Aderonke Abiodun
- Department of Cardiology, Barts Health NHS Trust, London, UK
- Department of Radiology, Imperial College London, London, UK
| | - Deepa Gopalan
- Department of Radiology, University of Glasgow, Glasgow, UK
| | - Giles H Roditi
- Department of Cardiovascular Imaging, Barts Heart Centre, London, Greater London, UK
| | - James C Moon
- Department of Cardiology, Barts Health NHS Trust, London, UK
- Department of Radiology, Imperial College London, London, UK
| | - Charlotte Manisty
- Department of Cardiology, Barts Health NHS Trust, London, UK
- Department of Radiology, Imperial College London, London, UK
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21
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Lebel K, Mondesert B, Robillard J, Pham M, Terrone D, Tan S. 2020 MR Safety for Cardiac Devices: An Update for Radiologists. Can Assoc Radiol J 2020; 72:814-830. [DOI: 10.1177/0846537120967701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Magnetic resonance imaging (MRI) is a unique and powerful diagnostic tool that provides images without ionizing radiation and, at times, can be the only modality to properly assess and diagnose some pathologies. Although many patients will need an MRI in their lifetime, many of them are still being unjustly denied access to it due to what were once considered absolute contraindications, including MR nonconditional pacemakers and implantable cardioverter-defibrillators. However, there are a number of large studies that have recently demonstrated that MRI can safely be performed in these patients under certain conditions. In addition, there are an increasing number of novel cardiac devices implanted in patients who may require an MRI. Radiologists need to familiarize themselves with these devices, identify which patients with these devices can safely undergo MRI, and under which conditions. In this article, we will review the current literature on MR safety and cardiac devices, elaborate on how to safely image patients with cardiac devices, and share the expertise of our tertiary cardiac institute.
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Affiliation(s)
- Kiana Lebel
- The University of Sherbrooke, Montreal, Quebec, Canada
| | | | | | - Magali Pham
- Montreal Heart Institute, Montreal, Quebec, Canada
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Impairment of right ventricular strain evaluated by cardiovascular magnetic resonance feature tracking in patients with interstitial lung disease. Int J Cardiovasc Imaging 2020; 37:1073-1083. [PMID: 33113068 DOI: 10.1007/s10554-020-02079-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 10/19/2020] [Indexed: 12/22/2022]
Abstract
OBJECTIVES The aims of this study were to investigate the relationship between pulmonary hypertension (PH) and right ventricular (RV) strain, and to evaluate the prognostic value of RV strain by cardiac magnetic resonance (CMR) feature tracking for patients with interstitial lung disease (ILD). METHODS A total of seventy ILD patients (mean age: 71 ± 8 years, 39 [56%] males) who underwent CMR and right heart catheterization (RHC) were studied. Using a 1.5T magnetic resonance (MR) scanner, steady-state free precession cine MR images encompassing the RV were acquired in all patients and 20 control subjects. RV longitudinal strain were calculated with a feature tracking algorithm. PH was defined as a mean pulmonary artery pressure of more than 20 mmHg at rest and a pulmonary vascular resistance ≥3 Woods unit. RESULTS The RV longitudinal strain was significantly impaired in the ILD patients with PH (n=18) than ILD patients without PH (n=52) (-13.3 ± 5.4% vs. -16.9±5.4%, p=0.048). The RV longitudinal strain differed significantly between the ILD patients without PH and the controls (n=20) (-16.9 ± 5.4% vs. -20.8 ± 6.2%, p=0.002). Five of 70 (7%) patients died within one-year after CMR scan. Area under receiver operating characteristics curve for predicting death was 0.900 (95%CI: 0.800 to 1.000) for RV strain, 0.643 (95%CI: 0.454 to 0.832) for RVEF. CONCLUSIONS Presence of PH was associated with impairment of RV strain, and RV strain could predict short-term mortality in patients with ILD. RV strain by feature tracking might be useful as a non-invasive prognostic marker for patients with ILD.
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Ning X, Li X, Fan X, Chen K, Hua W, Liu Z, Dai Y, Chen X, Lu M, Zhao S, Zhang S. 3.0 T magnetic resonance imaging scanning on different body regions in patients with pacemakers. J Interv Card Electrophysiol 2020; 61:545-550. [PMID: 32808082 DOI: 10.1007/s10840-020-00854-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/12/2020] [Indexed: 11/28/2022]
Abstract
PURPOSE Magnetic resonance imaging (MRI) at 3.0 T is becoming more common, but there is a lack of sufficient evidence on the safety of a 3.0 T scan in patients with pacemakers. This study aimed to investigate the safety and practical concerns of 3.0 T scans for patients with MR-conditional pacemakers. METHODS Twenty consecutive patients were enrolled. A standardized protocol was developed by cardiologists, pacemaker engineers, and radiologists. Pacemaker interrogation was performed immediately before and after the scan. Scan-related adverse events were documented, and imaging quality was graded as level 1 to 4 by radiologists. RESULTS Twenty-three MRI scans of different body regions (brain = 13, lumbar spine = 4, cervical spine = 2, and heart = 4) were performed, and the average time of a scan was 25 ± 11 min. No significant changes in sensing amplitude (atrial 3.1 ± 1.1 mV vs. 2.9 ± 1.2 mV, P = 0.71; ventricular 9.3 ± 3.5 mV vs. 10.2 ± 3.4 mV, P = 0.46), lead impedances (atrial 647 ± 146 Ω vs. 627 ± 151 Ω, P = 0.7; ventricular: 780 ± 247 Ω vs.711 ± 226 Ω, P = 0.36), or pacing threshold (atrial 0.6 ± 0.2 V/0.4 ms vs. 0.6 ± 0.2 V/0.4 ms, P = 0.71; ventricular 0.7 ± 0.3 V/0.4 ms vs. 0.7 ± 0.2 V/0.4 ms, P = 0.85) were observed pre- and postscan. No adverse events were detected. Image quality review showed grade 1 quality in 16 patients and grade 2 quality in 4 patients with artifacts of pulse generators and leads in cardiac MRI scan and no impact on diagnostic value. CONCLUSION Our initial data indicated that 3.0 T scanning might be feasible under a standardized protocol with good diagnostic imaging quality irrespective of body region in patients with MR-conditional pacemakers.
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Affiliation(s)
- Xiaohui Ning
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China
| | - Xiaofei Li
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China
| | - Xiaohan Fan
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China.
| | - Keping Chen
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China
| | - Wei Hua
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China
| | - Zhimin Liu
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China
| | - Yan Dai
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China
| | - Xiuyu Chen
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China
| | - Minjie Lu
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China
| | - Shihua Zhao
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China
| | - Shu Zhang
- Department of Arrhythmia, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, A 167 Bei Li Shi Road, Xicheng District, Beijing, 100037, China
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Re: Performing MRI on patients with MRI-conditional and non-conditional cardiac implantable electronic devices: an update for radiologists. Clin Radiol 2020; 75:391-393. [DOI: 10.1016/j.crad.2020.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 11/30/2022]
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