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El-Nashar H, Sabry M, Tseng YT, Francis N, Latif N, Parker KH, Moore JE, Yacoub MH. Multiscale structure and function of the aortic valve apparatus. Physiol Rev 2024; 104:1487-1532. [PMID: 37732828 DOI: 10.1152/physrev.00038.2022] [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: 12/07/2022] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/22/2023] Open
Abstract
Whereas studying the aortic valve in isolation has facilitated the development of life-saving procedures and technologies, the dynamic interplay of the aortic valve and its surrounding structures is vital to preserving their function across the wide range of conditions encountered in an active lifestyle. Our view is that these structures should be viewed as an integrated functional unit, here referred to as the aortic valve apparatus (AVA). The coupling of the aortic valve and root, left ventricular outflow tract, and blood circulation is crucial for AVA's functions: unidirectional flow out of the left ventricle, coronary perfusion, reservoir function, and support of left ventricular function. In this review, we explore the multiscale biological and physical phenomena that underlie the simultaneous fulfillment of these functions. A brief overview of the tools used to investigate the AVA, such as medical imaging modalities, experimental methods, and computational modeling, specifically fluid-structure interaction (FSI) simulations, is included. Some pathologies affecting the AVA are explored, and insights are provided on treatments and interventions that aim to maintain quality of life. The concepts explained in this article support the idea of AVA being an integrated functional unit and help identify unanswered research questions. Incorporating phenomena through the molecular, micro, meso, and whole tissue scales is crucial for understanding the sophisticated normal functions and diseases of the AVA.
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Affiliation(s)
- Hussam El-Nashar
- Aswan Heart Research Centre, Magdi Yacoub Foundation, Cairo, Egypt
- Department of Bioengineering, Imperial College London, London, United Kingdom
| | - Malak Sabry
- Aswan Heart Research Centre, Magdi Yacoub Foundation, Cairo, Egypt
- Department of Biomedical Engineering, King's College London, London, United Kingdom
| | - Yuan-Tsan Tseng
- Heart Science Centre, Magdi Yacoub Institute, London, United Kingdom
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Nadine Francis
- Aswan Heart Research Centre, Magdi Yacoub Foundation, Cairo, Egypt
- Department of Bioengineering, Imperial College London, London, United Kingdom
| | - Najma Latif
- Heart Science Centre, Magdi Yacoub Institute, London, United Kingdom
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Kim H Parker
- Department of Bioengineering, Imperial College London, London, United Kingdom
| | - James E Moore
- Department of Bioengineering, Imperial College London, London, United Kingdom
| | - Magdi H Yacoub
- Aswan Heart Research Centre, Magdi Yacoub Foundation, Cairo, Egypt
- Heart Science Centre, Magdi Yacoub Institute, London, United Kingdom
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
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2
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Shen H, Zhou W, ChunrongTu, Peng Y, Li X, Liu D, Wang X, Zhang X, Zeng X, Zhang J. Thoracic aorta injury detected by 4D flow MRI predicts subsequent main adverse cardiovascular events in breast cancer patients receiving anthracyclines: A longitudinal study. Magn Reson Imaging 2024; 109:67-73. [PMID: 38484947 DOI: 10.1016/j.mri.2024.03.010] [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: 01/20/2024] [Revised: 03/02/2024] [Accepted: 03/08/2024] [Indexed: 04/09/2024]
Abstract
PURPOSE To investigate longitudinal thoracic aorta injury using 3-dimensional phase-contrast magnetic resonance imaging (4D flow MRI) parameters and to evaluate their value for predicting the subsequent main adverse cardiovascular events (MACEs) in breast cancer patients receiving anthracyclines. METHODS Between July 2020 and July 2021, eighty-eight female participants with breast cancer scheduled to receive anthracyclines with or without trastuzumab prospectively enrolled. Each subjects underwent 4D flow MRI at baseline, 3 and 6 months in relation to baseline. The diameter, peak velocity (Vpeak), wall shear stress (WSS), pulse wave velocity (PWV), energy loss (EL) and pressure gradient (PG) of thoracic aorta were measured. The association between these parameters and subsequent MACEs was performed by Cox proportional hazard models. RESULTS Ten participants had subsequently MACEs. The Vpeak and PG gradually decreased and the WSS, PWV and EL progressively increased at 3 and 6 months compared with baseline. Adjusted multivariable analysis showed that the WSS of the proximal, mid- and distal ascending aorta [HR, 1.314 (95% confidence interval (CI): 1.003, 1.898)], [HR, 1.320 (95% CI: 1.002, 1.801)] and [HR, 1.322 (95% CI: 1.001, 1.805)] and PWV of ascending aorta [HR, 2.223 (95% CI: 1.010, 4.653)] at 3 months were associated with subsequent MACEs. Combined WSS and PWV of ascending aorta at 3 months yielded the highest AUC (0.912) for predicting subsequent MACEs. CONCLUSION Combined WSS and PWV of ascending aorta at 3 months is helpful for predicting the subsequent MACEs in breast cancer patients treated by anthracyclines.
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Affiliation(s)
- Hesong Shen
- Department of Radiology, Chongqing University Cancer Hospital & ChongqingCancer Institute & Chongqing Cancer Hospital, 181 Hanyu Road, Shapingba District, Chongqing, China
| | - Wenqi Zhou
- Department of Breast Cancer Center, Chongqing University Cancer Hospital & Chongqing Cancer Institute & Chongqing Cancer Hospital, 181 Hanyu Road, Shapingba District, Chongqing, China
| | - ChunrongTu
- Department of Radiology, Chongqing University Cancer Hospital & ChongqingCancer Institute & Chongqing Cancer Hospital, 181 Hanyu Road, Shapingba District, Chongqing, China
| | - Yangling Peng
- Department of Radiology, Chongqing University Cancer Hospital & ChongqingCancer Institute & Chongqing Cancer Hospital, 181 Hanyu Road, Shapingba District, Chongqing, China
| | - Xiaoqin Li
- Department of Radiology, Chongqing University Cancer Hospital & ChongqingCancer Institute & Chongqing Cancer Hospital, 181 Hanyu Road, Shapingba District, Chongqing, China
| | - Daihong Liu
- Department of Radiology, Chongqing University Cancer Hospital & ChongqingCancer Institute & Chongqing Cancer Hospital, 181 Hanyu Road, Shapingba District, Chongqing, China
| | - Xiaoxia Wang
- Department of Radiology, Chongqing University Cancer Hospital & ChongqingCancer Institute & Chongqing Cancer Hospital, 181 Hanyu Road, Shapingba District, Chongqing, China
| | - Xiaoyong Zhang
- Clinical Science, Philips Healthcare, 1268 Tianfu Avenue, Hitech Zone, Chengdu, China
| | - Xiaohua Zeng
- Department of Breast Cancer Center, Chongqing University Cancer Hospital & Chongqing Cancer Institute & Chongqing Cancer Hospital, 181 Hanyu Road, Shapingba District, Chongqing, China.
| | - Jiuquan Zhang
- Department of Radiology, Chongqing University Cancer Hospital & ChongqingCancer Institute & Chongqing Cancer Hospital, 181 Hanyu Road, Shapingba District, Chongqing, China.
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3
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Kiljander T, Kauhanen P, Sillanmäki S, Lottonen-Raikaslehto L, Husso M, Ylä-Herttuala E, Saari P, Kokkonen J, Laukkanen J, Mustonen P, Hedman M. Repaired coarctation of the aorta does not affect four-dimensional flow metrics in bicuspid aortic valve disease. INTERDISCIPLINARY CARDIOVASCULAR AND THORACIC SURGERY 2024; 38:ivae086. [PMID: 38704861 PMCID: PMC11101282 DOI: 10.1093/icvts/ivae086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 03/21/2024] [Accepted: 05/02/2024] [Indexed: 05/07/2024]
Abstract
OBJECTIVES The objective of this study was primarily to compare four-dimensional flow magnetic resonance imaging metrics in the ascending aorta (AA) of patients with right-left fusion type bicuspid aortic valve (RL-BAV) and repaired coarctation of the aorta (CoA) to RL-BAV without CoA. Metrics of patients with RL-BAV were also compared to the matched group of patients with common tricuspid aortic valve (TAV). METHODS Eleven patients with RL-BAV and CoA, 11 patients with RL-BAV without CoA and 22 controls with TAV were investigated. Peak velocity (cm/s), peak flow (ml/s) and flow displacement (%) were analysed at 5 pre-defined AA levels. In addition, regional wall shear stress (WSS, mN/m2), circumferential WSS (WSSc) and axial WSS (WSSa) at all levels were quantified in 6 sectors of the aortic circle. Averaged WSS values on each level (WSSavg, WSSc, avg and WSSa, avg) were calculated as well. RESULTS Peak velocity at the proximal tubular AA was significantly lower in BAV and CoA group (P = 0.047) compared to BAV without CoA. In addition, the WSSa, avg was found to be higher for the BAV and CoA group at proximal AA respectively (P = 0.040). No other significant differences were found between these groups. BAV group's peak velocity was higher at every level (P < 0.001-0.004) compared to TAV group. Flow displacement was significantly higher for the BAV group at every level (P < 0.001) besides at the most distal level. All averaged WSS values were significantly higher in BAV patients in distal AA (P < 0.001-0.018). CONCLUSIONS Repaired CoA does not relevantly alter four-dimensional flow metrics in the AA of patients with RL-BAV. However, RL-BAV majorly alters flow dynamics in the AA when compared to patients with TAV. CLINICAL TRIAL REGISTRATION NUMBER https://www.clinicaltrials.gov/study/NCT05065996, Unique Protocol ID 5063566.
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Affiliation(s)
- Teemu Kiljander
- Department of Cardiology, Tampere University Hospital, Heart Hospital NOVA, Jyväskylä, Finland
- Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Petteri Kauhanen
- Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Saara Sillanmäki
- Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
- Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | | | - Minna Husso
- Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Elias Ylä-Herttuala
- Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
- A.I. Virtanen Institute, University of Eastern Finland, Kuopio, Finland
| | - Petri Saari
- Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Jorma Kokkonen
- Department of Cardiology, Tampere University Hospital, Heart Hospital NOVA, Jyväskylä, Finland
| | - Jari Laukkanen
- Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
- Department of Medicine, Wellbeing Services County of Central Finland, Jyväskylä, Finland
| | - Pirjo Mustonen
- Department of Cardiology, , Heart Center, Turku University Hospital, Turku, Finland
| | - Marja Hedman
- Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
- Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
- Department of Cardiology, , Heart Center, Kuopio University Hospital, Kuopio, Finland
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4
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Leo I, Sabatino J, Avesani M, Moscatelli S, Bianco F, Borrelli N, De Sarro R, Leonardi B, Calcaterra G, Surkova E, Di Salvo G. Non-Invasive Imaging Assessment in Patients with Aortic Coarctation: A Contemporary Review. J Clin Med 2023; 13:28. [PMID: 38202035 PMCID: PMC10779918 DOI: 10.3390/jcm13010028] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/08/2023] [Accepted: 12/12/2023] [Indexed: 01/12/2024] Open
Abstract
Coarctation of the aorta (CoA) is a congenital abnormality characterized by a narrowing of the aortic lumen, which can lead to significant morbidity and mortality if left untreated. Even after repair and despite significant advances in therapeutic management, these patients have overall reduced long-term survival due to the consequences of chronic afterload increase. Cardiovascular imaging is key from the first diagnosis to serial follow-up. In recent years, novel imaging techniques have emerged, increasing accessibility to advanced imaging modalities and enabling early and non-invasive identification of complications after repair. The aim of this paper is to provide a comprehensive review of the role of different imaging techniques in the evaluation and management of patients with native or repaired CoA, highlighting their unique strengths and limitations.
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Affiliation(s)
- Isabella Leo
- Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy; (I.L.)
- CMR Unit, Royal Brompton and Harefield Hospitals, London SW3 5NP, UK;
| | - Jolanda Sabatino
- Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy; (I.L.)
- Pediatric Cardiology Unit, Department of Woman’s and Child’s Health, University Hospital of Padova, 35128 Padova, Italy;
| | - Martina Avesani
- Pediatric Cardiology Unit, Department of Woman’s and Child’s Health, University Hospital of Padova, 35128 Padova, Italy;
| | - Sara Moscatelli
- Centre for Inherited Cardiovascular Disease, Great Ormond Street Hospital, London WC1N 3JH, UK;
- Institute of Cardiovascular Sciences, University College London, London WC1E 6BT, UK
| | - Francesco Bianco
- Cardiovascular Sciences Department, AOU “Ospedali Riuniti”, 60126 Ancona, Italy;
| | - Nunzia Borrelli
- Adult Congenital Heart Disease Unit, AO dei Colli, Monaldi Hospital, 80131 Naples, Italy
| | - Rosalba De Sarro
- Department of Experimental and Clinical Medicine, University of Messina, 98166 Messina, Italy;
| | - Benedetta Leonardi
- Department of Pediatric Cardiology, Cardiac Surgery and Heart Lung Transplantation, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy;
| | | | - Elena Surkova
- CMR Unit, Royal Brompton and Harefield Hospitals, London SW3 5NP, UK;
| | - Giovanni Di Salvo
- Pediatric Cardiology Unit, Department of Woman’s and Child’s Health, University Hospital of Padova, 35128 Padova, Italy;
- Paediatric Research Institute (IRP), Città Della Speranza, 35127 Padua, Italy
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Martínez A, Hoeijmakers M, Geronzi L, Morgenthaler V, Tomasi J, Rochette M, Biancolini ME. Effect of turbulence and viscosity models on wall shear stress derived biomarkers for aorta simulations. Comput Biol Med 2023; 167:107603. [PMID: 37922602 DOI: 10.1016/j.compbiomed.2023.107603] [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: 09/12/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
Ascending aorta simulations provide insight into patient-specific hemodynamic conditions. Numerous studies have assessed fluid biomarkers which show a potential to aid clinicians in the diagnosis process. Unfortunately, there exists a large disparity in the computational methodology used to model turbulence and viscosity. Recognizing this disparity, some authors focused on analysing the influence of either the turbulence or viscosity models on the biomarkers in order to quantify the importance of these model choices. However, no analysis has yet been done on their combined effect. In order to fully understand and quantify the effect of the computational methodology, an assessment of the combined effect of turbulence and viscosity model choice was performed. Our results show that (1) non-Newtonian viscosity has greater impact (2.9-5.0%) on wall shear stress than Large Eddy Simulation turbulence modelling (0.1-1.4%), (2) the contribution of non-Newtonian viscosity is amplified when combined with a subgrid-scale turbulence model, (3) wall shear stress is underestimated when considering Newtonian viscosity by 2.9-5.0% and (4) cycle-to-cycle variability can impact the results as much as the numerical model if insufficient cycles are performed. These results demonstrate that, when assessing the effect of computational methodologies, the resultant combined effect of the different modelling assumptions differs from the aggregated effect of the isolated modifications. Accurate aortic flow modelling requires non-Newtonian viscosity and Large Eddy Simulation turbulence modelling.
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Affiliation(s)
- Antonio Martínez
- University of Rome Tor Vergata, Rome, Italy; Ansys France, Villeurbanne, France.
| | | | - Leonardo Geronzi
- University of Rome Tor Vergata, Rome, Italy; Ansys France, Villeurbanne, France
| | | | - Jacques Tomasi
- University of Rennes, CHU Rennes, Inserm, LTSI-UMR 1099, F-35000, Rennes, France
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Raza S, Aggarwal S, Jenkins P, Kharabish A, Anwer S, Cullington D, Jones J, Dua J, Papaioannou V, Ashrafi R, Moharem-Elgamal S. Coarctation of the Aorta: Diagnosis and Management. Diagnostics (Basel) 2023; 13:2189. [PMID: 37443581 DOI: 10.3390/diagnostics13132189] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023] Open
Abstract
Coarctation of the aorta (CoA) accounts for approximately 5-8% of all congenital heart defects. Depending on the severity of the CoA and the presence of associated cardiac lesions, the clinical presentation and age vary. Developments in diagnosis and management have improved outcomes in this patient population. Even after timely repair, it is important to regularly screen for hypertension. Patients with CoA require lifelong follow-up with a congenital heart disease specialist as these patients may develop recoarctation and complications at the repair site and remain at enhanced cardiovascular risk throughout their lifetime.
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Affiliation(s)
- Sadaf Raza
- Adult Congenital Heart Disease Centre, Liverpool Heart and Chest Hospital, Liverpool L14 3PE, UK
| | - Suneil Aggarwal
- Adult Congenital Heart Disease Centre, Liverpool Heart and Chest Hospital, Liverpool L14 3PE, UK
| | - Petra Jenkins
- Adult Congenital Heart Disease Centre, Liverpool Heart and Chest Hospital, Liverpool L14 3PE, UK
| | - Ahmed Kharabish
- Radiology Department, Liverpool Heart and Chest Hospital, Liverpool L14 3PE, UK
- Radiology Department, Al Kasr Al Aini, Old Cairo, Cairo 11562, Egypt
| | - Shehab Anwer
- Cardiology Department, University of Zurich, 8006 Zurich, Switzerland
| | - Damien Cullington
- Adult Congenital Heart Disease Centre, Liverpool Heart and Chest Hospital, Liverpool L14 3PE, UK
| | - Julia Jones
- Adult Congenital Heart Disease Centre, Liverpool Heart and Chest Hospital, Liverpool L14 3PE, UK
| | - Jaspal Dua
- Adult Congenital Heart Disease Centre, Liverpool Heart and Chest Hospital, Liverpool L14 3PE, UK
| | - Vasileios Papaioannou
- Adult Congenital Heart Disease Centre, Liverpool Heart and Chest Hospital, Liverpool L14 3PE, UK
| | - Reza Ashrafi
- Adult Congenital Heart Disease Centre, Liverpool Heart and Chest Hospital, Liverpool L14 3PE, UK
| | - Sarah Moharem-Elgamal
- Adult Congenital Heart Disease Centre, Liverpool Heart and Chest Hospital, Liverpool L14 3PE, UK
- Cardiology Department, National Heart Institute, Giza 11111, Egypt
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7
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Loose S, Solou D, Strecker C, Hennemuth A, Hüllebrand M, Grundmann S, Asmussen A, Treppner M, Urbach H, Harloff A. Characterization of aortic aging using 3D multi-parametric MRI-long-term follow-up in a population study. Sci Rep 2023; 13:6285. [PMID: 37072440 PMCID: PMC10111081 DOI: 10.1038/s41598-023-33219-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 04/10/2023] [Indexed: 05/03/2023] Open
Abstract
We comprehensively studied morphological and functional aortic aging in a population study using modern three-dimensional MR imaging to allow future comparison in patients with diseases of the aortic valve or aorta. We followed 80 of 126 subjects of a population study (20 to 80 years of age at baseline) using the identical methodology 6.0 ± 0.5 years later. All underwent 3 T MRI of the thoracic aorta including 3D T1 weighted MRI (spatial resolution 1 mm3) for measuring aortic diameter and plaque thickness and 4D flow MRI (spatial/temporal resolution = 2 mm3/20 ms) for calculating global and regional aortic pulse wave velocity (PWV) and helicity of aortic blood flow. Mean diameter of the ascending aorta (AAo) decreased and plaque thickness increased significantly in the aortic arch (AA) and descending aorta (DAo) in females. PWV of the thoracic aorta increased (6.4 ± 1.5 to 7.0 ± 1.7 m/s and 6.8 ± 1.5 to 7.3 ± 1.8 m/s in females and males, respectively) over time. Local normalized helicity volumes (LNHV) decreased significantly in the AAo and AA (0.33 to 0.31 and 0.34 to 0.32 in females and 0.34 to 0.32 and 0.32 to 0.28 in males). By contrast, helicity increased significantly in the DAo in both genders (0.28 to 0.29 and 0.29 to 0.30, respectively). 3D MRI was able to characterize changes in aortic diameter, plaque thickness, PWV and helicity during six years in our population. Aortic aging determined by 3D multi-parametric MRI is now available for future comparisons in patients with diseases of the aortic valve or aorta.
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Affiliation(s)
- Sophie Loose
- Department of Neurology and Neurophysiology, University Medical Center Freiburg, University of Freiburg, Breisacher Straße 64, 79106, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Demetris Solou
- Department of Neurology and Neurophysiology, University Medical Center Freiburg, University of Freiburg, Breisacher Straße 64, 79106, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christoph Strecker
- Department of Neurology and Neurophysiology, University Medical Center Freiburg, University of Freiburg, Breisacher Straße 64, 79106, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Anja Hennemuth
- Fraunhofer MEVIS, Bremen, Germany
- Institute of Computer-Assisted Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Markus Hüllebrand
- Fraunhofer MEVIS, Bremen, Germany
- Institute of Computer-Assisted Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Sebastian Grundmann
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Cardiology and Angiology I, Heart Center Freiburg University, University of Freiburg, Freiburg, Germany
| | - Alexander Asmussen
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Cardiology and Angiology I, Heart Center Freiburg University, University of Freiburg, Freiburg, Germany
| | - Martin Treppner
- Institute of Medical Biometry and Statistics, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg, Germany
| | - Horst Urbach
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Neuroradiology, Medical Center, University of Freiburg, Freiburg, Germany
| | - Andreas Harloff
- Department of Neurology and Neurophysiology, University Medical Center Freiburg, University of Freiburg, Breisacher Straße 64, 79106, Freiburg, Germany.
- Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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8
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Schafstedde M, Jarmatz L, Brüning J, Hüllebrand M, Nordmeyer S, Harloff A, Hennemuth A. Population-based reference values for 4D flow MRI derived aortic blood flow parameters. Physiol Meas 2023; 44. [PMID: 36735968 DOI: 10.1088/1361-6579/acb8fd] [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: 07/25/2022] [Accepted: 02/03/2023] [Indexed: 02/05/2023]
Abstract
Objective. This study assesses age-related differences of thoracic aorta blood flow profiles and provides age- and sex-specific reference values using 4D flow cardiovascular magnetic resonance (CMR) data.Approach. 126 volunteers (age 20-80 years, female 51%) underwent 4D flow CMR and 12 perpendicular analysis planes in the thoracic aorta were specified. For these planes the following parameters were evaluated: body surface area-adjusted aortic area (A'), normalized flow displacement (NFD), the degree of wall parallelism (WPD), the minimal relative cross-sectional area through which 80% of the volume flow passes (A80) and the angle between flow direction and centerline (α).Main results. Age-related differences in blood flow parameters were seen in the ascending aorta with higher values for NFD and angle and lower values for WPD and A80 in older subjects. All parameters describing blood flow patterns correlated with the cross-sectional area in the ascending aorta. No relevant sex-differences regarding blood flow profiles were found.Significance. These age- and sex-specific reference values for quantitative parameters describing blood flow within the aorta might help to study the clinical relevance of flow profiles in the future.
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Affiliation(s)
- Marie Schafstedde
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Department of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Berlin Institute of Health, Berlin, Germany.,Partner Site Berlin, German Centre for Cardiovascular Research (DZHK), Berlin, Germany
| | - Lina Jarmatz
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany
| | - Jan Brüning
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Partner Site Berlin, German Centre for Cardiovascular Research (DZHK), Berlin, Germany
| | - Markus Hüllebrand
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Fraunhofer MEVIS, Bremen, Germany
| | - Sarah Nordmeyer
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Department of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany
| | - Andreas Harloff
- Department of Neurology, University Medical Center Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Germany
| | - Anja Hennemuth
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Partner Site Berlin, German Centre for Cardiovascular Research (DZHK), Berlin, Germany.,Fraunhofer MEVIS, Bremen, Germany
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9
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Richards CE, Parker AE, Alfuhied A, McCann GP, Singh A. The role of 4-dimensional flow in the assessment of bicuspid aortic valve and its valvulo-aortopathies. Br J Radiol 2022; 95:20220123. [PMID: 35852109 PMCID: PMC9793489 DOI: 10.1259/bjr.20220123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Bicuspid aortic valve is the most common congenital cardiac malformation and the leading cause of aortopathy and aortic stenosis in younger patients. Aortic wall remodelling secondary to altered haemodynamic flow patterns, changes in peak velocity, and wall shear stress may be implicated in the development of aortopathy in the presence of bicuspid aortic valve and dysfunction. Assessment of these parameters as potential predictors of disease severity and progression is thus desirable. The anatomic and functional information acquired from 4D flow MRI can allow simultaneous visualisation and quantification of the pathological geometric and haemodynamic changes of the aorta. We review the current clinical utility of haemodynamic quantities including velocity, wall sheer stress and energy losses, as well as visual descriptors such as vorticity and helicity, and flow direction in assessing the aortic valve and associated aortopathies.
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Affiliation(s)
- Caryl Elizabeth Richards
- Department of Cardiovascular Sciences, University of Leicester and the National Institute for Health Research Leicester Biomedical Research Centre, Glenfield Hospital, Leicester, UK
| | - Alex E Parker
- Leicester Medical School, University of Leicester, Leicester, UK
| | - Aseel Alfuhied
- Department of Cardiovascular Sciences, University of Leicester and the National Institute for Health Research Leicester Biomedical Research Centre, Glenfield Hospital, Leicester, UK
| | - Gerry P McCann
- Department of Cardiovascular Sciences, University of Leicester and the National Institute for Health Research Leicester Biomedical Research Centre, Glenfield Hospital, Leicester, UK
| | - Anvesha Singh
- Department of Cardiovascular Sciences, University of Leicester and the National Institute for Health Research Leicester Biomedical Research Centre, Glenfield Hospital, Leicester, UK
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van Andel MM, van Ooij P, de Waard V, Gottwald LM, van Kimmenade RR, Scholte AJ, Dickinson MG, Zwinderman AH, Mulder BJ, Nederveen AJ, Groenink M. Abnormal aortic hemodynamics are associated with risk factors for aortic complications in patients with marfan syndrome. IJC HEART & VASCULATURE 2022; 43:101128. [PMID: 36268203 PMCID: PMC9576530 DOI: 10.1016/j.ijcha.2022.101128] [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: 06/19/2022] [Revised: 09/09/2022] [Accepted: 09/26/2022] [Indexed: 11/18/2022]
Abstract
Background It is difficult to assess the risk for aortic dissection beyond the aortic root in patients with Marfan syndrome (MFS). To aid risk assessment in these patients, we investigated aortic flow and wall shear stress (WSS) by 4D flow magnetic resonance imaging (MRI) in patients with MFS and compared the results with healthy volunteers. We hypothesized that MFS patients with a high-risk profile for aortic dissection would show abnormal hemodynamics in aortic regions associated with aortic dissection. Methods MFS patients (n = 55) and healthy subjects (n = 25), matched for age and sex, prospectively underwent 4D flow MRI. 4D flow maps were constructed to detect elevated (defined as higher than the three-dimensional 95 % confidence interval) and deviant directed (defined as vector angle differences higher than 120°) WSS in MFS patients as compared to the controls. Univariate and multivariate associations with risk factors for aortic dissection in MFS patients were assessed. Results The maximum incidence for elevated WSS was 20 % (CI 9 %-31 %) and found in the ascending aorta. The maximum for deviant directed WSS was 39 % (CI 26 %-52 %) and found in the inner descending aorta. Significantly more male patients had deviant directed WSS in the inner proximal descending aorta (63 % vs 24 %, p = 0.014). Multivariate analysis showed that deviant directed WSS was associated with male sex (p = 0.019), and a haplo-insufficient FBN1 mutation type (p = 0.040). In 60 % of MFS patients with a previous aortic root replacement surgery, abnormal hemodynamics were found in the ascending aorta. No significant differences between hemodynamics were found in the descending aorta between operated and non-operated patients. Conclusion Deviant directed WSS in the proximal descending aorta is associated with known risk factors for aortic dissection in MFS patients, namely male sex and a haploinsufficient FBN1 mutation type.
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Affiliation(s)
- Mitzi M. van Andel
- Department of Cardiology, Amsterdam University Medical Center, Amsterdam, the Netherlands
| | - Pim van Ooij
- Department of Radiology & Nuclear Medicine, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Vivian de Waard
- Department of Medical Biochemistry, Amsterdam University Medical Center, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Lukas M. Gottwald
- Department of Radiology & Nuclear Medicine, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | | | - Arthur J. Scholte
- Department of Cardiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Michael G. Dickinson
- Department of Cardiology, University Medical Center Groningen, Groningen, the Netherlands
| | - Aeilko H. Zwinderman
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Amsterdam University Medical Center, Amsterdam, the Netherlands
| | - Barbara J.M. Mulder
- Department of Cardiology, Amsterdam University Medical Center, Amsterdam, the Netherlands
| | - Aart J. Nederveen
- Department of Radiology & Nuclear Medicine, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Maarten Groenink
- Department of Cardiology, Amsterdam University Medical Center, Amsterdam, the Netherlands,Department of Radiology & Nuclear Medicine, Amsterdam University Medical Centers, Amsterdam, the Netherlands,Corresponding author at: Amsterdam UMC, University of Amsterdam, Department of Cardiology and Radiology, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands.
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Anfinogenova ND, Sinitsyn VE, Kozlov BN, Panfilov DS, Popov SV, Vrublevsky AV, Chernyavsky A, Bergen T, Khovrin VV, Ussov WY. Existing and Emerging Approaches to Risk Assessment in Patients with Ascending Thoracic Aortic Dilatation. J Imaging 2022; 8:jimaging8100280. [PMID: 36286374 PMCID: PMC9605541 DOI: 10.3390/jimaging8100280] [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: 08/28/2022] [Revised: 09/20/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022] Open
Abstract
Ascending thoracic aortic aneurysm is a life-threatening disease, which is difficult to detect prior to the occurrence of a catastrophe. Epidemiology patterns of ascending thoracic aortic dilations/aneurysms remain understudied, whereas the risk assessment of it may be improved. The electronic databases PubMed/Medline 1966–2022, Web of Science 1975–2022, Scopus 1975–2022, and RSCI 1994–2022 were searched. The current guidelines recommend a purely aortic diameter-based assessment of the thoracic aortic aneurysm risk, but over 80% of the ascending aorta dissections occur at a size that is lower than the recommended threshold of 55 mm. Moreover, a 55 mm diameter criterion could exclude a vast majority (up to 99%) of the patients from preventive surgery. The authors review several visualization-based and alternative approaches which are proposed to better predict the risk of dissection in patients with borderline dilated thoracic aorta. The imaging-based assessments of the biomechanical aortic properties, the Young’s elastic modulus, the Windkessel function, compliance, distensibility, wall shear stress, pulse wave velocity, and some other parameters have been proposed to improve the risk assessment in patients with ascending thoracic aortic aneurysm. While the authors do not argue for shifting the diameter threshold to the left, they emphasize the need for more personalized solutions that integrate the imaging data with the patient’s genotypes and phenotypes in this heterogeneous pathology.
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Affiliation(s)
- Nina D. Anfinogenova
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634012, Russia
- Correspondence: ; Tel.: +7-9095390220
| | | | - Boris N. Kozlov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634012, Russia
| | - Dmitry S. Panfilov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634012, Russia
| | - Sergey V. Popov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634012, Russia
| | - Alexander V. Vrublevsky
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634012, Russia
| | | | - Tatyana Bergen
- E. Meshalkin National Medical Research Center, Novosibirsk 630055, Russia
| | - Valery V. Khovrin
- Petrovsky National Research Centre of Surgery, Moscow 119991, Russia
| | - Wladimir Yu. Ussov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634012, Russia
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Trenti C, Ziegler M, Bjarnegård N, Ebbers T, Lindenberger M, Dyverfeldt P. Wall shear stress and relative residence time as potential risk factors for abdominal aortic aneurysms in males: a 4D flow cardiovascular magnetic resonance case-control study. J Cardiovasc Magn Reson 2022; 24:18. [PMID: 35303893 PMCID: PMC8932193 DOI: 10.1186/s12968-022-00848-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 02/17/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Abdominal aortic aneurysms (AAA) can lead to catastrophic events such as dissection or rupture, and are an expression of general aortic disease. Low wall shear stress (WSS), high oscillatory shear index (OSI), and high relative residence time (RRT) have been correlated against increased uptake of inflammatory markers in the vessel wall and may improve risk stratification of AAA. We sought to obtain a comprehensive view of WSS, OSI, and RRT in the whole aorta for patients with AAA and age-matched elderly controls and young normal controls. METHODS 4D Flow cardiovascular magnetic resonance images of the whole aorta were acquired in 18 AAA patients (70.8 ± 3.4 years), 22 age-matched controls (71.4 ± 3.4 years), and 23 young subjects (23.3 ± 3.1 years), all males. Three-dimensional segmentations of the whole aorta were created for all timeframes using a semi-automatic approach. The aorta was divided into five segments: ascending aorta, arch, descending aorta, suprarenal and infrarenal abdominal aorta. For each segment, average values of peak WSS, OSI, and RRT were computed. Student's t-tests were used to compare values between the three cohorts (AAA patients vs elderly controls, and elderly controls vs young controls) where the data were normally distributed, and the non-parametric Wilcoxon rank sum tests were used otherwise. RESULTS AAA patients had lower peak WSS in the descending aorta as well as in the abdominal aorta compared to elderly controls (p ≤ 0.001), similar OSI, but higher RRT in the descending and abdominal aorta (p ≤ 0.001). Elderly controls had lower peak WSS compared to young controls throughout the aorta (p < 0.001), higher OSI in all segments except for the infrarenal aorta (p < 0.001), and higher RRT throughout the aorta, except the infrarenal aorta (p < 0.001). CONCLUSIONS This study provides novel insights into WSS, OSI, and RRT in patients with AAA in relation to normal ageing, highlighting how AAA patients have markedly abnormal hemodynamic stresses not only in the infrarenal, but in the entire aorta. Moreover, we identified RRT as a marker for abnormal AAA hemodynamics. Further investigations are needed to explore if RRT or other measures of hemodynamics stresses best predict AAA growth and/or rupture.
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Affiliation(s)
- Chiara Trenti
- Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden.
| | - Magnus Ziegler
- Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Niclas Bjarnegård
- Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Tino Ebbers
- Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
| | - Marcus Lindenberger
- Department of Cardiology in Linköping, and Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Petter Dyverfeldt
- Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden
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