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Zezular I, Hanse LC, Choe HJ, Craiem D, Lugones I. Eleven Years After Scimitar Syndrome Repair With the Lugones Technique: Usefulness of Four-Dimensional Flow Magnetic Resonance Imaging. World J Pediatr Congenit Heart Surg 2024; 15:515-518. [PMID: 38711171 DOI: 10.1177/21501351241232591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Anatomic and physiologic assessment of surgical repair of scimitar syndrome can be challenging. We evaluated the first patient who underwent the Lugones procedure in 2012 using 4D flow magnetic resonance imaging. With this technology, we demonstrate that the reconstructed right pulmonary venous return drains into the left atrium with laminar flow, just as normal pulmonary veins do.
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Affiliation(s)
- Idara Zezular
- Cardiac Surgery Unit, Hospital Provincial Neuquén "Dr. Eduardo Castro Rendón", Neuquén, Argentina
- Cardiac Surgery Unit, Hospital General de Niños "Dr. Pedro de Elizalde", Buenos Aires, Argentina
| | - Lisa Carlson Hanse
- Department of Cardiothoracic and Vascular Surgery, Rigshospitalet, Copenhagen, Denmark
| | - Hyon Ju Choe
- Department of Cardiology, Hospital de Niños "Dr. Ricardo Gutierrez", Buenos Aires, Argentina
- Cardioimaging Section, Argus Diagnóstico Médico, Buenos Aires, Argentina
| | - Damian Craiem
- Institute of Translational Medicine, Transplantation and Bioengineering (IMeTTyB), Universidad Favaloro-CONICET, Buenos Aires, Argentina
| | - Ignacio Lugones
- Cardiac Surgery Unit, Hospital General de Niños "Dr. Pedro de Elizalde", Buenos Aires, Argentina
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2
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Sakhi H, Soulat G, Craiem D, Gencer U, Lamy J, Stipechi V, Puscas T, Hulot JS, Hagege A, Mousseaux E. Association of Impaired Left Ventricular Mitral Filling from 4D Flow Cardiac MRI and Prognosis of Hypertrophic Cardiomyopathy. Radiol Cardiothorac Imaging 2024; 6:e230198. [PMID: 38512023 PMCID: PMC11058532 DOI: 10.1148/ryct.230198] [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: 07/20/2023] [Revised: 11/21/2023] [Accepted: 02/05/2024] [Indexed: 03/22/2024]
Abstract
Purpose To investigate whether the peak early filling rate normalized to the filling volume (PEFR/FV) estimated from four-dimensional (4D) flow cardiac MRI may be used to assess impaired left ventricular (LV) filling and predict clinical outcomes in individuals with hypertrophic cardiomyopathy (HCM). Materials and Methods Cardiac MRI with a 4D flow sequence and late gadolinium enhancement (LGE), as well as echocardiography, was performed in 88 individuals: 44 participants with HCM from a French prospective registry (ClinicalTrials.gov; NCT01091480) and 44 healthy volunteers matched for age and sex. In participants with HCM, a composite primary end point was assessed at follow-up, including unexplained syncope, new-onset atrial fibrillation, hospitalization for congestive heart failure, ischemic stroke, sustained ventricular arrhythmia, septal reduction therapy, and cardiac death. A Cox proportional hazard model was used to analyze associations with the primary end point. Results PEFR/FV was significantly lower in the HCM group (mean age, 51.8 years ± 18.5 [SD]; 29 male participants) compared with healthy volunteers (mean, 3.35 sec-1 ± 0.99 [0.90-5.20] vs 4.42 sec-1 ± 1.68 [2.74-11.86]; P < .001) and correlated with both B-type natriuretic peptide (BNP) level (r = -0.31; P < .001) and the ratio of pulsed Doppler early transmitral inflow to Doppler tissue imaging annulus velocities (E/E'; r = -0.54; P < .001). At a median follow-up of 2.3 years (IQR, 1.7-3.3 years), the primary end point occurred in 14 (32%) participants. A PEFR/FV of 2.61 sec-1 or less was significantly associated with occurrence of the primary end point (hazard ratio, 9.46 [95% CI: 2.61, 45.17; P < .001] to 15.21 [95% CI: 3.51, 80.22; P < .001]), independently of age, BNP level, E/E', LGE extent, and LV and left atrial strain according to successive bivariate models. Conclusion In HCM, LV filling evaluated with 4D flow cardiac MRI correlated with Doppler and biologic indexes of diastolic dysfunction and predicted clinical outcomes. Keywords: Diastolic Function, Left Ventricular Filling, Hypertrophic Cardiomyopathy, Cardiac MRI, 4D Flow Sequence Clinical trial registration no. NCT01091480 Supplemental material is available for this article. © RSNA, 2024.
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Affiliation(s)
- Hichem Sakhi
- From the Department of Radiology, AP-HP, Hôpital
Européen Georges-Pompidou, 20-40 rue Leblanc, 75015 Paris, France (H.S.,
G.S., U.G., J.L., T.P., J.S.H., A.H., E.M.); Institut National de la
Santé et de la Recherche Médicale, PARCC, Paris, France (G.S.,
U.G., J.L., J.S.H., A.H., E.M.); Université de Paris-Cité, Paris,
France (G.S., J.S.H., A.H., E.M.); and Instituto de Medicina Traslacional,
Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET,
Buenos Aires, Argentina (D.C., V.S.)
| | - Gilles Soulat
- From the Department of Radiology, AP-HP, Hôpital
Européen Georges-Pompidou, 20-40 rue Leblanc, 75015 Paris, France (H.S.,
G.S., U.G., J.L., T.P., J.S.H., A.H., E.M.); Institut National de la
Santé et de la Recherche Médicale, PARCC, Paris, France (G.S.,
U.G., J.L., J.S.H., A.H., E.M.); Université de Paris-Cité, Paris,
France (G.S., J.S.H., A.H., E.M.); and Instituto de Medicina Traslacional,
Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET,
Buenos Aires, Argentina (D.C., V.S.)
| | - Damian Craiem
- From the Department of Radiology, AP-HP, Hôpital
Européen Georges-Pompidou, 20-40 rue Leblanc, 75015 Paris, France (H.S.,
G.S., U.G., J.L., T.P., J.S.H., A.H., E.M.); Institut National de la
Santé et de la Recherche Médicale, PARCC, Paris, France (G.S.,
U.G., J.L., J.S.H., A.H., E.M.); Université de Paris-Cité, Paris,
France (G.S., J.S.H., A.H., E.M.); and Instituto de Medicina Traslacional,
Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET,
Buenos Aires, Argentina (D.C., V.S.)
| | - Umit Gencer
- From the Department of Radiology, AP-HP, Hôpital
Européen Georges-Pompidou, 20-40 rue Leblanc, 75015 Paris, France (H.S.,
G.S., U.G., J.L., T.P., J.S.H., A.H., E.M.); Institut National de la
Santé et de la Recherche Médicale, PARCC, Paris, France (G.S.,
U.G., J.L., J.S.H., A.H., E.M.); Université de Paris-Cité, Paris,
France (G.S., J.S.H., A.H., E.M.); and Instituto de Medicina Traslacional,
Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET,
Buenos Aires, Argentina (D.C., V.S.)
| | - Jérôme Lamy
- From the Department of Radiology, AP-HP, Hôpital
Européen Georges-Pompidou, 20-40 rue Leblanc, 75015 Paris, France (H.S.,
G.S., U.G., J.L., T.P., J.S.H., A.H., E.M.); Institut National de la
Santé et de la Recherche Médicale, PARCC, Paris, France (G.S.,
U.G., J.L., J.S.H., A.H., E.M.); Université de Paris-Cité, Paris,
France (G.S., J.S.H., A.H., E.M.); and Instituto de Medicina Traslacional,
Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET,
Buenos Aires, Argentina (D.C., V.S.)
| | - Valentina Stipechi
- From the Department of Radiology, AP-HP, Hôpital
Européen Georges-Pompidou, 20-40 rue Leblanc, 75015 Paris, France (H.S.,
G.S., U.G., J.L., T.P., J.S.H., A.H., E.M.); Institut National de la
Santé et de la Recherche Médicale, PARCC, Paris, France (G.S.,
U.G., J.L., J.S.H., A.H., E.M.); Université de Paris-Cité, Paris,
France (G.S., J.S.H., A.H., E.M.); and Instituto de Medicina Traslacional,
Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET,
Buenos Aires, Argentina (D.C., V.S.)
| | - Tania Puscas
- From the Department of Radiology, AP-HP, Hôpital
Européen Georges-Pompidou, 20-40 rue Leblanc, 75015 Paris, France (H.S.,
G.S., U.G., J.L., T.P., J.S.H., A.H., E.M.); Institut National de la
Santé et de la Recherche Médicale, PARCC, Paris, France (G.S.,
U.G., J.L., J.S.H., A.H., E.M.); Université de Paris-Cité, Paris,
France (G.S., J.S.H., A.H., E.M.); and Instituto de Medicina Traslacional,
Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET,
Buenos Aires, Argentina (D.C., V.S.)
| | - Jean-Sébastien Hulot
- From the Department of Radiology, AP-HP, Hôpital
Européen Georges-Pompidou, 20-40 rue Leblanc, 75015 Paris, France (H.S.,
G.S., U.G., J.L., T.P., J.S.H., A.H., E.M.); Institut National de la
Santé et de la Recherche Médicale, PARCC, Paris, France (G.S.,
U.G., J.L., J.S.H., A.H., E.M.); Université de Paris-Cité, Paris,
France (G.S., J.S.H., A.H., E.M.); and Instituto de Medicina Traslacional,
Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET,
Buenos Aires, Argentina (D.C., V.S.)
| | - Albert Hagege
- From the Department of Radiology, AP-HP, Hôpital
Européen Georges-Pompidou, 20-40 rue Leblanc, 75015 Paris, France (H.S.,
G.S., U.G., J.L., T.P., J.S.H., A.H., E.M.); Institut National de la
Santé et de la Recherche Médicale, PARCC, Paris, France (G.S.,
U.G., J.L., J.S.H., A.H., E.M.); Université de Paris-Cité, Paris,
France (G.S., J.S.H., A.H., E.M.); and Instituto de Medicina Traslacional,
Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET,
Buenos Aires, Argentina (D.C., V.S.)
| | - Elie Mousseaux
- From the Department of Radiology, AP-HP, Hôpital
Européen Georges-Pompidou, 20-40 rue Leblanc, 75015 Paris, France (H.S.,
G.S., U.G., J.L., T.P., J.S.H., A.H., E.M.); Institut National de la
Santé et de la Recherche Médicale, PARCC, Paris, France (G.S.,
U.G., J.L., J.S.H., A.H., E.M.); Université de Paris-Cité, Paris,
France (G.S., J.S.H., A.H., E.M.); and Instituto de Medicina Traslacional,
Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET,
Buenos Aires, Argentina (D.C., V.S.)
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Soulat G, Alattar Y, Ladouceur M, Craiem D, Pascaner A, Gencer U, Malekzadeh-Milani S, Iserin L, Karsenty C, Mousseaux E. Discordance between 2D and 4D flow in the assessment of pulmonary regurgitation severity: a right ventricular remodeling follow-up study. Eur Radiol 2023; 33:5455-5464. [PMID: 36905468 DOI: 10.1007/s00330-023-09502-6] [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: 08/12/2022] [Revised: 12/06/2022] [Accepted: 02/06/2023] [Indexed: 03/12/2023]
Abstract
OBJECTIVES Pulmonary regurgitation (PR) is common in adult congenital heart disease (ACHD). 2D phase contrast MRI is the reference method for the quantification of PR and helps in the decision of pulmonary valve replacement (PVR). 4D flow MRI can be an alternative method to estimate PR but more validation is still needed. Our purpose was to compare 2D and 4D flow in PR quantification using the degree of right ventricular remodeling after PVR as the reference standard. METHODS In 30 adult patients with a pulmonary valve disease recruited between 2015 and 2018, PR was assessed using both 2D and 4D flow. Based on the clinical standard of care, 22 underwent PVR. The pre PVR estimate of PR was compared using the post-operative decrease in right ventricle end-diastolic volume on follow-up exam as reference. RESULTS In the overall cohort, regurgitant volume (Rvol) and regurgitant fraction (RF) of PR measured by 2D and 4D flow were well correlated but with moderate agreement in the overall cohort (r = 0.90, mean diff. -14 ± 12.5 mL; and r = 0.72, mean diff. -15 ± 13%; all p < 0.0001). Correlations between Rvol estimates and right ventricle end-diastolic volume decrease after PVR was higher with 4D flow (r = 0.80, p < 0.0001) than with 2D flow (r = 0.72, p < 0.0001). CONCLUSIONS In ACHD, PR quantification from 4D flow better predicts post-PVR right ventricle remodeling than that from 2D flow. Further studies are needed to evaluate the added value of this 4D flow quantification for guiding replacement decision. KEY POINTS • Using 4D flow MRI allows a better quantification of pulmonary regurgitation in adult congenital heart disease than 2D flow when taking right ventricle remodeling after pulmonary valve replacement as a reference. • A plane positioned perpendicular to the ejected flow volume as allowed by 4D flow provides better results to estimate pulmonary regurgitation.
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Affiliation(s)
- Gilles Soulat
- Université Paris cité, PARCC (Paris-Cardiovascular Research Center), INSERM 970, 20 rue Leblanc, F-75015, Paris, France.
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015, Paris, France.
| | - Yousef Alattar
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015, Paris, France
| | - Magalie Ladouceur
- Université Paris cité, PARCC (Paris-Cardiovascular Research Center), INSERM 970, 20 rue Leblanc, F-75015, Paris, France
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015, Paris, France
| | - Damian Craiem
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET, Buenos Aires, Argentina
| | - Ariel Pascaner
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET, Buenos Aires, Argentina
| | - Umit Gencer
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015, Paris, France
| | - Sophie Malekzadeh-Milani
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015, Paris, France
| | - Laurence Iserin
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015, Paris, France
| | - Clement Karsenty
- Université Paris cité, PARCC (Paris-Cardiovascular Research Center), INSERM 970, 20 rue Leblanc, F-75015, Paris, France
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015, Paris, France
| | - Elie Mousseaux
- Université Paris cité, PARCC (Paris-Cardiovascular Research Center), INSERM 970, 20 rue Leblanc, F-75015, Paris, France
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015, Paris, France
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Barrera-Naranjo A, Marin-Castrillon DM, Decourselle T, Lin S, Leclerc S, Morgant MC, Bernard C, De Oliveira S, Boucher A, Presles B, Bouchot O, Christophe JJ, Lalande A. Segmentation of 4D Flow MRI: Comparison between 3D Deep Learning and Velocity-Based Level Sets. J Imaging 2023; 9:123. [PMID: 37367471 DOI: 10.3390/jimaging9060123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/30/2023] [Accepted: 06/15/2023] [Indexed: 06/28/2023] Open
Abstract
A thoracic aortic aneurysm is an abnormal dilatation of the aorta that can progress and lead to rupture. The decision to conduct surgery is made by considering the maximum diameter, but it is now well known that this metric alone is not completely reliable. The advent of 4D flow magnetic resonance imaging has allowed for the calculation of new biomarkers for the study of aortic diseases, such as wall shear stress. However, the calculation of these biomarkers requires the precise segmentation of the aorta during all phases of the cardiac cycle. The objective of this work was to compare two different methods for automatically segmenting the thoracic aorta in the systolic phase using 4D flow MRI. The first method is based on a level set framework and uses the velocity field in addition to 3D phase contrast magnetic resonance imaging. The second method is a U-Net-like approach that is only applied to magnitude images from 4D flow MRI. The used dataset was composed of 36 exams from different patients, with ground truth data for the systolic phase of the cardiac cycle. The comparison was performed based on selected metrics, such as the Dice similarity coefficient (DSC) and Hausdorf distance (HD), for the whole aorta and also three aortic regions. Wall shear stress was also assessed and the maximum wall shear stress values were used for comparison. The U-Net-based approach provided statistically better results for the 3D segmentation of the aorta, with a DSC of 0.92 ± 0.02 vs. 0.86 ± 0.5 and an HD of 21.49 ± 24.8 mm vs. 35.79 ± 31.33 mm for the whole aorta. The absolute difference between the wall shear stress and ground truth slightly favored the level set method, but not significantly (0.754 ± 1.07 Pa vs. 0.737 ± 0.79 Pa). The results showed that the deep learning-based method should be considered for the segmentation of all time steps in order to evaluate biomarkers based on 4D flow MRI.
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Affiliation(s)
| | | | | | - Siyu Lin
- IFTIM, ICMUB Laboratory, University of Burgundy, 21078 Dijon, France
| | - Sarah Leclerc
- IFTIM, ICMUB Laboratory, University of Burgundy, 21078 Dijon, France
| | - Marie-Catherine Morgant
- IFTIM, ICMUB Laboratory, University of Burgundy, 21078 Dijon, France
- Department of Cardio-Vascular and Thoracic Surgery, University Hospital of Dijon, 21078 Dijon, France
| | - Chloé Bernard
- IFTIM, ICMUB Laboratory, University of Burgundy, 21078 Dijon, France
- Department of Cardio-Vascular and Thoracic Surgery, University Hospital of Dijon, 21078 Dijon, France
| | | | - Arnaud Boucher
- IFTIM, ICMUB Laboratory, University of Burgundy, 21078 Dijon, France
| | - Benoit Presles
- IFTIM, ICMUB Laboratory, University of Burgundy, 21078 Dijon, France
| | - Olivier Bouchot
- IFTIM, ICMUB Laboratory, University of Burgundy, 21078 Dijon, France
- Department of Cardio-Vascular and Thoracic Surgery, University Hospital of Dijon, 21078 Dijon, France
| | | | - Alain Lalande
- IFTIM, ICMUB Laboratory, University of Burgundy, 21078 Dijon, France
- Department of Medical Imaging, University Hospital of Dijon, 21078 Dijon, France
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Oechtering TH, Roberts GS, Panagiotopoulos N, Wieben O, Roldán-Alzate A, Reeder SB. Abdominal applications of quantitative 4D flow MRI. Abdom Radiol (NY) 2022; 47:3229-3250. [PMID: 34837521 PMCID: PMC9135957 DOI: 10.1007/s00261-021-03352-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 01/18/2023]
Abstract
4D flow MRI is a quantitative MRI technique that allows the comprehensive assessment of time-resolved hemodynamics and vascular anatomy over a 3-dimensional imaging volume. It effectively combines several advantages of invasive and non-invasive imaging modalities like ultrasound, angiography, and computed tomography in a single MRI acquisition and provides an unprecedented characterization of velocity fields acquired non-invasively in vivo. Functional and morphological imaging of the abdominal vasculature is especially challenging due to its complex and variable anatomy with a wide range of vessel calibers and flow velocities and the need for large volumetric coverage. Despite these challenges, 4D flow MRI is a promising diagnostic and prognostic tool as many pathologies in the abdomen are associated with changes of either hemodynamics or morphology of arteries, veins, or the portal venous system. In this review article, we will discuss technical aspects of the implementation of abdominal 4D flow MRI ranging from patient preparation and acquisition protocol over post-processing and quality control to final data analysis. In recent years, the range of applications for 4D flow in the abdomen has increased profoundly. Therefore, we will review potential clinical applications and address their clinical importance, relevant quantitative and qualitative parameters, and unmet challenges.
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Affiliation(s)
- Thekla H. Oechtering
- University of Wisconsin, Department of Radiology, Madison, WI, United States,Universität zu Lübeck, Department of Radiology, Luebeck, Germany
| | - Grant S. Roberts
- University of Wisconsin, Department of Medical Physics, Madison, WI, United States
| | - Nikolaos Panagiotopoulos
- University of Wisconsin, Department of Radiology, Madison, WI, United States,Universität zu Lübeck, Department of Radiology, Luebeck, Germany
| | - Oliver Wieben
- University of Wisconsin, Department of Radiology, Madison, WI, United States,University of Wisconsin, Department of Medical Physics, Madison, WI, United States
| | - Alejandro Roldán-Alzate
- University of Wisconsin, Department of Radiology, Madison, WI, United States,University of Wisconsin, Department of Mechanical Engineering, Madison, WI, United States,University of Wisconsin, Department of Biomedical Engineering, Madison, WI, United States
| | - Scott B. Reeder
- University of Wisconsin, Department of Radiology, Madison, WI, United States,University of Wisconsin, Department of Medical Physics, Madison, WI, United States,University of Wisconsin, Department of Mechanical Engineering, Madison, WI, United States,University of Wisconsin, Department of Biomedical Engineering, Madison, WI, United States,University of Wisconsin, Department of Emergency Medicine, Madison, WI, United States
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6
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Casciaro ME, Pascaner AF, Guilenea FN, Alcibar J, Gencer U, Soulat G, Mousseaux E, Craiem D. 4D flow MRI: impact of region of interest size, angulation and spatial resolution on aortic flow assessment. Physiol Meas 2021; 42. [PMID: 33567412 DOI: 10.1088/1361-6579/abe525] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 02/10/2021] [Indexed: 12/31/2022]
Abstract
Objectives.In cardiovascular magnetic resonance, the 3D time-resolved phase-contrast technique, also known as 4D flow, is gaining increasing attention due to applications that exploit three-directional velocity encoding throughout the cardiac cycle. Blood flow volume assessment usually requires an expert to draw regions of interest (ROI) around the vessel cross section, whereas the errors involved in this estimation have not been thoroughly investigated. Our objective is to quantify the influence of ROI sizing, angulation and spatial resolution of the reconstructed plane employed in blood flow measurements using 4D flow.Approach.Three circular ROIs were drawn around the ascending, arch and descending aorta of healthy volunteers (n= 27) and patients with a dilated ascending aorta or bicuspid valve (n= 37). We applied systematic changes of ROI diameter (up to ±10%), tilt angle (up to ±25°) and spatial resolution (from 0.25 to 2 mm) of the reconstructed oblique planes, calculating the effects on net, forward and backward blood flow volumes.Main results.Patients had a larger ascending aorta than healthy volunteers with similar ages and male sex proportion (60 ± 15 y.o. vs 58 ± 16 y.o. and 84% vs 70%, respectively). Higher forward and backward flow volumes were observed in the ascending aorta and the aortic arch of the patients with respect to controls (p< 0.001), whereas net volumes were similar: 74.0 ± 20.8 ml versus 75.7 ± 21.8 ml (p= 0.37), respectively. The ascending aorta was the most sensitive to ROI modifications. Changes of ±10% in the ROI diameter and ±25° in tilt angles produced flow volume differences of up to 9 ml (10%) and 18 ml (15%) in controls and patients, respectively. Modifying the reconstructed planes spatial resolution produced flow volume changes below 2 ml.Significance.Since the setting of the ROI size and plane angle could produce errors that represent up to 20% of the forward and/or backward aortic flow volume, a good standardization for vessel segmentation and plane positioning is desirable.
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Affiliation(s)
- M E Casciaro
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET, Solís 453, CP 1078 Buenos Aires, Argentina
| | - A F Pascaner
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET, Solís 453, CP 1078 Buenos Aires, Argentina
| | - F N Guilenea
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET, Solís 453, CP 1078 Buenos Aires, Argentina
| | - J Alcibar
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET, Solís 453, CP 1078 Buenos Aires, Argentina
| | - U Gencer
- Cardiovascular Imaging Unit, Hôpital Européen Georges Pompidou, INSERM U970, Paris, France
| | - G Soulat
- Cardiovascular Imaging Unit, Hôpital Européen Georges Pompidou, INSERM U970, Paris, France
| | - E Mousseaux
- Cardiovascular Imaging Unit, Hôpital Européen Georges Pompidou, INSERM U970, Paris, France
| | - D Craiem
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMeTTyB), Universidad Favaloro-CONICET, Solís 453, CP 1078 Buenos Aires, Argentina
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7
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Pascaner AF, Houriez-Gombaud-Saintonge S, Craiem D, Gencer U, Casciaro ME, Charpentier E, Bouaou K, Cesare AD, Dietenbeck T, Chenoune Y, Kachenoura N, Mousseaux E, Soulat G, Bollache E. Comprehensive assessment of local and regional aortic stiffness in patients with tricuspid or bicuspid aortic valve aortopathy using magnetic resonance imaging. Int J Cardiol 2020; 326:206-212. [PMID: 33259874 DOI: 10.1016/j.ijcard.2020.11.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 10/27/2020] [Accepted: 11/09/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND We aimed to provide a comprehensive aortic stiffness description using magnetic resonance imaging (MRI) in patients with ascending thoracic aorta aneurysm and tricuspid (TAV-ATAA) or bicuspid (BAV) aortic valve. METHODS This case-control study included 18 TAV-ATAA and 19 BAV patients, with no aortic valve stenosis/severe regurgitation, who were 1:1 age-, gender- and central blood pressures (BP)-matched to healthy volunteers. Each underwent simultaneous aortic MRI and BP measurements. 3D anatomical MRI provided aortic diameters. Stiffness indices included: regional ascending (AA) and descending (DA) aorta pulse wave velocity (PWV) from 4D flow MRI; local AA and DA strain, distensibility and theoretical Bramwell-Hill (BH) model-based PWV, as well as regional arch PWV from 2D flow MRI. RESULTS Patient groups had significantly higher maximal AA diameter (median[interquartile range], TAV-ATAA: 47.5[42.0-51.3]mm, BAV: 45.0[41.0-47.0]mm) than their respective controls (29.1[26.8-31.8] and 28.1[26.0-32.0]mm, p < 0.0001), while BP were similar (p ≥ 0.25). Stiffness indices were significantly associated with age (ρ ≥ 0.33), mean BP (arch PWV: ρ = 0.25, p = 0.05; DA distensibility: ρ = -0.30, p = 0.02) or AA diameter (arch PWV: ρ = 0.28, p = 0.03; DA PWV: ρ = 0.32, p = 0.009). None of them, however, was significantly different between TAV-ATAA or BAV patients and their matched controls. Finally, while direct PWV measures were significantly correlated to BH-PWV estimates in controls (ρ ≥ 0.40), associations were non-significant in TAV-ATAA and BAV groups (p ≥ 0.18). CONCLUSIONS The overlap of MRI-derived aortic stiffness indices between patients with TAV or BAV aortopathy and matched controls highlights another heterogeneous feature of aortopathy, and suggests the urgent need for more sensitive indices which might help better discriminate such diseases.
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Affiliation(s)
- Ariel F Pascaner
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMETTyB), Universidad Favaloro - CONICET, Buenos Aires, Argentina
| | - Sophia Houriez-Gombaud-Saintonge
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France; ESME Sudria Research Lab, Paris, France; Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Damian Craiem
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMETTyB), Universidad Favaloro - CONICET, Buenos Aires, Argentina
| | - Umit Gencer
- Département de Radiologie Cardiovasculaire, Hôpital Européen Georges Pompidou - INSERM U970, PARCC, Paris, France
| | - Mariano E Casciaro
- Instituto de Medicina Traslacional, Trasplante y Bioingeniería (IMETTyB), Universidad Favaloro - CONICET, Buenos Aires, Argentina
| | - Etienne Charpentier
- Département de Radiologie Cardiovasculaire, Hôpital Européen Georges Pompidou - INSERM U970, PARCC, Paris, France
| | - Kevin Bouaou
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France; Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Alain De Cesare
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France; Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Thomas Dietenbeck
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France; Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | | | - Nadjia Kachenoura
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France; Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Elie Mousseaux
- Département de Radiologie Cardiovasculaire, Hôpital Européen Georges Pompidou - INSERM U970, PARCC, Paris, France
| | - Gilles Soulat
- Département de Radiologie Cardiovasculaire, Hôpital Européen Georges Pompidou - INSERM U970, PARCC, Paris, France
| | - Emilie Bollache
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France; Institute of Cardiometabolism and Nutrition (ICAN), Paris, France.
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