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Broncano J, Hanneman K, Ghoshhajra B, Rajiah PS. Cardiac Computed Tomography of Native Cardiac Valves. Radiol Clin North Am 2024; 62:399-417. [PMID: 38553177 DOI: 10.1016/j.rcl.2023.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
Valvular heart disease (VHD) is a significant clinical problem associated with high morbidity and mortality. Although not being the primary imaging modality in VHD, cardiac computed tomography (CCT) provides relevant information about its morphology, function, severity grading, and adverse cardiac remodeling assessment. Aortic valve calcification quantification is necessary for grading severity in cases of low-flow/low-gradient aortic stenosis. Moreover, CCT details significant information necessary for adequate percutaneous treatment planning. CCT may help to detail the etiology of VHD as well as to depict other less frequent causes of valvular disease, such as infective endocarditis, valvular neoplasms, or other cardiac pseudomasses.
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Affiliation(s)
- Jordi Broncano
- Cardiothoracic Imaging Unit, Radiology Department, Hospital San Juan de Dios, HT Medica, Avenida El Brillante Nº 36, Córdoba 14012, Spain.
| | - Kate Hanneman
- Department of Medical Imaging, Toronto General Hospital, Peter Munk Cardiac Center, University Health Network (UHN), University of Toronto, 1 PMB-298, 585 University Avenue, Toronto, Ontario M5G2N2, Canada
| | - Brian Ghoshhajra
- Cardiovascular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charles River Plaza East, 165 Cambridge Street, Boston, MA 02114, USA
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Hell MM, Emrich T, Lurz P, von Bardeleben RS, Schmermund A. Cardiac CT Beyond Coronaries: Focus on Structural Heart Disease. Curr Heart Fail Rep 2023; 20:484-492. [PMID: 38019324 PMCID: PMC10746749 DOI: 10.1007/s11897-023-00635-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/06/2023] [Indexed: 11/30/2023]
Abstract
PURPOSE OF REVIEW Cardiac computed tomography (CT) is an established non-invasive imaging tool for the assessment of coronary artery disease. Furthermore, it plays a key role in the preinterventional work-up of patients presenting with structural heart disease. RECENT FINDINGS CT is the gold standard for preprocedural annular assessment, device sizing, risk determination of annular injury, coronary occlusion or left ventricular outflow tract obstruction, calcification visualization and quantification of the target structure, and prediction of a co-planar fluoroscopic angulation for transcatheter interventions in patients with structural heart disease. It is further a key imaging modality in postprocedural assessment for prosthesis thrombosis, degeneration, or endocarditis. CT plays an integral part in the imaging work-up of novel transcatheter therapies for structural heart disease and postprocedural assessment for prosthesis thrombosis or endocarditis. This review provides a comprehensive overview of the key role of CT in the context of structural heart interventions.
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Affiliation(s)
- Michaela M Hell
- Department of Cardiology, University Medical Center Mainz, Johannes Gutenberg University, Mainz, Germany.
| | - Tilman Emrich
- Department of Diagnostic and Interventional Radiology, University Medical Center Mainz, Johannes Gutenberg-University, Mainz, Germany
| | - Philipp Lurz
- Department of Cardiology, University Medical Center Mainz, Johannes Gutenberg University, Mainz, Germany
| | | | - Axel Schmermund
- Cardioangiologisches Centrum Bethanien, Frankfurt am Main, Germany
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Haramati A, Latib A, Lazarus MS. Post-procedural structural heart CT imaging: TAVR, TMVR, and other interventions. Clin Imaging 2023; 101:86-95. [PMID: 37311399 DOI: 10.1016/j.clinimag.2023.05.012] [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: 03/20/2023] [Revised: 05/16/2023] [Accepted: 05/25/2023] [Indexed: 06/15/2023]
Abstract
Transcatheter valve replacement has experienced substantial growth in the past decade and this technique can now be used for any of the four heart valves. Transcatheter aortic valve replacement (TAVR) has overtaken surgical aortic valve replacement. Transcatheter mitral valve replacement (TMVR) is often performed in pre-existing valves or after prior valve repair, although numerous devices are undergoing trials for replacement of native valves. Transcatheter tricuspid valve replacement (TTVR) is similarly under active development. Lastly, transcatheter pulmonic valve replacement (TPVR) is most often used for revision treatment of congenital heart disease. Given the growth of these techniques, radiologists are increasingly called upon to interpret post-procedural imaging for these patients, particularly with CT. These cases will often arise unexpectedly and require detailed knowledge of potential post-procedural appearances. We review both normal and abnormal post-procedural findings on CT. Certain complications-device migration or embolization, paravalvular leak, or leaflet thrombosis-can occur after replacement of any valve. Other complications are specific to each type of valve, including coronary artery occlusion after TAVR, coronary artery compression after TPVR, or left ventricular outflow tract obstruction after TMVR. Finally, we review access-related complications, which are of particular concern due to the requirement of large-bore catheters for these procedures.
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Affiliation(s)
- Adina Haramati
- Department of Radiology, New York-Presbyterian/Weill Cornell Medicine, 525 East 68(th) Street, New York, NY 10065, United States of America
| | - Azeem Latib
- Division of Cardiology, Montefiore Medical Center, Albert Einstein College of Medicine, 111 East 210(th) Street, Bronx, NY 10467, United States of America
| | - Matthew S Lazarus
- Department of Radiology, Montefiore Medical Center, Albert Einstein College of Medicine, 111 East 210(th) Street, Bronx, NY 10467, United States of America.
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Birudaraju D, Cherukuri L, Pranesh S, Budoff MJ. Current methods to assess mitral annular calcification and its risk factors. Expert Rev Cardiovasc Ther 2021; 19:787-800. [PMID: 34348555 DOI: 10.1080/14779072.2021.1964361] [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] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Mitral annulus calcification (MAC) is a chronic, non-inflammatory, degenerative mechanism of the fibrous base of the mitral valve. While MAC was originally thought to be an age-related degenerative process, there is evidence that other mechanisms, such as atherosclerosis and abnormal calcium phosphorus metabolism, also contribute to the development of MAC. AREAS COVERED This paper summarizes, existing perception of clinically valid definition of MAC and the pathophysiological processes that lead to the development of MAC and the diagnostic implications of this disease entity. EXPERT OPINION Minimal evidence exists on the natural history and progression of MAC. Characterization of MAC progression and identification of predisposing risk factors can help to validate hypotheses. MAC is most commonly asymptomatic and incidental finding. Echocardiography is the primary imaging modality for identification and characterization of MAC and associated mitral valve (MV) disease. For patients with an indication for MV surgery, computed tomography (CT) is a complementary imaging modality for MAC. MAC is generally recognized by its characteristic density, location, and shape on echocardiography and CT, unusual variants are sometimes confused with other lesions.
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Affiliation(s)
- Divya Birudaraju
- Division Of Cardiology, Lundquist Institute For Biomedical Innovation At Harbor-UCLA, Torrance, California, USA
| | - Lavanya Cherukuri
- Division Of Cardiology, Lundquist Institute For Biomedical Innovation At Harbor-UCLA, Torrance, California, USA
| | - Shruthi Pranesh
- Division Of Cardiology, Penn State Holy Spirit Hospital, Harrisburg, Pennsylvania, USA
| | - Matthew J Budoff
- Division Of Cardiology, Lundquist Institute For Biomedical Innovation At Harbor-UCLA, Torrance, California, USA
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Ranganath P, Moore A, Guerrero M, Collins J, Foley T, Williamson E, Rajiah P. CT for Pre- and Postprocedural Evaluation of Transcatheter Mitral Valve Replacement. Radiographics 2021; 40:1528-1553. [PMID: 33001784 DOI: 10.1148/rg.2020200027] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Transcatheter mitral valve replacement (TMVR) is a catheter-based interventional technique for treating mitral valve disease in patients who are at high risk for open mitral valve surgery and with unfavorable anatomy for minimally invasive edge-to-edge transcatheter mitral valve repair. There are several TMVR devices with different anchoring mechanisms, delivered by either transapical or transseptal approaches. Transthoracic echocardiography is the first-line imaging modality used for characterization and quantification of mitral valve disorders. CT is complementary to echocardiography and has several advantages, including high isotropic spatial resolution, good temporal resolution, large field of view, multiplanar reconstruction capabilities, and rapid turnaround time. CT is essential for multiple aspects of preprocedural planning. Accurate and reproducible techniques to prescribe the mitral annulus at CT have been described from which important measurements such as the area, perimeter, trigone-trigone distance, intercommissural distance, and septolateral distance are obtained. The neo-left ventricular outflow tract (LVOT) can be simulated by placing a virtual prosthesis in the CT data to predict the risk of TMVR-induced LVOT obstruction. The anatomy of the landing zone and subvalvular apparatus as well as the relationship of the virtual device to adjacent structures such as the coronary sinus and left circumflex coronary artery can be evaluated. CT also stimulates procedural fluoroscopic angles. CT can be used to evaluate the chest wall for transapical access and the atrial septum for transseptal access. Follow-up CT is useful in identifying complications such as LVOT obstruction, paravalvular leak, pseudoaneurysm, and valve embolization. Online supplemental material is available for this article. ©RSNA, 2020.
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Affiliation(s)
- Praveen Ranganath
- From the Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (P. Ranganath); Department of Radiology, Baylor University Medical Center, Dallas, Tex (A.M.); and Department of Cardiology (M.G.) and Department of Radiology (J.C., T.F., E.W., P. Rajiah), Mayo Clinic, 200 1st St SW, Rochester, MN 55905
| | - Alastair Moore
- From the Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (P. Ranganath); Department of Radiology, Baylor University Medical Center, Dallas, Tex (A.M.); and Department of Cardiology (M.G.) and Department of Radiology (J.C., T.F., E.W., P. Rajiah), Mayo Clinic, 200 1st St SW, Rochester, MN 55905
| | - Mayra Guerrero
- From the Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (P. Ranganath); Department of Radiology, Baylor University Medical Center, Dallas, Tex (A.M.); and Department of Cardiology (M.G.) and Department of Radiology (J.C., T.F., E.W., P. Rajiah), Mayo Clinic, 200 1st St SW, Rochester, MN 55905
| | - Jeremy Collins
- From the Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (P. Ranganath); Department of Radiology, Baylor University Medical Center, Dallas, Tex (A.M.); and Department of Cardiology (M.G.) and Department of Radiology (J.C., T.F., E.W., P. Rajiah), Mayo Clinic, 200 1st St SW, Rochester, MN 55905
| | - Thomas Foley
- From the Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (P. Ranganath); Department of Radiology, Baylor University Medical Center, Dallas, Tex (A.M.); and Department of Cardiology (M.G.) and Department of Radiology (J.C., T.F., E.W., P. Rajiah), Mayo Clinic, 200 1st St SW, Rochester, MN 55905
| | - Eric Williamson
- From the Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (P. Ranganath); Department of Radiology, Baylor University Medical Center, Dallas, Tex (A.M.); and Department of Cardiology (M.G.) and Department of Radiology (J.C., T.F., E.W., P. Rajiah), Mayo Clinic, 200 1st St SW, Rochester, MN 55905
| | - Prabhakar Rajiah
- From the Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (P. Ranganath); Department of Radiology, Baylor University Medical Center, Dallas, Tex (A.M.); and Department of Cardiology (M.G.) and Department of Radiology (J.C., T.F., E.W., P. Rajiah), Mayo Clinic, 200 1st St SW, Rochester, MN 55905
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