title: Translational paradigms in scientific and clinical imaging of cardiac development.
abstract: Congenital heart defects (CHD) are the most prevalent congenital disease, with 45% of deaths resulting from a congenital defect due to a cardiac malformation. Clinically significant CHD permit survival upon birth, but may become immediately life threatening. Advances in surgical intervention have significantly reduced perinatal mortality, but the outcome for many malformations is bleak. Furthermore, patients living while tolerating a CHD often acquire additional complications due to the long-term systemic blood flow changes caused by even subtle anatomical abnormalities. Accurate diagnosis of defects during fetal development is critical for interventional planning and improving patient outcomes. Advances in quantitative, multidimensional imaging are necessary to uncover the basic scientific and clinically relevant morphogenetic changes and associated hemodynamic consequences influencing normal and abnormal heart development. Ultrasound is the most widely used clinical imaging technology for assessing fetal cardiac development. Ultrasound-based fetal assessment modalities include motion mode (M-mode), two dimensional (2D), and 3D/4D imaging. These datasets can be combined with computational fluid dynamics analysis to yield quantitative, volumetric, and physiological data. Additional imaging modalities, however, are available to study basic mechanisms of cardiogenesis, including optical coherence tomography, microcomputed tomography, and magnetic resonance imaging. Each imaging technology has its advantages and disadvantages regarding resolution, depth of penetration, soft tissue contrast considerations, and cost. In this review, we analyze the current clinical and scientific imaging technologies, research studies utilizing them, and appropriate animal models reflecting clinically relevant cardiogenesis and cardiac malformations. We conclude with discussing the translational impact and future opportunities for cardiovascular development imaging research.
authors.affiliation: Department of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA.
authors.forename: Chelsea L
authors.initials: CL
authors.lastname: Gregg
authors.forename: Jonathan T
authors.initials: JT
authors.lastname: Butcher
mesh_terms: D000818:Animals; D003952:Diagnostic Imaging / Q000379:methods; D004195:Disease Models, Animal; D005315:Fetal Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000401:mortality; D006321:Heart / Q000000981:diagnostic imaging* / Q000196:embryology*; D006330:Heart Defects, Congenital / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000401:mortality; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods; D011859:Radiography; D014463:Ultrasonography
keywords: MRI; OCT; cardiac development; congenital heart defect; imaging; micro-CT; ultrasound
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