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Cardiac magnetic resonance imaging congenital

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https://www.readbyqxmd.com/read/28212053/transthoracic-echocardiography-pitfalls-and-limitations-as-delineated-at-cardiac-ct-and-mr-imaging
#1
Sachin B Malik, Natalie Chen, Rex A Parker, Joe Y Hsu
Transthoracic echocardiography ( TTE transthoracic echocardiography ) is a critical tool in the field of clinical cardiology. It often serves as one of the first-line imaging modalities in the evaluation of cardiac disease owing to its low cost, portability, widespread availability, lack of ionizing radiation, and ability to evaluate both anatomy and function of the heart. Consequently, a large majority of patients undergoing a cardiac computed tomography (CT) or magnetic resonance (MR) imaging examination will have a TTE transthoracic echocardiography available for review...
February 17, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28185817/outcomes-following-melody-transcatheter-pulmonary-valve-implantation-for-right-ventricular-outflow-tract-dysfunction-in-repaired-congenital-heart-disease-first-reported-australian-single-centre-experience
#2
Ryan Markham, Abhinay Challa, Stephen Kyranis, Mugur Nicolae, Dale Murdoch, Michael Savage, Theresa Malpas, Dorothy J Radford, Christian Hamilton-Craig, Darren L Walters
BACKGROUND: Transcatheter pulmonary valve implantation (TPVI) with the Melody® transcatheter pulmonary valve (TPV) has demonstrated good haemodynamic and clinical outcomes in the treatment of right ventricular outflow tract (RVOT) conduit dysfunction in patients with repaired congenital heart disease CHD. We present the first Australian single centre experience of patients treated with Melody TPV. METHOD: A prospective, observational registry was developed to monitor clinical and haemodynamic outcomes in patients with RVOT dysfunction treated with the Melody TPV (Medtronic Inc, Minneapolis, United States)...
January 24, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28185475/4d-flow-magnetic-resonance-imaging-role-in-pediatric-congenital-heart-disease
#3
Claire M Lawley, Kathryn M Broadhouse, Fraser M Callaghan, David S Winlaw, Gemma A Figtree, Stuart M Grieve
Imaging-based evaluation of cardiac structure and function remains paramount in the diagnosis and monitoring of congenital heart disease in childhood. Accurate measurements of intra- and extracardiac hemodynamics are required to inform decision making, allowing planned timing of interventions prior to deterioration of cardiac function. Four-dimensional flow magnetic resonance imaging is a nonionizing noninvasive technology that allows accurate and reproducible delineation of blood flow at any anatomical location within the imaging volume of interest, and also permits derivation of physiological parameters such as kinetic energy and wall shear stress...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28148318/utility-of-4d-flow-mapping-in-eisenmenger-syndrome-with-pulmonary-atresia
#4
Soha Romeih, Heba Aguib, Magdi Yacoub
Management of patients with Eisenmenger syndrome with pulmonary atresia is challenging because of the complexity of the structure-function relationship of the components of the syndrome. Multi-modality imaging including cardiac magnetic resonance (CMR) 4D Flow offers unprecedented opportunities to unravel, at least in part, some of these components, and thus help in the management of these patients. In this study, we describe the use of these integrated methods with particular reference to CMR 4D Flow in a patient with Eisenmenger syndrome and pulmonary atresia and outline both the utility and the limitations...
December 2016: Cardiology in the Young
https://www.readbyqxmd.com/read/28144782/update-on-the-role-of-cardiac-magnetic-resonance-imaging-in-congenital-heart-disease
#5
REVIEW
Prabhakar Rajiah, Animesh Tandon, Gerald F Greil, Suhny Abbara
Cardiac magnetic resonance imaging (CMR) is an important imaging modality in the evaluation of congenital heart diseases (CHD). CMR has several strengths including good spatial and temporal resolutions, wide field-of-view, and multi-planar imaging capabilities. CMR provides significant advantages for imaging in CHD through its ability to measure function, flow and vessel sizes, create three-dimensional reconstructions, and perform tissue characterization, all in a single imaging study. Thus, CMR is the most comprehensive imaging modality available today for the evaluation of CHD...
January 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28103933/quantification-of-myocardial-deformation-in-children-by-cardiovascular-magnetic-resonance-feature-tracking-determination-of-reference-values-for-left-ventricular-strain-and-strain-rate
#6
Florian André, Daniëlle Robbers-Visser, Astrid Helling-Bakki, Angela Föll, Andreas Voss, Hugo A Katus, Willem A Helbing, Sebastian J Buss, Joachim G Eichhorn
BACKGROUND: The objective assessment of global and regional cardiac function in children has shown to be clinically relevant but is challenging to conduct. Cardiovascular magnetic resonance (CMR) has emerged as a valuable diagnostic modality especially in patients with cardiomyopathy or congenital heart disease. However, data on the normal cardiac deformation in children assessed by CMR is lacking at present. Thus, the aim of this study was to provide reference values for cardiac strain and strain rate in children and adolescents derived from CMR feature tracking (FT) measurements...
December 5, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28100978/inflammation-and-rupture-of-a-congenital-pericardial-cyst-manifesting-itself-as-an-acute-chest-pain-syndrome
#7
Robert A Aertker, Benjamin Y C Cheong, Roberto Lufschanowski
We present the case of a 63-year-old woman with a remote history of supraventricular tachycardia and hyperlipidemia, who presented with recurrent episodes of acute-onset chest pain. An electrocardiogram showed no evidence of acute coronary syndrome. A chest radiograph revealed a prominent right-sided heart border. A suspected congenital pericardial cyst was identified on a computed tomographic chest scan, and stranding was noted around the cyst. The patient was treated with nonsteroidal anti-inflammatory drugs, and the pain initially abated...
December 2016: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28097523/intravascular-ultrasound-characterization-of-a-tissue-engineered-vascular-graft-in-an-ovine-model
#8
Victoria K Pepper, Elizabeth S Clark, Cameron A Best, Ekene A Onwuka, Tadahisa Sugiura, Eric D Heuer, Lilamarie E Moko, Shinka Miyamoto, Hideki Miyachi, Darren P Berman, Sharon L Cheatham, Joanne L Chisolm, Toshiharu Shinoka, Christopher K Breuer, John P Cheatham
Patients who undergo implantation of a tissue-engineered vascular graft (TEVG) for congenital cardiac anomalies are monitored with echocardiography, followed by magnetic resonance imaging or angiography when indicated. While these methods provide data regarding the lumen, minimal information regarding neotissue formation is obtained. Intravascular ultrasound (IVUS) has previously been used in a variety of conditions to evaluate the vessel wall. The purpose of this study was to evaluate the utility of IVUS for evaluation of TEVGs in our ovine model...
January 17, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28049537/imperforated-cor-triatriatum-dexter-in-a-dog-with-concurrent-caudal-vena-cava-wall-mineralization
#9
Tetyda Paulina Dobak, Gregory Starrak, Kathleen Linn, Elisabeth Christine Roberston Snead
BACKGROUND: Cor triatriatum dexter (CTD) is a rare congenital cardiac malformation with various manifestations and has been sporadically described in dogs. Clinically the dogs present with nonspecific signs of right heart failure or Budd-Chiari-like syndrome. Other associated concurrent cardiovascular anomalies are commonly reported. Diagnosis and full characterization of this complex malformation requires careful investigation and often a multimodal imaging approach. CASE PRESENTATION: A 10-week-old, male intact, Golden Retriever was presented with clinical signs of stunted growth, anorexia, and progressive ascites...
January 3, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28043462/right-ventricular-outflow-tract-reconstruction-with-a-polytetrafluoroethylene-monocusp-valve-a-20-year-experience
#10
Mohineesh Kumar, Mark W Turrentine, Mark D Rodefeld, Teresa Bell, John W Brown
In patients with tetralogy of Fallot (TOF), pulmonary atresia (PA), and other congenital right ventricular outflow tract (RVOT) malformations, polytetrafluoroethylene (PTFE) monocusp outflow tract patches (MOTP) relieve obstruction and provide pulmonary valve competence. The purpose of this study was to determine whether our PTFE-MOTP was an acceptable short- and mid-term remedy for patients with TOF or PA as assessed by freedom from severe pulmonary regurgitation and freedom from reoperation. From 1994-2014, 171 patients (mean age 1...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28035425/myocardial-stress-perfusion-magnetic-resonance-initial-experience-in-a-pediatric-and-young-adult-population-using-regadenoson
#11
Cory V Noel, Ramkumar Krishnamurthy, Brady Moffett, Rajesh Krishnamurthy
BACKGROUND: Dipyridamole and adenosine are traditional pharmacological stressors for myocardial perfusion. Regadenoson, a selective adenosine A2A agonist, has a lower side effect profile with lower incidence of bronchospasm and bradycardia. There is a growing need for myocardial perfusion assessment within pediatrics. There is no report on the utility of regadenoson as a stress agent in children. OBJECTIVE: To observe the safety and feasibility of regadenoson as a pharmacologic stressor for perfusion cardiac MR in a pilot cohort of pediatric patients weighing more than 40 kg who have congenital heart disease and pediatric acquired heart disease...
December 29, 2016: Pediatric Radiology
https://www.readbyqxmd.com/read/28011844/the-visible-heart%C3%A2-project-and-free-access-website-atlas-of-human-cardiac-anatomy
#12
Paul A Iaizzo
AIMS: Pre- and post-evaluations of implantable cardiac devices require innovative and critical testing in all phases of the design process. The Visible Heart(®) Project was successfully launched in 1997 and 3 years later the Atlas of Human Cardiac Anatomy website was online. The Visible Heart(®) methodologies and Atlas website can be used to better understand human cardiac anatomy, disease states and/or to improve cardiac device design throughout the development process. METHODS AND RESULTS: To date, Visible(®) Heart methodologies have been used to reanimate 75 human hearts, all considered non-viable for transplantation...
December 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28009949/a-patient-with-quadricuspid-aortic-valve-and-ischemic-stroke
#13
Maximillian Krisper, Clemens Köhncke, Felicitas Escher, Daniel A Morris, Carsten Tschöpe, Burkert Pieske
Quadricuspid aortic valve (QAV) is a rare congenital cardiac defect. Aortic regurgitation is the predominant hemodynamically relevant abnormality in patients with QAV, and the main reason for patients requiring valve surgery. Calcific valve disease of the left heart valves is classified as 'low embolic risk' according to current guidelines. However, it remains an important risk factor of cardiovascular events, including ischemic stroke. A 71-year-old woman presented with new-onset aphasia and hemiparesis of the right side of her body...
July 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27914791/aberrant-developmental-titin-splicing-and-dysregulated-sarcomere-length-in-thymosin-%C3%AE-4-knockout-mice
#14
Nicola Smart, Johannes Riegler, Cameron W Turtle, Craig A Lygate, Debra J McAndrew, Katja Gehmlich, Karina N Dubé, Anthony N Price, Vivek Muthurangu, Andrew M Taylor, Mark F Lythgoe, Charles Redwood, Paul R Riley
Sarcomere assembly is a highly orchestrated and dynamic process which adapts, during perinatal development, to accommodate growth of the heart. Sarcomeric components, including titin, undergo an isoform transition to adjust ventricular filling. Many sarcomeric genes have been implicated in congenital cardiomyopathies, such that understanding developmental sarcomere transitions will inform the aetiology and treatment. We sought to determine whether Thymosin β4 (Tβ4), a peptide that regulates the availability of actin monomers for polymerization in non-muscle cells, plays a role in sarcomere assembly during cardiac morphogenesis and influences adult cardiac function...
November 30, 2016: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/27899867/a-very-rare-case-of-co-existence-of-cor-triatriatum-sinister-and-left-pulmonary-vein-atresia
#15
Mustafa Aparci, Murat Yalcin, Zafer Isilak, Mehmet Dogan, Ejder Kardesoglu
Cor triatriatum sinister (CTS) is a rare congenital abnormality. Clinical presentation of patients with CTS mainly depends on the anatomic features of membrane and may vary from mild or moderate symptoms mimicking mitral stenosis to more severe and complicated cardioembolic stroke or a new onset heart failure. We herein have reported on a young male who presented with the signs and symptoms of mitral stenosis and was diagnosed as CTS with gradient on the orifice of the membrane after transthrocacic echocardiography...
November 2016: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/27878504/intra-and-inter-reader-reproducibility-of-blood-flow-measurements-on-the-ascending-aorta-and-pulmonary-artery-using-cardiac-magnetic-resonance
#16
Giovanni Di Leo, Ida Daniela D'Angelo, Marco Alì, Paola Maria Cannaò, Giovanni Mauri, Francesco Secchi, Francesco Sardanelli
The aim of our study was to estimate the intra- and inter-reader reproducibility of blood flow measurements in the ascending aorta and main pulmonary artery using cardiac magnetic resonance (CMR) and a semi-automated segmentation method. The ethics committee approved this retrospective study. A total of 50 consecutive patients (35 males and 15 females; mean age±standard deviation 27±13 years) affected by congenital heart disease were reviewed. They underwent CMR for flow analysis of the ascending aorta and main pulmonary artery (1...
March 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/27876398/dropped-head-congenital-muscular-dystrophy-caused-by-de-novo-mutations-in-lmna
#17
Pakize Karaoglu, Nicolas Quizon, Matthias Pergande, Haicui Wang, Ayşe Ipek Polat, Ayca Ersen, Erdener Özer, Lena Willkomm, Semra Hiz Kurul, Raúl Heredia, Uluç Yis, Duygu Selcen, Sebahattin Çirak
BACKGROUND: Dropped head syndrome is an easily recognizable clinical presentation of Lamin A/C-related congenital muscular dystrophy. Patients usually present in the first year of life with profound neck muscle weakness, dropped head, and elevated serum creatine kinase. CASE DESCRIPTION: Two patients exhibited head drop during infancy although they were able to sit independently. Later they developed progressive axial and limb-girdle weakness. Creatine kinase levels were elevated and muscle biopsies of both patients showed severe dystrophic changes...
November 19, 2016: Brain & Development
https://www.readbyqxmd.com/read/27875570/towards-a-tissue-engineered-contractile-fontan-conduit-the-fate-of-cardiac-myocytes-in-the-subpulmonary-circulation
#18
Daniel Biermann, Alexandra Eder, Florian Arndt, Hatim Seoudy, Hermann Reichenspurner, Thomas Mir, Arlindo Riso, Rainer Kozlik-Feldmann, Kersten Peldschus, Michael G Kaul, Tillman Schuler, Susanne Krasemann, Arne Hansen, Thomas Eschenhagen, Jörg S Sachweh
The long-term outcome of patients with single ventricles improved over time, but remains poor compared to other congenital heart lesions with biventricular circulation. Main cause for this unfavourable outcome is the unphysiological hemodynamic of the Fontan circulation, such as subnormal systemic cardiac output and increased systemic-venous pressure. To overcome this limitation, we are developing the concept of a contractile extracardiac Fontan-tunnel. In this study, we evaluated the survival and structural development of a tissue-engineered conduit under in vivo conditions...
2016: PloS One
https://www.readbyqxmd.com/read/27866381/cardiac-magnetic-resonance-imaging-of-patent-ductus-arteriosus-in-three-dogs
#19
Youngjae Lee, Jaihyun Jung, Junyong Park, Jiyoon Jeong, Seokho Jeon, Sunyoung Park, Jinhwa Chang, Ji-Houn Kang, Chulhyun Lee, Dongwoo Chang
Patent ductus arteriosus (PDA) is the most common congenital cardiovascular disorder in dogs and requires an accurate diagnosis for an appropriate treatment. Cardiac MRI (cMRI) has been reported as a method for characterization of canine thoracic vasculature. However, to the authors' knowledge, no published studies describe evaluation of canine PDA through cMRI. Three dogs were selected for this exploratory study. Electrocardiogram gating and breath-hold techniques were performed using a 3T MR scanner. Both black blood imaging and bright blood cine acquisitions were performed...
January 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27863744/towards-the-improved-quantification-of-in-vivo-abnormal-wall-shear-stresses-in-bav-affected-patients-from-4d-flow-imaging-benchmarking-and-application-to-real-data
#20
F Piatti, S Pirola, M Bissell, I Nesteruk, F Sturla, A Della Corte, A Redaelli, E Votta
Bicuspid aortic valve (BAV), i.e. the fusion of two aortic valve cusps, is the most frequent congenital cardiac malformation. Its progression is often characterized by accelerated leaflet calcification and aortic wall dilation. These processes are likely enhanced by altered biomechanical stimuli, including fluid-dynamic wall shear stresses (WSS) acting on both the aortic wall and the aortic valve. Several studies have proposed the exploitation of 4D-flow magnetic resonance imaging sequences to characterize abnormal in vivo WSS in BAV-affected patients, to support prognosis and timing of intervention...
January 4, 2017: Journal of Biomechanics
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