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https://www.readbyqxmd.com/read/28922191/acr-spr-str-practice-parameter-for-the-performance-of-cardiac-positron-emission-tomography-computed-tomography-pet-ct-imaging
#1
Rathan M Subramaniam, Warren R Janowitz, Geoffrey B Johnson, Martin A Lodge, Marguerite T Parisi, Mark R Ferguson, Jeffrey C Hellinger, Gregory W Gladish, Narainder K Gupta
This clinical practice parameter has been developed collaboratively by the American College of Radiology (ACR), the Society for Pediatric Radiology (SPR), and the Society of Thoracic Radiology (STR). This document is intended to act as a guide for physicians performing and interpreting positron emission tomography-computed tomography (PET/CT) of cardiac diseases in adults and children. The primary value of cardiac PET/CT imaging include evaluation of perfusion, function, viability, inflammation, anatomy, and risk stratification for cardiac-related events such as myocardial infarction and death...
September 15, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28916173/a-new-anatomical-view-on-the-vector-cardiogram-the-mean-temporal-spatial-isochrones
#2
Peter M van Dam
AIM: This proof of principle study aims to show the direct relationship between cardiac anatomy and the mean cardiac activation path as captured by the 12 lead ECG derived mean temporal-spatial isochrones (mean TSI) path. METHODS: To obtain the mean TSI signal a vector cardiographic (VCG) signal is constructed from the 12 lead ECG. The construction of the VCG signal uses a model of the heart and torso with patient specific electrode extracted from a 3D photo. The propagation of the activation through the heart is captured by estimating the mean of a cardiac activation isochrone using this VCG signal...
August 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28914744/cardiac-computed-tomography-before-and-after-cardiac-surgery
#3
Fernanda Erthal, Joao R Inacio, Samir Hazra, Vincent Chan, Benjamin J W Chow
Cardiac computed tomography angiography (CCTA) is a noninvasive imaging technique that has been rapidly adopted into clinical practice. Over the past decade, technological advances have improved CCTA accuracy, and there is an increasing amount of data supporting its prognostic value in the assessment of coronary artery disease. Recently, "appropriate use criteria" has been used as a tool to minimize inappropriate testing and reduce patient exposure to unnecessary risk and inconclusive studies. This review will summarize the appropriate uses of CCTA in patients before and after cardiac surgery...
September 13, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28902643/prevalence-and-characteristics-of-coronary-artery-anomalies-in-children-with-congenital-heart-disease-diagnosed-with-coronary-angiography
#4
Münevver Tuğba Temel, Mehmet Enes Coşkun, Osman Başpınar, Abdullah Tuncay Demiryürek
OBJECTIVE: Aim of the present study was to determine the prevalence of coronary artery anomalies in children with congenital heart disease. METHODS: Data of 1138 consecutive patients who were referred for cardiac catheterization and angiography for assessment of coronary anomaly between January 2005 and December 2009 were retrospectively analyzed. Total of 515 patients whose coronary arteries could be examined through left ventricle and aortic root injection were included in the study...
September 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28901573/validation-of-a-novel-cartoseg%C3%A2-segmentation-module-software-for-contrast-enhanced-computed-tomography-guided-radiofrequency-ablation-in-patients-with-atrial-fibrillation
#5
EDITORIAL
Hasan Imanli, Shaun Bhatty, Jean Jeudy, Yousra Ghzally, Kiddy Ume, Rama Vunnam, Refael Itah, Mati Amit, John Duell, Vincent See, Stephen Shorofsky, Timm M Dickfeld
INTRODUCTION: Visualization of left atrial (LA) anatomy using image integration modules has been associated with decreased radiation exposure and improved procedural outcome when used for guidance of pulmonary vein isolation (PVI) in atrial fibrillation (AF) ablation. We evaluated the CARTOSEG™ CT Segmentation Module (Biosense Webster, Inc.) that offers a new CT-specific semi-automatic reconstruction of the atrial endocardium. METHODS: The CARTOSEG™ CT Segmentation Module software was assessed prospectively in 80 patients undergoing AF ablation...
September 13, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28895301/early-leaflet-thrombosis-complicating-transcatheter-implantation-of-a-sapien-3-valve-in-a-native-right-ventricular-outflow-tract
#6
Mounir Riahi, Philipp Blanke, John Webb, Ronald G Carere
A 59-year-old female with Tetralogy of Fallot had a previous complete repair with RVOT patch enlargement. She developed subsequent severe symptomatic (NYHA III) pulmonary regurgitation with severe RV dilatation. She had a concomitant interstitial lung disease secondary to hypersensitivity pneumonitis that precluded her from cardiac surgery. After preprocedural assessment using computed tomography, echocardiography and invasive angiography we decided to implant a 29 mm Edwards Sapien 3 valve without pre-stenting...
September 12, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28889824/differences-in-clinical-outcomes-and-cost-between-complex-and-simple-arterial-switches
#7
Eric R Griffiths, Nelangi M Pinto, Aaron W Eckhauser, Ragheed Al-Dulaimi, Angela P Presson, David K Bailly, Phillip T Burch
BACKGROUND: This study evaluates the morbidity, mortality, and cost differences between patients who underwent either a simple or a complex arterial switch operation. METHODS: A retrospective study of patients undergoing an arterial switch operation at a single institution was performed. Simple cases were defined as patients with d-transposition of the great arteries with usual coronary anatomy or circumflex artery originating from the right with either intact ventricular septum or ventricular septal defect...
September 11, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28887857/development-of-a-patient-specific-atrial-phantom-model-for-planning-and-training-of-inter-atrial-interventions
#8
Pedro Morais, João Manuel R S Tavares, Sandro Queirós, Fernando Veloso, Jan D'hooge, João L Vilaça
BACKGROUND: Several authors have presented cardiac phantoms to mimic the particularities of the heart, making it suitable for medical training and surgical planning. Although the initial models were mainly focused on the ventricles, personalized phantoms of the atria were recently presented. However, such models are typically rigid, the atrial wall is not realistic and they are not compatible with ultrasound, being sub-optimal for planning/training of several interventions. METHODS: In this work, we propose a strategy to construct a patient-specific atrial model...
September 8, 2017: Medical Physics
https://www.readbyqxmd.com/read/28887263/changes-in-geometry-and-cardiac-deformation-of-the-thoracic-aorta-after-thoracic-endovascular-aortic-repair-tevar
#9
Kelsey Hirotsu, Ga-Young Suh, Jason T Lee, Michael D Dake, Dominik Fleischmann, Christopher P Cheng
BACKGROUND: TEVAR has dramatically expanded treatment options for patients with thoracic aortic pathology. The interaction between endografts and the dynamic anatomy of the thoracic aorta is not well characterized for repetitive physiologic stressors and subsequent issues related to long-term durability. Through 3D modeling we sought to quantify cardiac-induced aortic deformation before and after TEVAR to assess the impact of endografts on dynamic aortic anatomy. METHODS: Eight patients with acute (n = 4) or chronic (n = 3) Type B dissections, or chronic arch aneurysm (n = 1), underwent TEVAR with a single (n = 5) or multiple (n = 3) Gore C-TAG(s)...
September 5, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28886841/identification-and-quantification-of-patent-foramen-ovale-mediated-shunts-echocardiography-and-transcranial-doppler
#10
REVIEW
Ahmed N Mahmoud, Islam Y Elgendy, Nayan Agarwal, Jonathan M Tobis, Mohammad Khalid Mojadidi
Once deemed benign, patent foramen ovale (PFO)-mediated right-to-left shunting has now been linked to stroke, migraine, and hypoxemia. Contrast transesophageal echocardiography is considered the standard technique for identifying a PFO, allowing visualization of the atrial septal anatomy and differentiation from non-PFO right-to-left shunts. Transthoracic echocardiography is the most common method for PFO imaging, being cost-effective, but has the lowest sensitivity. Transcranial Doppler is highly sensitive but is unable to differentiate cardiac from pulmonary shunts; it is the best method to quantitate shunt severity, being more sensitive than transthoracic or transesophageal echocardiography so is our preferred screening method for PFO...
October 2017: Interventional cardiology clinics
https://www.readbyqxmd.com/read/28881023/double-outlet-left-ventricle-with-a-bicuspid-pulmonary-valve-and-aortic-coarctation
#11
Feifei Sun, Miao Fan, Liping Huang, Weidong Ren, Dongyu Li
A double-outlet left ventricle (DOLV) is a rare congenital cardiac malformation. Here, we describe a case of DOLV with bicuspid pulmonary valve, aortic coarctation, and a subpulmonary ventricular septal defect in which both ventricles were well developed. The anatomic features were observed with echocardiography, and the diagnosis was confirmed at surgery. Many variations of DOLV have been described. The features of our case expand the spectrum of this entity and may provide new insight into its complex anatomy...
September 7, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28880392/pedal-peptide-orcokinin-type-neuropeptide-signaling-in-a-deuterostome-the-anatomy-and-pharmacology-of-starfish-myorelaxant-peptide-in-asterias-rubens
#12
Ming Lin, Michaela Egertová, Cleidiane G Zampronio, Alexandra M Jones, Maurice R Elphick
Pedal peptide (PP) and orcokinin (OK) are related neuropeptides that were discovered in protostomian invertebrates (mollusks, arthropods). However, analysis of genome/transcriptome sequence data has revealed that PP/OK-type neuropeptides also occur in a deuterostomian phylum-the echinoderms. Furthermore, a PP/OK-type neuropeptide (starfish myorelaxant peptide, SMP) was recently identified as a muscle relaxant in the starfish Patiria pectinifera. Here mass spectrometry was used to identify five neuropeptides (ArPPLN1a-e) derived from the SMP precursor (PP-like neuropeptide precursor 1; ArPPLNP1) in the starfish Asterias rubens...
August 28, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28879411/serial-changes-in-anatomy-and-ventricular-function-on-dual-source-cardiac-computed-tomography-after-the-norwood-procedure-for-hypoplastic-left-heart-syndrome
#13
Hyun Woo Goo
BACKGROUND: Accurate evaluation of anatomy and ventricular function after the Norwood procedure in hypoplastic left heart syndrome is important for treatment planning and prognostication, but echocardiography and cardiac MRI have limitations. OBJECTIVE: To assess serial changes in anatomy and ventricular function on dual-source cardiac CT after the Norwood procedure for hypoplastic left heart syndrome. MATERIALS AND METHODS: In 14 consecutive patients with hypoplastic left heart syndrome, end-systolic and end-diastolic phase cardiac dual-source CT was performed before and early (average: 1 month) after the Norwood procedure, and repeated late (median: 4...
September 6, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28878577/echocardiographic-classification-and-surgical-approaches-to-double-outlet-right-ventricle-for-great-arteries-arising-almost-exclusively-from-the-right-ventricle
#14
Kun-Jing Pang, Hong Meng, Sheng-Shou Hu, Hao Wang, David Hsi, Zhong-Dong Hua, Xiang-Bin Pan, Shou-Jun Li
Selecting an appropriate surgical approach for double-outlet right ventricle (DORV), a complex congenital cardiac malformation with many anatomic variations, is difficult. Therefore, we determined the feasibility of using an echocardiographic classification system, which describes the anatomic variations in more precise terms than the current system does, to determine whether it could help direct surgical plans. Our system includes 8 DORV subtypes, categorized according to 3 factors: the relative positions of the great arteries (normal or abnormal), the relationship between the great arteries and the ventricular septal defect (committed or noncommitted), and the presence or absence of right ventricular outflow tract obstruction (RVOTO)...
August 2017: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28877948/appropriateness-of-percutaneous-coronary-interventions-in-patients-with-ischaemic-heart-disease-in-italy-the-apache-pilot-study
#15
Sergio Leonardi, Marcello Marino, Gabriele Crimi, Florinda Maiorana, Diego Rizzotti, Corrado Lettieri, Luca Bettari, Marco Zuccari, Paolo Sganzerla, Simone Tresoldi, Marianna Adamo, Sergio Ghiringhelli, Carlo Sponzilli, Giampaolo Pasquetto, Andrea Pavei, Luigi Pedon, Luciano Bassan, Mario Bollati, Paola Camisasca, Daniela Trabattoni, Marta Brancati, Arnaldo Poli, Claudio Panciroli, Maddalena Lettino, Giuseppe Tarelli, Giuseppe Tarantini, Leonardo De Luca, Ferdinando Varbella, Giuseppe Musumeci, Stefano De Servi
OBJECTIVES: To first explore in Italy appropriateness of indication, adherence to guideline recommendations and mode of selection for coronary revascularisation. DESIGN: Retrospective, pilot study. SETTING: 22 percutaneous coronary intervention (PCI)-performing hospitals (20 patients per site), 13 (59%) with on-site cardiac surgery. PARTICIPANTS: 440 patients who received PCI for stable coronary artery disease (CAD) or non-ST elevation acute coronary syndrome were independently selected in a 4:1 ratio with half diabetics...
September 5, 2017: BMJ Open
https://www.readbyqxmd.com/read/28877098/a-3-dimensional-printed-ultrasound-probe-visuospatial-trainer
#16
Ryan T McKenna, Jesse C Dove, Robert A Ratzlaff, Jose L Diaz-Gomez, Daniel J Cox, Leslie V Simon
Training adult learners to use ultrasound in clinical practice relies on the ability of the learner to apply visuospatial concepts to the anatomy of the human body. We describe a visuospatial trainer that replicates the housing of an ultrasound transducer, through which a linear laser projects light in the same plane and orientation as the ultrasonic sound waves. We use this trainer in combination with a porcine heart dissection laboratory to teach bedside cardiac ultrasound and transthoracic echocardiography (TTE)...
September 4, 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/28871043/mmi-0100-inhibits-cardiac-fibrosis-in-a-mouse-model-overexpressing-cardiac-myosin-binding-protein-c
#17
Qinghang Meng, Bidur Bhandary, Hanna Osinska, Jeanne James, Na Xu, Kritton Shay-Winkler, James Gulick, Monte S Willis, Cynthia Lander, Jeffrey Robbins
BACKGROUND: Cardiac stress can trigger production of a 40-kDa peptide fragment derived from the amino terminus of the cardiac myosin-binding protein C. Cardiac stress, as well as cMyBP-C mutations, can trigger production of 1 such truncated protein fragment, a 40-kDa peptide fragment derived from the amino terminus of cMyBP-C. Genetic expression of this 40-kDa fragment in mouse cardiomyocytes (cMyBP-C(40k)) leads to cardiac disease, fibrosis, and death within the first year. Fibrosis can occur in many cardiovascular diseases, and mitogen-activated protein kinase--activated protein kinase-2 signaling has been implicated in a variety of fibrotic processes...
September 4, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28870377/cardiac-imaging-in-the-diagnosis-of-coronary-artery-disease
#18
Ashvarya Mangla, Estefania Oliveros, Kim Allan Williams, Dinesh K Kalra
Coronary artery disease (CAD) continues to be a leading cause of morbidity and mortality worldwide. Although invasive coronary angiography has previously been the gold standard in establishing the diagnosis of CAD, there is a growing shift to more appropriately use the cardiac catheterization laboratory to perform interventional procedures once a diagnosis of CAD has been established by noninvasive imaging modalities rather than using it primarily as a diagnostic facility to confirm or refute CAD. With ongoing technological advancements, noninvasive imaging plays a pre-eminent role in not only diagnosing CAD but also informing the choice of appropriate therapies, establishing prognosis, all while containing costs and providing value-based care...
October 2017: Current Problems in Cardiology
https://www.readbyqxmd.com/read/28860895/a-review-of-the-use-of-cardiac-computed-tomography-for-evaluating-the-mitral-valve-before-and-after-mitral-valve-repair
#19
Jong Hun Kim, Eun Young Kim, Gong Yong Jin, Jong Bum Choi
The role of cardiac computed tomography (CT) for evaluating the mitral valve (MV) has been limited since echocardiography is the main method of evaluation. However, recent advances in cardiac CT have enable detailed evaluation of the anatomy and geometry of the MV. We describe assessments of the anatomy and coaptation geometric parameters of normal MVs, and also review repair of diseased/damaged MV. We also discuss pre- and post-surgical imaging of MV pathology using cardiac CT and various CT images. We found that cardiac CT could be used as an alternative imaging modality to echocardiography for pre-operative MV evaluation and to predict clinical outcomes following repair...
September 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28833651/major-cardiac-defects-and-placental-dysfunction-at-11-13-weeks-gestation
#20
Ilaria Fantasia, Dila Kasapoglu, Taner Kasapoglu, Argyro Syngelaki, Ranjit Akolekar, Kypros H Nicolaides
OBJECTIVES: To investigate the relationship between fetal major cardiac defects and markers of placental perfusion and function. METHODS: This was a prospective screening study in singleton pregnancies at 11-13 weeks' gestation. Uterine artery pulsatility index (UTPI), serum pregnancy associated plasma protein-A (PAPP-A) and placental growth factor (PLGF) were measured and the values were converted into multiples of the normal median (MoM). Median MoM values in fetuses with isolated major cardiac defects were compared to those in fetuses without major defects...
August 18, 2017: Ultrasound in Obstetrics & Gynecology
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