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Cardiac CTA

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https://www.readbyqxmd.com/read/28817814/cardiac-computed-tomography-angiographic-findings-as-predictors-of-late-heart-failure-in-an-asymptomatic-diabetic-cohort-an-8-year-prospective-follow-up-study
#1
David A Halon, Jubran Ayman, Ronen Rubinshtein, Barak Zafrir, Mali Azencot, Basil S Lewis
OBJECTIVES: Predictive models for heart failure (HF) in heterogeneous populations have had limited success. We examined cardiac computed tomography angiography (CTA) predictors of HF or cardiovascular death (HF-CVD) in a prospective study of asymptomatic diabetics undergoing baseline assessment by CTA. METHODS: The subjects (n = 735, aged 55-74 years, 51.2% women) had no clinical history of cardiovascular disease at study entry. Coronary artery calcium (CAC) score, CTA-defined coronary atherosclerosis, cardiac chamber volumes, and clinical data were collected and late outcome events recorded over 8...
August 18, 2017: Cardiology
https://www.readbyqxmd.com/read/28811999/quantitative-analysis-of-epicardial-fat-volume-effects-of-scanning-protocol-and-reproducibility-of-measurements-in-non-contrast-cardiac-ct-vs-coronary-ct-angiography
#2
Luigia D'Errico, Francesco Salituri, Marco Ciardetti, Riccardo Favilla, Alessandro Mazzarisi, Giuseppe Coppini, Carlo Bartolozzi, Paoli Marraccini
BACKGROUND: Several studies have focused on the role of epicardial fat in the pathogenesis of cardiovascular disease (CVD). The main purpose of the study was to evaluate a computerized method for the quantitative analysis of epicardial fat volume (EFV) by non-contrast cardiac CT (NCT) for coronary calcium scan and coronary CT angiography (coronary CTA). METHODS: Thirty patients (61±12.5 years, 73% male, body mass index (BMI) =25.9±6.3 kg/m(2)) referred to our Institution for suspected coronary artery disease (CAD) underwent NCT and coronary CTA...
June 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28810087/multiple-pulmonary-arteriovenous-malformations-an-unusual-cause-of-shortness-of-breath-and-recurrent-strokes
#3
Kalyan C Potu, Shenjing Li, Shawn C Kelly, Julia A Prescott-Focht, Scott Pham
OBJECTIVE: To discuss an uncommon case of a patient with multiple pulmonary arteriovenous malformations (PAVMs) presenting with dyspnea on exertion and recurrent strokes. BACKGROUND: A 79-year-old woman with recent onset recurrent cerebrovascular accidents (CVAs) was referred to cardiology for evaluation of dyspnea on exertion. Clinical examination was unrevealing. METHODS: A transthoracic echocardiogram (TTE) with agitated saline was suggestive of an extra-cardiac shunt...
February 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28807509/-18-f-fdg-pet-ct-angiography-in-the-diagnosis-of-infective-endocarditis-and-cardiac-device-infection-in-adult-patients-with-congenital-heart-disease-and-prosthetic-material
#4
María N Pizzi, L Dos-Subirà, Albert Roque, Nuria Fernández-Hidalgo, Hug Cuéllar-Calabria, Antonia Pijuan Domènech, María T Gonzàlez-Alujas, M T Subirana-Domènech, B Miranda-Barrio, Ignacio Ferreira-González, Juan J González-López, Albert Igual, Olga Maisterra-Santos, David García-Dorado, Joan Castell-Conesa, Benito Almirante, Manuel Escobar Amores, Pilar Tornos, Santiago Aguadé-Bruix
OBJECTIVES: Infective endocarditis (IE) and cardiac device infection (CDI) are a major complication in the growing number of patients with congenital heart disease (CHD) reaching adulthood. We aimed to evaluate the added value of (18)F-FDG-PET/CT angiography (PET/CTA) in the diagnosis of IE-CDI in adults with CHD and intravascular or intracardiac prosthetic material, in whom echocardiography (ECHO) and modified Duke Criteria (DC) have limitations because of the patients' complex anatomy...
August 9, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28797740/framework-for-detection-and-localization-of-coronary-non-calcified-plaques-in-cardiac-cta-using-mean-radial-profiles
#5
Muhammad Moazzam Jawaid, Atif Riaz, Ronak Rajani, Constantino Carlos Reyes-Aldasoro, Greg Slabaugh
BACKGROUND AND OBJECTIVE: The high mortality rate associated with coronary heart disease (CHD) has driven intensive research in cardiac imaging and image analysis. The advent of computed tomography angiography (CTA) has turned non-invasive diagnosis of cardiovascular anomalies into reality as calcified coronary plaques can be easily identified due to their high intensity values. However, the detection of non-calcified plaques in CTA is still a challenging problem because of lower intensity values, which are often similar to the nearby blood and muscle tissues...
August 1, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28781240/outcomes-in-patients-with-contained-ruptures-of-the-aortic-annulus-after-transcatheter-aortic-valve-implantation-with-balloon-expandable-devices
#6
Philipp Breitbart, Jan Minners, Gregor Pache, Jochen Reinöhl, Nicolaj Christopher Hansson, Bjarne L Nørgaard, Franz-Josef Neumann, Philipp Ruile
AIMS: To evaluate incidence and long-term outcomes of patients with contained ruptures of the aortic annulus (CR) after transcatheter aortic valve implantation (TAVI). METHODS AND RESULTS: From May 2012 to June 2017 a total of 1030 patients underwent post- TAVI computed tomography angiography (CTA) at three centers in Germany and Denmark. CR were identified in 12 patients (1.2%, 80.7+5.0 years, STS-Score 4.1+1.4%). All 12 patients had received a balloon-expandable valve...
August 8, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28754436/sex-differences-in-coronary-atherosclerosis-progression-and-major-adverse-cardiac-events-in-patients-with-suspected-coronary-artery-disease
#7
Hui Gu, Yang Gao, Haiping Wang, Zhihui Hou, Lei Han, Ximing Wang, Bin Lu
BACKGROUND: Little is known about the influence of coronary atherosclerosis progression on the risk of major adverse cardiac events (MACE). Similarly, differences between men and women regarding atherosclerosis progression are poorly understood. The purpose of this study was to investigate the progression of coronary atherosclerosis by coronary CT angiography (coronary CTA) in men and women, and to evaluate its prognostic value regarding MACE. METHODS: This study included 1046 patients with suspected coronary artery disease (CAD) who underwent serial coronary CTA because of new or worsening symptoms or because follow-up coronary CTA had been recommended by attending physicians...
July 16, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28747938/computed-tomography-angiography-for-imaging-results-of-neochordal-mitral-valve-repair
#8
Radosław Zwoliński, Anna Marcinkiewicz, Konrad Szymczyk, Jarosław Drożdż, Ryszard Jaszewski, Bogdan Jegier
INTRODUCTION: Degenerative mitral regurgitation is currently the most frequent indication for mitral valve repair. AIM: To visualize and assess the mid-term results of mitral valve repair with neochordae implantation, using computed tomography angiography (CTA) imaging. MATERIAL AND METHODS: The CTA with ECG gating and without modulation was applied in 10 patients to assess the results of a mitral valve sparing procedure. The results of 3 patients are presented...
June 2017: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28725938/declining-radiation-dose-of-coronary-computed-tomography-angiography-german-cardiac-ct-registry-experience-2009-2014
#9
Axel Schmermund, Mohamed Marwan, Jörg Hausleiter, Sebastian Barth, Oliver Bruder, Sebastian Kerber, Grigorius Korosoglou, Alexander Leber, Werner Moshage, Stephen Schröder, Steffen Schneider, Jochen Senges, Stephan Achenbach
BACKGROUND: Coronary computed tomography angiography (CTA) is increasingly used as a test to rule out coronary artery disease (CAD) in patients with a low to intermediate pre-test probability of the disease. We used the database of the German CT registry, collected between 2009 and 2014 in a broad patient population, to analyze contemporary radiation dose associated with coronary CTA in clinical practice. PATIENTS AND METHODS: The prospective observational registry included a total of 7061 patients ≥18 years, referred to 12 participating centers for a clinically indicated cardiac CT examination...
July 19, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28662717/nonenhanced-mr-angiography-of-the-pulmonary-arteries-using-single-shot-radial-quiescent-interval-slice-selective-qiss-a-technical-feasibility-study
#10
Robert R Edelman, Robert I Silvers, Kiran H Thakrar, Mark D Metzl, Jose Nazari, Shivraman Giri, Ioannis Koktzoglou
BACKGROUND: For evaluation of the pulmonary arteries in patients suspected of pulmonary embolism, CT angiography (CTA) is the first-line imaging test with contrast-enhanced MR angiography (CEMRA) a potential alternative. Disadvantages of CTA include exposure to ionizing radiation and an iodinated contrast agent, while CEMRA is sensitive to respiratory motion and requires a gadolinium-based contrast agent. The primary goal of our technical feasibility study was to evaluate pulmonary arterial conspicuity using breath-hold and free-breathing implementations of a recently-developed nonenhanced approach, single-shot radial quiescent-interval slice-selective (QISS) MRA...
June 30, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28654385/3d-fusion-framework-for-infarction-and-angiogenesis-analysis-in-a-myocardial-infarct-minipig-model
#11
Xu Zhenzhen, Bo Tao, Yu Li, Jun Zhang, Xiaochao Qu, Feng Cao, Jimin Liang
The combination of different modality images can provide detailed and comprehensive information for the prognostic assessment and therapeutic strategy of patients with ischemic heart disease. In this study, a 3D fusion framework is designed to integrate coronary computed tomography (CT) angiography (CTA), 2-deoxy-2-[(18)F]fluoro-D-glucose ([(18)F]DG) positron emission tomography (PET)/CT, and [(68)Ga]-1,4,7-triazacyclononane-1,4,7-triacetic acid-(Arg-Gly-Asp)2 ([(68)Ga]-NOTA-PRGD2) PET/CT images of the myocardial infarction model in minipigs...
January 1, 2017: Molecular Imaging
https://www.readbyqxmd.com/read/28648482/comparison-of-intravascular-ultrasound-and-centerline-computed-tomography-determined-aortic-diameters-during-thoracic-endovascular-aortic-repair
#12
Sukgu M Han, Ramsey S Elsayed, Sung W Ham, Anuj Mahajan, Fernando Fleischman, Vincent L Rowe, Mark J Cunningham, Fred A Weaver
BACKGROUND: Accurate sizing of stent grafts during thoracic endovascular aortic repair (TEVAR) is critical for a successful outcome. Centerline measurements using three-dimensional reconstruction of preoperative computed tomography angiography (CTA) is the current standard for stent graft sizing. However, this technique is predicated on an idealized straightened aorta and does not account for the variability in the aortic diameter during the cardiac cycle or the overall status of the patient's volume...
June 22, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28575302/impact-of-computed-tomography-myocardial-perfusion-following-computed-tomography-coronary-angiography-on-downstream-referral-for-invasive-coronary-angiography-revascularization-and-outcome-at-12-months
#13
Alexander R van Rosendael, Aukelien C Dimitriu-Leen, Michiel A de Graaf, Erik W van Zwet, J Wouter Jukema, Jeroen J Bax, Lucia J Kroft, Arthur J Scholte
Aims: The aim of this study was to assess the impact of adding stress computed tomography (CT) myocardial perfusion (CTP) to coronary CT angiography (CTA) on downstream referral for invasive coronary angiography (ICA), revascularization, and outcome in patients presenting with new-onset chest pain. Methods and results: Three hundred and eighty-four patients were referred for cardiac CT. Patients with lesions ≥50% stenosis underwent subsequently stress CTP. Perfusion scans were considered abnormal if a defect was observed in ≥ 1 segment...
May 29, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28560509/evaluation-of-coronary-artery-disease-and-coronary-anomalies-with-a-handheld-smartphone
#14
Cheng Ting Lin, Stefan Loy Zimmerman, Linda C Chu, John Eng, Elliot K Fishman
The purpose of this study was to determine the diagnostic accuracy of an iPhone for evaluation of the coronary arteries on coronary CT angiography (CTA) in comparison to a standard clinical workstation. Fifty coronary CTA exams were selected to include a range of normal and abnormal cases including both coronary artery disease (CAD) of varying severity and coronary artery anomalies. Two cardiac radiologists reviewed each exam on a standard clinical workstation initially and then on an iPhone 6 after a washout period...
May 30, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28557332/impact-of-contrast-exposure-from-computed-tomography-angiography-on-acute-kidney-injury-after-neonatal-cardiopulmonary-bypass-surgery
#15
Waldemar F Carlo, Steven T Clark, Santiago Borasino, Jeffrey A Alten
OBJECTIVE: Acute kidney injury (AKI) is a frequent complication after cardiopulmonary bypass (CBP) for cardiac surgery in neonates. It is unclear if exposure to computed tomography angiography (CTA) in the preoperative period increases the risk of AKI. We hypothesized a short interval between CTA and CPB surgery would be associated with higher rates of AKI in infants. DESIGN: In this single center retrospective review of patients between 2012 and 2015, neonates less than one month old were analyzed if they had CTA prior to cardiac surgery with CPB...
May 30, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28549023/technical-feasibility-of-a-combined-noncontrast-magnetic-resonance-protocol-for-preoperative-transcatheter-aortic-valve-replacement-evaluation
#16
Paola M Cannaò, Giuseppe Muscogiuri, U Joseph Schoepf, Carlo N De Cecco, Pal Suranyi, Virginia W Lesslie, Davide Piccini, Shivraman Giri, Akos Varga-Szemes
PURPOSE: The aim of this study was to prospectively evaluate the technical feasibility of a noncontrast magnetic resonance angiography (MRA) protocol using investigational prototype self-navigated 3D (SN3D) radial whole-heart and quiescent-interval single-shot (QISS) pulse sequences regarding their potential in planning transcatheter aortic valve replacement (TAVR). MATERIALS AND METHODS: Five patients (76±7 y) with severe aortic valve stenosis and prior computed tomographic angiography (CTA) for TAVR planning and 10 healthy volunteers (28±6 y) underwent noncontrast MRA on a 1...
May 25, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28540210/integration-of-non-invasive-functional-assessments-with-anatomical-risk-stratification-in-complex-coronary-artery-disease-the-non-invasive-functional-syntax-score
#17
REVIEW
Carlos Collet, Yoshinobu Onuma, Yosuke Miyazaki, Marie-Angèle Morel, Patrick W Serruys
Since the early days of coronary angiography, the extension and severity of coronary artery disease (CAD) have been used for risk stratification. The SYNTAX score objectively characterizes CAD in patients with multivessel disease. Furthermore, recalculating the SYNTAX score by the incorporation of the functional component coronary stenosis (i.e., FFR) increases the discrimination for the risk of adverse events. The calculation of the SYNTAX score derived from non-invasive modalities such as coronary computed tomography angiography (CTA) has emerged as a mean to obtain the SYNTAX score before invasive cardiac catheterization...
April 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28540072/standard-imaging-techniques-in-transcatheter-aortic-valve-replacement
#18
REVIEW
Arash Salemi, Berhane M Worku
Transcatheter aortic valve replacement (TAVR) has become a widely accepted therapeutic option for patients with severe, symptomatic aortic stenosis at intermediate, high, or extreme risk for conventional surgery as determined through a heart team approach. Two valve prostheses are currently available and the Food and Drug Administration (FDA) approved in the United States for TAVR: the self-expandable Medtronic CoreValve (Medtronic, Inc., Minneapolis, MN, USA) and the balloon-expandable Edwards Sapien Valve (Edwards Lifesciences, Irvine CA, USA)...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28532693/a-prospective-national-survey-of-coronary-ct-angiography-radiation-doses-in-the-united-kingdom
#19
Isabel A Castellano, Edward D Nicol, Russell K Bull, Carl A Roobottom, Michelle C Williams, Stephen P Harden
BACKGROUND: Little real-world radiation dose data exist for the majority of cardiovascular CT. Some data have been published for coronary CT angiography (coronary CTA) specifically, but they invariably arise from high-volume centres with access to the most recent technology. OBJECTIVE: The aim of this study was to document real-world radiation doses for coronary CTA in the United Kingdom, and to establish their relationship to clinical protocol selection, acquisition heart rate, and scanner technology...
July 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28511327/-determination-of-iodine-content-in-the-left-ventricular-myocardium-of-healthy-subjects-using-dual-source-dual-energy-ct-myocardial-first-perfusion-imaging-a-preliminary-study
#20
Z X Chen, G Wang, L Liang, X R Lu, Q H Guo, Y N Zhai, X N Shi
Objective: To analyze the normal value of the iodine content in the left ventricular myocardium of healthy subjects and to observe if there is a segmental differences on iodine distribution by using the second generation dual-source dual-energy computed tomography myocardial first perfusion imaging. Methods: In this retrospective study, 42 healthy subjects, who admitted to our department between January to June 2016, with normal second generation dual-source dual-energy computed tomography and coronary CT angioghphy (CTA), electrocardiogram (ECG) results, normal cardiac, hepatic, renal function, normal myocardial enzymes results were enrolled, data from 38 out of 42 subjects with satisfactory image quality were analyzed using Siemens Dual Energy-Heart PBV image processing software...
May 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
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