4D flow vs. 2D cardiac MRI for the evaluation of pulmonary regurgitation and ventricular volume in repaired tetralogy of Fallot: a retrospective case control study
AbstractLengthy exams and breath-holding limit the use of pediatric cardiac MRI (CMR). 3D time-resolved flow MRI (4DF) is a free-breathing, single-sequence exam that obtains magnitude (anatomic) and phase contrast (PC) data. We compare the accuracy of gadobenate dimeglumine-enhanced 4DF on a 1.5  T magnet to 2D CMR in children with repaired tetralogy of Fallot (rTOF) to measure pulmonary net flow (PNF) as a reflection of pulmonary regurgitation, forward flow (FF) and ventricular volumetry. Thirty-four consecutive cases were included. 2D PCs were obtained at the valve level. Using 4DF, we m easured PNF at the valve and...
Source: The International Journal of Cardiovascular Imaging - December 31, 2019 Category: Radiology Source Type: research

Right ventricular free wall strain predicts functional capacity in patients with repaired Tetralogy of Fallot
AbstractTo investigate the role of right ventricular free wall strain (RVFWSL) to predict low functional capacity in repaired tetralogy of Fallot (rTOF). We prospectively enrolled 33 patients with rTOF with moderate to severe PR who underwent rest and peak exercise echocardiography on a semisupine cycloergometer. Conventional function and strain imaging parameters of both ventricles were measured. Patients performing  
Source: The International Journal of Cardiovascular Imaging - December 31, 2019 Category: Radiology Source Type: research

Diffuse myocardial fibrosis and the prognosis of heart failure with reduced ejection fraction in Chinese patients: a cohort study
AbstractEvidence regarding the relationship between diffuse myocardial fibrosis and the prognosis of heart failure with reduced ejection fraction (HFrEF) was limited. Therefore, this study set out to investigate whether diffuse myocardial fibrosis was independently related to the prognosis of failure with reduced ejection fraction in Chinese patients after adjusting for other covariates. The present study was a cohort study. A total of 45 consecutive HFrEF patients were involved in Zhongshan Hospital of Fudan University in China from 1/9/2015 to 31/12/2016. The target-independent variable was extracellular volume (ECV) qua...
Source: The International Journal of Cardiovascular Imaging - December 31, 2019 Category: Radiology Source Type: research

Measurement errors in serial echocardiographic assessments of aortic valve stenosis severity
AbstractTransthoracic echocardiography (TTE) evaluation of aortic stenosis (AS) is routinely performed using the continuity equation. Inaccurate measurements of the left ventricular (LV) outflow tract (LVOT) diameter are considered the most common source of error in AS grading. We hypothesized that inconsistency in LVOT velocity time integral (VTI) is an under-recognized cause of AS assessment error. We sought to determine which parameters contribute most towards inconsistencies in AS grading by studying the prevalence of different errors in a historic cohort. We identified patients with mild to severe AS with multiple stu...
Source: The International Journal of Cardiovascular Imaging - December 20, 2019 Category: Radiology Source Type: research

Papillary fibroelastoma entangled with tendinous chords: gap between echocardiographic and operative findings
AbstractThis papillary fibroelastoma case showed the imaging gap between echocardiography and operative findings. Use of 4K endoscopy enabled us to visualize the details of the tumor and to excise it safely. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - December 19, 2019 Category: Radiology Source Type: research

Global myocardial longitudinal strain in a general population —associations with blood pressure and subclinical heart failure: The Tromsø Study
AbstractThe early detection of subclinical myocardial dysfunction can contribute to the treatment and prevention of heart failure (HF). The aim of the study was to (i) describe myocardial global longitudinal strain (GLS) patterns in a large general population sample from Norway and their relation to established cardiovascular disease (CVD) risk factors; (ii) to determine its normal thresholds in healthy individuals and (iii) ascertain the relation of myocardial GLS to stage A subclinical heart failure (SAHF). Participants (n  = 1855) of the 7th survey of the population-based Tromsø Study of Norway (201...
Source: The International Journal of Cardiovascular Imaging - December 17, 2019 Category: Radiology Source Type: research

Coronary artery disease risk reclassification using an acoustic-based score in view of the new European Society of Cardiology 2019 guidelines on Chronic Coronary Syndromes
AbstractIn August 2019, ESC published new guidelines on Chronic Coronary Syndromes including a new risk assessment paradigm for estimation of pre-test-probability. The CAD-score is an acoustic-based score for ruling-out of coronary artery disease (CAD). In the current letter to the editor we re-evaluate the re-classification potential the CAD-score in the view of the new guidelines. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - December 17, 2019 Category: Radiology Source Type: research

Apical variant hypertrophic cardiomyopathy “multimodality imaging evaluation”
AbstractApical variant hypertrophic cardiomyopathy (AHCM) is characterized by asymmetric hypertrophy of the left ventricular (LV) apex. T wave inversions of variable degree, particularly in the left precordial leads, and left ventricular hypertrophy (LVH) are common EKG findings in AHCM. Echocardiography is typically the initial imaging modality used in the diagnosis and evaluation of AHCM. The diagnosis is made when the LV apex has apical wall thickness of ≥ 15 mm or a ratio of apical to basal LV wall thickness of ≥ 1.3 at end-diastole. The use of microbubble contrast agents with echocardiography is helpful for...
Source: The International Journal of Cardiovascular Imaging - December 17, 2019 Category: Radiology Source Type: research

The value of three-dimensional echocardiography in risk stratification in pulmonary arterial hypertension: a cross-sectional study
AbstractTo explore the value of right ventricular (RV) parameters detected by three-dimensional echocardiography (3DE) in risk stratification in pulmonary arterial hypertension (PAH) patients. We prospectively recruited 130 pulmonary hypertension patients from National Center for Cardiovascular Diseases, Fuwai Hospital. Each participant was performed a transthoracic echocardiography and 3DE parameters were measured using an off-line software (4D RV Function 2.0, TomTec). Patients were classified into low, intermediate-high risk group based on 2015 ESC Guidelines. A total of 91 PAH patients (34  ± 12&nb...
Source: The International Journal of Cardiovascular Imaging - December 17, 2019 Category: Radiology Source Type: research

Stroke volume and cardiac output measurement in cardiac patients during a rehabilitation program: comparison between tonometry, impedancemetry and echocardiography
AbstractGiven the increasing use of noninvasive techniques for the assessment of cardiac function in clinical practice, the aim of this study was to evaluate if stroke volume (SV) and cardiac output (CO) measurements obtained by PhysioFlow impedance cardiography or HDI CR-2000 pulse wave analysis (Pulse) are interchangeable with measurements obtained by echocardiography in patients with coronary artery disease (CAD) or heart failure (HF). The study involved 48 men with heart disease (CAD or HF). We compared SV and CO measurements with the three devices at rest, as well as relative changes in SV and CO derived from a rehabi...
Source: The International Journal of Cardiovascular Imaging - December 15, 2019 Category: Radiology Source Type: research

An unusual cause of ventricular tachycardia in a 50  years old man
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - December 15, 2019 Category: Radiology Source Type: research

Clinical and echocardiographic features of paradoxical low-flow and normal-flow severe aortic stenosis patients with concomitant mitral regurgitation
AbstractMitral regurgitation (MR) coexists in a significant proportion of patients with severe aortic stenosis (AS), and portends inferior therapeutic outcomes. In severe AS, MR is thought to contribute to a low-flow state by decreasing forward stroke volume. We investigated concomitant MR on the clinical and echocardiographic features of patients with “paradoxical” low-flow (PLF) and normal-flow (NF) severe AS. Clinical and echocardiographic profiles of 886 consecutive patients with index echocardiographic diagnosis of severe AS (AVA 
Source: The International Journal of Cardiovascular Imaging - November 26, 2019 Category: Radiology Source Type: research

Concominant hypertrophic and takotsubo cardiomyopathy; cardiac magnetic resonance with parametric mapping findings after acute phase
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 22, 2019 Category: Radiology Source Type: research

Verification of threshold for image intensity ratio analyses of late gadolinium enhancement magnetic resonance imaging of left atrial fibrosis in 1.5T scans
AbstractThe use of cardiovascular magnetic resonance imaging left atrial late gadolinium enhancement (LA LGE) is increasing for fibrosis evaluation though the use is still limited to specialized centres due to complex image acquisition and lack of consensus on image analyses. Analysis of LA LGE with image intensity ratio (IIR) (pixel intensity of atrial wall normalized by blood pool intensity) provides an objective method to obtain quantitative data on atrial fibrosis. A threshold between healthy myocardium and fibrosis of 1.2 has previously been established in 3T scans. The aim of the study was to reaffirm this threshold ...
Source: The International Journal of Cardiovascular Imaging - November 19, 2019 Category: Radiology Source Type: research

Comparison of quantitative flow ratio and fractional flow reserve with myocardial perfusion scintigraphy and cardiovascular magnetic resonance as reference standard. A Dan-NICAD substudy
This study is a predefined post hoc analysis of the Dan-NICAD study (NCT02264717). Patients with suspected coronary artery disease by coronary computed tomography angiography (CCTA) were randomized 1:1 to MPS or CMR and were referred to invasive coronary angiography with FFR and predefined QFR assessment. Paired data with FFR, QFR and MPS or CMR were available for 232 vessels with stenosis in 176 patients. Perfusion defects were detected in 57 vessel territories (25%). For QFR and FFR the diagnostic accuracy was 61% and 57% (p  = 0.18) and area under the receiver operating curve was 0.64 vs. 0.58 (p =&...
Source: The International Journal of Cardiovascular Imaging - November 18, 2019 Category: Radiology Source Type: research

Assessment of the healing process after percutaneous implantation of a cardiovascular device: a systematic review
AbstractThe healing process, occurring after intra-cardiac and intra-vascular device implantation, starts with fibrin condensation and attraction of inflammatory cells, followed by the formation of fibrous tissue that slowly covers the device. The duration of this process is variable and may be incomplete, which can lead to thrombus formation, dislodgement of the device or stenosis. To better understand this process and the neotissue formation, animal models were developed: small (rats and rabbits) and large (sheep, pigs, dogs and baboons) animal models for intra-vascular device implantation; sheep and pigs for intra-cardi...
Source: The International Journal of Cardiovascular Imaging - November 18, 2019 Category: Radiology Source Type: research

Echocardiographic assessment of residuals after transvenous intracardiac lead extraction
AbstractDetection of residual fibrotic tissue, called ghosts, after lead extraction is a new phenomenon in cardiology. This paper aims at describing the phenomenon of ghosts and determining their characteristic features. The study group consisted of 580 consecutive patients who underwent transvenous lead extraction (TLE) due to local infection, endocarditis and a superfluous lead. Each patient was clinically examined with the application of transthoracic echocardiography and transesophageal echocardiography directly before and after TLE. In the study population ghosts were detected in 110 patients (19%), and in 470 cases (...
Source: The International Journal of Cardiovascular Imaging - November 15, 2019 Category: Radiology Source Type: research

DANTE-SPACE: a new technical tool for DVT on 1.5T MRI
AbstractThe aim of the study was to compare CE-MRV with DANTE-SPACE on a 1.5T MRI system for the diagnosis of DVT. The patients were diagnosed with deep venous thrombosis of the lower extremities based on swelling, pain, and superficial varicose veins of the lower extremities. MRI examination confirmed the diagnosis. DANTE-SPACE images were obtained before the conventional contrast-enhanced MRV, which uses gadolinium. The scanning field started from the end of the inferior vena cava to the end of the ankle, divided into five observation segments, namely, the common iliac vein, external iliac vein, femoral vein, popliteal v...
Source: The International Journal of Cardiovascular Imaging - November 14, 2019 Category: Radiology Source Type: research

Impact of baseline calibration on semiquantitative assessment of myocardial perfusion reserve by adenosine stress MRI
In this study, we sought  to investigate the impact of baseline calibration, which is used in quantitative cardiac MRI perfusion analysis to correct for surface coil inhomogeneity and noise, on myocardial perfusion reserve index (MPRI) and its contribution to previously reported paradoxical low MPRI 
Source: The International Journal of Cardiovascular Imaging - November 13, 2019 Category: Radiology Source Type: research

Quantification of myocardial interstitial fibrosis and extracellular volume for the detection of cardiac allograft vasculopathy
AbstractIn search of a non-invasive alternative detection of early-stage cardiac allograft vasculopathy (CAV), in this preliminary study we tested the hypothesis that interstitial fibrosis quantified with cardiac magnetic resonance (CMR) can serve as a biomarker for the detection of CAV. Late-stage CAV was detected with routine X-ray coronary angiography (XRCA), while a coronary intima-media thickness ratio (IMTR)>  1 on optical coherence tomography (OCT) was used to detect early-stage CAV. Interstitial fibrosis was quantified in the endomyocardial biopsy (EMB) and indirectly with CMR as the T1 relaxation time an...
Source: The International Journal of Cardiovascular Imaging - November 12, 2019 Category: Radiology Source Type: research

Contrast-enhanced echocardiographic measurement of longitudinal strain: accuracy and its relationship with image quality
In conclusion, contrast enhancement of TTE images improves the accuracy and reproducibility of GLS measurements, resulting in better agreement with CMR, even in pa tients with suboptimal acoustic windows. This approach may aid in the assessment of LV function in this patient population. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 12, 2019 Category: Radiology Source Type: research

Diastolic strain imaging: a new non-invasive tool to detect subclinical myocardial dysfunction in early cardiac allograft rejection
In conclusion, early global diastolic strain rate is the most sensi tive parameter to detect subclinical myocardial dysfunction during early periods of pre-1R prior to biopsy confirmed 1R-ACR. GDSRe is a potential new tool for non-invasive screening of early post-transplant cardiac allograft rejection. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 11, 2019 Category: Radiology Source Type: research

Combined use of electro-anatomic mapping system and intracardiac echocardiography to achieve zero-fluoroscopy catheter ablation for treatment of paroxysmal atrial fibrillation: a single centre experience
AbstractFluoroscopy is the principal imaging method for catheter ablation (CA) of atrial fibrillation (AF). However, radiation exposure carries potential health risk to patients and operators alike. Our aim was to study safety and efficacy of zero-fluoroscopy CA of paroxysmal AF with a combined use of electroanatomic mapping system (EAM) and intracardiac echocardiography (ICE). In addition, impact of ICE/EAM automatic integration system and contact force (CF) sensing technology on procedural times were assessed. We included 144 consecutive patients (69% males, age 60  ± 10 years, BMI 29 &pl...
Source: The International Journal of Cardiovascular Imaging - November 10, 2019 Category: Radiology Source Type: research

Impact of posteromedial papillary muscle infarction on mitral regurgitation during ST-segment elevation myocardial infarction
AbstractThe exact role of papillary muscle infarction (PMI) during the acute phase of acute ST-segment elevation myocardial infarction (STEMI) is not well understood, as existing data on the impact of PMI location is conflicting. We hypothesized that infarction of the posteromedial papillary muscle (PM-PMI) as determined by cardiac magnetic resonance imaging might be associated with an increased incidence of mitral valve regurgitation in the first week after STEMI. 242 patients with first STEMI underwent a late-enhancement (LGE-) cardiac magnetic resonance imaging within a median of 2 (IQR 2 –5) days and echocardiogr...
Source: The International Journal of Cardiovascular Imaging - November 8, 2019 Category: Radiology Source Type: research

Postsystolic shortening on echocardiography as a gateway to cardiac computed tomography in patients with suspected stable angina pectoris
AbstractPostsystolic shortening (PSS) by speckle-tracking echocardiography (STE) is a marker of myocardial ischemia and may improve diagnostic strategy. We sought to evaluate if PSS is associated with the coronary artery calcium score (CACS) and stenosis by computed tomography angiography (CTA) in patients with suspected stable angina pectoris (SAP). We retrospectively studied 437 SAP patients (age 58  ± 11 years, 41% male) who underwent STE, evaluation of CACS and assessment of significant stenosis (≥ 50%) by CTA. The postsystolic index (PSI) was defined as follows: 100x([peak negative ...
Source: The International Journal of Cardiovascular Imaging - November 7, 2019 Category: Radiology Source Type: research

Comparison of the geometry of the left ventricle outflow tract, the aortic root and the ascending aorta in patients with severe tricuspid aortic stenosis versus healthy controls
AbstractThe purpose of this study was to assess by multislice computed tomography (MSCT) imaging geometry of the ascending aorta, the aortic root, the aortic annulus and the left ventricle outflow tract (LVOT) in aortic stenosis (AS) patients, to compare aortic root morphology in patients with AS with healthy controls and to evaluate sex differences. Fifty patients with severe AS and 50 age- and gender-matched controls who underwent MSCT were included in the study. The dimensions of the LVOT, the aortic annulus, the aortic root, the ascending aorta, and the volume of the aortic root were retrospectively assessed and a comp...
Source: The International Journal of Cardiovascular Imaging - November 3, 2019 Category: Radiology Source Type: research

Pooled summary of native T1 value and extracellular volume with MOLLI variant sequences in normal subjects and patients with cardiovascular disease
AbstractT1 mapping by cardiac magnetic resonance (CMR) allows detection of abnormal myocardium. A number of myocardial abnormalities affects the signal captured in T1 mapping. We performed a systematic review and meta-analysis of native T1 and extracellular volume (ECV) in subjects with and without cardiac disease (1) to determine the normal ranges of T1 values and ECV by sequences as well as parameters influencing them, and (2) to summarize the differences in T1 values and ECV of the diseases relative to the normal ranges. Three databases (EMBASE, SCOPUS, and MEDLINE) were systematically searched for native T1 time and EC...
Source: The International Journal of Cardiovascular Imaging - November 3, 2019 Category: Radiology Source Type: research

Evaluation of computed tomography myocardial perfusion in women with angina and no obstructive coronary artery disease
AbstractWomen with angina and no obstructive coronary artery disease (CAD) have worse cardiovascular prognosis than asymptomatic women. Limitation in myocardial perfusion caused by coronary microvascular dysfunction (CMD) is one of the proposed mechanisms contributing to the adverse prognosis. The aim of this study was to assess myocardial perfusion in symptomatic women with no obstructive CAD suspected for CMD compared with asymptomatic sex-matched controls using static CT perfusion (CTP). We performed a semi-quantitative assessment of the left ventricular myocardial perfusion and myocardial perfusion reserve (MPR), using...
Source: The International Journal of Cardiovascular Imaging - October 31, 2019 Category: Radiology Source Type: research

Cut-off value of mal-apposition volume and depth for resolution at early phase of acute incomplete stent apposition after CoCr-EES implantation
AbstractThe purpose of this study was to clarify a cut-off value for acute incomplete stent apposition (ISA) volume and maximum-depth to predict ISA resolution at 1- and 3-month follow-up in patients treated with cobalt –chromium everolimus-eluting stents. In total, 95 cases and 103 stents were registered in the MECHANISM-Elective sub-study. Acute ISA-volume was measured by the trapezoid rule. ISA resolution of cut-off value at 1- and 3-month was estimated by ISA-volume and maximum-depth using receiver operatorat ing characteristic curve analysis. The total number of analysed acute ISAs was 202 in the 1-month group a...
Source: The International Journal of Cardiovascular Imaging - October 22, 2019 Category: Radiology Source Type: research

Severe obstructive sleep apnea is associated with significant coronary artery plaque burden independent of traditional cardiovascular risk factors
AbstractObstructive Sleep Apnea (OSA) is strongly associated with adverse cardiovascular events. In these patients, increased oxidative stress has been associated with accelerated coronary atherosclerosis. However, it is unclear if OSA is associated with significant coronary artery plaque burden. Our aim is to determine whether OSA and/or markers of hypoxemia are associated with coronary plaque burden (CPB). Patients who had coronary computed tomography angiography (CCTA) and a polysomnogram within 1  year of each other between 2011 and 2016 were analyzed. Apnea–Hypopnea Index (AHI) and hypoxemic burden (ODI3%, ...
Source: The International Journal of Cardiovascular Imaging - October 20, 2019 Category: Radiology Source Type: research

ESCR Abstracts
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - October 20, 2019 Category: Radiology Source Type: research

Comparison of diagnostic accuracy of dual-axis rotational versus standard coronary angiography
This study aimed to compare the diagnostic accuracy of DARCA versus standard coronary angiography (SA). 70 patients with possible CAD underwent SA following by DARCA were prospectively enrolled. The primary endpoint was the non-inferiority comparison of the two modalities regarding diagnosis of CAD. Coronary lesion assessment, quantitative coronary angiography (QCA) analysis, and screening adequacy comparisons were performed. All images were analyzed by two independent reviewers except QCA analysis that was analyzed by the third independent reviewer. Radiation dose, contrast usage and procedural time were recorded. This tr...
Source: The International Journal of Cardiovascular Imaging - October 17, 2019 Category: Radiology Source Type: research

On-site evaluation of CT-based fractional flow reserve using simple boundary conditions for computational fluid dynamics
AbstractFractional flow reserve (FFR) is an established method for diagnosing physiological coronary artery stenosis. A method for computing FFR using coronary computed tomography (CT) images was recently developed. However, its calculation requires off-site supercomputer analysis. Here, we report the preliminary result of a method using simple estimation of boundary conditions. The lumen boundaries of the coronary arteries were semi-automatically delineated using full width at half maximum of CT number profiles. The computational fluid dynamics (CFD) of the blood flow was performed using the boundary conditions of a fixed...
Source: The International Journal of Cardiovascular Imaging - October 17, 2019 Category: Radiology Source Type: research

Functional tricuspid regurgitation in rheumatic mitral valve disease patients with and without tricuspid annuloplasty: a three-dimensional echocardiography study with one year follow up
AbstractThe aim of this study is to analyze the clinical and echocardiographic determinants of functional tricuspid regurgitation (TR) before and after surgical intervention of rheumatic mitral valve disease, with focus on effectiveness of different methods of tricuspid valve annuloplasty (TAP). Three-dimensional echocardiographic images were obtained in 170 patients with mitral valve rheumatic disease before and 1  year after mitral valve replacement, with and without concomitant TAP. Together with standard cardiac chamber quantification, multiplanar reconstruction images of the tricuspid valve (TV) apparatus were an...
Source: The International Journal of Cardiovascular Imaging - October 8, 2019 Category: Radiology Source Type: research

Instantaneous wave-free ratio-guided paclitaxel-coated balloon treatment for de novo coronary lesions
AbstractPaclitaxel-coated balloon (PCB) treatment guided by fractional flow reserve (FFR) is safe and effective for de novo coronary lesions. It is unknown whether the instantaneous wave-free ratio (iFR), an alternative measure that does not require the administration of adenosine, will offer benefits similar to those of FFR in de novo lesion treatment with PCB. Baseline, post-balloon and 9-month angiographical parameters were obtained from 116 lesions of 104 patients. The cutoff value of iFR after balloon angioplasty used to define functionally nonsignificant residual stenotic lesions was 0.86 and they were subdivided int...
Source: The International Journal of Cardiovascular Imaging - October 8, 2019 Category: Radiology Source Type: research

Relationship between left atrial strain, diastolic dysfunction and subclinical atrial fibrillation in patients with cryptogenic stroke: the SURPRISE echo substudy
In conclusion, LAs associates with PAF independent of GLS and LA size, and may be used to improve the performance of DDF grading for identifying PAF in CS patients. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - October 7, 2019 Category: Radiology Source Type: research

Challenges of recognizing bicuspid aortic valve in elderly patients undergoing TAVR
AbstractRecognition of bicuspid aortic valve (BAV) may be challenging in elderly patients with heavily calcified aortic valves undergoing transcatheter aortic valve replacement (TAVR). In this subset, the diagnostic value of pre-procedural echocardiography in clinical routine is unknown. From a total of 2583 patients undergoing TAVR in our center, we determined the rate of BAV detected by routine echocardiography as documented in the medical records. Pre-procedural multidetector computed tomography (MDCT) images were retrospectively analyzed for the presence of BAV and served as reference standard. Using MDCT criteria, BAV...
Source: The International Journal of Cardiovascular Imaging - October 4, 2019 Category: Radiology Source Type: research

Usefulness of strain imaging echocardiography in arrhythmogenic right ventricular cardiomyopathy: clinical perspective
AbstractArrhythmogenic right ventricular cardiomyopathy (ARVC) is a rare, but severe disease that predisposes patients to ventricular arrhythmias, heart failure, and increased risk of sudden cardiac death. Because of the broad spectrum of phenotypic expressions, diagnostic assessment is often challenging. Speckle-tracking echocardiography has emerged as an alternative technique enhancing the performance of standard echocardiography in ARVC patients, leading to an early detection of subtle ventricular abnormalities and potentially identifying predictors of adverse clinical outcome. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - October 4, 2019 Category: Radiology Source Type: research

Left atrial function and NT-proANP as markers of AF progression and impaired outcome in patients with heart failure with preserved ejection fraction
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - October 4, 2019 Category: Radiology Source Type: research

Endothelial dysfunction, subclinical atherosclerosis and LDL cholesterol are the independent predictors of left atrial functions in hypertension
In this study, we investigated independent determinants of left atrial function in non-diabetic patients with de novo hypertension. The study included 124 consecutive non-diabetic patients with de novo hypertension. Brachial artery flow-mediated dilatation, carotid intima-media thickness, transthoracic echocardiography, 24-h rhythm holter, and aortic stiffness measurements were recorded. In echocardiography, left atrial maximum (LAMaV) and minimum (LAMiV) volumes were calculated. Left atrium total emptying fraction (LATEF) and total emptying volume (LATEV) were divided into two groups according to the mean levels. Multivar...
Source: The International Journal of Cardiovascular Imaging - October 3, 2019 Category: Radiology Source Type: research

Echocardiographic evaluation of the effects of sacubitril –valsartan on vascular properties in heart failure patients
AbstractIncreased vascular stiffness is known to be an independent predictor of mortality in patients with heart failure with reduced ejection fraction (HFrEF). The effects of sacubitril –valsartan on vascular structure and function have not been systematically studied in this patient population. We hypothesized that aortic distensibility (AD) and fractional area change (AFAC), as assessed by 2D transthoracic echocardiography (TTE), would improve over time in HFrEF patients on sac ubitril–valsartan therapy, due to the vasodilatory properties of the medication. We prospectively studied 30 patients with HFrEF (25 
Source: The International Journal of Cardiovascular Imaging - October 2, 2019 Category: Radiology Source Type: research

Interval changes in aortic peak velocity and wall shear stress in patients with bicuspid aortic valve disease
This study investigated interval changes in flow and WSS in a multi-year follow-up study. This cross-sectional study included n  = 44 patients with BAV (age = 44.9 ± 12 years), n = 17 patients with tricuspid aortic valve and thoracic aortic dilatation (TAV with dilation, age = 54.6 ± 16.5 years), and n = 9 healthy controls (age = 49.3 ± 14.7 years) underwent baseline and serial aorti c 4D flow MRI (follow-up duration: BAV: 2.6 ± 0.7 years...
Source: The International Journal of Cardiovascular Imaging - September 30, 2019 Category: Radiology Source Type: research

The value of the left atrial appendage orifice perimeter of 3D model based on 3D TEE data in the choice of device size of LAmbre ™ occluder
AbstractPreoperative optimal selection of the occluder size is crucial in percutaneous left atrial appendage (LAA) occlusion, and the maximal width of the LAA orifice is the main reference index, however it can not fully meet the practical operation requirements. We retrospectively analyzed three-dimensional (3D) transesophageal echocardiography (TEE) and computed tomography (CT) imaging dataset of the 41 patients who underwent LAA occlusion with LAmbre ™ system. The LAA orifice parameters were overall evaluated to determine their role in device size selection. Eight LAA 3D models of the four cases who had been repla...
Source: The International Journal of Cardiovascular Imaging - September 30, 2019 Category: Radiology Source Type: research

3-Dimensional regional and global strain abnormalities in hypertrophic cardiomyopathy
This study evaluated 3D principal and conventional strain characteristics of non-enhanced myocardium in patients with HCM. 3D principal and conventional strain analysis was conducted in 51 HCM patients and 38 healthy controls. Principal strain was reduced within the non-enhanced myocardium of HCM as compared with controls (maximum principal: 51.5 ± 23.7 vs. 75.1 ± 21.4%, P
Source: The International Journal of Cardiovascular Imaging - September 30, 2019 Category: Radiology Source Type: research

Should the septum be included in the assessment of right ventricular longitudinal strain? An ultrasound two-dimensional speckle-tracking stress study
AbstractRight ventricular longitudinal strain (RVLS) by 2D speckle-tracking echocardiography (2D-STE) is a useful parameter for assessing systolic function. However, the exact method to perform it is not well defined as some authors evaluate only free wall (FW) segments while others include all six RV segments. To compare the assessment of RVLS at rest and during exercise by these two approaches. Echocardiography was performed on 80 healthy subjects at rest and during exercise. The analysis consisted of standard and 2D-STE assessment of RV global and segmental strain tracing only RVFW and also tracing all six RV segments. ...
Source: The International Journal of Cardiovascular Imaging - September 30, 2019 Category: Radiology Source Type: research

A stent fracture associated with giant coronary aneurysm
We reported a case about the stent fracture associated with dissected flaps and one giant coronary artery aneurysms. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - September 27, 2019 Category: Radiology Source Type: research

Automated 4-dimensional regional myocardial strain evaluation using cardiac computed tomography
AbstractEvaluation of myocardial regional function is generally performed by visual “eyeballing” which is highly subjective. A robust quantifiable parameter of regional function is required to provide an objective, repeatable and comparable measure of myocardial performance. We aimed to evaluate the clinical utility of novel regional myocardial strain software from cardiac comp uted tomography (CT) datasets. 93 consecutive patients who had undergone retrospectively gated cardiac CT were evaluated by the software, which utilizes a finite element based tracking algorithm through the cardiac cycle. Circumferential...
Source: The International Journal of Cardiovascular Imaging - September 18, 2019 Category: Radiology Source Type: research

Quantification of intramyocardial hemorrhage volume using magnetic resonance imaging with three-dimensional T1-weighted sequence in patients with ischemia-reperfusion injury: a semi-automated image processing technique
AbstractAlthough intramyocardial hemorrhage (IMH) is a poor prognostic factor caused by ischemia reperfusion injury, little evidence is available regarding the association between IMH volume and biomarkers. In the present study, we measured IMH volume using three-dimensional (3D) T1-weighted magnetic resonance imaging (T1-MRI) and investigated its association with biomarkers. Moreover, the accuracy of semi-automatic measurement of IMH volume was validated. We retrospectively enrolled 33 consecutive patients (mean age 67  ± 11 years) who underwent cardiac MRI after reperfusion therapy for acute myo...
Source: The International Journal of Cardiovascular Imaging - September 13, 2019 Category: Radiology Source Type: research

Myocardial work is a predictor of exercise tolerance in patients with dilated cardiomyopathy and left ventricular dyssynchrony
AbstractThe assessment of myocardial work (MW) by pressure –strain loops is a recently introduced tool for the assessment of myocardial performance. Aim of the present study is to evaluate the relationship between myocardial work and exercise tolerance in patients with dilated cardiomyopathy (DCM). 51 patients with DCM (mean age 57 ± 13 years, left v entricular ejection fraction: 32 ± 9%) underwent cardiopulmonary exercise test (CPET) to assess exercise performance. 22 patients (43%) had left or right bundle branch block with QRS duration >  120 ms. Tran...
Source: The International Journal of Cardiovascular Imaging - September 11, 2019 Category: Radiology Source Type: research

Differences in clinical valve size selection and valve size selection for patient-specific computer simulation in transcatheter aortic valve replacement (TAVR): a retrospective multicenter analysis
AbstractValve size selection for transcatheter aortic valve replacement (TAVR) is currently based on cardiac CT-scan. At variance with patient-specific computer simulation, this does not allow the assessment of the valve-host interaction. We aimed to compare clinical valve size selection and valve size selection by an independent expert for computer simulation. A multicenter retrospective analysis of valve size selection by the physician and the independent expert in 141 patients who underwent TAVR with the self-expanding CoreValve or Evolut R. Baseline CT-scan was used for clinical valve size selection and for patient-spe...
Source: The International Journal of Cardiovascular Imaging - September 11, 2019 Category: Radiology Source Type: research