Echocardiographic assessment of regional right ventricular systolic function using two-dimensional strain echocardiography and evaluation of the predictive ability of longitudinal 2D-strain imaging for pulmonary arterial hypertension in systemic sclerosis patients
AbstractSystemic sclerosis (SSc) is a generalized connective tissue disorder, and SSc patients are at risk of developing pulmonary arterial hypertension (PAH). The aims of this study are to evaluate the right ventricular regional systolic function using two-dimensional speckle-tracking echocardiography (2D STE) and to determine the predictive ability of peak longitudinal systolic strain (PLSS) at the RV lateral wall for PAH in SSc patients. 80 SSc patients (mean age 51  ± 12 years) were included in the study. Echocardiography and 2D STE were performed at baseline and after 12 months. RHC was ...
Source: The International Journal of Cardiovascular Imaging - January 10, 2018 Category: Radiology Source Type: research

Atypical presentation of a primary cardiac malignant peripheral nerve sheath tumor
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - January 10, 2018 Category: Radiology Source Type: research

Optical frequency-domain imaging findings to predict good stent expansion after rotational atherectomy for severely calcified coronary lesions
AbstractWe aimed to evaluate the optical frequency-domain imaging (OFDI) findings after rotational atherectomy (RA) that predict good stent expansion for severely calcified coronary lesions. Fifty consecutive calcified lesions were subjected to RA under OFDI guidance. We performed OFDI just after RA and stenting. We measured the morphology of calcium after RA, and assessed how these factors influence stent expansion. The stent expansion index was defined as the minimum stent area divided by the average of the proximal and distal reference lumen areas. Minimum thickness of calcification in the intima after RA showed a signi...
Source: The International Journal of Cardiovascular Imaging - January 9, 2018 Category: Radiology Source Type: research

Scan –rescan reproducibility of diastolic left ventricular kinetic energy, viscous energy loss and vorticity assessment using 4D flow MRI: analysis in healthy subjects
AbstractThe aim of the current  study was to assess the scan–rescan reproducibility of left ventricular (LV) kinetic energy (KE), viscous energy loss (EL) and vorticity during diastole from four-dimensional flow magnetic resonance imaging (4D flow MRI) in healthy subjects. Twelve volunteers (age 27 ± 3 years) underwent w hole-heart 4D flow MRI twice in one session. In-scan consistency was evaluated by correlation between KE and EL. ELindex was computed to measure the amount of EL relative to KE over diastole. Scan –rescan analysis was performed to test reproducibility of volumetri...
Source: The International Journal of Cardiovascular Imaging - January 5, 2018 Category: Radiology Source Type: research

Quantitative inversion time prescription for myocardial late gadolinium enhancement using T1-mapping-based synthetic inversion recovery imaging: reducing subjectivity in the estimation of inversion time
AbstractTo develop a quantitative T1-mapping-based synthetic inversion recovery (IRsynth) approach to calculate the optimal inversion time (TI0) for late gadolinium enhancement (LGE) imaging. Prospectively enrolled patients (n  = 130, 58 ± 16 years) underwent cardiac MRI on a 1.5T system including Look-Locker TI-scout (LL), modified LL IR (MOLLI)-based T1-mapping, and LGE acquisitions. Patients were randomized into two groups: LL group (TI-scout followed T1-mapping) or MOLLI group (T1-mapping followed TI-scout). In both groups, the second acquisition was used to determine the TI0 for...
Source: The International Journal of Cardiovascular Imaging - January 5, 2018 Category: Radiology Source Type: research

The clinical value of assessing right ventricular diastolic function after balloon pulmonary angioplasty in patients with chronic thromboembolic pulmonary hypertension
AbstractChronic thromboembolic pulmonary hypertension (CTEPH) has a poor prognosis because of the associated progressive right heart failure. Accurate evaluation of right ventricular (RV) function would thus be useful to predict prognosis. However, the significance of RV diastolic function remains unclear. We aimed to identify which echocardiographic measures are most accurate, and potentially useful, in assessing RV diastolic function in patients with CTEPH, and to study the effects of balloon pulmonary angioplasty (BPA) on them. We enrolled 53 CTEPH patients who underwent BPA. Echocardiographic parameters, including two-...
Source: The International Journal of Cardiovascular Imaging - December 30, 2017 Category: Radiology Source Type: research

Influence of iterative reconstruction on coronary calcium scores at multiple heart rates: a multivendor phantom study on state-of-the-art CT systems
The objective of this study was to evaluate the influence of iterative reconstruction on coronary calcium scores (CCS) at different heart rates for four state-of-the-art CT systems. Within an anthropomorphic chest phantom, artificial coronary arteries were translated in a water-filled compartment. The arteries contained three different calcifications with low (38  mg), medium (80 mg) and high (157 mg) mass. Linear velocities were applied, corresponding to heart rates of 0,  75 bpm. Data were acquired on four state-of-the-art CT systems (CT1–CT4) with routinely used CCS protocols. Filtered b...
Source: The International Journal of Cardiovascular Imaging - December 28, 2017 Category: Radiology Source Type: research

Myocardial perfusion in patients with non-ischaemic systolic heart failure and type 2 diabetes: a cross-sectional study using Rubidium-82 PET/CT
AbstractBoth patients with non-ischaemic systolic heart failure and patients with type 2 diabetes (T2DM) often have reduced myocardial blood flow without significant coronary atherosclerosis. However, the mechanisms are not fully understood. The aim of this study was to investigate whether perfusion is reduced additionally when the 2 are combined. In a cross-sectional study, we scanned patients with non-ischaemic systolic heart failure with and without T2DM using Rubidium-82 positron emission tomography/computed tomography at rest and adenosine-induced stress, thereby obtaining the myocardial flow reserve (myocardial flow ...
Source: The International Journal of Cardiovascular Imaging - December 28, 2017 Category: Radiology Source Type: research

Influence of heart rate on coronary calcium scores: a multi-manufacturer phantom study
AbstractTo evaluate the influence of heart rate on coronary calcium scores (CCS) using a dynamic phantom on four high-end computed tomography (CT) systems from different manufacturers. Artificial coronary arteries were moved in an anthropomorphic chest phantom at linear velocities, corresponding to  75 beats per minute (bpm). Data was acquired with routinely used clinical protocols for CCS on four high-end CT systems (CT1–CT4). CCS, quantified as Agatston and mass scores were compared to reference scores at  75 bpm), Agatston scores of the low mass calcification were similar to the reference score,...
Source: The International Journal of Cardiovascular Imaging - December 28, 2017 Category: Radiology Source Type: research

Assessment of mitral regurgitation by 3-dimensional proximal flow convergence using magnetic resonance imaging: comparison with echo-Doppler
AbstractTo test the feasibility of assessing mitral regurgitation (MR) severity using cardiac magnetic resonance (CMR) 4D velocity vectors to quantify regurgitant volume (RVol) by analysis of the proximal flow convergence, compared to Doppler based proximal isovelocity surface area (PISA) and CMR volume-based methods. In a prospectively designed study, 27 patients with various grades of MR underwent CMR and echo-Doppler on the same day. By CMR, multiple slices were obtained parallel to the mitral valve by phase-contrast imaging, using 3D velocity vectors, as well as short-axis cine images for left and right ventricular vol...
Source: The International Journal of Cardiovascular Imaging - December 19, 2017 Category: Radiology Source Type: research

Cardiac and respiratory-gated volumetric murine ultrasound
AbstractCurrent cardiovascular ultrasound mainly employs planar imaging techniques to assess function and physiology. These techniques rely on geometric assumptions, which are dependent on the imaging plane, susceptible to inter-observer variability, and may be inaccurate when studying complex diseases. Here, we developed a gated volumetric murine ultrasound technique to visualize cardiovascular motion with high spatiotemporal resolution and directly evaluate cardiovascular health. Cardiac and respiratory-gated cine loops, acquired at 1000 frames-per-second from sequential positions, were temporally registered to generate ...
Source: The International Journal of Cardiovascular Imaging - December 12, 2017 Category: Radiology Source Type: research

Early detection of left ventricular diastolic dysfunction using conventional and speckle tracking echocardiography in a large animal model of metabolic dysfunction
AbstractLeft ventricular (LV) diastolic dysfunction is one of the important mechanisms responsible for symptoms in patients with heart failure. The aim of the current study was to identify parameters that may be used to detect early signs of LV diastolic dysfunction in diabetic pigs on a high fat diet, using conventional and speckle tracking echocardiography. The study population consisted of 16 healthy G öttingen minipigs and 18 minipigs with experimentally induced metabolic dysfunction. Echocardiography measurements were performed at baseline and 3-month follow-up. The ratio of peak early (E) and late filling veloci...
Source: The International Journal of Cardiovascular Imaging - December 12, 2017 Category: Radiology Source Type: research

Multi-view approach for the diagnosis of pulmonary hypertension using transthoracic echocardiography
AbstractPulmonary hypertension (PH) is a disease with severe morbidity and mortality. Echocardiography plays an essential role in the screening of PH. The quality of the acquired continuous wave Doppler signal is the major limitation of the method and can greatly affect the accuracy of estimated pulmonary pressures. The aim of this study was to evaluate the clinical need to image from multiple ultrasound windows in patients with suspected pulmonary hypertension. We prospectively evaluated 65 patients (43% male, mean age 67.2  years) with echocardiography and right heart catheterization. 17% had invasively normal pulmo...
Source: The International Journal of Cardiovascular Imaging - December 11, 2017 Category: Radiology Source Type: research

Presence of post-systolic shortening is an independent predictor of heart failure in patients following ST-segment elevation myocardial infarction
AbstractFollowing an ischemic event post systolic shortening (PSS) may occur. We investigated the association between PSS in patients with ST-segment elevation myocardial infarction (STEMI) following primary  percutaneous coronary intervention (pPCI) and occurrence of cardiovascular events at follow-up. A total of 373 patients admitted with STEMI and treated with pPCI were prospectively included in the study cohort. All patients were examined by echocardiography a median of 2 days after admission (int erquartile range, 1–3 days). PSS was measured by color tissue Doppler imaging (TDI) and speckle tracki...
Source: The International Journal of Cardiovascular Imaging - December 11, 2017 Category: Radiology Source Type: research

CT based 3D printing is superior to transesophageal echocardiography for pre-procedure planning in left atrial appendage device closure
AbstractAccurate assessment of the left atrial appendage (LAA) is important for pre-procedure planning when utilizing device closure for stroke reduction. Sizing is traditionally done with transesophageal echocardiography (TEE) but this is not always precise. Three-dimensional (3D) printing of the LAA may be more accurate. 24 patients underwent Watchman device (WD) implantation (71  ± 11 years, 42% female). All had complete 2-dimensional TEE. Fourteen also had cardiac computed tomography (CCT) with 3D printing to produce a latex model of the LAA for pre-procedure planning. Device implantation was unsuc...
Source: The International Journal of Cardiovascular Imaging - December 8, 2017 Category: Radiology Source Type: research

German cardiac CT registry: indications, procedural data and clinical consequences in 7061 patients undergoing cardiac computed tomography
AbstractCardiac computed tomography permits quantification of coronary calcification as well as detection of coronary artery stenoses after contrast enhancement. Moreover, cardiac CT offers high-resolution morphologic and functional imaging of cardiac structures which is valuable for various structural heart disease interventions and electrophysiology procedures. So far, only limited data exist regarding the spectrum of indications, image acquisition parameters as well as results and clinical consequences of cardiac CT examinations using state-of-the-art CT systems in experienced centers. Twelve cardiology centers with pro...
Source: The International Journal of Cardiovascular Imaging - December 1, 2017 Category: Radiology Source Type: research

Epicardial adipose tissue is associated with high-risk plaque feature progression in non-culprit lesions
AbstractSeveral studies have suggested a link between epicardial adipose tissue (EAT) volume and high-risk plaques (HRPs); however, little is known about the association between EAT volume and HRP progression in non-culprit lesions (NCLs). Therefore, we evaluated whether EAT can independently predict HRP characteristic progression in NCLs by coronary computed tomography angiography (CCTA). In this single-centre trial, we analysed 131 consecutive patients (median age 61  years, male 72.52%) undergoing CCTA with percutaneous coronary intervention (PCI) for culprit lesions. All patients were scheduled to undergo follow-u...
Source: The International Journal of Cardiovascular Imaging - November 21, 2017 Category: Radiology Source Type: research

Assessment of coronary artery by prospective ECG-triggered 256 multi-slice CT on children with congenital heart disease
This study aims to investigate the imaging quality and radiation dose of prospective ECG-triggered 256 multi-slice computer tomography (MSCT) in accessing the coronary artery (CA) in children. Coronary arteries of 149 children were evaluated using prospective ECG-triggered 256 MSCT with the same system settings. A four-point scoring system was applied to study the capability of MSCT in detecting CA in these patients. Signal, noise and contrast-to-noise ratios (CNR) were analyzed to investigate the association of image quality with age. Then, volumetric CT dose index (CTDIvol), dose-length product (DLP), and effective dose ...
Source: The International Journal of Cardiovascular Imaging - November 21, 2017 Category: Radiology Source Type: research

Very early neointimal coverage of new biodegradable polymer drug-eluting stent compared with durable polymer everolimus-eluting stent evaluated by optical frequency domain imaging
AbstractPolymeric component is associated with the increased risk of delayed vessel healing and stent endothelialization. We aimed to clarify neointimal coverage within 1  month after implantation of the new-generation abluminal biodegradable polymer (BP) drug-eluting stent (DES) compared with the second-generation durable polymer (DP) everolimus-eluting stent (EES). Between November 2015 and October 2016, 32 BP-DES and 25 DP-EES were evaluated by optical frequency domain imaging (OFDI) within 1 month after the procedure. The average interval to follow-up OFDI was not significantly different between the groups (1...
Source: The International Journal of Cardiovascular Imaging - November 20, 2017 Category: Radiology Source Type: research

Introduction to topical issue on myocardial classification
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 20, 2017 Category: Radiology Source Type: research

Optical coherence tomography-guided percutaneous coronary intervention compared with other imaging guidance: a meta-analysis
AbstractThe use of optical coherence tomography (OCT) in PCI guidance is limited perhaps by the lack of adequately powered studies which compare its efficacy and outcomes to the other more popular imaging modalities. We therefore performed a meta-analysis to compare clinical outcomes following OCT-guided PCI with the other imaging modalities in two separate comparisons. We abstracted data from randomized control trials and observational comparative studies focusing on OCT versus either angiography- or IVUS-guided PCI outcomes identified following a systematic search (April 2006 and May 2017). This meta-analysis included a ...
Source: The International Journal of Cardiovascular Imaging - November 18, 2017 Category: Radiology Source Type: research

Vessel centerline reconstruction from non-isocentric and non-orthogonal paired monoplane angiographic images
ConclusionsWe developed a vessel centerline reconstruction method for non-isocentric and non-orthogonal angiographic images. It demonstrated high accuracy and good reproducibility in vitro, in vivo, and in clinical setting, suggesting that our new method is clinically applicable despite the small sample size of clinical data. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 14, 2017 Category: Radiology Source Type: research

Relationship between airflow obstruction and coronary atherosclerosis in asymptomatic individuals: evaluation by coronary CT angiography
AbstractAirflow obstruction is associated with increased cardiovascular morbidity and mortality. However, the causal mechanisms linking airflow obstruction with higher incidence of cardiovascular events remain elusive. We evaluated the relationship between airflow obstruction, a key feature of chronic obstructive pulmonary disease (COPD), and prevalence, extent, and severity of coronary atherosclerosis in a large cohort of asymptomatic subjects. Participants were recruited from those undergoing spirometry and coronary computed tomography angiography (CCTA) as part of a general health evaluation from March 2009 to February ...
Source: The International Journal of Cardiovascular Imaging - November 14, 2017 Category: Radiology Source Type: research

Computational fluid dynamic modelling to determine the hemodynamic effects of implanting a transcatheter mitral valve within the left ventricle
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 13, 2017 Category: Radiology Source Type: research

Two-dimensional speckle-tracking global longitudinal strain in high-sensitivity troponin-negative low-risk patients with unstable angina: a “resting ischemia test”?
AbstractWith the introduction of high-sensitivity troponin (hsTNI) assays, the clinical significance unstable angina (UA) has become uncertain. We hypothesized that impaired left ventricular (LV) two-dimensional speckle-tracking echocardiography (2D-STE)-derived peak global longitudinal strain (GLS) was able to exclude the presence of significant coronary artery disease (CAD) in UA patients without prior cardiovascular (CV) events and with a normal LV ejection fraction (LVEF). From a cohort of 200 patients admitted with UA, we selected 61 patients without prior CV events and with a normal LVEF; of these, 48 (79%) underwent...
Source: The International Journal of Cardiovascular Imaging - November 11, 2017 Category: Radiology Source Type: research

Clinical outcome and functional characteristics of patients with asymptomatic low-flow low-gradient severe aortic stenosis with preserved ejection fraction are closer to high-gradient severe than to moderate aortic stenosis
AbstractAsymptomatic “paradoxic” severe low-flow low-gradient aortic stenosis with preserved ejection fraction (PAS) constitutes a challenging condition where the optimal management and follow-up remain elusive. We evaluated the clinical outcome in patients with PAS as compared to asymptomatic patients with moderate (MAS) or classical severe aortic stenosis (CAS). Consecutive asymptomatic moderate or severe aortic stenosis patients without concomitant other heart or lung disease (n = 121) were invited. Participants (n = 74) were assigned to three subgroups with regard to degree of ao...
Source: The International Journal of Cardiovascular Imaging - November 9, 2017 Category: Radiology Source Type: research

Relation of presystolic wave on doppler examination to syntax score in patients with acute myocardial infarction
ConclusionsWe found that the presence of PSW was related with higher LVEF, lower SXscore and lower stage diastolic dysfunction in patients with AMI. PSW may be used in prediction of the coronary artery disease complexity and it could help risk stratification in patients with AMI. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 9, 2017 Category: Radiology Source Type: research

Comparison of effects of losartan and metoprolol on left ventricular and aortic function at rest and during exercise in chronic aortic regurgitation
AbstractAortic regurgitation (AR) increases the hemodynamic load on both the left ventricle (LV) and the aorta. Vasodilators and beta-blockers both reduce systemic blood pressure, but their relative effects on the LV and aortic function and aortic regurgitant fraction in chronic AR are uncertain. We aimed to compare short-term effects of losartan and metoprolol on LV and aortic function in asymptomatic patients with chronic moderate to severe AR, both at rest and during exercise, using cardiac magnetic resonance (CMR) imaging. 17 chronic AR patients were randomized to 4 –6 weeks losartan followed by metoprolol, or vi...
Source: The International Journal of Cardiovascular Imaging - November 8, 2017 Category: Radiology Source Type: research

Quantification of pulmonary regurgitation and prediction of pulmonary valve replacement by echocardiography in patients with congenital heart defects in comparison to cardiac magnetic resonance imaging
In conclusion, echocardiographic assessment of PR was feasible. Both parameters, PHT and in particular slope, were predictors for PVR. Thus, echocardiography appears appropriate in the management of patients with PR. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 8, 2017 Category: Radiology Source Type: research

Impact of transducer frequency setting on speckle tracking measures
AbstractSpeckle tracking echocardiography is an emerging technique, which is currently being included in clinical guidelines. We sought to investigate the impact of transducer frequency settings on speckle tracking derived measures. The study comprised of 22 subjects prospectively enrolled for a randomized controlled trial (LOOP-study, Clinicaltrials.gov:NCT02036450). Patients were above 70  years of age with increased risk of stroke, and had an echocardiogram performed, which included focused images of the left ventricle. Focused images were obtained with the transducer frequency set at both 1.7/3.3 and 1.5/3.0 ...
Source: The International Journal of Cardiovascular Imaging - November 3, 2017 Category: Radiology Source Type: research

Mechanical dyssynchrony alters left ventricular flow energetics in failing hearts with LBBB: a 4D flow CMR pilot study
AbstractThe impact of left bundle branch block (LBBB) related mechanical dyssynchrony on left ventricular (LV) diastolic function remains unclear. 4D flow cardiovascular magnetic resonance (CMR) has provided reliable markers of LV dysfunction: reduced volume and kinetic energy (KE) of the portion of LV inflow which passes directly to outflow (Direct Flow) has been demonstrated in failing hearts compared to normal hearts. We sought to investigate the impact of mechanical dyssynchrony on diastolic function by comparing 4D flow in myopathic LVs with and without LBBB. CMR data were acquired at 3  T in 22 heart failure pat...
Source: The International Journal of Cardiovascular Imaging - November 2, 2017 Category: Radiology Source Type: research

Prognostic value of real-time three-dimensional echocardiography compared to two-dimensional echocardiography in patients with systolic heart failure
AbstractHeart failure(HF) is associated with morbidity and mortality. Real-time three-dimensional echocardiography (RT3DE) may offer additional prognostic data in patients with HF. The study aimed to evaluate the prognostic value of real-time three-dimensional echocardiography (RT3DE). This is a prospective study that included 89 patients with HF and left ventricular ejection fraction (LVEF)  
Source: The International Journal of Cardiovascular Imaging - November 2, 2017 Category: Radiology Source Type: research

Risk classification of highly sensitive troponin I predict presence of vulnerable plaque assessed by dual source coronary computed tomography angiography
AbstractPatients presenting to the emergency department with acute chest pain, negative conventional troponin and electrocardiogram require serial testing to rule out acute coronary syndrome (ACS). We studied the association of highly sensitive troponin (hsTn) I with vulnerable plaque features as detected by coronary dual source computed tomography angiography (DSCTA) and determined whether hsTn  I at the time of presentation combined with early DSCTA could improve classification of patients as high-risk or low risk for ACS. We included 220 patients with acute chest pain, negative electrocardiogram and conventional tr...
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Dynamic changes in aortic impedance after transcatheter aortic valve replacement and its impact on exploratory outcome
AbstractValvulo-arterial impedance (Zva) has been shown to predict worse outcome in medically managed aortic stenosis (AS) patients. We aimed to investigate the association between Zva and left ventricular (LV) adaptation and to explore the predictive value of Zva for cardiac functional recovery and outcome after transcatheter aortic valve replacement (TAVR). We prospectively enrolled 128 patients with AS who underwent TAVR. Zva was calculated as: (systolic blood pressure  + mean transaortic gradient)/stroke volume index). Echocardiographic assessment occurred at baseline, 1-month and 1-year after TAVR. The p...
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Stress echocardiography with smartphone: real-time remote reading for regional wall motion
AbstractThe diffusion of smart-phones offers access to the best remote expertise in stress echo (SE). To evaluate the reliability of SE based on smart-phone filming and reading. A set of 20 SE video-clips were read in random sequence with a multiple choice six-answer test by ten readers from five different countries (Italy, Brazil, Serbia, Bulgaria, Russia) of the “SE2020” study network. The gold standard to assess accuracy was a core-lab expert reader in agreement with angiographic verification (0 = wrong, 1 = right). The same set of 20 SE studies were read, in random order and>2...
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Harmonic subtraction for evaluating right ventricle ejection fraction from planar equilibrium radionuclide angiography
We report an initial investigation of a subtraction-based method to estimate right ventricle ejection fraction (RVEF) from ECG-gated planar equilibrium radionuclide angiography (ERNA) data. Twenty-six consecutive patients referred for scintigraphic evaluation of cardiac function prior to chemotherapy had ECG-gated first-pass (FP) imaging and ERNA imaging performed following the same radiotracer injection. RVEF was computed from FP images (RVEFFP) and separately from ERNA images (RVEFERNA). Standard methods for computing ejection fractions were used to obtain RVEFFP values. RVEFERNA values were obtained using harmonic subtr...
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Effects of caffeine intake prior to stress cardiac magnetic resonance perfusion imaging on regadenoson- versus adenosine-induced hyperemia as measured by T1 mapping
AbstractThe antagonistic effects of caffeine on adenosine receptors are a possible cause of false-negative stress perfusion imaging. The purpose of this study was to determine the effects of coffee intake
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

The effect of strut thickness on shear stress distribution in a preclinical model
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Reliability of echocardiographic speckle-tracking derived bi-atrial strain assessment under different hemodynamic conditions
AbstractThe aim of this study was to assess intra- and inter-observer variability of left (LA) and right atrial (RA) strain indices obtained by two-dimensional speckle-tracking echocardiography (2D-STE) in a healthy group of individuals at low-altitude and after rapid ascent to high-altitude in order to provoke altered systemic and pulmonary hemodynamics otherwise seen in various cardiac diseases. Twenty healthy subjects underwent transthoracic echocardiography during a baseline examination at low-altitude (424  m) as well as 7, 20 and 44 h after arrival at high-altitude (4559 m). Atrial strain indices (i.e. rese...
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Myocardial edema in acute myocarditis: relationship of T2 relaxometry and late enhancement burden by using dual-contrast turbo spin-echo MRI
AbstractTo quantify myocardial edema by using a T2 relaxometry approach with a dual-contrast turbo spin-echo (dcTSE) sequence in patients with acute myocarditis regarding focal late gadolinium enhancement (LGE) burden. CMR T2 relaxometry was performed in 39 patients (age 41  ± 19 years; 36% women) with LGE in a typical myocarditis pattern and in ten healthy volunteers (age 46 ± 12; 60% woman). dcTSE sequence (echo time 29 and 75 ms, respectively) was used for T2 mapping, analysis were performed on the basis of region of interest (ROI). Myocardial T2 relaxati on times (T2 RT) i...
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Assessment of right ventricular longitudinal strain by 2D speckle tracking imaging compared with RV function and hemodynamics in pulmonary hypertension
AbstractThe right ventricular longitudinal strain (RVLS) of pulmonary hypertension (PH) patients and its relationship with RV function parameters measured by echocardiography and hemodynamic parameters measured by right heart catheterization was investigated. According to the WHO functional class (FC), 66 PH patients were divided into FC I/II (group 1) and III/IV (group 2). RV function parameters were measured by echocardiographic examinations. Hemodynamic parameters were obtained by right heart catheterization. Patients in group 2 had higher systolic pulmonary artery pressure (sPAP;P 
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Carbon dioxide (CO 2 ) angiography as an option for endovascular abdominal aortic aneurysm repair (EVAR) in patients with chronic kidney disease (CKD)
AbstractTo assess feasibility, efficacy and safety of carbon dioxide (CO2) digital subtraction angiography (DSA) to guide endovascular aneurysm repair (EVAR) in a cohort of patients with chronic kidney disease (CKD). After Ethical Committee approval, the records of 13 patients (all male, mean age 74.6  ± 8.0 years) with CKD, who underwent EVAR to exclude an abdominal aortic aneurysm (AAA) under CO2 angiography guidance, were reviewed. The AAA to be excluded had a mean diameter of 52.0  ± 8.0 mm. CO2 angiography was performed by automatic (n  = 7) or hand (n&thins...
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Cardiac MRI as a useful tool to differentiate tumor and thrombus
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Right coronary artery ectasia with coronary arteriovenous fistula mimicking Takotsubo-like left ventricular dysfunction in the electrocardiogram
AbstractA coronary arteriovenous fistula is an abnormal connection between a coronary artery and any of four chambers in the heart. We repot a unique case with a fistulae originating from right coronary artery and draining into the right atrium via coronary sinus although Takotsubo-like left ventricular dysfunction or acute myocardial infarction was initially thought to have occurred according to the electrocardiogram finding. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Pulmonary vascular resistance and proper timing of percutaneous balloon mitral valvotomy
AbstractIt is frequent to see pulmonary hypertension (PH) in patients with mitral stenosis (MS) secondary to increased pulmonary vascular resistance (PVR), data about the effect of PVR on the results of percutaneous balloon mitral valvotomy (PBMV) are insufficient. To detect the role of PVR in predicting residual PH immediately after PBMV. This prospective study comprised 49 consecutive patients with moderate to severe MS who were investigated pre and within 48  h post a successful PBMV for the first time. Echocardiography was used to assess the mitral valve area (MVA), mean transmitral pressure gradient (MPG), mitral...
Source: The International Journal of Cardiovascular Imaging - October 30, 2017 Category: Radiology Source Type: research

Fusion of CT coronary angiography and whole-heart dynamic 3D cardiac MR perfusion: building a framework for comprehensive cardiac imaging
In conclusion, 3D fusion of CTCA/3D-CMR-Perf facilitates anatomic correlation of coronary lesions and stress-induced myocardial perfusion deficits thereby helping to refine diagnostic assessment of CAD. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - October 28, 2017 Category: Radiology Source Type: research

In-stent fractional flow reserve variations and related optical coherence tomography findings: the FFR –OCT co-registration study
AbstractWe sought to assess in-stent variations in fractional flow reserve (FFR) in patients with previous percutaneous coronary intervention (PCI) and to associate any drop in FFR with findings by optical coherence tomography (OCT) imaging. Suboptimal post-PCI FFR values were previously associated with poor outcomes. It is not known to which extent in-stent pressure loss contributes to reduced FFR. In this single-arm observational study, 26 patients who previously underwent PCI with drug-eluting stent or scaffold implantation were enrolled. Motorized FFR pullback during continuous intravenous adenosine infusion and OCT as...
Source: The International Journal of Cardiovascular Imaging - October 27, 2017 Category: Radiology Source Type: research

Placing heart failure and diastolic dysfunction in the case of cardiac amyloid into perspective: what an amyloid heart really looks like
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - October 26, 2017 Category: Radiology Source Type: research

CMR assessment and clinical outcomes of hypertrophic cardiomyopathy with or without ventricular remodeling in the end-stage phase
AbstractEnd-stage phase of hypertrophic cardiomyopathy (ES-HCM) is a recognized part of HCM disease spectrum. Information on cardiac magnetic resonance (CMR) studies for ES-HCM especially for those without ventricular remodeling has been limited. We aimed to evaluate the morpho-functional and tissue features of ES-HCM with or without ventricular remodeling and to explore CMR prognostic value in these patients. We analysed CMR scans of sixty-three ES-HCM patients and divided them into those with ventricular dilatation (D-ES, n  = 41) and those with normal ventricular size (N-ES, n = 22). Cox prop...
Source: The International Journal of Cardiovascular Imaging - October 25, 2017 Category: Radiology Source Type: research

High T2-weighted signal intensity for risk prediction of sudden cardiac death in hypertrophic cardiomyopathy
AbstractIn search of improved risk stratification in hypertrophic cardiomyopathy (HCM), CMR imaging has been implicated as a potential tool for prediction of sudden cardiac death (SCD). In follow-up of the promising results with extensive late gadolinium enhancement (LGE), high signal-intensity on T2-weighted imaging (HighT2) has become subject of interest given its association with markers of adverse disease progression, such as LGE, elevated troponin and non-sustained ventricular tachycardia. In lack of follow-up cohorts, we initiated an exploratory study on the association between HighT2 and the internationally defined ...
Source: The International Journal of Cardiovascular Imaging - October 23, 2017 Category: Radiology Source Type: research