Reproducibility of coronary atherosclerotic plaque characteristics in populations with low, intermediate, and high prevalence of coronary artery disease by multidetector computer tomography: a guide to reliable visual coronary plaque assessments
Abstract To evaluate the interobserver agreement of visual coronary plaque characteristics by 320-slice multidetector computed tomography (MDCT) in three populations with low, intermediate and high CAD prevalence and to identify determinants for the reproducible assessment of these plaque characteristics. 150 patients, 50 asymptomatic subjects from the general population (low CAD prevalence), 50 symptomatic non-acute coronary syndrome (non-ACS) patients (intermediate CAD prevalence), and 50 ACS patients (high CAD prevalence), matched according to age and gender, were retrospectively enrolled. All coronary segments...
Source: The International Journal of Cardiovascular Imaging - July 4, 2016 Category: Radiology Source Type: research

Erratum to: Association of cardiovascular disease risk factors with left ventricular mass, biventricular function, and the presence of silent myocardial infarction on cardiac MRI in an asymptomatic population
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - July 4, 2016 Category: Radiology Source Type: research

Early vascular healing after titanium –nitride–oxide-coated stent versus platinum–chromium everolimus-eluting stent implantation in patients with acute coronary syndrome
Abstract Data on early vascular healing response of novel stent designs are scarce. In this randomized prospective trial, we sought to compare early neointimal coverage of cobalt –chromium-based titanium–nitride–oxide-coated bioactive stents (CoCr-BAS) versus platinum–chromium everolimus-eluting stents (PtCr-EES) at 2-month follow-up in patients with acute coronary syndrome (ACS). Forty patients with ACS were randomized to receive either CoCr-BAS (n = 19) or PtCr -EES (n = 21). Neointimal strut coverage and strut apposition were examined by optical coherence tomography; ...
Source: The International Journal of Cardiovascular Imaging - July 1, 2016 Category: Radiology Source Type: research

Three-dimensional ultrasound measurements of carotid vessel wall and plaque thickness and their relationship with pulmonary abnormalities in ex-smokers without airflow limitation
Abstract The relationship between carotid disease and modestly abnormal airflow in ex-smokers without chronic obstructive pulmonary disease (COPD) is not well-understood. We generated 3D ultrasound measurements of carotid vessel-wall-plus-plaque thickness (VWT) and vessel wall volume (VWV) to quantify and evaluate such carotid ultrasound measurements in ex- and never-smokers without airflow limitation. These patients did not fulfill the diagnostic criteria for COPD. We also investigated the relationship of carotid atherosclerosis with pulmonary phenotypes of COPD. We evaluated 61 subjects without a clinical diagno...
Source: The International Journal of Cardiovascular Imaging - June 24, 2016 Category: Radiology Source Type: research

Morphological and functional abnormalities pattern in hypertrophy-free HCM mutation carriers detected with echocardiography
Abstract To evaluate if morphological or functional abnormalities could be detected with echocardiography in hypertrophic myocardiopathy (HCM) mutation carriers without left ventricle (LV) hypertrophy has developed. HCM is caused by extensive genes mutations found in two-third of patients. Because screening for carriership of a large population is unreasonable, identification of asymptomatic subjects is confined to the use of imaging such as echocardiography, by which subtle abnormalities can be detected. Comprehensive echocardiographic studies including morphological and functional assessment were performed. Asym...
Source: The International Journal of Cardiovascular Imaging - June 20, 2016 Category: Radiology Source Type: research

Application of computed tomographic virtual vascular intraluminal endoscopy
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - June 18, 2016 Category: Radiology Source Type: research

Left ventricular dysfunction in repaired tetralogy of Fallot: incidence and impact on atrial arrhythmias at long term-follow up
Abstract Left ventricle (LV) systolic dysfunction in repaired tetralogy of Fallot (TOF) has been identified as a risk factor for functional status and adverse outcome. The aims of this cross-sectional followed by a prospective study were: (1) to evaluate the prevalence of LV systolic dysfunction in a large cohort of adults with repaired tetralogy of Fallot, (2) to test the relationship between LV systolic dysfunction and other known risk factors and (3) to evaluate the impact of LV systolic dysfunction on adverse cardiac events. In a multicenter study, 237 adults repaired TOF (58 % males, age 30 &plu...
Source: The International Journal of Cardiovascular Imaging - June 18, 2016 Category: Radiology Source Type: research

12-month intravascular ultrasound observations from BiOSS ® first-in-man studies
Abstract The aim of this study was to analyze the difference in neointima pattern assessed by intravascular ultrasound (IVUS) between two dedicated bifurcation stents, BiOSS ® Expert and BiOSS® LIM at 12-month follow-up. This manuscript reports IVUS findings obtained from the analysis of patients enrolled into first-in-man registries initially assessing the BiOSS Expert® (paclitaxel) and BiOSS LIM® (sirolimus) stents. Quantitative angiographic analysis was performed pre, post-stenting, and at follow-up. IVUS examination was performed at 12 months. There were analyzed 34 cases (BiOSS Expert® 11 pat...
Source: The International Journal of Cardiovascular Imaging - June 17, 2016 Category: Radiology Source Type: research

12-month intravascular ultrasound observations from BiOSS® first-in-man studies
Abstract The aim of this study was to analyze the difference in neointima pattern assessed by intravascular ultrasound (IVUS) between two dedicated bifurcation stents, BiOSS® Expert and BiOSS® LIM at 12-month follow-up. This manuscript reports IVUS findings obtained from the analysis of patients enrolled into first-in-man registries initially assessing the BiOSS Expert® (paclitaxel) and BiOSS LIM® (sirolimus) stents. Quantitative angiographic analysis was performed pre, post-stenting, and at follow-up. IVUS examination was performed at 12 months. There were analyzed 34 cases (BiOSS Expert®...
Source: The International Journal of Cardiovascular Imaging - June 17, 2016 Category: Radiology Source Type: research

Cardiovascular magnetic resonance features of mechanical dyssynchrony in patients with left bundle branch block
This study aims to investigate the potential of CMR to characterize mechanical features of LBBB. CMR examinations from 43 patients with LBBB on their electrocardiogram, but without significant focal structural abnormalities, and from 43 age- and gender-matched normal controls were retrospectively reviewed. The following mechanical features of LBBB were evaluated: septal flash (SF), apical rocking (AR), delayed aortic valve opening measured relative to both end-diastole (AVOED) and pulmonic valve opening (AVOPVO), delayed left-ventricular (LV) free-wall contraction, and curvatures of the septum and LV free-wall. Septal disp...
Source: The International Journal of Cardiovascular Imaging - June 15, 2016 Category: Radiology Source Type: research

The ratio of epicardial to body fat improves the prediction of coronary artery disease beyond calcium and Framingham risk scores
Abstract The association between epicardial fat and coronary artery disease (CAD) might be affected by general adiposity. We aimed to determine whether the percentage of epicardial adipose tissue (%EAT), defined as the mass ratio of epicardial fat to body fat, could improve prediction of asymptomatic CAD. We consecutively enrolled 846 adults who underwent coronary computed tomography angiography as part of a health check-up and assessed their coronary stenosis severity and epicardial fat mass. Body fat mass was measured by bioelectrical impedance analysis. Subjects with CAD history, hyperthyroidism, pitting edema,...
Source: The International Journal of Cardiovascular Imaging - June 13, 2016 Category: Radiology Source Type: research

Echocardiographic outcomes of self-expandable CoreValve versus balloon-expandable Edwards SAPIEN XT valves: the comparison of two bioprosthesis implanted in a single centre
Abstract Transcatheter aortic valve implantation (TAVI) with self-expandable Medtronic CoreValve (MCV; Medtronic, Minneapolis, MN) or balloon-expandable Edwards SAPIEN XT valve (ESV; Edwards Lifesciences, Irvine, CA) has been widely used for treatment of high-risk patients with severe aortic stenosis (AS). There is limited data comparing the long-term hemodynamic performance of these two valves. Therefore, this study aimed to compare the short and long-term hemodynamic performance of TAVI with either MCV or ESV. A total of 78 patients who underwent TAVI in our center between June 01, 2012 and January 01, 2014 were...
Source: The International Journal of Cardiovascular Imaging - June 9, 2016 Category: Radiology Source Type: research

Pericardial inflammation with reversible constriction: prediction of recovery with cardiovascular magnetic resonance
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - June 7, 2016 Category: Radiology Source Type: research

Interventional left atrial appendage occlusion: added value of 3D transesophageal echocardiography for device sizing
Abstract Aim of this study was the assessment of left atrial appendage (LAA) dimensions comparing 2D- to 3D-TEE measurements in patients with nonvalvular atrial fibrillation undergoing percutaneous LAA occlusion. Patients underwent transesophageal echocardiography (TEE) before, during and 45 days after intervention. The maximal LAA orifice diameters in 2D-TEE (LODmax 2D) were obtained from multiple views. Test–retest reliability (screening vs. implantation), inter- and intra-observer variability for echocardiographic parameters were assessed by two independent examiners. Overall, 74 patients underwent p...
Source: The International Journal of Cardiovascular Imaging - June 6, 2016 Category: Radiology Source Type: research

Evaluation of knowledge-based reconstruction for magnetic resonance volumetry of the right ventricle after arterial switch operation for dextro-transposition of the great arteries
Abstract Right ventricular (RV) volume and function evaluation is essential in the follow-up of patients after arterial switch operation (ASO) for dextro-transposition of the great arteries (d-TGA). Cardiac magnetic resonance (CMR) imaging using the Simpson’s method is the gold-standard for measuring these parameters. However, this method can be challenging and time-consuming, especially in congenital heart disease. Knowledge-based reconstruction (KBR) is an alternative method to derive volumes from CMR datasets. It is based on the identification of a finite number of anatomical RV landmarks in various plane...
Source: The International Journal of Cardiovascular Imaging - June 2, 2016 Category: Radiology Source Type: research

Feasibility of ultra low-dose thallium stress-redistribution protocol including prone imaging in obese patients using CZT camera
Abstract High efficiency cadmium–zinc–telluride (CZT) cameras provide an opportunity to lower the injected activities of radiopharmaceuticals for single photon emission tomography (SPECT) myocardial perfusion imaging (MPI). The limits for reducing activities of thallium have not been determined, particularly in obese patients. After an injection of 0.7 megabecquerel (MBq) of thallium/kg, we collected an average 1.5 million counts for the 10-min acquisition in a pilot cohort of ten patients. After extrapolation, we reduced the administered activity to 0.5 MBq/kg to obtain the expected 1&n...
Source: The International Journal of Cardiovascular Imaging - June 2, 2016 Category: Radiology Source Type: research

Differences in aortic vortex flow pattern between normal and patients with stroke: qualitative and quantitative assessment using transesophageal contrast echocardiography
This study aimed to characterize aortic vortex flow pattern using transesophageal contrast echocardiography in normal and stroke patients. A total of 85 patients who diagnosed with ischemic stroke and 16 normal controls were recruited for this study. The 16 normal control subjects were designated as the control group, and the 85 ischemic stroke patients were designated as the stroke group. All subjects underwent contrast transesophageal echocardiography (TEE), and particle image velocimetry was used to assess aortic vortex flow. Qualitative and quantitative analyses of vortex flow morphology, location, phasic variation, an...
Source: The International Journal of Cardiovascular Imaging - June 1, 2016 Category: Radiology Source Type: research

Erratum to: Cardiovascular imaging 2014 in the International Journal of Cardiovascular Imaging
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - June 1, 2016 Category: Radiology Source Type: research

Adiposity assessed by anthropometric measures has a similar or greater predictive ability than dual-energy X-ray absorptiometry measures for abdominal aortic calcification in community-dwelling older adults
Abstract To determine whether adiposity assessed by dual-energy X-ray absorptiometry (DXA) compared to simple anthropometric assessments, are more predictive of abdominal aortic calcification (AAC), a risk factor for atherosclerosis. A cross-sectional study of 312 participants (60.3 % female) aged 70.6 ± 5.6 years was conducted in 2010–2011. AAC was assessed by radiography. Adiposity was estimated for whole body, trunk, android, gynoid and visceral regions using DXA in addition to body mass index (BMI), waist circumference (WC) and waist to hip ratio (WHR). WHR [tertile 1 as ...
Source: The International Journal of Cardiovascular Imaging - May 31, 2016 Category: Radiology Source Type: research

Derivation and validation of E/e′ ratio as a parameter in the evaluation of left atrial appendage thrombus formation in patients with nonvalvular atrial fibrillation
Abstract We sought to determine and prospectively validate, with concomitantly performed transthoracic (TTE) and transesophageal echocardiograms (TEE), a TTE-assessed E/e′ threshold that can be useful in predicting left atrial appendage (LAA) thrombus in patients with nonvalvular atrial fibrillation (NVAF). The retrospective derivation cohort was comprised of 297 patients with NVAF with TTE performed within 1 year of TEE. The validation cohort was comprised of 266 prospectively enrolled patients with TTE performed immediately prior to TEE. LAA thrombus was detected by TEE in 6.4 % of patients in ...
Source: The International Journal of Cardiovascular Imaging - May 30, 2016 Category: Radiology Source Type: research

Comparison of angiographic and IVUS derived coronary geometric reconstructions for evaluation of the association of hemodynamics with coronary artery disease progression
We present data from a small cohort of patients highlighting strong agreement between angiographic and IVUS derived coronary geometries, however, limited agreement is observed between computed WSS values and associations of WSS with CAD progression. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - May 26, 2016 Category: Radiology Source Type: research

Diagnostic accuracy of sub-mSv prospective ECG-triggering cardiac CT in young infant with complex congenital heart disease
The objective image noise (standard deviation, SD) and contrast to noise ratio (CNR) was calculated. The effective radiation dose from the prospective ECG-triggering mode was recorded and compared with the virtual conventional retrospective ECG-gating mode. The detection rate for the origin of coronary artery was calculated. All patients also underwent echocardiography before CCT examination. 81 patients had surgery and their preoperative CCT and echocardiography findings were compared with the surgical results and sensitivity, specificity, positive and negative predictive values and accuracy were calculated for separate c...
Source: The International Journal of Cardiovascular Imaging - May 25, 2016 Category: Radiology Source Type: research

Assessment of myocardial changes in athletes with native T1 mapping and cardiac functional evaluation using 3 T MRI
Abstract Intensive physical exercise leads to increases in left ventricular muscle mass and wall thickness. Cardiac magnetic resonance imaging allows the assessment of functional and morphological changes in an athlete’s heart. In addition, a native T1 mapping technique has been suggested as a non-contrast method to detect myocardial fibrosis. The aim of this study was to show the correlation between athletes’ cardiac modifications and myocardial fibrosis with a native T1 mapping technique. A total of 41 healthy non-athletic control subjects and 46 athletes underwent CMR imaging. After the functional ...
Source: The International Journal of Cardiovascular Imaging - May 25, 2016 Category: Radiology Source Type: research

Highly accelerated cardiac MRI using iterative SENSE reconstruction: initial clinical experience
Abstract To evaluate the qualitative and quantitative performance of an accelerated cardiovascular MRI (CMR) protocol that features iterative SENSE reconstruction and spatio-temporal L1-regularization (IS SENSE). Twenty consecutively recruited patients and 9 healthy volunteers were included. 2D steady state free precession cine images including 3-chamber, 4-chamber, and short axis slices were acquired using standard parallel imaging (GRAPPA, acceleration factor = 2), spatio-temporal undersampled TSENSE (acceleration factor = 4), and IS SENSE techniques (acceleration factor = 4). Acqu...
Source: The International Journal of Cardiovascular Imaging - May 25, 2016 Category: Radiology Source Type: research

Abnormalities in aortic properties: a potential link between left ventricular diastolic function and ventricular—aortic coupling in sickle cell disease
Abstract Left ventricular (LV) diastolic dysfunction in patients with sickle cell disease (SCD) is associated with increased mortality. However, its mechanisms are not well known, preventing the development of effective therapies. We hypothesized that patients with SCD have altered aortic properties despite normal blood pressure, which may contribute towards the development of diastolic dysfunction. We studied 31 stable adult patients with SCD (32 ± 7 years) and 12 healthy controls of similar age (29 ± 10 years) who underwent echocardiography and cardiovascular magnetic resonance...
Source: The International Journal of Cardiovascular Imaging - May 25, 2016 Category: Radiology Source Type: research

Quantitative assessment of the stent/scaffold strut embedment analysis by optical coherence tomography
Abstract The degree of stent/scaffold embedment could be a surrogate parameter of the vessel wall-stent/scaffold interaction and could have biological implications in the vascular response. We have developed a new specific software for the quantitative evaluation of embedment of struts by optical coherence tomography (OCT). In the present study, we described the algorithm of the embedment analysis and its reproducibility. The degree of embedment was evaluated as the ratio of the embedded part versus the whole strut height and subdivided into quartiles. The agreement and the inter- and intra-observer reproducibili...
Source: The International Journal of Cardiovascular Imaging - May 25, 2016 Category: Radiology Source Type: research

Long-term follow-up of renal arteries after radio-frequency catheter-based denervation using optical coherence tomography and angiography
Abstract Optical coherence tomography (OCT) imaging at the time of renal denervation (RDN) showed that procedure might cause spasm, intimal injury or thrombus formation. In the present study, we assessed the healing of renal arteries after RDN using OCT and renal angiography in long-term follow-up. OCT and renal angiography were performed in 12 patients (22 arteries) 18.41 ± 5.83 months after RNS. There were no adverse events or complications during the long-term follow-up. In ten patients (83 %), significant reductions of blood pressure was achieved without a change of the antihyperten...
Source: The International Journal of Cardiovascular Imaging - May 25, 2016 Category: Radiology Source Type: research

Left ventricular wall thickness in patients with hypertrophic cardiomyopathy: a comparison between cardiac magnetic resonance imaging and echocardiography
Abstract We assessed whether cardiac MRI (CMR) and echocardiography (echo) have significant differences measuring left ventricular (LV) wall thickness (WT) in hypertrophic cardiomyopathy (HCM) as performed in the clinical routine. Retrospectively identified, clinically diagnosed HCM patients with interventricular-septal (IVS) pattern hypertrophy who underwent CMR and echo within the same day were included. Left Ventricular WT was measured by CMR in two planes and compared to both echo and contrast echo (cecho). 72 subjects, mean age 50.7 ± 16.2 years, 68 % males. Interventricular s...
Source: The International Journal of Cardiovascular Imaging - May 25, 2016 Category: Radiology Source Type: research

Ex vivo comparison of angioscopy and histopathology for the evaluation of coronary plaque characteristics
Abstract The yellow plaque has been considered to be a vulnerable and high risk for acute coronary syndrome events but not fully evaluated. The aim of this study was to evaluate the relationship between angioscopic color grade and histological features in coronary autopsy specimens. We longitudinally sectioned 110 coronary arteries from 40 autopsy hearts with non-cardiovascular death. Harvested arteries were imaged with intravascular ultrasound to identify the focal plaque (plaque burden>50 %). An angioscopic examination of each focal plaque evaluated its color intensity as follows: 0 (white), 1 (light ye...
Source: The International Journal of Cardiovascular Imaging - May 25, 2016 Category: Radiology Source Type: research

Triple-barrelled aortic dissection with Stanford type A morphology
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - May 25, 2016 Category: Radiology Source Type: research

Biscuspid aortic valve syndrome: diversity and controversy
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - May 25, 2016 Category: Radiology Source Type: research

Prevalence of previously undiagnosed abdominal aortic aneurysms in the area of Como: the ComoCuore “looking for AAA” ultrasonography screening
Abstract The prognosis for abdominal aortic aneurysm (AAA) rupture is poor. Long-term follow-up of population-based randomized trials has demonstrated that ultrasound (US) screening for abdominal aortic aneurysms (AAAs) measuring 3 cm or greater decreases AAA-related mortality rates and is cost-effective. We though to prospectively perform during a 26-month period a limited US examination of the infrarenal aorta in volunteers of both gender aged 60–85 years without history of AAA living in the area of Como, Italy. From September 2010 to November 2013 ComoCuore, a no-profit nongovernmental associati...
Source: The International Journal of Cardiovascular Imaging - May 23, 2016 Category: Radiology Source Type: research

Association of cardiovascular disease risk factors with left ventricular mass, biventricular function, and the presence of silent myocardial infarction on cardiac MRI in an asymptomatic population
Abstract The purpose of this study was to evaluate the relationship between risk factors for cardiovascular disease (CVD) and cardiac mass and function on cardiac magnetic resonance imaging (MRI), and to investigate possible risk factors for silent myocardial infarction (SMI) in an asymptomatic Asian population. We included 647 asymptomatic subjects (485 males, mean age 54.8 ± 6.7 years; 162 females, mean age 55.2 ± 7.6 years) who underwent 1.5-T cardiac MRI during a health checkup. The association between biventricular functional parameters as evaluated on MRI and CVD ris...
Source: The International Journal of Cardiovascular Imaging - May 21, 2016 Category: Radiology Source Type: research

Left and right ventricular longitudinal strain-volume/area relationships in elite athletes
Abstract We propose a novel ultrasound approach with the primary aim of establishing the temporal relationship of structure and function in athletes of varying sporting demographics. 92 male athletes were studied [Group IA, (low static–low dynamic) (n = 20); Group IC, (low static–high dynamic) (n = 25); Group IIIA, (high static–low dynamic) (n = 21); Group IIIC, (high static–high dynamic) (n = 26)]. Conventional echocardiography of both the left ventricles (LV) and right ventricles (RV) was undertaken. An assessment of simultaneous lon...
Source: The International Journal of Cardiovascular Imaging - May 21, 2016 Category: Radiology Source Type: research

Traumatic aortic aneurysm diagnosed by computed tomography angiography in a 22-year-old man presenting with progressive dyspnea and dysphagia
We report a case of delayed traumatic aortic aneurysm that was diagnosed by computed tomography angiography on day 13 after a traffic accident. (Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - May 21, 2016 Category: Radiology Source Type: research

Automatic detection of aorto-femoral vessel trajectory from whole-body computed tomography angiography data sets
Abstract Extraction of the aorto-femoral vessel trajectory is important to utilize computed tomography angiography (CTA) in an integrated workflow of the image-guided work-up prior to trans-catheter aortic valve replacement (TAVR). The aim of this study was to develop a new, fully-automated technique for the extraction of the entire arterial access route from the femoral artery to the aortic root. An automatic vessel tracking algorithm was first used to find the centerline that connected the femoral accessing points and the aortic root. Subsequently, a deformable 3D-model fitting method was used to delineate the l...
Source: The International Journal of Cardiovascular Imaging - May 21, 2016 Category: Radiology Source Type: research

Prognostic value of cardiovascular MR imaging biomarkers on outcome in peripheral arterial disease: a 6-year follow-up pilot study
The objective of this pilot study was to explore the prognostic value of outcome of cardiovascular magnetic resonance (MR) imaging biomarkers in patients with symptomatic peripheral arterial disease (PAD) in comparison with traditional risk factors. Forty-two consecutive patients (mean age 64 ± 11 years, 22 men) referred for contrast-enhanced MR angiography (CE-MRA) were included. At baseline a comprehensive cardiovascular MRI examination was performed: CE-MRA of the infra-renal aorta and run-off vessels, carotid vessel wall imaging, cardiac cine imaging and aortic pulse wave velocity (PWV) assessment....
Source: The International Journal of Cardiovascular Imaging - May 21, 2016 Category: Radiology Source Type: research

Optical coherence tomography assessment ruled out the need for intervention in a ‘hazy’ angiographic image
(Source: The International Journal of Cardiovascular Imaging)
Source: The International Journal of Cardiovascular Imaging - May 20, 2016 Category: Radiology Source Type: research

Clinical, angiographic and procedural characteristics of longitudinal stent deformation
Abstract Recently, longitudinal stent deformation (LSD) has been reported increasingly. Even though the reported cases included almost all stent designs, most cases were seen in the Element™ stent design (Boston Scientific, Natick, MA, USA). It is considered that stent design, lesion and procedural characteristics play a role in the etiology of LSD. Yet, the effect of LSD on long-term clinical outcomes has not been studied well. Element stents implanted between January 2013 and April 2015 in our hospital were examined retrospectively. Patients were grouped into two according to the presence of LSD, and their...
Source: The International Journal of Cardiovascular Imaging - May 19, 2016 Category: Radiology Source Type: research

Quantitative diffusion-weighted magnetic resonance imaging in the assessment of myocardial fibrosis in hypertrophic cardiomyopathy compared with T1 mapping
Abstract To identify myocardial fibrosis in hypertrophic cardiomyopathy (HCM) subjects using quantitative cardiac diffusion-weighted imaging (DWI) and to compare its performance with native T1 mapping and extracellular volume (ECV). Thirty-eight HCM subjects (mean age, 53 ± 9 years) and 14 normal controls (mean age, 51 ± 8 years) underwent cardiac magnetic resonance imaging (CMRI) on a 3.0T magnetic resonance (MR) machine with DWI, T1 mapping and late gadolinium enhancement (LGE) imaging as the reference standard. The mean apparent diffusion coefficient (ADC), na...
Source: The International Journal of Cardiovascular Imaging - May 19, 2016 Category: Radiology Source Type: research

Use of a semi-automated cardiac segmentation tool improves reproducibility and speed of segmentation of contaminated right heart magnetic resonance angiography
Abstract Three-dimensional printing has an increasing number of clinical applications in pediatric cardiology. Time required for dataset segmentation and conversion to stereolithography (STL) format remains a significant limitation. We investigated the impact of semi-automated cardiovascular-specific segmentation software on time and reproducibility of segmentation. Magnetic resonance angiograms (MRAs) of 19 patients undergoing intervention for right ventricular outflow lesions were segmented to demonstrate the right heart. STLs were created by two independent clinicians using semi-automated cardiovascular segment...
Source: The International Journal of Cardiovascular Imaging - May 12, 2016 Category: Radiology Source Type: research

The role of experience in echocardiographic identification of location and extent of mitral valve prolapse with 2D and 3D echocardiography
Abstract Contradiction exists on the incremental value of two-dimensional (2D) and 3D transoesophageal echocardiography (TOE) over 2D transthoracic echocardiography (TTE) for the detection of mitral valve (MV) prolapse in readers with different echocardiographic experience. Twenty patients and five healthy persons were retrospectively identified who had undergone 2D-TTE, 2D-TOE and 3D-TOE. Fifteen (75 %) patients had surgical evidence of prolapse of the posterior MV leaflet and five patients (25 %) had a dilated MV annulus without prolapse. Three reader groups with different echocardiographic experti...
Source: The International Journal of Cardiovascular Imaging - May 11, 2016 Category: Radiology Source Type: research

Area strain from 3D speckle-tracking echocardiography as an independent predictor of early symptoms or ventricular dysfunction in asymptomatic severe mitral regurgitation with preserved ejection fraction
Abstract The indication for surgery in asymptomatic severe mitral regurgitation (SMR) with preserved left ventricular ejection fraction (LVEF) is controversial. We sought to study 3D myocardial mechanics in this population and test 3D-speckle tracking (3DST) parameters as possible predictors of events. 45 asymptomatic patients with SMR and LVEF>60 % and 20 control individuals without cardiac disease underwent 3DST echocardiography. MR group additionally underwent further clinical monitoring. Dyspnea, LVEF under 60 %, or admissions for heart failure were considered as events. When compared with con...
Source: The International Journal of Cardiovascular Imaging - May 9, 2016 Category: Radiology Source Type: research

Dyssynchronization reduces dynamic obstruction without affecting systolic function in patients with hypertrophic obstructive cardiomyopathy: a pilot study
Abstract Dyssynchrony from biventricular pacing (BiV) can reduce dynamic obstruction in hypertrophic obstructive cardiomyopathy (HOCM), but its consequences on the left ventricular (LV) systolic function are unknown. We evaluate changes in LV systolic function and assess the effectiveness of BiV in HOCM. Thirteen patients with HOCM (55 [33/75] years, five males) received a BiV device and underwent 2D transthoracic echocardiography before the implantation and at 12 months follow-up. Global longitudinal and radial strain, and the timing of segmental displacement curves were measured by commercial speckle-t...
Source: The International Journal of Cardiovascular Imaging - May 4, 2016 Category: Radiology Source Type: research

Automatic detection of carotid arteries in computed tomography angiography: a proof of concept protocol
Abstract Atherosclerosis is one of the leading causes of mortality in the western world. Computed tomography angiography (CTA) is the conventional imaging method used for pre-surgery assessment of the blood flow within the carotid vessel. In this paper, we present a proof of concept of a novel, fast and operator independent protocol for the automatic detection (seeding) of the carotid arteries in CTA in the thorax and upper neck region. The dataset is composed of 14 patients’ CTA images of the neck region. The performance of this method is compared with manual seeding by four trained operators. Inter-operato...
Source: The International Journal of Cardiovascular Imaging - May 3, 2016 Category: Radiology Source Type: research

Regional contribution to ventricular stroke volume is affected on the left side, but not on the right in patients with pulmonary hypertension
Abstract To develop more sensitive measures of impaired cardiac function in patients with pulmonary hypertension (PH), since detection of impaired right ventricular (RV) function is important in these patients. With the hypothesis that a change in septal function in patients with PH is associated with altered longitudinal and lateral function of both ventricles, as a compensatory mechanism, we quantified the contributions of these parameters to stroke volume (SV) in both ventricles using cardiac magnetic resonance (CMR). Seventeen patients (10 females) evaluated for PH underwent right heart catheterization (RHC) a...
Source: The International Journal of Cardiovascular Imaging - May 3, 2016 Category: Radiology Source Type: research

Sudden cardiac death from structural heart diseases in adults: imaging findings with cardiovascular computed tomography and magnetic resonance
Abstract Sudden cardiac death (SCD) is defined as the unexpected natural death from a cardiac cause within an hour of the onset of symptoms in the absence of any other cause. Although such a rapid course of death is mainly attributed to a cardiac arrhythmia, identification of structural heart disease by cardiovascular computed tomography (CCT) and cardiovascular magnetic resonance (CMR) imaging is important to predict the long-term risk of SCD. In adults, SCD most commonly results from coronary artery diseases, coronary artery anomalies, inherited cardiomyopathies, valvular heart diseases, myocarditis, and aortic ...
Source: The International Journal of Cardiovascular Imaging - May 2, 2016 Category: Radiology Source Type: research

Non-contrast cardiac CT immediately after percutaneous coronary intervention: does it predict the risk of left ventricular remodeling in patients with ST-elevation myocardial infarction?
Abstract To assess the clinical utility of non-contrast cardiac CT (CCT) immediately after successful percutaneous coronary intervention (PCI) for predicting the risk of left ventricle (LV) remodeling in the management of patients with acute myocardial infarction (AMI), 35 patients with AMI underwent non-contrast CCT immediately after PCI. Volume and transmural extent of myocardial delayed enhancement (DE) were assessed on non-contrast CCT. Serial echocardiography and serologic biomarkers were evaluated at baseline and at 2 and 12 months after AMI. Based on an increase in left ventricular end-diastolic v...
Source: The International Journal of Cardiovascular Imaging - May 2, 2016 Category: Radiology Source Type: research

Proximal culprit lesion and coronary artery occlusion independently predict the risk of microvascular obstruction in acute myocardial infarction
Abstract Microvascular obstruction (MO) and coronary flow have been independently described to have a high prognostic impact after acute myocardial infarction (AMI). Their interdependence has not been precisely elucidated, so far. Aim of this study was to investigate the impact of coronary flow on the occurrence of MO in patients with AMI. 336 patients with revascularized AMI were examined by cardiac magnetic resonance imaging. Patients were categorised into two groups based on the presence of MO. Procedural characteristics and marker of infarct size were analyzed. MO was present in 110 (33 %) and absent in...
Source: The International Journal of Cardiovascular Imaging - May 2, 2016 Category: Radiology Source Type: research

Determinants of image quality of rotational angiography for on-line assessment of frame geometry after transcatheter aortic valve implantation
Abstract To study the determinants of image quality of rotational angiography using dedicated research prototype software for motion compensation without rapid ventricular pacing after the implantation of four commercially available catheter-based valves. Prospective observational study including 179 consecutive patients who underwent transcatheter aortic valve implantation (TAVI) with either the Medtronic CoreValve (MCS), Edward-SAPIEN Valve (ESV), Boston Sadra Lotus (BSL) or Saint-Jude Portico Valve (SJP) in whom rotational angiography (R-angio) with motion compensation 3D image reconstruction was performed. Ima...
Source: The International Journal of Cardiovascular Imaging - May 2, 2016 Category: Radiology Source Type: research