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International Journal of Cardiovascular Imaging

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https://www.readbyqxmd.com/read/29464422/relationship-between-carotid-artery-atherosclerosis-and-bulb-geometry
#1
Sekou Gregg, Terry Y Li, Marie-France Hétu, Stephen C Pang, Paul Ewart, Amer M Johri
The carotid bifurcation is a common site of atherosclerotic plaque. Plaque development is thought to occur preferentially at geometrically predisposed areas such as arterial branch points. The aim of this study was to investigate the geometric and anatomical variables that contribute to the development of carotid plaque using three-dimensional (3D) ultrasound. Sixty-seven consecutive outpatients referred for elective coronary angiography underwent 3D carotid ultrasound scans for the purpose of carotid plaque quantification...
February 20, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29460124/accuracy-of-cardiac-ct-in-evaluating-severity-of-left-atrial-appendage-spontaneous-echo-contrast-comparison-with-transesophageal-echocardiography
#2
Chun-Li He, Zhao-Qian Wang, Chong-Fu Jia, Tao Cong, Liang Zhang, Zhi-Qiang Yang, Xi-Xia Sun, Si-Yao Sun
To investigate the capacity of biphasic cardiac CT (CCT) for qualitative and quantitative evaluation of different grades of left atrial appendage spontaneous echo contrast (LAASEC). The study included 267 inpatients with confirmed atrial fibrillation who underwent both CCT and transesophageal echocardiography (TEE). CT numbers for LAA, ascending aorta (AA), and left atrium (LA) were identified, and ROC curves for LAA, LAA/AA, and LAA/LA were plotted. With TEE as the standard, the sensitivity, specificity, PPV, NPV, and accuracy of CCT for LAASEC grade ≥ 1 were 60...
February 19, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29450742/focused-cardiac-ultrasound-as-a-predictor-of-readmission-in-acute-decompensated-heart-failure
#3
Luke J Laffin, Amit V Patel, Narayan Saha, Julian Barbat, James K Hall, Matthew Cain, Kishan Parikh, Jay Shah, Kirk T Spencer
Acute decompensated heart failure (ADHF) is a common reason for admission to the hospital, and readmission is frequent. Multiple factors contribute to rehospitalizations, but inadequate assessment of volume status leading to persistent congestion is an important factor. We sought to determine if focused cardiac ultrasound (FCU) of the inferior vena cava (IVC), as a surrogate of volume status, would predict readmission of ADHF patients after index hospitalization. Patients admitted with a primary diagnosis of ADHF were prospectively enrolled...
February 15, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29450741/utility-of-cardiac-computed-tomography-scanning-in-the-diagnosis-and-pre-operative-evaluation-of-patients-with-infective-endocarditis
#4
Jason R Sims, Nandan S Anavekar, Krishnaswamy Chandrasekaran, James M Steckelberg, Walter R Wilson, Bernard J Gersh, Larry M Baddour, Daniel C DeSimone
Transesophageal echocardiography (TEE) is the gold standard imaging study used in the diagnosis of infective endocarditis (IE). Computed tomography angiography (CTA) has undergone rapid advancement as a cardiac imaging technique and has previously shown promise in small non-randomized studies for evaluation of IE. We hypothesized that cardiac CTA would perform similarly to TEE in the detection of endocarditic lesions and that there would be no difference in clinical outcomes whether the coronary arteries were evaluated by CTA or invasive coronary angiography (ICA)...
February 15, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29445974/impact-of-acquisition-and-interpretation-on-total-inter-observer-variability-in-echocardiography-results-from-the-quality-assurance-program-of-the-staab-cohort-study
#5
Caroline Morbach, Götz Gelbrich, Margret Breunig, Theresa Tiffe, Martin Wagner, Peter U Heuschmann, Stefan Störk
Variability related to image acquisition and interpretation is an important issue of echocardiography in clinical trials. Nevertheless, there is no broadly accepted standard method for quality assessment of echocardiography in clinical research reports. We present analyses based on the echocardiography quality-assurance program of the ongoing STAAB cohort study (characteristics and course of heart failure stages A-B and determinants of progression). In 43 healthy individuals (mean age 50 ± 14 years; 18 females), duplicate echocardiography scans were acquired and mutually interpreted by one of three trained sonographers and an EACVI certified physician, respectively...
February 14, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29445973/is-heart-rate-response-a-reliable-marker-of-adenosine-induced-coronary-hyperemia
#6
Bhavik N Modi, Haseeb Rahman, Sara Abou Sherif, Howard Ellis, Kseniia Eruslanova, Amedeo Chiribiri, Divaka Perera
Introduction Growing evidence supports ischemia-guided management of chest pain, with invasive and non-invasive tests reliant upon achieving adenosine-induced coronary hyperemia (defined as increased blood flow to an organ's perfusion bed). In the non-invasive setting, surrogate markers of hyperemia, such as increases in heart rate, are often used, despite not being formally validated. We tested whether heart rate and other non-invasive indices are reliable markers of coronary hyperemia. Methods The first part involved Doppler flow-based validation of the best pressure-wire markers of hyperemia in 53 patients...
February 14, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29428969/efficient-workflow-for-automatic-segmentation-of-the-right-heart-based-on-2d-echocardiography
#7
Viacheslav V Danilov, Igor P Skirnevskiy, Olga M Gerget, Egor E Shelomentcev, Dmitrii Yu Kolpashchikov, Nikolay V Vasilyev
The present study aimed to present a workflow algorithm for automatic processing of 2D echocardiography images. The workflow was based on several sequential steps. For each step, we compared different approaches. Epicardial 2D echocardiography datasets were acquired during various open-chest beating-heart surgical procedures in three porcine hearts. We proposed a metric called the global index that is a weighted average of several accuracy coefficients, indices and the mean processing time. This metric allows the estimation of the speed and accuracy for processing each image...
February 10, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29417374/influence-of-different-dynamic-sporting-disciplines-on-right-ventricular-structure-and-function-in-elite-male-athletes
#8
Mohammad Qasem, Keith George, John Somauroo, Lynsey Forsythe, Benjamin Brown, David Oxborough
Our objective was to assess the influence of different levels of exposure to dynamic training on right ventricular (RV) structure, function and mechanics in elite male athletes. We recruited 492 male elite athletes aged between 18 and 30 years old. Athletes were grouped according to their sporting discipline using the Mitchell Classification as Low Dynamic (LD), Moderate Dynamic (MD) or High Dynamic (HD). All participants underwent 2D, Doppler, tissue Doppler and strain (ε) echocardiography with a focused and comprehensive assessment of the right heart...
February 7, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29404853/implantation-of-multiple-polytetrafluoroethylene-covered-stent-inside-drug-eluting-stent-to-rescue-purulent-coronary-artery-ectasia-with-giant-saccular-aneurysm
#9
Yusuke Namba, Toshiaki Yamanaka, Jun Ida, Takefumi Oka
A 79-year-old male with diabetes mellitus and old cerebral infarction was admitted to hospital due to fever and palpitation. Diagnosis of purulent pericarditis was established by pericardial effusion examination. The patient's general condition improved temporarily after drainage of the pericardial effusion. However, computed tomography demonstrated a saccular aneurysm arising from RCA have rapidly grown even larger, up to 63 × 51 mm on 7th hospital day. This indicated that the risk of rupture of the aneurysm was high...
February 5, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29397475/assessment-of-superficial-coronary-vessel-wall-deformation-and-stress-validation-of-in-silico-models-and-human-coronary-arteries-in-vivo
#10
Xinlei Wu, Clemens von Birgelen, Zehang Li, Su Zhang, Jiayue Huang, Fuyou Liang, Yingguang Li, William Wijns, Shengxian Tu
Cyclic biomechanical stress at the lumen-intima interface plays a crucial role in the rupture of coronary plaque. We performed a comprehensive assessment of a novel angiography-based method for four-dimensional (4D) dynamic assessment of superficial wall stress (SWS) and deformation with a total of 32 analyses in virtual stenosis models with equal lumen dimensions and 16 analyses in human coronary arteries in vivo. The in silico model analyses demonstrated that the SWS, derived by the proposed global displacement method without knowledge of plaque components or blood pressure, was comparable with the result calculated by traditional finite element method...
February 3, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29397474/editor-s-note-february-2018
#11
(no author information available yet)
No abstract text is available yet for this article.
February 3, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29396829/characteristics-of-aorto-iliofemoral-arterial-tree-according-to-aortic-valve-morphology-in-chinese-patients-considered-for-tavr
#12
Yuan Wang, Hasan Jilaihawi, Guanyuan Song, Moyang Wang, Bin Lv, Hao Wang, Guannan Niu, Zheng Zhou, Yongjian Wu
To characterize the anatomy of aorto-iliofemoral arterial tree according to aortic valve phenotype by CT in patients referred for transcatheter aortic valve replacement (TAVR). We retrospectively enrolled 215 patients screened for TAVR who underwent CT. Dimensions, calcification, vascular tortuosity index score and other putative risk features of 13 different regions were evaluated for bicuspid aortic valve (BAV) and tricuspid aortic valve (TAV) morphology. The study consisted of 44% BAVs with younger age than TAVs...
February 2, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29387972/effect-of-cardiac-resynchronization-therapy-on-mitral-valve-geometry-a-novel-aspect-as-reversed-mitral-remodeling
#13
Oguz Karaca, Beytullah Cakal, Mehmet Onur Omaygenc, Haci Murat Gunes, Filiz Kizilirmak, Sinem Deniz Cakal, Deniz Dilan Naki, Irfan Barutcu, Bilal Boztosun, Fethi Kilicaslan
Amelioration of the valvular geometry is a possible mechanism for mitral regurgitation (MR) improvement in patients receiving cardiac resynchronization therapy (CRT). We aimed to establish the precise definition, incidence, and predictors of reversed mitral remodeling (RMR), as well as the association with MR improvement and short-term CRT outcome. Ninety-five CRT recipients were retrospectively evaluated for the end-point of "MR response" defined as the absolute reduction in regurgitant volume (RegV) at 6 months...
January 31, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29383465/the-feasibility-of-tricuspid-annular-plane-systolic-excursion-performed-by-transesophageal-echocardiography-throughout-heart-surgery-and-its-interchangeability-with-transthoracic-echocardiography
#14
A Korshin, L Grønlykke, J C Nilsson, H Møller-Sørensen, N Ihlemann, M Kjøller, S Damgaard, P Lehnert, C Hassager, J Kjaergaard, H B Ravn
Tricuspid annular plane systolic excursion (TAPSE) is a robust measure of RV function, but the performance of transesophageal echocardiography (TEE) measured TAPSE during surgery is not well established. We aim to evaluate feasibility of various TEE views before, during and after surgery. Furthermore, we compare performance of individual TEE measurements depending on view and method (AMM- and M-mode as well as 2D) as well as TAPSE measured using TEE with transthoracic echocardiography (TTE) TAPSE. The study was conducted from January 2015 through September 2016...
January 30, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29349526/normal-pulmonary-artery-and-branch-pulmonary-artery-sizes-in-children
#15
S Bruce Greenberg, Sean M Lang, C Heath Gauss, Shelly Y Lensing, Sumera Ali, Karen A Lyons
To establish standards for pulmonary artery and branch pulmonary artery (PA and BPA) effective diameter (ED) and cross-sectional area (CSA) by using computed tomography (CT) data in children of a wide range of sizes and investigate the roundness of arteries. The ED (average of short and long axes) and CSA for the PA and BPA were measured using 1-mm collimation double-oblique reconstructions. Ordinary least squares regression was used to investigate models with various functional forms that related ED and CSA to patient size...
January 18, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29349525/value-of-ct-pulmonary-angiography-to-predict-short-term-outcome-in-patient-with-pulmonary-embolism
#16
Ahmed M Osman, Emad H Abdeldayem
To evaluate the role of CT pulmonary angiography (CTPA) in the assessment of pulmonary embolism (PE) severity and the related CT cardiac changes, reflecting the clinical status of the patients and predicting the outcome. A prospective study of 184 patients presented with suspicious acute PE. All patients underwent CTPA followed by ECHO. Pulmonary artery obstructive index (PAOI) using Qanadli Score was calculated and cardiac changes recorded. The patients' outcome was followed up for 30 days. Only 150 patients completed the study; 26...
January 18, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29340831/noninvasive-quantification-of-left-to-right-shunt-by-phase-contrast-magnetic-resonance-imaging-in-secundum-atrial-septal-defect-the-effects-of-breath-holding-and-comparison-with-invasive-oximetry
#17
Yuzo Yamasaki, Satoshi Kawanami, Takeshi Kamitani, Koji Sagiyama, Ichiro Sakamoto, Ken-Ichi Hiasa, Hidetake Yabuuchi, Michinobu Nagao, Hiroshi Honda
To investigate the effect of breath-holding on left-to-right shunts in patients with a secundum atrial septal defect (ASD). Thirty-five consecutive patients with secundum ASDs underwent right heart catheterization and invasive oximetry. Phase-contrast magnetic resonance imaging (MRI) was performed for the main pulmonary artery and ascending aorta. All measurements were obtained during free breathing (FB) (quiet breathing; no breath-hold), expiratory breath-hold (EBH), and inspiratory breath-hold (IBH). Pulmonary circulation flow (Qp) and systemic circulation flow (Qs) were calculated by multiplying the heart rate by the stroke volume...
January 16, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29327165/measurement-of-cardiac-valve-and-aortic-blood-flow-velocities-in-stroke-patients-a-comparison-of-4d-flow-mri-and-echocardiography
#18
Thomas Wehrum, Felix Guenther, Alexander Fuchs, Florian Schuchardt, Anja Hennemuth, Andreas Harloff
4D flow MRI is an emerging technique that allows quantification of 3D blood flow in vivo. However, comparisons with methods of blood velocity quantification used in clinical routine are sparse. Therefore, we compared velocity quantification using 4D flow MRI with transthoracic and transesophageal echocardiography at the mitral and aortic valves and the aorta. Forty-eight stroke patients (age 67.3 ± 15.0 years) were examined by 4D flow MRI. Blood flow velocities were assessed using standardized 2D analysis planes positioned in the mitral valve (MV), aortic valve (AV), ascending aorta (AAo), and descending aorta (DAo) and were compared with echocardiography...
January 11, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29327164/incremental-predictive-value-of-carotid-arterial-strain-in-patients-with-stroke
#19
Woo-In Yang, Ki-Woon Kang, Hye Young Lee, Chi-Young Shim, Geu-Ru Hong, Namsik Chung, Jong-Won Ha
Although increased carotid intima-media thickness (IMT) is a well-known risk factor for stroke, carotid IMT alone is not sufficient for risk stratification. The assessment of arterial properties using velocity vector imaging (VVI) represents a new method for quantifying structural changes. We sought to investigate the characteristics and the clinical value of carotid arterial mechanics using VVI in patients with stroke. Fifty male patients (55 ± 5 years) with stroke, 30 healthy age-matched volunteers (54 ± 8 years), and 30 healthy young male volunteers (29 ± 5 years) were evaluated...
January 11, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29322374/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
#20
Vedat Hekimsoy, Ergun Barıs Kaya, Ali Akdogan, Levent Sahiner, Banu Evranos, Ugur Canpolat, Kudret Aytemir, Necla Özer, Lale Tokgozoglu
Systemic 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...
January 10, 2018: International Journal of Cardiovascular Imaging
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