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International Journal of Cardiovascular Imaging

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https://www.readbyqxmd.com/read/30094566/association-with-right-atrial-strain-with-right-atrial-pressure-an-invasive-validation-study
#1
Leah M Wright, Nathan Dwyer, Sudhir Wahi, Thomas H Marwick
Echocardiographic assessment of right atrial pressure (RAP) from inferior vena cava (RAPIVC ) dimension may underestimate catheter-derived (RAPC ). As right atrial (RA) deformation, measured by speckle tracking, is preload-dependent, we hypothesized that RA strain may improve estimation of RAPC . Right atrial strain components [RA reservoir function (ƐR), peak RA contraction (ƐCT) and RA conduit function (ƐCD)] were measured in 125 of 175 patients who had echocardiography and invasive measures of RAP (median difference 1 day)...
August 9, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30094565/presence-of-aortic-root-vortex-formation-after-tavi-with-centera-confirmed-using-4d-flow-magnetic-resonance-imaging
#2
J Vendrik, E S Farag, N H L C de Hoon, J Kluin, J Baan
No abstract text is available yet for this article.
August 9, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30094564/risk-of-cardiac-tachyarrhythmia-in-patients-with-repaired-tetralogy-of-fallot-a-multicenter-cardiac-mri-based-study
#3
Niek E G Beurskens, Quint A J Hagdorn, Thomas M Gorter, Rolf M F Berger, Karin M Vermeulen, Joost P van Melle, Tjark E Ebels, George K Lui, Scott R Ceresnak, Frandics P Chan, Tineke P Willems
Cardiac tachyarrhythmias are the leading cause of morbidity and mortality in patients with repaired tetralogy of Fallot (TOF). We evaluated risk factors for sustained ventricular tachyarrhythmia (VT) and atrial tachyarrhythmia (ATA) in these patients. Patients (n = 319) who underwent cardiac magnetic resonance (CMR) imaging at two tertiary centers between 2007 and 2016 were assessed. Potential risk markers, based on history, cardiac magnetic resonance imaging (CMR), electrocardiography (ECG) and echocardiography, were analyzed for prediction of the primary endpoint of VT, and the secondary endpoint of ATA...
August 9, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30084106/radiation-exposure-and-coronary-artery-calcium-scans-in-the-society-for-heart-attack-prevention-and-eradication-cohort
#4
Amish A Patel, Jeffrey Fine, Morteza Naghavi, Matthew J Budoff
Coronary artery calcium (CAC) scoring is used in asymptomatic patients to improve their clinically predicted risk for future cardiovascular events. Current CT protocols seek to reduce radiation exposure without diminishing image quality. Reported radiation exposure remains widely variable (0.8-5 mSv) depending on the type of protocol. In this study, we report the radiation exposure of CAC scoring from the Society for Heart Attack Prevention and Eradication (SHAPE) early detection program cohort sites, which spanned multiple centers using 64-MDCT (multi-detector computed tomography) scanners...
August 6, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30078132/intra-thoracic-adiposity-is-associated-with-impaired-contractile-function-in-patients-with-coronary-artery-disease-a-cardiovascular-magnetic-resonance-imaging-study
#5
Anna Todd, Alessandro Satriano, Kate Fenwick, Naeem Merchant, Carmen P Lydell, Andrew G Howarth, Matthias G Friedrich, Todd J Anderson, Nowell M Fine, James A White
The influence of visceral adiposity on left ventricular remodeling following coronary artery disease (CAD)-related events has not been examined to date. Using magnetic resonance imaging (MRI) we explored intra-thoracic fat volume (ITFV) and strain-based markers of adverse remodeling in patients with CAD. Forty-seven patients with known CAD (25 with prior MI, 22 without prior MI) were studied. ITFV was quantified using previously validated imaging techniques. Myocardial strain was derived from cine MRI using a validated 3D feature-tracking (FT) software...
August 4, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30076516/reference-values-of-left-atrial-size-and-function-according-to-age-should-we-redefine-the-normal-upper-limits
#6
Flavio D'Ascenzi, Pietro Piu, Valentina Capone, Carlotta Sciaccaluga, Marco Solari, Sergio Mondillo, Michael Henein
Different cut-offs have been proposed for left atrial (LA) size. Furthermore, conflicting results have been reported about the influence of age on LA size and data on the impact of age on LA myocardial function are scanty. The aim of this study was to derive references values for LA size and function in healthy subjects and to evaluate the impact of age. We conducted a systematic literature search of MEDLINE database. We included only studies evaluating healthy subjects, with age ranged between 18 and 80 years...
August 3, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30073630/geometrical-and-functional-cardiac-changes-after-cardiac-surgery-a-phisiopatological-explanation-based-on-speckle-tracking
#7
Jose-Luis Moya Mur, Ana García Martín, Alberto García Lledó, Carla Lázaro Rivera, Luis Miguel Rincón Díaz, Javier Miguelena Hycka, Ilaria Boretti, Camila Gimaraes, Eduardo Casas Rojo, Jose-Julio Jiménez Nacher, Covadonga Fernández-Golfín, Jorge Rodríguez-Roda Stuart, José Luis Zamorano
Cardiac surgery induces geometrical and functional changes, which are not clearly explained. OBJECTIVE: to investigate the physiopathology of the heart after cardiac surgery using advanced techniques of echocardiography. Thirty patients undergoing cardiac surgery had echocardiographic study prior and after surgery. Left and right ventricular (RV) longitudinal displacement and strain were studied with speckle-tracking. Using longitudinal displacement, we defined a static longitudinal reference-point (sLRP) to which the other segments moved during systole...
August 2, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30066164/15-o-water-myocardial-flow-reserve-pet-and-ct-angiography-by-full-hybrid-pet-ct-as-a-potential-alternative-to-invasive-angiography
#8
Anders Thomassen, Poul-Erik Braad, Kasper T Pedersen, Henrik Petersen, Allan Johansen, Axel C P Diederichsen, Hans Mickley, Lisette O Jensen, Juhani Knuuti, Oke Gerke, Poul F Høilund-Carlsen
Combined myocardial flow reserve (MFR) by PET and CT coronary angiography (CTA) is a promising tool for assessment of coronary artery disease. Prior analyses of MFR/CTA has been performed as side-by-side interpretation, not as volume rendered, full hybrid analysis, with fused MFR/CTA. We aimed to: (i) establish a method for full hybrid analysis of MFR/CTA, (ii) validate the inter- and intra-observer reproducibility of MFR values, and (iii) determine the diagnostic value of side-by-side versus full hybrid MFR/CTA with 15-O-water PET...
July 31, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30062538/the-value-of-speckle-tracking-echocardiography-in-identifying-right-heart-dysfunction-in-patients-with-chronic-thromboembolic-pulmonary-hypertension
#9
Ai-Li Li, Zhen-Guo Zhai, Ya-Nan Zhai, Wan-Mu Xie, Jun Wan, Xin-Cao Tao
Right ventricular (RV) function is a significantly important factor in the determination of the prognosis of chronic thromboembolic pulmonary hypertension (CTEPH) patients. Speckle-tracking echocardiography (STE) is an angle-independent new technique for quantifying myocardial deformation that is capable of providing data on multiple parameters including longitudinal and transverse information of the myocardium. In the present study, we aimed to study the advantages of STE-derived parameters in identifying RV dysfunction in CTEPH patients...
July 30, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30062537/diagnostic-performance-of-machine-learning-based-computed-fractional-flow-reserve-ffr-derived-from-coronary-computed-tomography-angiography-for-the-assessment-of-myocardial-ischemia-verified-by-invasive-ffr
#10
Xiuhua Hu, Minglei Yang, Lu Han, Yujiao Du
To explore the diagnostic performance of a machine-learning-based (ML-based) computed fractional flow reserve (cFFR) derived from coronary computed tomography angiography (CCTA) in identifying ischemia-causing lesions verified by invasive FFR in catheter coronary angiography (ICA). We retrospectively studied 117 intermediate coronary artery lesions [40-80% diameter stenosis (DS)] from 105 patients (mean age 62 years, 32 female) who had undergone invasive FFR. CCTA images were used to compute cFFR values on the workstation...
July 30, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30062536/long-term-evaluation-of-electromechanical-delay-in-patients-with-atrial-septal-defect-after-transcatheter-closure
#11
Ahmet Öz, Emre Aruğaslan, Tufan Çınar, Muhammed Keskin, Mert Ilker Hayıroğlu, Şahin Avşar, Mehmet Baran Karataş, Berat Arıkan Aydın, Koray Demir, Barış Güngör, Osman Bolca
Some studies have been showed that electromechanical delay, which may pose an increased tendency to atrial fibrillation, may prolong in patients with various clinical conditions. In addition, the electromechanical delay in patients with secundum type atrial septal defect (ASD) compared to healthy people have been reported previously. Therefore, in the present study, we prospectively evaluated the mid-term and long-term effects of the transcatheter closure of secundum type ASD on the lateral atrial conduction time (PA), septal PA, tricuspid PA, left and right intra-atrial electromechanical delay (ILeft-EMD and IRight-EMD, respectively) and inter-atrial electromechanical delay (IA-EMD) measured by means of Doppler echocardiography...
July 30, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30062535/peak-left-atrial-strain-as-a-single-measure-for-the-non-invasive-assessment-of-left-ventricular-filling-pressures
#12
Amita Singh, Diego Medvedofsky, Anuj Mediratta, Bhavna Balaney, Eric Kruse, Boguslawa Ciszek, Atman P Shah, John E Blair, Francesco Maffessanti, Karima Addetia, Victor Mor-Avi, Roberto M Lang
Echocardiographic assessment of left ventricular (LV) filling pressures is performed using a multi-parametric algorithm. Left atrial (LA) strain was recently found to accurately classify the degree of diastolic dysfunction. We hypothesized that LA strain could be used as a stand-alone marker and sought to identify and test a cutoff, which would accurately detect elevated LV pressures. We studied 76 patients with a spectrum of LV function who underwent same-day echocardiogram and invasive left-heart catheterization...
July 30, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30056496/cmr-derived-extracellular-volume-fraction-ecv-in-asymptomatic-heart-transplant-recipients-correlations-with-clinical-features-and-myocardial-edema
#13
Yating Yuan, Jie Cai, Yue Cui, Jing Wang, Osamah Alwalid, Xuehua Shen, Yukun Cao, Yan Zou, Bo Liang
Myocardial interstitial expansion seems to be fundamental to the process of adverse left ventricular remodeling. Recent evidence has shown that the extracellular volume fraction (ECV) derived from cardiovascular magnetic resonance (CMR) can be used as a noninvasive method to quantify myocardial interstitial volume in a range of heart diseases. Our aim was to determine whether ECV is increased in asymptomatic orthotopic heart transplant (HTx) patients and its associations with clinical features and T2 values, the elevation of which usually suggests myocardial edema...
July 28, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30051301/coronary-artery-anomalies-on-preoperative-cardiac-ct-in-children-with-tetralogy-of-fallot-or-fallot-type-of-double-outlet-right-ventricle-comparison-with-surgical-findings
#14
Hyun Woo Goo
Coronary artery anomalies on preoperative cardiac CT have not been systematically compared with surgical findings in a large cohort of tetralogy of Fallot and Fallot type of double outlet right ventricle. This study was conducted to evaluate incidence and diagnostic accuracy of preoperative cardiac CT for identifying detailed coronary artery anatomy in these patients. Coronary artery anatomy on preoperative cardiac CT exams in 318 children with tetralogy of Fallot or Fallot type of double outlet right ventricle were reviewed and compared with surgical findings...
July 26, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30043233/correction-to-imaging-the-myocardial-ischemic-cascade
#15
Arthur E Stillman, Matthijs Oudkerk, David A Bluemke, Menko Jan de Boer, Jens Bremerich, Ernest V Garcia, Matthias Gutberlet, Pim van der Harst, W Gregory Hundley, Michael Jerosch-Herold, Dirkjan Kuijpers, Raymond Y Kwong, Eike Nagel, Stamatios Lerakis, John Oshinski, Jean-François Paul, Riemer H J A Slart, Vinod Thourani, Rozemarijn Vliegenthart, Bernd J Wintersperger
In the original publication of the article, the seventh author name "Matthias Gutberlet" has been misspelt.
July 24, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30039338/value-of-low-dose-dobutamine-stress-echocardiography-on-defining-true-severe-low-gradient-aortic-stenosis-in-patients-with-preserved-left-ventricular-ejection-fraction
#16
Dan Liu, Kai Hu, Eva Liebner, Frank Weidemann, Sebastian Herrmann, Georg Ertl, Stefan Frantz, Peter Nordbeck
Low-dose dobutamine stress echocardiography (DSE) is a valuable tool to distinguish true-severe (TS) from pseudo-severe (PS) low gradient aortic valve stenosis (LGAS) in patients with reduced left ventricular ejection fraction (LVEF). However, only scanty studies reported the clinical utility of DSE in differentiating TS-LGAS patients with preserved LVEF. We investigated the clinical utility of DSE in LGAS patients with preserved LVEF and the echocardiographic determinants suggestive of TS-LGAS. 130 consecutive LGAS patients [indexed aortic valve area (AVA) ≤ 0...
July 23, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30032415/coronary-sinus-flow-is-reduced-in-methamphetamine-abusers-a-transthoracic-echocardiographic-study
#17
Guang-Liang Wei, Xiao-Zhi Zheng, Ke-Qi Chen, Yun-Yan Shi, Lian-You Wang, Xu-Yan Tan
To compare the coronary sinus flow among healthy participants, methamphetamine abusers without chest pain and those with chest pain. One hundred and eight methamphetamine abusers: 53 ones without chest pain, 55 ones with chest pain, free of ascertained coronary artery disease, were enrolled in this study. A control group of 50 age-matched male healthy participants was studied for comparison. Standard 2D, flow and tissue Doppler echo with measurements of cardiac morphologic and functional indicators, coronary sinus flow, and inferior vena cava (IVC) ultrasound with measurements of the IVC dimensions and their collapsibility index were performed, respectively...
July 21, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30030671/the-effect-of-heart-rate-on-coronary-plaque-measurements-in-320-row-coronary-ct-angiography
#18
Masafumi Kidoh, Daisuke Utsunomiya, Yoshinori Funama, Daisuke Sakabe, Seitaro Oda, Takeshi Nakaura, Hideaki Yuki, Yasunori Nagayama, Kenichiro Hirata, Yuji Iyama, Tomohiro Namimoto, Yasuyuki Yamashita
Repeatability of quantitative assessment of atherosclerotic plaques is important for the accurate detection of high-risk plaques in coronary CT angiography (CTA). We assessed the effect of heart rate (HR) on plaque CT number using a coronary artery model and a cardiac phantom capable of simulating cardiac motion. The coronary artery model with luminal stenosis on a cardiac phantom was imaged with a simulated HR of 0, 50, 60, and 70 beats per minute using a 320-row CT scanner. We reconstructed CT images for cardiac diastolic phases (for 75% R-R interval) using filtered back projection (FBP), hybrid iterative reconstruction (AIDR3D), and model-based iterative reconstruction (FIRST)...
July 20, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30019123/correction-to-left-atrial-myocardial-dysfunction-after-chronic-abuse-of-anabolic-androgenic-steroids-a-speckle-tracking-echocardiography-analysis
#19
Antonello D'Andrea, Juri Radmilovic, Stefano Caselli, Andreina Carbone, Raffaella Scarafile, Simona Sperlongano, Giampaolo Tocci, Tiziana Formisano, Francesca Martone, Biagio Liccardo, Michele D'Alto, Eduardo Bossone, Maurizio Galderisi, Paolo Golino
In the original publication of the article, the seventh author name "Giampaolo Tocci" has been misspelt. The correct name is given in this.
July 17, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30019122/relationship-between-cardiovascular-risk-factors-and-myocardial-strain-values-of-both-ventricles-in-asymptomatic-asian-subjects-measurement-using-cardiovascular-magnetic-resonance-tissue-tracking
#20
Ji-Won Hwang, Min Jae Cha, Sung Mok Kim, Yiseul Kim, Yeon Hyeon Choe
The purpose of this study was to evaluate the association between myocardial deformation parameters and cardiovascular risk factors in asymptomatic Asian subjects and to provide reproducibility for deformation parameters of both ventricles using cardiovascular magnetic resonance (CMR) tissue tracking (TT). We enrolled 129 asymptomatic healthy adults who underwent CMR and assessed the cardiovascular risk factors in all individuals. All subjects had normal left ventricular systolic function. Commercial software was used to derive myocardial deformation parameters of both ventricles from short-axis cine images and long-axis cine images with two-, three-, and four-chamber views...
July 17, 2018: International Journal of Cardiovascular Imaging
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