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International Journal of Cardiovascular Imaging

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https://www.readbyqxmd.com/read/29043465/comparison-of-strain-imaging-techniques-in-crt-candidates-cmr-tagging-cmr-feature-tracking-and-speckle-tracking-echocardiography
#1
Wouter M van Everdingen, Alwin Zweerink, Robin Nijveldt, Odette A E Salden, Mathias Meine, Alexander H Maass, Kevin Vernooy, Frederik J De Lange, Albert C van Rossum, Pierre Croisille, Patrick Clarysse, Bastiaan Geelhoed, Michiel Rienstra, Isabelle C Van Gelder, Marc A Vos, Cornelis P Allaart, Maarten J Cramer
Parameters using myocardial strain analysis may predict response to cardiac resynchronization therapy (CRT). As the agreement between currently available strain imaging modalities is unknown, three different modalities were compared. Twenty-seven CRT-candidates, prospectively included in the MARC study, underwent cardiac magnetic resonance (CMR) imaging and echocardiographic examination. Left ventricular (LV) circumferential strain was analysed with CMR tagging (CMR-TAG), CMR feature tracking (CMR-FT), and speckle tracking echocardiography (STE)...
October 17, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29022127/genetic-influence-on-femoral-plaque-and-its-relationship-with-carotid-plaque-an-international-twin-study
#2
Pierleone Lucatelli, Corrado Fagnani, Adam Domonkos Tarnoki, David Laszlo Tarnoki, Beatrice Sacconi, Bence Fejer, Maria Antonietta Stazi, Miriam Salemi, Carlo Cirelli, Alessandro d'Adamo, Fabrizio Fanelli, Carlo Catalano, Pal Maurovich-Horvat, Adam L Jermendy, Gyorgy Jermendy, Bela Merkely, Andrea A Molnar, Giacomo Pucci, Giuseppe Schillaci, Filippo Farina, Giorgio Meneghetti, Claudio Baracchini, Emanuela Medda
To disentangle genetic and environmental influences on the development of femoral plaques using a population of adult twins. To evaluate the potential role of shared genetic and environmental factors in the co-occurrence of femoral and carotid plaques. The sample included 566 twins belonging to 164 monozygotic (MZ) and 119 dizygotic (DZ) twin pairs, who underwent peripheral arterial assessment by B-mode ultrasound in different centers. The variance in femoral plaques onset was due to genetic factors and the remaining 50% was explained by common (15%) and unique (35%) environmental factors...
October 11, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28988308/improving-the-role-of-echocardiography-in-studying-the-right-ventricle-of-repaired-tetralogy-of-fallot-patients-comparison-with-cardiac-magnetic-resonance
#3
Carolina D'Anna, Armando Caputi, Benedetta Natali, Benedetta Leonardi, Aurelio Secinaro, Gabriele Rinelli, Alessia Del Pasqua, Claudia Esposito, Adriano Carotti, Fabrizio Drago, Marcello Chinali
Right ventricular (RV) evaluation represents one of the major clinical tasks in the follow-up of repaired tetralogy of Fallot patients (rToF) with pulmonary valve regurgitation, as both severe RV dilatation and dysfunction are key factors in defining the need of pulmonary valve replacement. The aim of our study was to report the diagnostic accuracy of echocardiography in the identification of rToF patients with severely dilated and/or depressed RV as compared to cardiac magnetic resonance (CMR). Among our patients with rToF, a subgroup of 95 (17...
October 7, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28965166/comparative-assessment-of-three-drug-eluting-stents-with-different-platforms-but-with-the-same-biodegradable-polymer-and-the-drug-based-on-quantitative-coronary-angiography-and-optical-coherence-tomography-at-12-month-follow-up
#4
Robert J Gil, Jacek Bil, Jacek Legutko, Tomasz Pawłowski, Katarzyna E Gil, Dariusz Dudek, Ricardo A Costa
The aim of this study was to compare neointima proliferation in three drug-eluting stents (DES) produced by the same company (Balton, Poland) which are covered with a biodegradable polymer and elute sirolimus (concentration: 1.0 and 1.2 µg/mm(2)), but have different stent platforms and strut thickness: stainless steel Prolim(®) (115 µm) and BiOSS LIM(®) (120 µm) and cobalt-chromium Alex(®) (70 µm). We analyzed data of patients with quantitative coronary angiography (QCA) and optical coherence tomography (OCT) at 12 months from BiOSS LIM Registry, Prolim Registry and Alex OCT clinical trial...
September 30, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28965146/biventricular-vortex-ring-formation-corresponds-to-regions-of-highest-intraventricular-viscous-energy-loss-in-a-fontan-patient-analysis-by-4d-flow-mri
#5
Vivian P Kamphuis, Arno A W Roest, Jos J M Westenberg, Mohammed S M Elbaz
No abstract text is available yet for this article.
September 30, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28956200/magnetic-resonance-guided-renal-denervation-using-active-tracking-first-in-vivo-experience-in-swine
#6
F Bönner, S Haberkorn, P Behm, B Schnackenburg, S Krüger, S Weiss, C Meyer, M Kelm, M Neizel-Wittke
Interventional cardiovascular magnetic resonance (iCMR) might evolve as a technique to improve procedural success rates in cardiovascular interventions by combining intraprocedural guidance and simultaneous lesion imaging. The objective of the present study was to prove feasibility and estimate safety of renal sympathetic denervation guided by real-time iCMR using active tracking. Six pigs were examined in a 1.5 T MRI-System (Achieva, Philips Healthcare, Best, Netherlands) equipped with non-invasive hemodynamic control and in-room monitors displaying an interventional software platform [Interventional MRI Suite (iSuite), Philips Research, Hamburg, Germany]...
September 27, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28952037/intravascular-ultrasound-assessment-of-the-effect-of-laser-energy-on-the-arterial-wall-during-the-treatment-of-femoro-popliteal-lesions-a-clirpath-excimer-laser-system-to-enlarge-lumen-openings-cello-registry-study
#7
Kayode O Kuku, Hector M Garcia-Garcia, Edward Koifman, Alexandre H Kajita, Sameer Desale, Viana Azizi, Gebremedhin Melaku, Anh Bui, Yael F Meirovich, Solomon Beyene, Aaphtaab Dheendsa, Blaine Schneider, Ron Waksman
The CliRpath Excimer Laser System to Enlarge Lumen Openings (CELLO) registry included patients treated with modified excimer laser catheters for the endovascular treatment of peripheral artery disease affecting the superficial femoral artery (SFA) and proximal popliteal artery. The aim of this study was to assess, via intravascular ultrasound (IVUS) the dissections in the vessel wall following treatment with the laser catheters. IVUS grayscale images from the CELLO registry were systematically reviewed for dissections in the treated vessel segments by two investigators...
September 26, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28936576/improvement-of-continuous-subcutaneous-insulin-infusion-on-patients-with-type-2-diabetes-mellitus-by-3-dimensional-speckle-tracking-echocardiography
#8
Hong-Xia Luo, Xiao-Ling Zhou, Hong-Ju Kou, Xian-Wei Ni, Qing Wu, Chun-Peng Zou, Dao-Zhu Wu, Yong-Fang Liu
Three-dimensional speckle tracking echocardiography (3D-STE) was used to evaluate the improvement of continuous subcutaneous insulin infusion on the left ventricular (LV) systolic function of patients with type 2 diabetes mellitu (T2DM). We recruited T2DM patients (38 cases, diabetic group) and healthy volunteers (35 cases, control group) to collect LV full volume imaging. TomTec software was used for calculating LV global longitudinal strain (LVGLS), global circumferential strain (LVGCS), peak twist (LVTW), peak apical rotation (LVPAR), ejection fraction (LVEF), and torsion (LVT)...
September 21, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28929382/serial-assessment-of-left-ventricular-morphology-and-function-in-a-rodent-model-of-ischemic-cardiomyopathy
#9
Vesselina Ferferieva, Nicholas D'Elia, Brecht Heyde, Petr Otahal, Frank Rademakers, Jan D'hooge
Left ventricular remodelling (LVr) occurs post myocardial infarction (MI), predisposing people to heart failure (HF). LV mechanics and morphology are important in this process. We hence sort to characterize LV mechanics and geometry in a post-MI rodent model. Thirty-two male Sprague-Dawley rats (150-200 g) sustained MI (n = 24) or sham (Sham; n = 8) surgery. In another six sham rats invasive blood pressure measurements were performed. Ultrasound imaging was done at baseline, and 1, 3, 7, 14, 30 and 60 days following surgery, and LV mechanics and morphology assessed...
September 19, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28921413/honeycomb-like-appearance-on-optical-coherence-tomography-in-right-coronary-artery
#10
Praveen K Gupta, Ajith A Pillai, Santhosh Satheesh, Raja Selvaraj, Jayaram Balachander
No abstract text is available yet for this article.
September 18, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28918608/unorthodox-right-parasternal-imaging-saves-the-day
#11
Mohsin Khan, Eric Weiss, Paul Bernstein, Khawaja Afzal Ammar
No abstract text is available yet for this article.
September 16, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28918444/left-atrial-volume-computed-by-3d-rotational-angiography-best-predicts-atrial-fibrillation-recurrence-after-circumferential-pulmonary-vein-isolation
#12
Teresa Strisciuglio, Giuseppe Di Gioia, Sofia Chatzikyriakou, Etel Silva Garcia, Emanuele Barbato, Peter Geelen, Tom De Potter
Left atrium (LA) size is a well-studied predictor of atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI). Yet, there is still little agreement on the best imaging technique to size the LA, and on the most appropriate sizing parameter. Volumetric assessment of LA with three-dimensional rotational angiography (3DRA LA volume index) might be a valid alternative to the commonly used transthoracic echocardiography (TTE LA volume index). The aim of our study was to investigate whether LA volume by 3DRA at the time of PVI is able to predict the risk of atrial fibrillation recurrence...
September 16, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28905233/gated-thoracic-magnetic-resonance-angiography-at-3t-noncontrast-versus-blood-pool-contrast
#13
Chengcheng Zhu, Henrik Haraldsson, Kimberly Kallianos, Liang Ge, Elaine Tseng, Travis Henry, David Saloner, Michael D Hope
Both noncontrast and contrast-enhanced approaches to gated thoracic magnetic resonance angiography (MRA) for aortic root evaluation have been reported at 3T. We compare qualitative and quantitative image quality measures for the two approaches, and assess the reproducibility of standard aortic measurements. Respiratory and cardiac gated MRA of the chest was performed at 3T in 45 patients: 23 after administration of iron-based blood pool contrast, and 22 without contrast. Image quality was assessed with a 5-point Likert scale, vessel lumen-to-muscle contrast ratios, and vessel wall sharpness...
September 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28900781/submillisievert-imaging-protocol-using-full-reconstruction-and-advanced-patient-motion-correction-in-320-row-area-detector-coronary-ct-angiography
#14
Yuko Kawaguchi, Shinichiro Fujimoto, Kazuhisa Takamura, Etsuro Kato, Shoko Suda, Rie Matsumori, Makoto Hiki, Kanako K Kumamaru, Hiroyuki Daida
Radiation exposure remains a concern in the use of coronary CT angiography (CCTA). Full reconstruction (Full) and reconstruction using advanced patient motion correction (APMC) could obtain a lower radiation dose using low tube current scanning in a 320-row Area Detector CT (320-ADCT). The radiation dose for an imaging protocol using Full and APMC in daily practice was estimated. A total of 209 patients who underwent CCTA in 1 rotation scanning with 100 kv and adaptive iterative dose reduction 3D in 320-ADCT were enrolled...
September 12, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28889354/predictive-value-of-syntax-score-ii-for-clinical-outcomes-in-cardiogenic-shock-underwent-primary-percutaneous-coronary-intervention-a-pilot-study
#15
Mert İlker Hayıroğlu, Muhammed Keskin, Ahmet Okan Uzun, Emrah Bozbeyoğlu, Özlem Yıldırımtürk, Ömer Kozan, Seçkin Pehlivanoğlu
SYNTAX Score II (SSII) connects clinical variables with coronary anatomy. We investigated the prognostic value of SSII in patients with ST segment elevated myocardial infarction (STEMI) complicated with cardiogenic shock treated with primary percutaneous coronary intervention (PPCI). In this retrospective analysis, we evaluated the in-hospital prognostic impact of SSII on 492 patients with STEMI complicated with cardiogenic shock treated with PPCI. Patients were stratified by tertiles of SSII, in-hospital clinical outcomes were compared between those groups...
September 9, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28889326/myocardial-contractile-patterns-predict-future-cardiac-events-in-sarcoidosis
#16
Jian Chen, Juan Lei, Ernest Scalzetti, Mary McGrath, David Feiglin, Robert Voelker, Jingfeng Wang, Michael C Iannuzzi, Kan Liu
The poor prognosis of cardiac sarcoidosis (CS) underscores the need for risk stratification. We evaluated 84 consecutive sarcoidosis patients who were referred for echocardiographic studies for cardiac symptoms or abnormal electrocardiograms. In 54 patients without previous diagnosis of CS or other known structural heart disease, 13 reached endpoints during (median) 24 months follow up. Significantly impaired peak systolic longitudinal strain in their original echocardiograms were identified in 13 of 17 left ventricular segments, clustering in the free wall, interventricular septum and apex...
September 9, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28884401/4d-flow-image-quality-with-blood-pool-contrast-a-comparison-of-gadofosveset-trisodium-and-ferumoxytol
#17
Kanae Mukai, Nicholas S Burris, Vaikom S Mahadevan, Elyse D Foster, Karen G Ordovas, Michael D Hope
To evaluate the effect of MRI blood pool contrast agent on 4D flow image quality and ventricular volume measurements. Adult patients referred for clinical cardiac MRI (n = 22) were imaged with 4D flow. Patients with renal failure (n = 10) received ferumoxytol, and the remainder (n = 12) received gadofosveset trisodium. Image quality was assessed with (1) signal-to-noise ratio (SNR); (2) contrast-to-noise ratio (CNR); and (3) 5-point Likert scale based on endocardial border definition (1 = none; 2 = partial but unable to visualize; 3 = able to roughly estimate; 4 = visible for most of the cardiac cycle; 5 = excellent definition)...
September 8, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28871348/characterization-of-complex-flow-patterns-in-the-ascending-aorta-in-patients-with-aortic-regurgitation-using-conventional-phase-contrast-velocity-mri
#18
Odd Bech-Hanssen, Frida Svensson, Christian L Polte, Åse A Johnsson, Sinsia A Gao, Kerstin M Lagerstrand
Ascending aorta (AA) flow displacement (FD) is a surrogate for increased wall shear stress. We prospectively studied the flow profile in the AA in patients with aortic regurgitation (AR), to identify predictors of FD and investigate whether magnetic resonance imaging (MRI) phase-contrast flow rate curves (PC-FRC) contain quantitative information related to FD. Forty patients with chronic moderate (n = 14) or severe (n = 26) AR (21 (53%) with bicuspid aortic valve) and 22 controls were investigated. FD was determined from phase-contrast velocity profiles and defined as the distance between the center of the lumen and the "center of velocity" of the peak systolic forward flow or the peak diastolic negative flow, normalized to the lumen radius...
September 4, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28856524/4d-modelling-for-rapid-assessment-of-biventricular-function-in-congenital-heart-disease
#19
K Gilbert, B Pontre, C J Occleshaw, B R Cowan, A Suinesiaputra, A A Young
Although more patients with congenital heart disease (CHD) are now living longer due to better surgical interventions, they require regular imaging to monitor cardiac performance. There is a need for robust clinical tools which can accurately assess cardiac function of both the left and right ventricles in these patients. We have developed methods to rapidly quantify 4D (3D + time) biventricular function from standard cardiac MRI examinations. A finite element model was interactively customized to patient images using guide-point modelling...
August 30, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28849419/myocardial-t1-mapping-and-extracellular-volume-quantification-an-overview-of-technical-and-biological-confounders
#20
Stefan K Piechnik, Michael Jerosch-Herold
Novel tissue biomarkers based on the spin-lattice relaxation time T1, a fundamental property in the theory of magnetic resonance physics, have emerged as a new approach for myocardial tissue characterization with many validated clinical applications. This article is intended as an overview of the physical and physiological mechanisms underlying the interpretation and the accuracy of any practical measurement of T1, or derived biomarkers such as extravascular volume fraction, and also includes a discussion of potential pitfalls...
August 28, 2017: International Journal of Cardiovascular Imaging
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