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International Journal of Cardiovascular Imaging

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https://www.readbyqxmd.com/read/28444549/comparison-of-in-stent-neoatherosclerosis-and-tissue-characteristics-between-early-and-late-in-stent-restenosis-in-second-generation-drug-eluting-stents-an-optical-coherence-tomography-study
#1
Mahmoud Sabbah, Kazushige Kadota, Azza El-Eraky, Hanan M Kamal, Ahmed-Tageldien Abdellah, Ahmed El Hawary
Optical frequency domain imaging (OFDI) was utilized to compare the prevalence of neoatherosclerosis (NA) and morphological characteristics of the neointimal tissue in second generation drug eluting stent (G2-DES)-treated lesions between early (<1 year, E-ISR) and late (>1 year, L-ISR) in-stent restenotic phases. Data comparing NA and in vivo tissue characteristics between early and late in-stent restenosis (ISR) after implantation of G2-DES is limited. An OFDI analysis was performed in 50 G2-DESs {35 everolimus-eluting stent [22 cobalt-chromium (CoCr), 13 platinum-chromium (PtCr)], and 15 biolimus-eluting stent [BES]} ISR lesions (46 consecutive patients) undergoing target lesion revascularization, classified as E-ISR (n = 22 lesion) and L-ISR (n = 28 lesion)...
April 25, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28439734/myocardial-salvage-after-primary-percutaneous-coronary-intervention-in-patients-with-st-elevation-myocardial-infarction-presenting-early-versus-late-after-symptom-onset
#2
Thomas Stiermaier, Ingo Eitel, Suzanne de Waha, Janine Pöss, Georg Fuernau, Holger Thiele, Steffen Desch
Primary percutaneous coronary intervention (PCI) is the treatment of choice in patients with ST-elevation myocardial infarction (STEMI) presenting within 12 h of symptom onset. A benefit in the subacute stage is less clear. The aim of the present analysis was to compare myocardial salvage and infarct size between patients with early and late reperfusion after STEMI. We compared cardiac magnetic resonance (CMR) data from a randomized controlled trial (RCT) in STEMI patients presenting within 12 h (n = 695) and a RCT of subacute STEMI patients presenting between 12 and 48 h (n = 93) after symptom onset...
April 24, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28432452/fluorescent-angioscopic-imaging-of-calcium-phosphate-tribasic-precursor-of-hydroxyapatite-the-major-calcium-deposit-in-human-coronary-plaques
#3
Takanobu Kobayashi, Osamu Nakagawa, Seiichiro Shirai, Ei Shimoyama, Nobuyuki Hiruta, Yasumi Uchida
Coronary calcification is a risk factor for ischemic heart disease. Hydroxyapatite that is formed by polymerization from calcium phosphate tribasic (CPT) is the major constituent of coronary calcium deposits. If CPT could be visualized, coronary calcification could be predicted and prevented. We discovered that when CPT and collagen I, the main constituent of collagen fibers, are mixed with lac dye (LD) and then exposed to fluorescent light excited at 345 ± 15 nm and emitted at 420 nm, a purple fluorescence that is characteristic of CPT only is elicited...
April 21, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28424890/left-atrial-electromechanical-conduction-time-predicts-atrial-fibrillation-in-patients-with-mitral-stenosis-a-5-year-follow-up-speckle-tracking-echocardiography-study
#4
Ozkan Candan, Cetin Gecmen, Arzu Kalayci, Cem Dogan, Emrah Bayam, Mehmet Ozkan
Prolonged left atrial electromechanical conduction time is related with atrial electrical remodeling, and is predictive of the development of atrial fibrillation. The aim of our study was to examine whether left atrial electromechanical conduction time (EMT) and left atrial strain as measured by speckle tracking echocardiography (STE) are predictors for the development of atrial fibrillation (AF) in patients with mitral stenosis (MS) at 5-year follow-up. A total of 81 patients (61% females; mean age 38.1 ± 12...
April 19, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28421305/the-utility-of-global-longitudinal-strain-in-the-identification-of-prior-myocardial-infarction-in-patients-with-preserved-left-ventricular-ejection-fraction
#5
Graham J Fent, Pankaj Garg, James R J Foley, Laura E Dobson, Tarique A Musa, Bara Erhayiem, John P Greenwood, Sven Plein, Peter P Swoboda
Prior myocardial infarction (MI) is associated with increased mortality and is prevalent in certain high risk patient groups. Electrocardiogram may be used in diagnosis, however, sensitivity is limited, thus non-invasive imaging techniques may improve diagnosis. We investigated whether global longitudinal strain (GLS) and longitudinal strain parameters are reduced in patients with prior MI but preserved left ventricular ejection fraction (LVEF). The study included 40 clinical patients with prior MI occurring >3 months previously (defined as subendocardial hyperenhancement on late Gadolinium enhancement imaging) with LVEF ≥ 55% and 40 controls matched for age and LVEF...
April 18, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28409259/agreement-of-tricuspid-annular-systolic-excursion-measurement-between-transthoracic-and-transesophageal-echocardiography-in-the-perioperative-setting
#6
Anna Flo Forner, Elham Hasheminejad, Sergi Sabate, Michael A Ackermann, Edwin W Turton, Joerg Ender
OBJECTIVE: The aim of our study was to evaluate the level of agreement between tricuspid annular plane systolic excursion (TAPSE) measured by transthoracic echocardiography (TTE) and TAPSE measured using transesophageal echocardiography (TEE) in anesthetized patients. MATERIALS AND METHODS: Thirty patients scheduled for elective cardiac surgery were prospectively studied. Shortly after induction of anesthesia before the operation, TAPSE was measured by TTE using M-mode in apical 4chamber view (4CH) and by TEE in six different views: using 2D echocardiography in midesophageal (ME) 4CH view, using M-mode in deep transgastric right ventricle (dTG RV) view at 0° and dTG RV longaxis view (LAX) as well as using anatomical M-mode (AM-mode) in ME 4CH, dTG RV at 0° and dTG RV LAX views...
April 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28409258/impact-of-knowledge-based-iterative-model-reconstruction-on-myocardial-late-iodine-enhancement-in-computed-tomography-and-comparison-with-cardiac-magnetic-resonance
#7
Yuki Tanabe, Teruhito Kido, Akira Kurata, Naoki Fukuyama, Takahiro Yokoi, Tomoyuki Kido, Teruyoshi Uetani, Mani Vembar, Amar Dhanantwari, Shinichi Tokuyasu, Natsumi Yamashita, Teruhito Mochizuki
We evaluated the image quality and diagnostic performance of late iodine enhancement computed tomography (LIE-CT) with knowledge-based iterative model reconstruction (IMR) for the detection of myocardial infarction (MI) in comparison with late gadolinium enhancement magnetic resonance imaging (LGE-MRI). The study investigated 35 patients who underwent a comprehensive cardiac CT protocol and LGE-MRI for the assessment of coronary artery disease. The CT protocol consisted of stress dynamic myocardial CT perfusion, coronary CT angiography (CTA) and LIE-CT using 256-slice CT...
April 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28396960/association-of-b-type-natriuretic-peptide-with-coronary-plaque-subtypes-detected-by-coronary-computed-tomography-angiography-in-patients-with-stable-chest-pain
#8
Yuhai Yang, Caiqin Li, Lei Zhao
Increased B-type natriuretic peptide (BNP) level has been suggested to improve clinical predictions of coronary events and all-cause mortality. We aimed to analyze the relationship between BNP levels and coronary plaque subtypes as detected by coronary computed tomography angiography (CCTA). 402 subjects undergoing CCTA were enrolled. The relationship between increased levels of BNP and plaque subtypes was tested using multivariable linear and logistic regression analysis. Plaques were categorized into subtypes of calcified, mixed and non-calcified...
April 10, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28391581/contribution-of-mitral-valve-leaflet-length-and-septal-wall-thickness-to-outflow-tract-obstruction-in-patients-with-hypertrophic-cardiomyopathy
#9
Kareem Morant, Yoko Mikami, Immaculate Nevis, David McCarty, John Stirrat, David Scholl, Martin Rajchl, Peter Giannoccaro, Louis Kolman, Bobby Heydari, Carmen Lydell, Andrew Howarth, Andrew Grant, James A White
We sought to examine whether elongation of the mitral valve leaflets in patients with hypertrophic cardiomyopathy (HCM) is synergistic to septal wall thickness (SWT) in the development of left ventricular outflow tract obstruction (LVOTO). HCM is a common genetic cardiac disease characterized by asymmetric septal hypertrophy and predisposition towards LVOTO. It has been reported that elongation of the mitral valve leaflets may be a primary phenotypic feature and contribute to LVOTO. However, the relative contribution of this finding versus SWT has not been studied...
April 8, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28391580/two-cases-of-quadricuspid-aortic-valve-diagnosed-via-coronary-ct-angiogram
#10
Yonathan Litwok, Steven Savella, Shahryar Saba, Amgad Makaryus, John Makaryus
No abstract text is available yet for this article.
April 8, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28389968/predictors-of-left-ventricular-remodeling-after-st-elevation-myocardial-infarction
#11
Tom Hendriks, Minke H T Hartman, Pieter J J Vlaar, Niek H J Prakken, Yldau M Y van der Ende, Chris P H Lexis, Dirk J van Veldhuisen, Iwan C C van der Horst, Erik Lipsic, Robin Nijveldt, Pim van der Harst
Adverse left ventricular (LV) remodeling after acute ST-elevation myocardial infarction (STEMI) is associated with morbidity and mortality. We studied clinical, biochemical and angiographic determinants of LV end diastolic volume index (LVEDVi), end systolic volume index (LVESVi) and mass index (LVMi) as global LV remodeling parameters 4 months after STEMI, as well as end diastolic wall thickness (EDWT) and end systolic wall thickness (ESWT) of the non-infarcted myocardium, as compensatory remote LV remodeling parameters...
April 7, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28378162/coronary-flow-reserve-in-mitral-stenosis-before-and-after-percutaneous-balloon-mitral-valvuloplasty
#12
Ragab A Mahfouz, Mohammad Gouda, Waleed Elawdy, Ashraf Dewedar
We aimed to evaluate the coronary flow reserve (CFR) before and after percutaneous balloon mitral valvuloplasty (PBMV) in patients with mitral stenosis (MS) and its association to clinical events. A prospective study included 45 patients with mitral stenosis candidate for PBMV (age 38 ± 19 years, 27 were females) and 20 with matched age and sex, healthy controls were included in the study. Noninvasive CFR was measured using transthoracic echocardiography and utilizing adenosine stress echocardiography (0...
April 4, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28365819/strut-protrusion-and-shape-impact-on-endothelial-shear-stress-insights-from-pre-clinical-study-comparing-mirage-and-absorb-bioresorbable-scaffolds
#13
Erhan Tenekecioglu, Yohei Sotomi, Ryo Torii, Christos Bourantas, Yosuke Miyazaki, Carlos Collet, Tom Crake, Solomon Su, Yoshinobu Onuma, Patrick W Serruys
Protrusion of scaffold struts is related with local coronary flow dynamics that can promote scaffold restenosis and thrombosis. That fact has prompted us to investigate in vivo the protrusion status of different types of scaffolds and their relationship with endothelial shear stress (ESS) distributions. Six Absorb everolimus-eluting Bioresorbable Vascular Scaffolds (Absorb, Abbott Vascular) and 11 Mirage sirolimus-eluting Bioresorbable Microfiber Scaffolds (Mirage, Manli Cardiology) were implanted in coronaries of eight mini pigs...
April 1, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28365818/massive-floating-thrombus-in-the-ascending-aorta
#14
Johann Auer, Gerhard Vorreiter, Franz Gurtner, Carina Primus, Robert Berent
No abstract text is available yet for this article.
April 1, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28364178/optimizing-left-anterior-oblique-lao-caudal-imaging-in-coronary-angiography-using-the-taguchi-method-a-phantom-study-with-clinical-verification
#15
Lung-Fa Pan, Kuang Hua Chu, Hai-Feng Sher, Lung-Kwang Pan
The aim of this work tried to optimize the spider view of the coronary angiograph for the clinical diagnosis of cardiac artery disease by cardiologists. A qualified spider view in coronary angiography must be exactly a "quasi-spider" image, which can help to diagnose a lesion in left main coronary artery and related regions. Coronary artery phantom was placed in a 75 mm-thick acrylic box to model a 70 kg human thorax. Eighteen groups of various combinations of operating factors of the X-ray facility were organized based on a Taguchi analysis...
March 31, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28364177/magnetic-resonance-imaging-for-characterizing-myocardial-diseases
#16
REVIEW
Maythem Saeed, Hui Liu, Chang-Hong Liang, Mark W Wilson
The National Institute of Health defined cardiomyopathy as diseases of the heart muscle. These myocardial diseases have different etiology, structure and treatment. This review highlights the key imaging features of different myocardial diseases. It provides information on myocardial structure/orientation, perfusion, function and viability in diseases related to cardiomyopathy. The standard cardiac magnetic resonance imaging (MRI) sequences can reveal insight on left ventricular (LV) mass, volumes and regional contractile function in all types of cardiomyopathy diseases...
March 31, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28364176/reproducibility-of-echocardiographic-assessment-of-2d-derived-longitudinal-strain-parameters-in-a-population-based-study-the-stanislas-cohort-study
#17
Stefano Coiro, Olivier Huttin, Erwan Bozec, Christine Selton-Suty, Zohra Lamiral, Erberto Carluccio, Annie Trinh, Alan G Fraser, Giuseppe Ambrosio, Patrick Rossignol, Faiez Zannad, Nicolas Girerd
Global peak systolic longitudinal strain (PLS) derived from speckle tracking echocardiography (STE) is a widely used left ventricular deformation parameter. Modern ultrasound systems with improved temporal resolution and new software now allow automated multilayer analysis; however, there is limited evidence regarding its reproducibility. We performed intra- and inter-observer analyses within a population-based cohort study using conventional quantitative strain analysis (GE Healthcare). Fifty patients (49 ± 14 years) were randomly selected among the fourth visit of the STANISLAS Cohort...
March 31, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28364175/evaluation-of-radiological-risk-during-coronary-angioplasty-procedures-comparison-of-transradial-and-transfemoral-approaches
#18
Piotr Iwachow, Izabela Miechowicz, Piotr Kałmucki, Beata Dziki, Andrzej Szyszka, Artur Baszko, Tomasz Siminiak
Increasing operator experience and newer available interventional cardiology devices require reassessment of radiological risk related to percutaneous coronary interventions (PCI). We aimed at comparison of radiological risk and procedural data of PCIs performed by radial (RA) and femoral (FA) approach in real life patients. Detailed retrospective analysis of 1500 consecutive PCIs with the use of radial or femoral access was performed. Comparison between RA and FA groups included procedural time (PT), fluoroscopy time (FT), radiation dose and contrast volume usage...
March 31, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28357726/validation-of-the-smart-minimum-ffr-algorithm-in-an-unselected-all-comer-population-of-patients-with-intermediate-coronary-stenoses
#19
Barry Hennigan, Nils Johnson, John McClure, David Corcoran, Stuart Watkins, Colin Berry, Keith G Oldroyd
Using data from a commercial pressure wire system (St. Jude Medical) we previously developed an automated "smart" algorithm to determine a reproducible value for minimum FFR (smFFR) and confirmed that it correlated very closely with measurements made off-line by experienced coronary physiology core laboratories. In this study we used the same "smart" minimum algorithm to analyze data derived from a different, commercial pressure wire system (Philips Volcano) and compared the values obtained to both operator-defined steady state FFR and the online automated minimum FFR reported by the pressure wire analyser...
March 29, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28357725/ventricular-pacing-site-separation-by-cardiac-computed-tomography-validation-for-the-prediction-of-clinical-response-to-cardiac-resynchronization-therapy
#20
S Modi, Raymond Yee, David Scholl, John Stirrat, Jorge A Wong, Carmen Lydell, Vamshi Kotha, Lorne J Gula, Allan C Skanes, Peter Leong-Sit, David McCarty, Maria Drangova, James A White
Cardiac Resynchronization Therapy (CRT) fails to provide benefit in up to one-third of patients. Maximizing the geographic separation of right and left ventricular pacing lead sites has been suggested as one way to improve response. Cardiac CT provides an opportunity to explore 3-dimensional inter-lead distance (ILD) measures for the prediction of CRT response. The objective of this study was to investigate associations between standardized measures of ILD by cardiac CT and echocardiographic response to CRT...
March 29, 2017: International Journal of Cardiovascular Imaging
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