keyword
MENU ▼
Read by QxMD icon Read
search

late gadolinium enhancement

keyword
https://www.readbyqxmd.com/read/28532781/usefulness-of-left-atrial-emptying-fraction-to-predict-ventricular-arrhythmias-in-patients-with-implantable-cardioverter-defibrillators
#1
Mischa T Rijnierse, Mehran Kamali Sadeghian, Sophie Schuurmans Stekhoven, P Stefan Biesbroek, Anne-Lotte C van der Lingen, Peter M van de Ven, Albert C van Rossum, Robin Nijveldt, Cornelis P Allaart
Impaired left atrial emptying fraction (LAEF) is an important predictor of mortality in patients with heart failure. As it may reflect increased LV wall stress, it might predict ventricular arrhythmia (VA) specifically. This study evaluated the predictive value of LAEF assessed with cardiovascular magnetic resonance (CMR) imaging with respect to appropriate device therapy (ADT) for VA and compared its role with CMR assessed scar size and other risk factors. In total, 229 patients (68% male, 63 ± 10 years, 61% ischemic cardiomyopathy) with LV ejection fraction ≤35% who underwent CMR and implantable cardioverter defibrillator (ICD) implantation for primary prevention in 2005 to 2012 were included...
April 27, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28528429/myocardial-edema-in-acute-myocarditis-relationship-of-t2-relaxometry-and-late-enhancement-burden-by-using-dual-contrast-turbo-spin-echo-mri
#2
A Mayr, G Klug, H J Feistritzer, S J Reinstadler, M Reindl, R Esterhammer, G Feuchtner, B Metzler, M F Schocke
To quantify myocardial edema by using a T2 relaxometry approach with a dual-contrast turbo spin-echo (dcTSE) sequence in patients with acute myocarditis regarding focal late gadolinium enhancement (LGE) burden. CMR T2 relaxometry was performed in 39 patients (age 41 ± 19 years; 36% women) with LGE in a typical myocarditis pattern and in ten healthy volunteers (age 46 ± 12; 60% woman). dcTSE sequence (echo time 29 and 75 ms, respectively) was used for T2 mapping, analysis were performed on the basis of region of interest (ROI)...
May 20, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28528162/intervendor-differences-in-the-accuracy%C3%A2-of%C3%A2-detecting-regional-functional%C3%A2-abnormalities-a-report-from-the-eacvi-ase-strain-standardization-task%C3%A2-force
#3
Oana Mirea, Efstathios D Pagourelias, Jurgen Duchenne, Jan Bogaert, James D Thomas, Luigi P Badano, Jens-Uwe Voigt
OBJECTIVES: The purpose of this study was to compare the accuracy of vendor-specific and independent strain analysis tools to detect regional myocardial function abnormality in a clinical setting. BACKGROUND: Speckle tracking echocardiography has been considered a promising tool for the quantitative assessment of regional myocardial function. However, the potential differences among speckle tracking software with regard to their accuracy in identifying regional abnormality has not been studied extensively...
May 11, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28527317/fully-automatic-segmentation-of-left-ventricular-anatomy-in-3-d-lge-mri
#4
Tanja Kurzendorfer, Christoph Forman, Michaela Schmidt, Christoph Tillmanns, Andreas Maier, Alexander Brost
The current challenge for electrophysiology procedures, targeting the left ventricle, is the localization and qualification of myocardial scar. Late gadolinium enhanced magnetic resonance imaging (LGE-MRI) is the current gold standard to visualize regions of myocardial infarction. Commonly, a stack of 2-D images is acquired of the left ventricle in short-axis orientation. Recently, 3-D LGE-MRI methods were proposed that continuously cover the whole heart with a high resolution within a single acquisition. The acquisition promises an accurate quantification of the myocardium to the extent of myocardial scarring...
May 8, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28520911/anatomic-validation-of-late-gadolinium-enhancement-as-evidence-of-myocardial-scarring-in-lamp2-cardiomyopathy
#5
Ethan J Rowin, Barry J Maron, Knarik Arkun, Martin S Maron
No abstract text is available yet for this article.
May 17, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28511861/speckle-tracking-layer-specific-analysis-of-myocardial-deformation-and-evaluation-of-scar-transmurality-in-chronic-ischemic-heart-disease
#6
Michela Tarascio, Laura Anna Leo, Catherine Klersy, Romina Murzilli, Tiziano Moccetti, Francesco Fulvio Faletra
BACKGROUND: Identification of the extent of scar transmurality in chronic ischemic heart disease is important because it correlates with viability. The aim of this retrospective study was to evaluate whether layer-specific two-dimensional speckle-tracking echocardiography allows distinction of scar presence and transmurality. METHODS: A total of 70 subjects, 49 with chronic ischemic cardiomyopathy and 21 healthy subjects, underwent two-dimensional speckle-tracking echocardiography and late gadolinium-enhanced cardiac magnetic resonance...
May 13, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28501519/the-utility-of-cardiac-magnetic-resonance-imaging-in-the-diagnosis-of-cardiac-sarcoidosis
#7
Kelly M Stanton, Madhusudan Ganigara, Peter Corte, David S Celermajer, Mark A McGuire, Paul J Torzillo, Tamera J Corte, Rajesh Puranik
BACKGROUND: Autopsy reports suggest that cardiac sarcoidosis occurs in 20 to 25% of patients with pulmonary sarcoidosis, yet the clinical ante-mortem diagnosis is made in only 5% of cases. Current diagnostic algorithms are complex and lack sensitivity. Cardiac Magnetic Resonance imaging (CMR) provides an opportunity to detect myocardial involvement in sarcoidosis. The aim of this study is to determine the prevalence and clinical significance of late gadolinium enhancement (LGE) on CMR in patients with sarcoidosis...
April 4, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28500368/advanced-myocardial-tissue-characterisation-by-a-multi-component-cmr-protocol-in-patients-with-rheumatoid-arthritis
#8
Simon Greulich, Agnes Mayr, Daniel Kitterer, Joerg Latus, Joerg Henes, Francesco Vecchio, Philipp Kaesemann, Alexandru Patrascu, Andreas Greiser, Stefan Groeninger, Francesco Romeo, Niko Braun, M Dominik Alscher, Udo Sechtem, Heiko Mahrholdt
OBJECTIVES: Rheumatoid arthritis (RA) patients are at increased risk of suffering from adverse cardiovascular events. Cardiovascular magnetic resonance (CMR) mapping techniques might be appropriate tools to complement late gadolinium enhancement (LGE) for the assessment of myocardial involvement. This study aimed to perform advanced myocardial tissue characterisation in RA patients by a multicomponent CMR protocol. METHODS: 22 RA patients were prospectively enrolled and underwent CMR, including LGE and T1/T2 mapping sequences; 20 volunteers served as controls...
May 12, 2017: European Radiology
https://www.readbyqxmd.com/read/28497254/9-phenanthrol-modulates-postinhibitory-rebound-and-afterhyperpolarizing-potentials-in-an-excitatory-motor-neuron-of-the-medicinal-leech
#9
James D Angstadt, Joshua R Giordano, Alexander J Goncalves
Postinhibitory rebound (PIR) responses in leech dorsal excitatory motor neurons (cell DE-3) are eliminated by Ca(2+) channel blockers but also exhibit a strong dependence on extracellular Na(+). These features could be explained by a voltage-gated Ca(2+) current acting in concert with a Ca(2+)-activated nonspecific current (ICAN). In vertebrates, ICAN is associated with TRPM4 channels which are blocked selectively by 9-phenanthrol. Here, we show that 9-phenanthrol selectively inhibits a late phase of PIR and simultaneously enhances afterhyperpolarizing potentials (AHPs)...
May 11, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28493526/real-time-mri-guidance-of-cardiac-interventions
#10
Adrienne E Campbell-Washburn, Mohammad A Tavallaei, Mihaela Pop, Elena K Grant, Henry Chubb, Kawal Rhode, Graham A Wright
Cardiac magnetic resonance imaging (MRI) is appealing to guide complex cardiac procedures because it is ionizing radiation-free and offers flexible soft-tissue contrast. Interventional cardiac MR promises to improve existing procedures and enable new ones for complex arrhythmias, as well as congenital and structural heart disease. Guiding invasive procedures demands faster image acquisition, reconstruction and analysis, as well as intuitive intraprocedural display of imaging data. Standard cardiac MR techniques such as 3D anatomical imaging, cardiac function and flow, parameter mapping, and late-gadolinium enhancement can be used to gather valuable clinical data at various procedural stages...
May 11, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28489781/clinical-characteristics-and-outcomes-of-patients-with-myocarditis-mimicking-st-segment-elevation-myocardial-infarction-analysis-of-a-case-series
#11
Shuang Wu, Yan-Min Yang, Jun Zhu, Huai-Bin Wan, Juan Wang, Han Zhang, Xing-Hui Shao
Acute myocarditis mimicking ST-segment elevation myocardial infarction (STEMI) is highly deceptive for an accurate diagnosis, and a systematic study is lacking with regard to the clinical features and prognosis of this distinct clinical entity.Patients with suspected STEMI and eventually diagnosed with myocarditis by cardiac magnetic resonance (CMR) from January 2012 to April 2016 at Fuwai Hospital were identified by reviewing medical records and electronic databases. Follow-up was conducted by clinical visits and phone contacts in a median duration of 17 months...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28485545/substrate-dependent-risk-stratification-for-implantable-cardioverter-defibrillator-therapies-using-cardiac-magnetic-resonance-imaging-the-importance-of-t1-mapping-in-non-ischemic-patients
#12
Simon Claridge, Silvia Mennuni, Thomas Jackson, Jonathan M Behar, Bradley Porter, Benjamin Sieniewicz, Julian Bostock, Mark O'Neill, Francis Murgatroyd, Jaswinder Gill, Gerald Carr-White, Amedeo Chiribiri, Reza Razavi, Zhong Chen, Christopher Aldo Rinaldi
INTRODUCTION: The role of implantable cardioverter defibrillators in non-ischemic cardiomyopathy is unclear and better risk-stratification is required. We sought to determine if T1 mapping predicts appropriate defibrillator therapy in patients with non-ischemic cardiomyopathy. We studied a mixed cohort of ischemic and non-ischemic patients to determine whether different CMR applications (T1 mapping, late gadolinium enhancement and Grayzone) were selectively predictive of therapies for the different arrhythmic substrates...
May 9, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28480596/when-should-we-use-contrast-material-in-cardiac-mri
#13
REVIEW
Elisabeth H M Paiman, Hildo J Lamb
At present, most of the cardiac magnetic resonance imaging (MRI) examinations rely on contrast-enhanced protocols, but noncontrast alternatives are emerging. Late gadolinium enhancement (LGE) imaging for the detection of myocardial scar can be considered the main cause for the embedding of cardiac MRI into the clinical routine. The novel noncontrast technique of native T1 mapping shows promise for tissue characterization in ischemic and nonischemic cardiomyopathy and may provide additional information over conventional LGE imaging...
May 8, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28477167/cardiovascular-magnetic-resonance-myocardial-t1-mapping-to-detect-and-quantify-cardiac-involvement-in-familial-amyloid-polyneuropathy
#14
Seitaro Oda, Daisuke Utsunomiya, Kosuke Morita, Takeshi Nakaura, Hideaki Yuki, Masafumi Kidoh, Kenichiro Hirata, Narumi Taguchi, Noriko Tsuda, Shinya Shiraishi, Tomohiro Namimoto, Kyoko Hirakawa, Seiji Takashio, Yasuhiro Izumiya, Megumi Yamamuro, Seiji Hokimoto, Kenichi Tsujita, Mitsuharu Ueda, Taro Yamashita, Yukio Ando, Yasuyuki Yamashita
OBJECTIVES: This study sought to explore the potential role of non-contrast T1 mapping for the detection and quantification of cardiac involvement in familial amyloid polyneuropathy (FAP). METHODS: Japanese patients with FAP [n = 41, age 53.2 ± 13.9 years, genotype Val30Met (n = 25), non-Val30Met (n = 16)] underwent cardiac magnetic resonance imaging that included T1 mapping (saturation-recovery method) and late gadolinium-enhanced (LGE) imaging on a 3...
May 5, 2017: European Radiology
https://www.readbyqxmd.com/read/28476245/twist-vibe-five-arterial-phase-technology-decreases-transient-severe-motion-after-bolus-injection-of-gd-eob-dtpa
#15
H Li, Y Xiao, S Wang, Y Li, X Zhong, W Situ, E Xiao, Z Zhang
AIM: To investigate whether time-resolved imaging with interleaved stochastic trajectories (TWIST)-volumetric interpolated breath-hold examination (VIBE) hepatic arterial phase imaging technique improves image quality in patients experiencing transient severe motion (TSM) during abdominal magnetic resonance imaging (MRI) with gadolinium ethoxybenzyl diethylenetriaminepentaacetic acid (Gd-EOB-DTPA). MATERIALS AND METHODS: This retrospective study compares TSM in MRI images from 28 patients with focal liver lesions imaged with gadopentetic acid (Gd-DTPA) and 28 patients with focal liver lesions imaged with Gd-EOB-DTPA...
May 2, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28472282/right-ventricular-outflow-tract-high-density-endocardial-unipolar-voltage-mapping-in-patients-with-brugada-syndrome-evidence-for-electroanatomical-abnormalities
#16
Konstantinos P Letsas, Michael Efremidis, Konstantinos Vlachos, Stamatis Georgopoulos, Nikolaos Karamichalakis, Dimitrios Asvestas, Kosmas Valkanas, Panagiotis Korantzopoulos, Tong Liu, Antonios Sideris
Aims: Epicardial structural abnormalities at the right ventricular outflow tract (RVOT) may provide the arrhythmia substrate in Brugada syndrome (BrS). Electroanatomical endocardial unipolar voltage mapping is an emerging tool that accurately identifies epicardial abnormalities in different clinical settings. This study investigated whether endocardial unipolar voltage mapping of the RVOT detects electroanatomical abnormalities in patients with BrS. Methods and results: Ten asymptomatic patients (8 males, 34...
May 2, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28465287/prevalence-of-subclinical-coronary-artery-disease-in-masters-endurance-athletes-with-a-low-atherosclerotic-risk-profile
#17
Ahmed Merghani, Viviana Maestrini, Stefania Rosmini, Andrew T Cox, Harshil Dhutia, Rachel Bastiaenen, Sarojini David, Tee Joo Yeo, Rajay Narain, Aneil Malhotra, Michael Papadakis, Mathew G Wilson, Maite Tome, Khaled AlFakih, James C Moon, Sanjay Sharma
Background -Studies in middle aged and older (masters) athletes with atherosclerotic risk factors for coronary artery disease (CAD) report higher coronary artery calcium (CAC) scores compared with sedentary individuals. Few studies have assessed the prevalence of CAD in masters athletes with a low atherosclerotic risk profile. Methods -We assessed 152 masters athletes aged 54.4±8.5 years (70% male) and 92 controls of similar age, sex and low Framingham 10 year CAD risk scores with an echocardiogram, exercise stress test, CT coronary angiogram, and cardiovascular magnetic resonance imaging (CMRI) with late gadolinium enhancement (LGE) and a 24-hour Holter...
May 2, 2017: Circulation
https://www.readbyqxmd.com/read/28461132/a-non-contrast-cmr-index-for-assessing-myocardial-fibrosis
#18
Qian Yin, Dana Abendschein, David Muccigrosso, Robert O'Connor, Thomas Goldstein, Jie Zheng
PURPOSE: Safe, sensitive, and non-invasive imaging methods to assess the presence, extent, and turnover of myocardial fibrosis are needed for early stratification of risk in patients who might develop heart failure after myocardial infarction. We describe a non-contrast cardiac magnetic resonance (CMR) approach for sensitive detection of myocardial fibrosis using a canine model of myocardial infarction and reperfusion. METHODS: Seven dogs had coronary thrombotic occlusion of the left anterior descending coronary arteries followed by fibrinolytic reperfusion...
April 28, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28460244/late-onset-cardiomyopathy-as-presenting-sign-of-attr-a45g-amyloidosis-caused-by-a-novel-ttr-mutation-p-a65g
#19
Sebastiaan H C Klaassen, Henny H Lemmink, Johan Bijzet, Andor W J M Glaudemans, Reinhard Bos, Wouter Plattel, Maarten P van den Berg, Riemer H J A Slart, Hans L A Nienhuis, Dirk J van Veldhuisen, Bouke P C Hazenberg
OBJECTIVE: The clinical description of a novel TTR gene mutation characterized by a late onset amyloid cardiomyopathy. METHODS AND RESULTS: A 78-year-old man of Dutch origin with recent surgery for bilateral carpal tunnel syndrome (CTS) was admitted to our hospital because of heart failure with preserved ejection fraction (55%). Cardiac ultrasound showed thickened biventricular walls, and cardiac magnetic resonance imaging also showed late gadolinium enhancement...
April 18, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28456833/relationship-between-fragmented-qrs-complexes-and-cardiac-status-in-duchenne-muscular-dystrophy-multimodal-validation-using-echocardiography-magnetic-resonance-imaging-and-holter-monitoring
#20
Min-Jung Cho, Ji-Won Lee, JeSang Lee, Yong Bum Shin, Hyoung Doo Lee
The presence of fragmented QRS is a known marker of heterogeneous ventricular activation around the myocardial scar area. We validated whether fragmented QRS shows any association with ventricular dysfunction, fibrosis, or ventricular arrhythmias in patients with Duchenne muscular dystrophy (DMD). Thirty-seven patients with DMD were evaluated using electrocardiography (ECG), echocardiography, cardiac magnetic resonance, and 24-h Holter monitoring. Associations between fragmented QRS and ventricular dysfunction, fibrosis, or ventricular arrhythmia were investigated...
April 29, 2017: Pediatric Cardiology
keyword
keyword
31583
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"