keyword
MENU ▼
Read by QxMD icon Read
search

"Cardiac magnetic resonance"

keyword
https://www.readbyqxmd.com/read/29778849/influence-of-aortic-dilation-on-the-regional-aortic-stiffness-of-bicuspid-aortic-valve-assessed-by-4-dimensional-flow-cardiac-magnetic-resonance-comparison-with-marfan-syndrome-and-degenerative-aortic-aneurysm
#1
Andrea Guala, Jose Rodriguez-Palomares, Lydia Dux-Santoy, Gisela Teixido-Tura, Giuliana Maldonado, Laura Galian, Marina Huguet, Filipa Valente, Laura Gutiérrez, Teresa González-Alujas, Kevin M Johnson, Oliver Wieben, Augusto Sao Avilés, David Garcia-Dorado, Arturo Evangelista
OBJECTIVES: This study sought to ascertain whether patients with a bicuspid aortic valve (BAV) have an intrinsic alteration in regional aortic stiffness compared with patients with tricuspid aortic valve (TAV) and Marfan syndrome (MFS) patients with similar aortic sizes, as well as to assess the influence of ascending aorta (AAo) dilation on regional stiffness parameters in BAV patients. BACKGROUND: Imaging biomarkers as predictors of BAV, MFS, and degenerative AAo aneurysms in TAV patients (DA-TAV) are lacking...
May 11, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29777140/different-responses-of-left-atrium-and-left-atrial-appendage-to-radiofrequency-catheter-ablation-of-atrial-fibrillation-a-follow-up-mri-study
#2
Yun Gi Kim, Jaemin Shim, Suk-Kyu Oh, Hee-Soon Park, Kwang-No Lee, Sung Ho Hwang, Jong-Il Choi, Young-Hoon Kim
Atrial fibrillation (AF) is known to cause adverse remodeling of left atrium (LA). Radiofrequency catheter ablation (RFCA) of AF is associated with decrease in LA volume. However, the impact of RFCA on left atrial appendage (LAA) volume and hemodynamic function is not fully understood. We analyzed 123 patients who underwent cardiac magnetic resonance imaging (MRI) evaluation before and after RFCA in Korea University Anam Hospital. LA and LAA volume were measured before and after RFCA based on cardiac MRI. Baseline LA volume was 99...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29776653/accuracy-of-phase-contrast-velocity-mapping-proximal-and-distal-to-stent-artifact-during-cardiac-magnetic-resonance-imaging
#3
Catherine M Avitabile, Matthew A Harris, Ravi S Doddasomayajula, Steven G Chopski, Matthew J Gillespie, Yoav Dori, Andrew C Glatz, Mark A Fogel, Kevin K Whitehead
Little data are available on the accuracy of phase-contrast magnetic resonance imaging (PC-MRI) velocity mapping in the vicinity of intravascular metal stents other than nitinol stents. Therefore, we sought to determine this accuracy using in vitro experiments. An in vitro flow phantom was used with 3 stent types: (1) 316L stainless steel, (2) nitinol self-expanding, and (3) platinum-iridium. Steady and pulsatile flow was delivered with a magnetic resonance imaging-compatible pump (CardioFlow 5000, Shelley Medical, London, Ontario, Canada)...
April 20, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29775415/exercise-cardiac-mri-unmasks-right-ventricular-dysfunction-in-acute-hypoxia-and-chronic-pulmonary-arterial-hypertension
#4
Shareen Kaur Jaijee, Marina Quinlan, Pawel Tokarczuk, Matthew Clemence, Luke S Howard, J Simon R Gibbs, Declan O'Regan
Background - Coupling of right ventricular (RV) contractility to afterload is maintained at rest in the early stages of pulmonary arterial hypertension (PAH), but exercise may unmask depleted contractile reserves. We assessed whether elevated afterload reduces RV contractile reserve despite compensated resting function using non-invasive exercise imaging. Methods and Results - Fourteen patients with PAH (mean age 39.1 years, 10 females) and 34 healthy control subjects (mean age 35.6 years, 17 females) completed real-time cardiac magnetic resonance imaging during sub-maximal exercise breathing room-air...
May 18, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29774076/the-human-somatostatin-receptor-type-2-as-an-imaging-and-suicide-reporter-gene-for-pluripotent-stem-cell-derived-therapy-of-myocardial-infarction
#5
Katrien Neyrinck, Natacha Breuls, Bryan Holvoet, Wouter Oosterlinck, Esther Wolfs, Hubert Vanbilloen, Olivier Gheysens, Robin Duelen, Willy Gsell, Ivo Lambrichts, Uwe Himmelreich, Catherine M Verfaillie, Maurilio Sampaolesi, Christophe M Deroose
Rationale: Pluripotent stem cells (PSCs) are being investigated as a cell source for regenerative medicine since they provide an infinitive pool of cells that are able to differentiate towards every cell type of the body. One possible therapeutic application involves the use of these cells to treat myocardial infarction (MI), a condition where billions of cardiomyocytes (CMs) are lost. Although several protocols have been developed to differentiate PSCs towards CMs, none of these provide a completely pure population, thereby still posing a risk for neoplastic teratoma formation...
2018: Theranostics
https://www.readbyqxmd.com/read/29773485/pregnancy-after-heterotopic-heart-transplant-removal
#6
S Churchill, L de Lloyd, H C Francis, H Wallis
Heterotopic heart transplants were introduced in 1974. The technique allows the patient's native heart to be preserved in situ, alongside the transplanted heterotopic donor heart (Newcomb et al., 2004). We present the case of a nulliparous woman who underwent heterotopic heart transplant in infancy, and subsequent explantation of the donor heart eleven years later, when her native heart function recovered. In adulthood the patient attended pre-pregnancy counselling and was awaiting cardiac magnetic resonance imaging when she presented pregnant at 6 weeks-of-gestation...
April 24, 2018: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/29765443/management-of-cardiac-hemochromatosis
#7
Wilbert S Aronow
Iron-overload syndromes may be hereditary or acquired. Patients may be asymptomatic early in the disease. Once heart failure develops, there is rapid deterioration. Cardiac hemochromatosis is characterized by a dilated cardiomyopathy with dilated ventricles, reduced ejection fraction, and reduced fractional shortening. Deposition of iron may occur in the entire cardiac conduction system, especially the atrioventricular node. Cardiac hemochromatosis should be considered in any patient with unexplained heart failure...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29764898/clinical-presentation-and-outcome-in-a-contemporary-cohort-of-patients-with-acute-myocarditis-the-multicenter-lombardy-registry
#8
Enrico Ammirati, Manlio Cipriani, Claudio Moro, Claudia Raineri, Daniela Pini, Paola Sormani, Riccardo Mantovani, Marisa Varrenti, Patrizia Pedrotti, Cristina Conca, Antonio Mafrici, Aurelia Grosu, Daniele Briguglia, Silvia Guglielmetto, Giovanni Battista Perego, Stefania Colombo, Salvatore Ivan Caico, Cristina Giannattasio, Alberto Maestroni, Valentina Carubelli, Marco Metra, Carlo Lombardi, Jeness Campodonico, Piergiuseppe Agostoni, Giovanni Peretto, Laura Scelsi, Annalisa Turco, Giuseppe Di Tano, Carlo Campana, Armando Belloni, Fabrizio Morandi, Andrea Mortara, Antonio Cirò, Michele Senni, Antonello Gavazzi, Maria Frigerio, Fabrizio Oliva, Paolo G Camici
Background -There is controversy regarding outcome of patients with acute myocarditis (AM), and lack of data on how patients admitted with suspected AM are managed. We report characteristics, in-hospital management and long-term outcome of patients with AM based on a retrospective multi-center registry from 19 Italian hospitals. Methods -A total of 684 patients with suspected AM and recent onset of symptoms (<30 days) were screened between May 2001 and February 2017. Patients >70 years and those older than 50 years without coronary angiography were excluded...
May 15, 2018: Circulation
https://www.readbyqxmd.com/read/29764897/diagnostic-yield-of-genetic-testing-in-young-athletes-with-t-wave-inversion
#9
Nabeel Sheikh, Michael Papadakis, Mathew Wilson, Aneil Malhotra, Carmen Adamuz, Tessa Homfray, Lorenzo Monserrat, Elijah R Behr, Sanjay Sharma
Background -T-wave inversion (TWI) is common in patients with cardiomyopathy. However, up to 25% of athletes of African/Afro-Caribbean descent (black athletes) and 5% of white athletes also have TWI of unclear clinical significance despite comprehensive clinical evaluation and long-term follow-up. The aim of this study was to determine the diagnostic yield from genetic testing, beyond clinical evaluation, when investigating athletes with TWI. Methods -We investigated 50 consecutive asymptomatic black and 50 white athletes aged 14-35-years-old with TWI and a normal echocardiogram who were referred to a UK tertiary center for cardiomyopathy and sports cardiology...
May 15, 2018: Circulation
https://www.readbyqxmd.com/read/29764590/-characteristics-of-ventricular-function-in-pulmonary-hypertension-patients-with-different-shape-of-interventricular-septum-preliminary-study-with-cardiac-magnetic-resonance-imaging
#10
Dan Wang, Zhang Zhang, Fan Yang, Le Zhang, Zhenwen Yang, Wen Ren, Tielian Yu, Dong Li
BACKGROUND: To study the characteristics of ventricular function in Pulmonary Hypertension (PH) Patients with different shape of Interventricular Septum (IVS) by cardiac magnetic resonance (CMR). METHODS: 36 PH patients diagnosed by right heart catheterization accepted CMR. According to the morphology of IVS, the patients were divided into two groups: the non-deformation group (10 patients) and the deformation group (26 patients). The ventricular function parameters were as follows: RV and LV end-diastolic volume index (EDVI), end-systolic volume index (ESVI), stroke volume index (SVI), cardiac index (CI), ejection fraction (EF), and myocardial mass index (MMI)...
May 20, 2018: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/29762918/impact-of-heart-rate-on-flow-measurements-in-aortic-regurgitation
#11
Mats Lidén, Maciej Wodecki, Per Thunberg, Peter Rask
BACKGROUND: Flow measurements using cardiac magnetic resonance imaging (CMRI) enable quantification of the stroke volume, regurgitant volume (RV) and regurgitant fraction (RF) in patients with aortic regurgitation (AR). These variables are used to assess the severity of the valve disease and for the timing of surgery. The aim of the study was to investigate the impact of an increased heart rate on measurement of the RV and RF in patients with AR. METHODS: Among 13 patients with known moderate or severe AR, regurgitant flow measurements, using phase-contrast cine magnetic resonance imaging, were obtained in the ascending aorta...
September 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29762817/cardiac-magnetic-resonance-in-systemic-sclerosis-patients-with-cardiac-symptoms-do-we-really-need-it
#12
G De Luca, C Campochiaro, G Cavalli, L Dagna
No abstract text is available yet for this article.
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29760346/effect-of-sitagliptin-on-coronary-flow-reserve-assessed-by-magnetic-resonance-imaging-in-type-2-diabetic-patients-with-coronary-artery-disease
#13
Keishi Moriwaki, Tetsushiro Takeuchi, Naoki Fujimoto, Toshiki Sawai, Yuichi Sato, Naoto Kumagai, Jun Masuda, Shiro Nakamori, Masaki Ishida, Norikazu Yamada, Mashio Nakamura, Hajime Sakuma, Masaaki Ito, Kaoru Dohi
BACKGROUND: The present study was conducted to assess the cardiovascular effects of dipeptidyl peptidase-4 inhibitors (DPP4i) on coronary flow reserve (CFR), left ventricular (LV) function and endothelial function of the peripheral artery by comparison with those of α-glucosidase inhibitors (αGI) in patients with type 2 diabetes mellitus (T2DM) and coronary artery disease (CAD).Methods and Results:We randomly assigned 30 patients with T2DM and CAD to receive either sitagliptin or voglibose, and 28 patients (age 69±9 years, 75% male, hemoglobin A1c [HbA1c] 6...
May 12, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29759775/real-time-x-mri-guided-left-ventricular-lead-implantation-for-targeted-delivery-of-cardiac-resynchronization-therapy
#14
Jonathan M Behar, Peter Mountney, Daniel Toth, Sabrina Reiml, Maria Panayiotou, Alexander Brost, Bernhard Fahn, Rashed Karim, Simon Claridge, Tom Jackson, Ben Sieniewicz, Nik Patel, Mark O'Neill, Reza Razavi, Kawal Rhode, Christopher Aldo Rinaldi
OBJECTIVES: This study sought to test the feasibility of a purpose-built, integrated software platform to process, analyze, and overlay cardiac magnetic resonance (CMR) data in real time within a combined cardiac catheter laboratory and magnetic resonance imaging scanner suite (X-MRI) to guide left ventricular (LV) lead implantation. BACKGROUND: Suboptimal LV lead position is a major determinant of poor cardiac resynchronization therapy (CRT) response, and the optimal site is highly patient specific...
August 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29752376/effects-of-prolonged-spaceflight-on-atrial-size-atrial-electrophysiology-and-risk-of-atrial-fibrillation
#15
Htet W Khine, Katarina Steding-Ehrenborg, Jeffrey L Hastings, Jamie Kowal, James D Daniels, Richard L Page, Jeffery J Goldberger, Jason Ng, Beverley Adams-Huet, Michael W Bungo, Benjamin D Levine
BACKGROUND: The prevalence of atrial fibrillation (AF) in active astronauts is ≈5%, similar to the general population but at a younger age. Risk factors for AF include left atrial enlargement, increased number of premature atrial complexes, and certain parameters on signal-averaged electrocardiography, such as P-wave duration, root mean square voltage for the terminal 20 ms of the signal-averaged P wave, and P-wave amplitude. We aimed to evaluate changes in atrial structure, supraventricular beats, and atrial electrophysiology to determine whether spaceflight could increase the risk of AF...
May 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29750182/the-interaction-of-qrs-duration-with-cardiac-magnetic-resonance-derived-scar-and-mechanical-dyssynchrony-in-systolic-heart-failure-implications-for-cardiac-resynchronization-therapy
#16
Tom Jackson, Sana Amraoui, Manav Sohal, Eva Sammut, Jonathan M Behar, Simon Claridge, Jessica Webb, Ben Sienecwicz, Reza Razavi, Christopher Aldo Rinaldi, Gerald Carr-White
Background: Trials using echocardiographic mechanical dyssynchrony (MD) parameters in narrow QRS patients have shown a negative response to CRT. We hypothesized MD in these patients may relate to myocardial scar rather than electrical dyssynchrony. Methods: We determined the prevalence of cardiac magnetic resonance (CMR) derived measures of MD in 130 systolic heart failure patients with both broad (≥ 130 ms - BQRS) and narrow QRS duration (< 130 ms - NQRS)...
March 2018: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/29749237/structural-assessment-of-myocardial-infarction-scars-and-left-ventricular-function-with-cardiac-magnetic-resonance-imaging-in-patients-at-high-risk-of-sudden-cardiac-death
#17
V Neuschl, Z Berecova, J Madaric, J Simkova, A Glezlova, R Hatala
OBJECTIVES: Results of qualitative and quantitative analyses of scars and LV (left ventricle) function acquired by means of cardiac magnetic resonance (CMR) were correlated with a subsequent occurrence of malignant ventricular arrhythmias in patients at high risk of sudden cardiac death (SCD). METHODS: We have prospectively followed 47 patients (mean age 60 ± 11 years) who were hospitalized for an implantable cardioverter-defibrillator (ICD) implantation to prevent SCD...
2018: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/29747845/quantitative-stress-perfusion-cardiac-magnetic-resonance-improves-prognostication-crossroads-for-increased-use-of-this-powerful-technology
#18
EDITORIAL
Andrew E Arai
No abstract text is available yet for this article.
May 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29745607/-characteristics-of-the-inferior-wall-hypertrophy-in-hypertrophic-cardiomyopathy-patients-with-contrast-echocardiography
#19
Zhiyue Liu, Wen Zhang, Xianchao Jing, Lei Xiao, He Huang
We tried to explore the value of contrast echocardiography (CEcho) on evaluating hypertrophic cardiomyopathy (HCM) with the inferior wall hypertrophy. A total of 114 patients with HCM were investigated. All the patients received CEcho and routine echocardiography (Echo), and 45 of them received cardiac magnetic resonance (CMR) and 47 of them received Holter. The frequency and percentage of inferior wall hypertrophy were analyzed in HCM patients, as well as the structure and function. The results showed that: (1) Inferior wall hypertrophy was detected in 55 patients (48%) by Echo, while 68 patients (60%) by CEcho...
February 1, 2018: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29745463/therapeutic-implications-of-a-combined-diagnostic-workup-including-endomyocardial-biopsy-in-an-all-comer-population-of-patients-with-heart-failure-a-retrospective-analysis
#20
Efthymios Sotiriou, Susanne Heiner, Thomas Jansen, Moritz Brandt, Kai Helge Schmidt, Karl-Friedrich Kreitner, Tilman Emrich, Heinz-Peter Schultheiss, Eberhard Schulz, Thomas Münzel, Philip Wenzel
BACKGROUND: Aetiology of heart failure (HF) often remains obscure. We therefore evaluated the usefulness of a combined diagnostic approach including cardiac magnetic resonance imaging (CMRI) and endomyocardial biopsy (EMB) to assess the cause of unexplained cardiomyopathy underlying HF. METHODS AND RESULTS: We retrospectively investigated 100 consecutive patients (36% women, mean age 53.6 ± 18.8 years) presenting with unexplained cardiomyopathy (HF with reduced ejection fraction or left ventricular hypertrophy; excluding ischaemic and valvular heart disease; left ventricular ejection fraction 31...
May 10, 2018: ESC Heart Failure
keyword
keyword
17292
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"