keyword
MENU ▼
Read by QxMD icon Read
search

Ecv

keyword
https://www.readbyqxmd.com/read/27899132/cardiac-t1-mapping-and-extracellular-volume-ecv-in-clinical-practice-a-comprehensive-review
#1
REVIEW
Philip Haaf, Pankaj Garg, Daniel R Messroghli, David A Broadbent, John P Greenwood, Sven Plein
Cardiovascular Magnetic Resonance is increasingly used to differentiate the aetiology of cardiomyopathies. Late Gadolinium Enhancement (LGE) is the reference standard for non-invasive imaging of myocardial scar and focal fibrosis and is valuable in the differential diagnosis of ischaemic versus non-ischaemic cardiomyopathy. Diffuse fibrosis may go undetected on LGE imaging. Tissue characterisation with parametric mapping methods has the potential to detect and quantify both focal and diffuse alterations in myocardial structure not assessable by LGE...
November 30, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27878700/performance-of-native-and-contrast-enhanced-t1-mapping-to-detect-myocardial-damage-in-patients-with-suspected-myocarditis-a-head-to-head-comparison-of-different-cardiovascular-magnetic-resonance-techniques
#2
Jonathan Nadjiri, Hanna Nieberler, Eva Hendrich, Andreas Greiser, Albrecht Will, Stefan Martinoff, Martin Hadamitzky
Myocardial T1 mapping is a novel technique that has proven to be superior to standard imaging for differentiation between healthy individuals in acute myocarditis. Aim of this study was comparison of T1 mapping with a clinical biomarker. We retrospectively investigated 171 patients undergoing cardiovascular magnetic resonance (CMR) examination with suspected myocarditis by performing native and contrast enhanced T1-mapping. Additionally, T2w and T1w images and late gadolinium enhancement sequences (LGE) were utilized for myocardial evaluation; Lake Louise Criteria comprise T1w, T2w and LGE imaging in a score...
November 23, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27861208/left-ventricular-myocardial-fibrosis-atrophy-and-impaired-contractility-in-patients-with-pulmonary-arterial-hypertension-and-a-preserved-left-ventricular-function-a-cardiac-magnetic-resonance-study
#3
Rami Homsi, Julian A Luetkens, Dirk Skowasch, Carmen Pizarro, Alois M Sprinkart, Juergen Gieseke, Julia Meyer Zur Heide Gen Meyer-Arend, Hans H Schild, Claas P Naehle
PURPOSE: Using a cardiac magnetic resonance (CMR) approach we investigated left ventricular (LV) myocardial changes associated with pulmonary arterial hypertension (PAH) by strain analysis and mapping techniques. MATERIALS AND METHODS: Seventeen patients with PAH (9 men; mean age, 64.2±13.6 y) and 20 controls (10 men, 63.2±10.5 y) were examined using CMR at 1.5 T. Native LV T1-relaxation times (T1) and extracellular volume fraction (ECV) were assessed using a MOLLI sequence, T2-relaxation times (T2) by means of a gradient spin-echo sequence, and LV longitudinal strain (LVS) and right ventricular (RV) longitudinal strain (RVS) by means of CMR feature tracking...
November 16, 2016: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/27855705/myocardial-t1-mapping-at-3t-using-saturation-recovery-reference-values-precision-and-comparison-with-molli
#4
Sebastian Weingärtner, Nadja M Meßner, Johannes Budjan, Dirk Loßnitzer, Uwe Mattler, Theano Papavassiliu, Frank G Zöllner, Lothar R Schad
BACKGROUND: Myocardial T1-mapping recently emerged as a promising quantitative method for non-invasive tissue characterization in numerous cardiomyopathies. Commonly performed with an inversion-recovery (IR) magnetization preparation at 1.5T, the application at 3T has gained due to increased quantification precision. Alternatively, saturation-recovery (SR) T1-mapping has recently been introduced at 1.5T for improved accuracy. Thus, the purpose of this study is to investigate the robustness and precision of SR T1-mapping at 3T and to establish accurate reference values for native T1-times and extracellular volume fraction (ECV) of healthy myocardium...
November 18, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27852696/insights-into-cardiac-involvement-in-ankylosing-spondylitis-from-cardiovascular-magnetic-resonance
#5
P Stefan Biesbroek, Sjoerd C Heslinga, Thelma C Konings, Irene E van der Horst-Bruinsma, Mark B M Hofman, Peter M van de Ven, Otto Kamp, Vokko P van Halm, Mike J L Peters, Yvo M Smulders, Albert C van Rossum, Mike T Nurmohamed, Robin Nijveldt
OBJECTIVE: To evaluate cardiac involvement in patients with ankylosing spondylitis using cardiac magnetic resonance (CMR). METHODS: Patients with ankylosing spondylitis without cardiovascular symptoms or known cardiovascular disease were screened by transthoracic echocardiography (TTE) for participation in this exploratory CMR study. We prospectively enrolled 15 ankylosing spondylitis patients with an abnormal TTE for further tissue characterisation using late gadolinium enhancement (LGE) and T1 mapping...
November 16, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27809867/coronary-microvascular-function-and-myocardial-fibrosis-in-women-with-angina-pectoris-and-no-obstructive-coronary-artery-disease-the-ipower-study
#6
Naja Dam Mygind, Marie Mide Michelsen, Adam Pena, Abbas Ali Qayyum, Daria Frestad, Thomas Emil Christensen, Adam Ali Ghotbi, Nynne Dose, Rebekka Faber, Niels Vejlstrup, Philip Hasbak, Andreas Kjaer, Eva Prescott, Jens Kastrup
BACKGROUND: Even in absence of obstructive coronary artery disease women with angina pectoris have a poor prognosis possibly due to coronary microvascular disease. Coronary microvascular disease can be assessed by transthoracic Doppler echocardiography measuring coronary flow velocity reserve (CFVR) and by positron emission tomography measuring myocardial blood flow reserve (MBFR). Diffuse myocardial fibrosis can be assessed by cardiovascular magnetic resonance (CMR) T1 mapping. We hypothesized that coronary microvascular disease is associated with diffuse myocardial fibrosis...
November 4, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27799206/a-multi-center-study-of-method-dependent-epidemiological-cutoff-values-ecvs-for-resistance-detection-in-candida-spp-and-aspergillus-spp-to-amphotericin-b-and-echinocandins-for-the-etest-agar-diffusion-method
#7
A Espinel-Ingroff, M Arendrup, E Cantón, S Cordoba, E Dannaoui, J García-Rodríguez, G M Gonzalez, N P Govender, E Martin-Mazuelos, C Lass-Flörl, M Lackner, M J Linares Sicilia, M A Rodriguez-Iglesias, T Pelaez, R K Shields, G Garcia-Effron, J Guinea, M Sanguinetti, J Turnidge
Method-dependent Etest epidemiological cutoff values (ECVs) are not available for susceptibility testing of either Candida or Aspergillus species with amphotericin B or echinocandins. In addition, reference caspofungin MICs for Candida spp. are unreliable. Candida and Aspergillus species wild-type (WT) Etest MIC distributions (microorganisms in a species-drug combination with no detectable phenotypic resistance) were established for 4,341 Candida albicans, 113 C. dubliniensis, 1,683 C. glabrata species complex (SC), 709 C...
October 31, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27794025/effect-of-contrast-dose-in-the-quantification-of-myocardial-extra-cellular-volume-in-adenosine-stress-rest-perfusion-cardiac-magnetic-resonance-examinations
#8
Meylin Caballeros, Pablo Bartolomé, Óscar Fernández González, Andreas Greiser, Loreto García Del Barrio, Jesús Pueyo, Gorka Bastarrika
BACKGROUND: Diffuse myocardial fibrosis can be quantified by calculating extra-cellular volume (ECV) from native and post-contrast T1 values using dedicated single bolus contrast medium injection protocols. PURPOSE: To evaluate differences in T1 maps and myocardial ECV measurements in routine stress/rest perfusion cardiovascular magnetic resonance (CMR) examinations after injection of single and double dose of contrast medium. MATERIAL AND METHODS: Thirty-seven consecutive patients (30 men; mean age, 62 ± 13 years) underwent clinically indicated adenosine stress/rest perfusion CMR examination to rule out myocardial ischemia following a conventional split-dose contrast medium injection strategy...
October 28, 2016: Acta Radiologica
https://www.readbyqxmd.com/read/27788681/native-t1-values-identify-myocardial-changes-and-stratify-disease-severity-in-patients-with-duchenne-muscular-dystrophy
#9
Laura J Olivieri, Peter Kellman, Robert J McCarter, Russell R Cross, Michael S Hansen, Christopher F Spurney
BACKGROUND: Duchenne muscular dystrophy (DMD) is an X-linked, inherited disorder causing dilated cardiomyopathy with variable onset and progression. Currently we lack objective markers of the effect of therapies targeted towards preventing progression of subclinical cardiac disease. Thus, our aim was to compare the ability of native T1 and extracellular volume (ECV) measurements to differentiate risk of myocardial disease in DMD and controls. METHODS: Twenty boys with DMD and 16 age/gender-matched controls without history predisposing to cardiac fibrosis, but with a clinical indication for cardiovascular magnetic resonance (CMR) evaluation, underwent CMR with contrast...
October 28, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27785679/the-evaluation-of-non-ischemic-dilated-cardiomyopathy-with-t1-mapping-and-ecv-methods-using-3t-cardiac-mri
#10
Cemile Ayşe Görmeli, Zeynep Maraş Özdemir, Ayşegül Sağır Kahraman, Jülide Yağmur, Ramazan Özdemir, Cemil Çolak
PURPOSE: The aim of this study was to examine the correlation between ventricular function and the extracellular volume fraction (ECV) in patients with non-ischemic dilated cardiomyopathy (NIDCM) using 3.0 T magnetic resonance imaging (MRI). We also hypothesized that native T1 and ECV values would be increased in patients with NIDCM, independent of the left ventricular ejection fraction (LVEF). The findings of our study could lead to further studies of the follow-up protocols. MATERIALS AND METHODS: In total, 53 consecutive dilated cardiomyopathy patients who had undergone cardiac MRI were functionally evaluated and underwent tissue characterization...
October 27, 2016: La Radiologia Medica
https://www.readbyqxmd.com/read/27782857/increased-left-ventricular-myocardial-extracellular-volume-is-associated-with-longer-cardiopulmonary-bypass-times-biventricular-enlargement-and-reduced-exercise-tolerance-in-children-after-repair-of-tetralogy-of-fallot
#11
Eugénie Riesenkampff, Wietske Luining, Mike Seed, Paweena Chungsomprasong, Cedric Manlhiot, Bernadette Elders, Brian W McCrindle, Shi-Joon Yoo, Lars Grosse-Wortmann
BACKGROUND: Unfavorable left ventricular (LV) remodelling may be associated with adverse outcomes after Tetralogy of Fallot (TOF) repair. We sought to assess T1 cardiovascular magnetic resonance (CMR) markers of diffuse LV myocardial fibrosis in children after TOF repair, and associated factors. METHODS: In this prospective, cross-sectional study, native (=non-contrast) T1 times and extracellular volume fraction (ECV) were quantified in the LV myocardium using CMR...
October 26, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27774692/isolation-and-partial-characterization-of-3-nontoxic-d-galactose-specific-isolectins-from-seeds-of-momordica-balsamina
#12
Amna K E Awadallah, Makarim Elfadil M Osman, Mariam A Ibrahim, Emerson S Bernardes, Marcelo Dias-Baruffi, Emadeldin Hassan E Konozy
Three isolectins denoted hereforth MBaL-30, MBaL-60, and MBaL-80 were isolated from seeds extract of Momordica balsamina by 30%, 60%, and 80% ammonium sulfate saturations, respectively. The native molecular weights of these lectins, as judged by gel filtration, were 108, 56, and 160 kDa, respectively. On SDS-PAGE, under reduced condition, 27 kDa band was obtained for all isolectins. The lectins hemagglutinating activities were variably inhibited by d-galactose (minimum inhibitory concentrations = 12.5mM, 50mM, and 0...
October 24, 2016: Journal of Molecular Recognition: JMR
https://www.readbyqxmd.com/read/27771398/myocardial-extracellular-volume-estimation-by-cmr-predicts-functional-recovery-following-acute-mi
#13
Ananth Kidambi, Manish Motwani, Akhlaque Uddin, David P Ripley, Adam K McDiarmid, Peter P Swoboda, David A Broadbent, Tarique Al Musa, Bara Erhayiem, Joshua Leader, Pierre Croisille, Patrick Clarysse, John P Greenwood, Sven Plein
OBJECTIVES: In the setting of reperfused acute myocardial infarction (AMI), the authors sought to compare prediction of contractile recovery by infarct extracellular volume (ECV), as measured by T1-mapping cardiac magnetic resonance (CMR), with late gadolinium enhancement (LGE) transmural extent. BACKGROUND: The transmural extent of myocardial infarction as assessed by LGE CMR is a strong predictor of functional recovery, but accuracy of the technique may be reduced in AMI...
October 18, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27761494/data-on-correlation-between-ct-derived-and-mri-derived-myocardial-extracellular-volume
#14
Yoshie Kurita, Kakuya Kitagawa, Yusuke Kurobe, Shiro Nakamori, Hiroshi Nakajima, Kaoru Dohi, Masaaki Ito, Hajime Sakuma
This article describes data related to a research article titled "Estimation of myocardial extracellular volume fraction with cardiac CT in subjects without clinical coronary artery disease: A feasibility study", Kurita et al. (in press) [1]. Myocardial extracellular volume fraction (ECV) is an imaging biomarker that can elevate in various heart diseases. This article describes correlation between CT-derived and MRI-derived ECV in 24 myocardial segments in 8 patients. CT-derived ECV was obtained from pre-contrast and delayed-phase images acquired by using dual-source CT system...
June 2016: Data in Brief
https://www.readbyqxmd.com/read/27756038/poor-anticoagulation-relates-to-extended-access-times-for-cardioversion-and-is-associated-with-long-term-major-cardiac-and-cerebrovascular-events
#15
Ömer Erküner, Roy Claessen, Ron Pisters, Germaine Schulmer, Roos Ramaekers, Laura Sonneveld, Elton Dudink, Theo Lankveld, Ione Limantoro, Bob Weijs, Laurent Pison, Yuri Blaauw, Cees B de Vos, Harry Jgm Crijns
BACKGROUND: Patients undergoing elective electrical cardioversion (ECV) for atrial fibrillation have a temporarily increased risk of thromboembolism. Current guidelines recommend adequate anticoagulation for ≥3 consecutive weeks precardioversion, i.e. consecutive INR values 2.0-3.0 in patients with vitamin K antagonists (VKA). We aimed to evaluate the occurrence and impact of subtherapeutic INRs precardioversion and to study factors associated with these unwanted fluctuations. METHODS: We recruited 346 consecutive patients undergoing elective ECV in the Maastricht University Medical Centre between 2008 and 2013...
October 11, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27744307/genetic-diversity-of-the-hwp1-gene-and-his3-ef3-cdc3-microsatellites-and-antifungal-susceptibility-profiles-of-candida-albicans-isolates-from-yaound%C3%A3-hiv-infected-patients
#16
Thierry Kammalac Ngouana, Pascal Drakulovski, Donika Krasteva, Rufin Kuipou Toghueo, Charles Kouanfack, Jacques Reynes, Eric Delaporte, Fabrice Fekam Boyom, Michèle Mallié, Sébastien Bertout
The molecular epidemiology and the antifungal susceptibility profiles of Candida albicans are scarce in Cameroon. Authors studied the genetic diversity and the antifungal susceptibility of C. albicans isolates from Yaoundé HIV-infected patients. Clinical isolates were obtained by mycological diagnosis of oropharyngeal swabs, stools, urine, and vaginal swabs from patients. C. albicans isolates were confirmed by the Light cycler real-time PCR of the ITS1 region of the 5.8s ribosomal DNA. The ABC genotypes and the Hwp1 gene amplification were carried out with specific primers...
October 14, 2016: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/27740904/electrocardiographic-impact-of-myocardial-diffuse-fibrosis-and-scar-mesa-multi-ethnic-study-of-atherosclerosis
#17
Yuko Y Inoue, Bharath Ambale-Venkatesh, Nathan Mewton, Gustavo J Volpe, Yoshiaki Ohyama, Ravi K Sharma, Colin O Wu, Chia-Ying Liu, David A Bluemke, Elsayed Z Soliman, João A C Lima, Hiroshi Ashikaga
Purpose To examine the associations of myocardial diffuse fibrosis and scar with surface electrocardiographic (ECG) parameters in individuals free of prior coronary heart disease in four different ethnicities. Materials and Methods This prospective cross-sectional study was approved by the institutional review boards, and all participants gave informed consent. A total of 1669 participants in the Multi-Ethnic Study of Atherosclerosis, or MESA, who were free of prior myocardial infarction underwent both ECG and cardiac magnetic resonance imaging...
October 13, 2016: Radiology
https://www.readbyqxmd.com/read/27733210/evaluation-of-myocardial-involvement-in-patients-with-connective-tissue-disorders-a-multi-parametric-cardiovascular-magnetic-resonance-study
#18
Agnes Mayr, Daniel Kitterer, Joerg Latus, Hannah Steubing, Joerg Henes, Francesco Vecchio, Philipp Kaesemann, Alexandru Patrascu, Andreas Greiser, Stefan Groeninger, Niko Braun, M Dominik Alscher, Udo Sechtem, Heiko Mahrholdt, Simon Greulich
BACKGROUND: Severe arrhythmias or heart failure may be surrogates of myocardial involvement in patients with connective tissue disorders (CTD). However, most patients present with unspecific symptoms, normal ECG, and preserved left ventricular ejection fraction (LV-EF). Therefore, timely diagnosis by an accurate technique is crucial. Late gadolinium enhancement (LGE) cardiovascular magnetic resonance (CMR) has proven value for the detection of focal processes, but due to the often diffuse character of fibrosis/inflammation in CTD patients, CMR mapping techniques might be of incremental value for the assessment of myocardial involvement...
October 13, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27718774/external-cephalic-version-in-premature-rupture-of-membranes-a-systematic-review
#19
Johanna Quist-Nelson, Kathryn Landers, Rebekah McCurdy, Vincenzo Berghella
BACKGROUND: External cephalic version (ECV) increases the likelihood of a vaginal delivery in patients with breech presentation. Our objective was to determine the rate of cephalic vaginal delivery in women undergoing ECV after PROM. METHODS: We performed a systematic review of all case reports, case series, and clinical trials of patients undergoing an ECV after PROM ≥ 24 weeks. Maternal demographics and outcome data were obtained. The primary outcome was rate of cephalic vaginal delivery...
October 9, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27717007/provisional-epidemiological-cutoff-values-for-standard-broth-microdilution-susceptibility-testing-of-flavobacterium-columnare
#20
C M Gieseker, T C Crosby, L C Woods
The gliding aquatic bacterium Flavobacterium columnare causes columnaris disease, a common problem for wild and farmed freshwater fish worldwide. Recently, a broth microdilution method was standardized to test the susceptibility of F. columnare against antimicrobials commonly used in aquaculture. We used this new method to measure the minimal inhibitory concentrations (MICs) of ten antimicrobials against 120 F. columnare isolates. The resulting MIC frequency distributions for each antimicrobial (1 MIC/isolate) were used to estimate epidemiological cut-off values (ECVs) which separate isolates with typical wild-type (WT) susceptibility from isolates with decreased non-wild-type (NWT) susceptibility...
September 22, 2016: Journal of Fish Diseases
keyword
keyword
55166
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"