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https://www.readbyqxmd.com/read/27907931/koronararterienanomalien-diagnostik-und-klassifikation-auf-basis-der-ct-und-mrt-des-herzens-von-alcapa-bis-terminationsanomaliecoronary-artery-anomalies-diagnosis-and-classification-based-on-cardiac-ct-and-mri-cmr-from-alcapa-to-anomalies-of-termination
#1
Philipp Heermann, Walter Heindel, Christoph Schülke
Background Coronary artery anomalies encompass a clinically and anatomically variable spectrum including physiological variants and pathophysiologically relevant anomalies. The majority of the variants has no hemodynamic relevance and is often detected accidentally. The recognition of the rare and relevant anomalies that cause either relevant shunt volumes leading to myocardial ischemia or ventricular tachyarrhythmias with the risk of sudden cardiac death is of major importance. Methods This review is based on a literature search in PubMed conducted using the key words "coronary artery" and/or "anomaly" and/or "anomalous origin" and/or "myocardial bridging" and/or "coronary artery fistula" and/or "Bland-White-Garland" and/or "ALCAPA"...
December 1, 2016: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/27894070/the-strategy-study-stress-cardiac-magnetic-resonance-versus-computed-tomography-coronary-angiography-for-the-management-of-symptomatic-revascularized-patients-resources-and-outcomes-impact
#2
Gianluca Pontone, Daniele Andreini, Andrea I Guaricci, Cristina Rota, Marco Guglielmo, Saima Mushtaq, Andrea Baggiano, Virginia Beltrama, Laura Fusini, Anna Solbiati, Chiara Segurini, Edoardo Conte, Paola Gripari, Andrea Annoni, Alberto Formenti, Maria Petulla', Federico Lombardi, Giuseppe Muscogiuri, Antonio L Bartorelli, Mauro Pepi
BACKGROUND: Computed tomography coronary angiography (cTCA) and stress cardiac magnetic resonance (stress-CMR) are suitable tools for diagnosing obstructive coronary artery disease in symptomatic patients with previous history of revascularization. However, performance appraisal of noninvasive tests must take in account the consequent diagnostic testing, invasive procedures, clinical outcomes, radiation exposure, and cumulative costs rather than their diagnostic accuracy only. We aimed to compare an anatomic (cTCA) versus a functional (stress-CMR) strategy in symptomatic patients with previous myocardial revascularization procedures...
October 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27870974/myocardial-perfusion-in-peripheral-raynaud-s-phenomenon-evaluation-using-stress-cardiovascular-magnetic-resonance
#3
Sophie Mavrogeni, Konstantinos Bratis, Loukia Koutsogeorgopoulou, Georgia Karabela, Efthymios Savropoulos, Gikas Katsifis, John Raftakis, George Markousis-Mavrogenis, Genovefa Kolovou
BACKGROUND: Peripheral Raynaud's phenomenon (RP) is either primary (PRP), without any coexisting disease or secondary (SRP), due to connective tissue diseases (CTD). We hypothesized that adenosine stress cardiovascular magnetic resonance (CMR) can assess myocardial perfusion in a population of PRP and SRP. PATIENTS-METHODS: Twenty CTDs, aged 30.6±7.5yrs., 16F/4M, including 9 systemic sclerosis (SSc), 4 systemic lupus erythematosus (SLE), 3 mixed connective tissue disease (MCTD), 2 polymyositis (PM) and 2 rheumatoid arthritis (RA), with SRP, under treatment with calcium blockers, were evaluated by stress CMR and compared with age-sex matched PRP and controls...
November 12, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27815793/cardiovascular-magnetic-resonance-in-patients-with-magnetic-resonance-conditional-pacemaker-systems-at-1-5%C3%A2-t-influence-of-pacemaker-related-artifacts-on-image-quality-including-first-pass-perfusion-aortic-and-mitral-valve-assessment-flow-measurement-short
#4
REVIEW
Oliver Klein-Wiele, Marietta Garmer, Martin Busch, Serban Mateiescu, Rhyan Urbien, Gianluca Barbone, Kaffer Kara, Michael Schulte-Hermes, Frauke Metz, Birgit Hailer, Dietrich Grönemeyer
There are only limited data on the impact of device-related artifacts on image quality in cardiovascular magnetic resonance imaging (CMR) in patients with pacemakers (PM). Adenosine stress perfusion, T1-weighted imaging and flow measurement as well as valve characterization have not been evaluated previously concerning artifact burden. We aimed to assess image quality in all routinely used CMR sequences. We analyzed 2623 myocardial segments in CMR scans of 61 patients with MR conditional PM (mean age 72.1 ± 11...
November 4, 2016: International Journal of Cardiovascular Imaging
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
#5
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/27793103/the-sphinx-s-riddle-cardiovascular-involvement-in-autoimmune-rheumatic-disease
#6
REVIEW
Sophie Mavrogeni, George Markousis-Mavrogenis, Genovefa Kolovou
Factors leading to Cardiovascular Disease (CVD) in Autoimmune Rheumatic Diseases (ARD) include: a) atherosclerosis and macro-microvascular coronary artery disease b) pericardial, myocardial and vascular inflammation c) heart valve disease d) heart failure and e) pulmonary hypertension.Cardiology utilizes various non-invasive imaging modalities, such as rest/stress Electrocardiogram (ECG), echocardiography, nuclear imaging and more recently Cardiovascular Magnetic Resonance (CMR) to detect ischemic or inflammatory disease in ARD...
October 28, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27729054/the-role-of-cardiovascular-magnetic-resonance-in-takotsubo-syndrome
#7
Rui Plácido, Bernardo Cunha Lopes, Ana G Almeida, Carlos E Rochitte
Takotsubo syndrome (TS) is a transient form of left ventricular dysfunction associated with a distinctive contraction pattern in the absence of significant coronary artery disease triggered by stressful events. Several aspects of its clinical profile have been described but it still remains difficult to quickly establish the diagnosis at admission.Cardiovascular magnetic resonance (CMR) has achieved great improvements in the last years, which in turn has made this imaging technology more attractive in the diagnosis and evaluation of TS...
October 12, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27688028/early-stage-heart-failure-with-preserved-ejection-fraction-in-the-pig-a-cardiovascular-magnetic-resonance-study
#8
Ursula Reiter, Gert Reiter, Martin Manninger, Gabriel Adelsmayr, Julia Schipke, Alessio Alogna, Alexandra Rajces, Aurelien F Stalder, Andreas Greiser, Christian Mühlfeld, Daniel Scherr, Heiner Post, Burkert Pieske, Michael Fuchsjäger
BACKGROUND: The hypertensive deoxy-corticosterone acetate (DOCA)-salt-treated pig (hereafter, DOCA pig) was recently introduced as large animal model for early-stage heart failure with preserved ejection fraction (HFpEF). The aim of the present study was to evaluate cardiovascular magnetic resonance (CMR) of DOCA pigs and weight-matched control pigs to characterize ventricular, atrial and myocardial structure and function of this phenotype model. METHODS: Five anesthetized DOCA and seven control pigs underwent 3 T CMR at rest and during dobutamine stress...
September 30, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27687024/complementary-role-of-cardiovascular-imaging-and-laboratory-indices-in-early-detection-of-cardiovascular-disease-in-systemic-lupus-erythematosus
#9
S Mavrogeni, L Koutsogeorgopoulou, T Dimitroulas, G Markousis-Mavrogenis, G Kolovou
BACKGROUND: Cardiovascular disease (CVD) has been documented in >50% of systemic lupus erythematosus (SLE) patients, due to a complex interplay between traditional risk factors and SLE-related factors. Various processes, such as coronary artery disease, myocarditis, dilated cardiomyopathy, vasculitis, valvular heart disease, pulmonary hypertension and heart failure, account for CVD complications in SLE. METHODS: Electrocardiogram (ECG), echocardiography (echo), nuclear techniques, cardiac computed tomography (CT), cardiovascular magnetic resonance (CMR) and cardiac catheterization (CCa) can detect CVD in SLE at an early stage...
September 29, 2016: Lupus
https://www.readbyqxmd.com/read/27668708/usefulness-of-late-gadolinium-enhancement-mri-combined-with-stress-imaging-in-predictive-significant-coronary-stenosis-in-new-diagnosed-left-ventricular-dysfunction
#10
Gianluca Di Bella, Alessandro Pingitore, Paolo Piaggi, Fausto Pizzino, Andrea Barison, Anna Terrizzi, Miriam d'angelo, Giancarlo Todiere, Salvina Quattrocchi, Scipione Carerj, Michele Emdin, Giovanni Donato Aquaro
BACKGROUND: To evaluate the accuracy of late gadolinium enhancement (LGE) cardiac magnetic resonance (CMR) and imaging stress test in predicting significant coronary artery disease (CAD) in left ventricular (LV) dysfunction. METHODS: We enrolled 187 consecutive out-patients (61±17years) with new evidence of depressed (<45%) ejection fraction and no history of previous heart diseases and absence of Q-waves. All patients underwent coronary angiography (CA) and to LGE-CMR examination to identify ischemic and non-ischemic LGE...
September 19, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27627806/patient-specific-mri-based-right-ventricle-models-using-different-zero-load-diastole-and-systole-geometries-for-better-cardiac-stress-and-strain-calculations-and-pulmonary-valve-replacement-surgical-outcome-predictions
#11
Dalin Tang, Pedro J Del Nido, Chun Yang, Heng Zuo, Xueying Huang, Rahul H Rathod, Vasu Gooty, Alexander Tang, Zheyang Wu, Kristen L Billiar, Tal Geva
BACKGROUND: Accurate calculation of ventricular stress and strain is critical for cardiovascular investigations. Sarcomere shortening in active contraction leads to change of ventricular zero-stress configurations during the cardiac cycle. A new model using different zero-load diastole and systole geometries was introduced to provide more accurate cardiac stress/strain calculations with potential to predict post pulmonary valve replacement (PVR) surgical outcome. METHODS: Cardiac magnetic resonance (CMR) data were obtained from 16 patients with repaired tetralogy of Fallot prior to and 6 months after pulmonary valve replacement (8 male, 8 female, mean age 34...
2016: PloS One
https://www.readbyqxmd.com/read/27624746/quantitative-assessment-of-myocardial-blood-flow-in-coronary-artery-disease-by-cardiovascular-magnetic-resonance-comparison-of-fermi-and-distributed-parameter-modeling-against-invasive-methods
#12
Giorgos Papanastasiou, Michelle C Williams, Marc R Dweck, Shirjel Alam, Annette Cooper, Saeed Mirsadraee, David E Newby, Scott I Semple
BACKGROUND: Mathematical modeling of perfusion cardiovascular magnetic resonance (CMR) data allows absolute quantification of myocardial blood flow and can potentially improve the diagnosis and prognostication of obstructive coronary artery disease (CAD), against the current clinical standard of visual assessments. This study compares the diagnostic performance of distributed parameter modeling (DP) against the standard Fermi model, for the detection of obstructive CAD, in per vessel against per patient analysis...
September 13, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27583385/quantitative-perfusion-analysis-of-first-pass-contrast-enhancement-kinetics-application-to-mri-of-myocardial-perfusion-in-coronary-artery-disease
#13
Sohae Chung, Binita Shah, Pippa Storey, Sohah Iqbal, James Slater, Leon Axel
PURPOSE: Perfusion analysis from first-pass contrast enhancement kinetics requires modeling tissue contrast exchange. This study presents a new approach for numerical implementation of the tissue homogeneity model, incorporating flexible distance steps along the capillary (NTHf). METHODS: The proposed NTHf model considers contrast exchange in fluid packets flowing along the capillary, incorporating flexible distance steps, thus allowing more efficient and stable calculations of the transit of tracer through the tissue...
2016: PloS One
https://www.readbyqxmd.com/read/27543308/diagnostic-performance-of-treadmill-exercise-cardiac-magnetic-resonance-the-prospective-multicenter-exercise-cmr-s-accuracy-for-cardiovascular-stress-testing-exact-trial
#14
Subha V Raman, Jennifer A Dickerson, Wojciech Mazur, Timothy C Wong, Erik B Schelbert, James K Min, Debbie Scandling, Cheryl Bartone, Jason T Craft, Paaladinesh Thavendiranathan, Ernest L Mazzaferri, John W Arnold, Robert Gilkeson, Orlando P Simonetti
BACKGROUND: Stress cardiac magnetic resonance (CMR) has typically involved pharmacologic agents. Treadmill CMR has shown utility in single-center studies but has not undergone multicenter evaluation. METHODS AND RESULTS: Patients referred for treadmill stress nuclear imaging (SPECT) were prospectively enrolled across 4 centers. After rest (99m)Tc SPECT, patients underwent resting cine CMR. In-room stress was then performed using an MR-compatible treadmill with continuous 12-lead electrocardiogram monitoring...
August 19, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27535681/characterisation-of-myocardial-structure-and-function-in-adult-onset-growth-hormone-deficiency-using-cardiac-magnetic-resonance
#15
Julia D J Thomas, Abhishek Dattani, Filip Zemrak, Thomas Burchell, Scott A Akker, Mark Gurnell, Ashley B Grossman, L Ceri Davies, Márta Korbonits
Growth hormone (GH) can profoundly influence cardiac function. While GH excess causes well-defined cardiac pathology, fewer data are available regarding the more subtle cardiac changes seen in GH deficiency (GHD). This preliminary study uses cardiac magnetic resonance imaging (CMR) to assess myocardial structure and function in GHD. Ten adult-onset GHD patients underwent CMR, before and after 6 and 12 months of GH replacement. They were compared to 10 age-matched healthy controls and sex-matched healthy controls...
December 2016: Endocrine
https://www.readbyqxmd.com/read/27484888/-is-stress-cardiovascular-magnetic-resonance-really-useful-to-detect-ischemia-and-predict-events-in-patients-with-different-cardiovascular-risk-profile
#16
Alberto Esteban-Fernández, Isabel Coma-Canella, Gorka Bastarrika, Joaquín Barba-Cosials, Pedro M Azcárate-Agüero
OBJECTIVE: The aim of this study was to evaluate the diagnostic and prognostic usefulness of stress cardiovascular magnetic resonance (stress CMR) in patients with different cardiovascular risk profile and to assess if the degree of hypoperfusion is important to guide clinical decisions. METHOD: We included patients submitted to adenosine stress CMR to rule out myocardial ischemia. We evaluated its diagnostic accuracy with likelihood ratio (LR) and its prognostic value with survival curves and a Cox regression model...
July 30, 2016: Archivos de Cardiología de México
https://www.readbyqxmd.com/read/27476576/impact-of-stress-cardiac-magnetic-resonance-imaging-on-clinical-care
#17
Sloane McGraw, Simone Romano, Jennifer Jue, Michael A Bauml, Jaehoon Chung, Afshin Farzaneh-Far
Given the rising costs of imaging, there is increasing pressure to provide evidence for direct additive impact on clinical care. Appropriate use criteria (AUC) were developed to optimize test-patient selection and are increasingly used by payers to assess reimbursement. However, these criteria were created by expert consensus with limited systematic validation. The aims of this study were therefore to determine (1) rates of active clinical change resulting from stress cardiovascular magnetic resonance (CMR) imaging and (2) whether the AUC can predict these changes...
September 15, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27473274/caffeine-intake-inverts-the-effect-of-adenosine-on-myocardial-perfusion-during-stress-as-measured-by-t1-mapping
#18
Dirkjan Kuijpers, Niek H Prakken, Rozemarijn Vliegenthart, Paul R M van Dijkman, Pim van der Harst, Matthijs Oudkerk
Caffeine intake before adenosine stress myocardial perfusion imaging may cause false negative findings. We hypothesized that the antagonistic effect of caffeine can be measured by T1 relaxation times in rest and adenosine stress cardiac magnetic resonance imaging (CMR), as T1 mapping techniques are sensitive to changes in myocardial blood volume. We prospectively analyzed 105 consecutive patients with adenosine stress perfusion CMR on a 1.5-T MRI system. Rest and stress T1 mapping was performed using Modified Look-Locker Inversion recovery...
October 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27465770/the-clinical-utility-of-new-cardiac-imaging-modalities-in-australasian-clinical-practice
#19
Christian Hamilton-Craig, Jonathan Chan
Cardiac imaging is a rapidly evolving field, with improvements in the diagnostic capabilities of non-invasive cardiac assessment. We review the two main emerging technologies in cardiac imaging: computed tomography coronary angiography (CTCA) to evaluate chest symptoms and to exclude coronary artery disease; and cardiovascular magnetic resonance (CMR) for evaluating cardiac morphology, function and presence of scar. CTCA is an excellent "rule out" test, with a negative predictive value approaching 100%. Radiation exposure is no longer a concern for CTCA, with doses routinely < 5 mSv, and as low as < 1 mSv in selected patients...
August 1, 2016: Medical Journal of Australia
https://www.readbyqxmd.com/read/27461210/utility-of-adenosine-stress-perfusion-cmr-to-assess-paediatric-coronary-artery-disease
#20
Hopewell N Ntsinjana, Oliver Tann, Marina Hughes, Graham Derrick, Aurelio Secinaro, Silvia Schievano, Vivek Muthurangu, Andrew M Taylor
AIMS: Cardiovascular magnetic resonance (CMR), using adenosine stress perfusion and late-gadolinium enhancement (LGE), is becoming the 'gold standard' non-invasive imaging modality in the assessment of adults with coronary artery disease (CAD). However, despite its proved feasibility in paediatric patients, clinical utility has not been demonstrated. Therefore, this study aims to establish the role of adenosine stress perfusion CMR as a screening test in paediatric patients with acquired or congenital CAD...
July 26, 2016: European Heart Journal Cardiovascular Imaging
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