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CMR reference values

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https://www.readbyqxmd.com/read/30084570/cardiac-mri-a-useful-tool-for-differentiating-cardiac-thrombi-from-tumors
#1
Einat Slonimsky, Osnat Konen, Elio Di Segni, Eliyahu Konen, Orly Goitein
BACKGROUND: Correct diagnosis of cardiac masses is a challenge in clinical practice. Accurate identification and differentiation between cardiac thrombi and tumors is crucial because prognosis and appropriate clinical management vary substantially. OBJECTIVES: To evaluate the diagnostic performances of cardiac magnetic resonance imaging (CMR) in differentiating between cardiac thrombi and tumors. METHODS: A retrospective review of a prospectively maintained database of all CMR scans was performed to distinguish between cardiac thrombi and tumors during a 10 year period in a single academic referral center (2004-2013)...
August 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/30072291/quantification-of-myocardial-enhancement-on-cine-mri-diagnostic-value-in-cardiac-amyloidosis
#2
Clément Cholet, Thibaud Damy, François Legou, Hicham Kobeiter, Alain Rahmouni, Jean-François Deux
RATIONALE AND OBJECTIVES: Diagnosis of cardiac amyloidosis (CA) on cardiac magnetic resonance (CMR) can be challenging and quantitative indexes are relevant to further characterize the myocardium. We hypothesize that the relative myocardial enhancement measured from pre and post contrast cine imaging provides diagnostic information for CA in the setting of left ventricular hypertrophy (LVH). MATERIALS AND METHODS: Patients with LVH referred to our center and control subjects with normal CMR were retrospectively included...
July 31, 2018: Academic Radiology
https://www.readbyqxmd.com/read/30025523/a-multi-band-double-inversion-radial-fast-spin-echo-technique-for-t2-cardiovascular-magnetic-resonance-mapping-of-the-heart
#3
Mahesh Bharath Keerthivasan, Sagar Mandava, Kevin Johnson, Ryan Avery, Rajesh Janardhanan, Diego R Martin, Ali Bilgin, Maria I Altbach
BACKGROUND: Double inversion recovery (DIR) fast spin-echo (FSE) cardiovascular magnetic resonance (CMR) sequences are used clinically for black-blood T2-weighted imaging. However, these sequences suffer from slice inefficiency due to the non-selective inversion pulses. We propose a multi-band (MB) encoded DIR radial FSE (MB-DIR-RADFSE) technique to simultaneously excite two slices. This sequence has improved signal-to-noise ratio per unit time compared to a single slice excitation. It is also motion robust and enables the reconstruction of high-resolution black-blood T2-weighted images and T2 maps for the excited slices...
July 19, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29994302/deep-learning-techniques-for-automatic-mri-cardiac-multi-structures-segmentation-and-diagnosis-is-the-problem-solved
#4
Olivier Bernard, Alain Lalande, Clement Zotti, Frederick Cervenansky, Xin Yang, Pheng-Ann Heng, Irem Cetin, Karim Lekadir, Oscar Camara, Miguel Angel Gonzalez Ballester, Gerard Sanroma, Sandy Napel, Steffen Petersen, Georgios Tziritas, Elias Grinias, Mahendra Khened, Varghese Alex Kollerathu, Ganapathy Krishnamurthi, Marc-Michel Rohe, Xavier Pennec, Maxime Sermesant, Fabian Isensee, Paul Jager, Klaus H Maier-Hein, Chrisitan F Baumgartner, Lisa M Koch, Jelmer M Wolterink, Ivana Isgum, Yeonggul Jang, Yoonmi Hong, Jay Patravali, Shubham Jain, Olivier Humbert, Pierre-Marc Jodoin
Delineation of the left ventricular cavity, myocardium and right ventricle from cardiac magnetic resonance images (multi-slice 2D cine MRI) is a common clinical task to establish diagnosis. The automation of the corresponding tasks has thus been the subject of intense research over the past decades. In this paper, we introduce the "Automatic Cardiac Diagnosis Challenge" dataset (ACDC), the largest publicly-available and fully-annotated dataset for the purpose of Cardiac MRI (CMR) assessment. The dataset contains data from 150 multi-equipments CMRI recordings with reference measurements and classification from two medical experts...
May 17, 2018: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/29983119/fully-automated-inline-quantification-of-myocardial-blood-flow-with-cardiovascular-magnetic-resonance-repeatability-of-measurements-in-healthy-subjects
#5
Louise A E Brown, Sebastian C Onciul, David A Broadbent, Kerryanne Johnson, Graham J Fent, James R J Foley, Pankaj Garg, Pei G Chew, Kristopher Knott, Erica Dall'Armellina, Peter P Swoboda, Hui Xue, John P Greenwood, James C Moon, Peter Kellman, Sven Plein
BACKGROUND: Non-invasive assessment of myocardial ischaemia is a cornerstone of the diagnosis of coronary artery disease. Measurement of myocardial blood flow (MBF) using positron emission tomography (PET) is the current reference standard for non-invasive quantification of myocardial ischaemia. Dynamic myocardial perfusion cardiovascular magnetic resonance (CMR) offers an alternative to PET and a recently developed method with automated inline perfusion mapping has shown good correlation of MBF values between CMR and PET...
July 9, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29936910/cardiovascular-magnetic-resonance-black-blood-thrombus-imaging-for-the-diagnosis-of-acute-deep-vein-thrombosis-at-1-5-tesla
#6
Hanwei Chen, Xueping He, Guoxi Xie, Jianke Liang, Yufeng Ye, Wei Deng, Zhuonan He, Dexiang Liu, Debiao Li, Xin Liu, Zhaoyang Fan
BACKGROUND: The aim was to investigate the feasibility of a cardiovascular magnetic resonance (CMR) black-blood thrombus imaging (BBTI) technique, based on delay alternating with nutation for tailored excitation black-blood preparation and a variable flip angle turbo-spin-echo readout, for the diagnosis of acute deep vein thrombosis (DVT) at 1.5 T. METHODS: BBTI was conducted in 15 healthy subjects and 30 acute DVT patients. Contrast-enhanced CMR venography (CE-CMRV) was conducted for comparison and only performed in the patients...
June 25, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29932892/can-copeptin-and-troponin-t-ratio-predict-final-infarct-size-and-myocardial-salvage-index-in-patients-with-st-elevation-myocardial-infarction-a-sub-study-of-the-danami-3-trial
#7
Ásthildur Árnadóttir, Mikkel Schoos, Jacob Lønborg, Kiril Ahtarovski, Henning Kelbæk, Steffen Helqvist, Dan Høfsten, Peter Clemmensen, Thomas Engstrøm, Lars Nepper-Christensen, Niels Vejlstrup, Lars Køber, Kasper Iversen
BACKGROUND: Primary percutaneous coronary intervention (pPCI) is recommended in patients presenting with ST-elevation myocardial infarction (STEMI) within <12 h of symptom onset. However, patients-reported symptom duration is not always reliable. Cardiac specific troponin T (cTnT) and the endogenous stress marker copeptin have different temporal release patterns for myocardial infarction MI. We hypothesized that copeptin/troponin-ratio is associated to the duration of coronary occlusion and therefore inversely proportional to myocardial salvage...
June 19, 2018: Clinical Biochemistry
https://www.readbyqxmd.com/read/29925388/determination-of-aortic-stiffness-using-4d-flow-cardiovascular-magnetic-resonance-a-population-based-study
#8
Andreas Harloff, Hanieh Mirzaee, Thomas Lodemann, Paul Hagenlocher, Thomas Wehrum, Judith Stuplich, Anja Hennemuth, Jürgen Hennig, Sebastian Grundmann, Werner Vach
BACKGROUND: Increased aortic stiffness is an independent predictor of cardiovascular disease. Optimal measurement is highly beneficial for the detection of atherosclerosis and the management of patients at risk. Thus, it was our purpose to selectively measure aortic stiffness using a novel imaging method and to provide reference values from a population-based study. METHODS: One hundred twenty six inhabitants of Freiburg, Germany, between 20 and 80 years prospectively underwent 3 Tesla cardiovascular magnetic resonance (CMR) of the thoracic aorta...
June 21, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29898733/age-related-changes-of-right-atrial-morphology-and-inflow-pattern-assessed-using-4d-flow-cardiovascular-magnetic-resonance-results-of-a-population-based-study
#9
Thomas Wehrum, Thomas Lodemann, Paul Hagenlocher, Judith Stuplich, Ba Thanh Truc Ngo, Sebastian Grundmann, Anja Hennemuth, Jürgen Hennig, Andreas Harloff
BACKGROUND: To assess age-related changes of blood flow and geometry of the caval veins and right atrium (RA) using 4D flow cardiovascular magnetic resonance (CMR) data obtained in a population-based study. METHODS: An age-stratified sample (n = 126) of the population of the city of Freiburg, Germany, underwent transthoracic echocardiography and electrocardiogram-triggered and navigator-gated 4D flow CMR at 3 Tesla covering the caval veins and right heart...
June 14, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29850808/the-performance-of-non-invasive-tests-to-rule-in-and-rule-out-significant-coronary-artery-stenosis-in-patients-with-stable-angina-a-meta-analysis-focused-on-post-test-disease-probability
#10
Juhani Knuuti, Haitham Ballo, Luis Eduardo Juarez-Orozco, Antti Saraste, Philippe Kolh, Anne Wilhelmina Saskia Rutjes, Peter Jüni, Stephan Windecker, Jeroen J Bax, William Wijns
Aims: To determine the ranges of pre-test probability (PTP) of coronary artery disease (CAD) in which stress electrocardiogram (ECG), stress echocardiography, coronary computed tomography angiography (CCTA), single-photon emission computed tomography (SPECT), positron emission tomography (PET), and cardiac magnetic resonance (CMR) can reclassify patients into a post-test probability that defines (>85%) or excludes (<15%) anatomically (defined by visual evaluation of invasive coronary angiography [ICA]) and functionally (defined by a fractional flow reserve [FFR] ≤0...
May 29, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29808171/diffuse-cardiac-fibrosis-quantification-in-early-systemic-sclerosis-by-magnetic-resonance-imaging-and-correlation-with-skin-fibrosis
#11
Daniel C Lee, Monique E Hinchcliff, Roberto Sarnari, Madeline M Stark, Jungwha Lee, Kimberly Koloms, Aileen Hoffmann, Mary Carns, Anjali Thakrar, Kathleen Aren, John Varga, Alejandro Aquino, James C Carr, Brandon C Benefield, Sanjiv J Shah
Purpose: To evaluate the utility of cardiac magnetic resonance (CMR) T1 mapping in early systemic sclerosis (SSc) and its association with skin score. Methods: Twenty-four consecutive patients with early SSc referred for cardiovascular evaluation and 12 controls without SSc were evaluated. All patients underwent cine, T1 mapping, and late gadolinium enhanced (LGE) CMR imaging. T1 mapping indices were compared between SSc patients and controls (extracellular volume fraction [ECV], gadolinium partition coefficient [λ], pre-contrast T1, and post-contrast T1)...
June 2018: Journal of Scleroderma and related Disorders
https://www.readbyqxmd.com/read/29744617/cardiac-magnetic-resonance-assessment-of-central-and-peripheral-vascular-function-in-patients-undergoing-renal-sympathetic-denervation-as-predictor-for-blood-pressure-response
#12
Karl Fengler, Karl-Philipp Rommel, Stephan Blazek, Maximilian Von Roeder, Christian Besler, Christian Lücke, Matthias Gutberlet, Jennifer Steeden, Michael Quail, Steffen Desch, Holger Thiele, Vivek Muthurangu, Philipp Lurz
BACKGROUND: Most trials regarding catheter-based renal sympathetic denervation (RDN) describe a proportion of patients without blood pressure response. Recently, we were able to show arterial stiffness, measured by invasive pulse wave velocity (IPWV), seems to be an excellent predictor for blood pressure response. However, given the invasiveness, IPWV is less suitable as a selection criterion for patients undergoing RDN. Consequently, we aimed to investigate the value of cardiac magnetic resonance (CMR) based measures of arterial stiffness in predicting the outcome of RDN compared to IPWV as reference...
May 9, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29695254/atherosclerosis-t1-weighted-characterization-catch-evaluation-of-the-accuracy-for-identifying-intraplaque-hemorrhage-with-histological-validation-in-carotid-and-coronary-artery-specimens
#13
Wen Liu, Yibin Xie, Chuan Wang, Yanni Du, Christopher Nguyen, Zhenjia Wang, Zhaoyang Fan, Li Dong, Yi Liu, Xiaoming Bi, Jing An, Chengxiong Gu, Wei Yu, Debiao Li
BACKGROUND: Coronary high intensity plaques (CHIPs) detected using cardiovascular magnetic resonance (CMR) coronary atherosclerosis T1-weighted characterization with integrated anatomical reference (CATCH) have been shown to be positively associated with high-risk morphology observed on intracoronary optical coherence tomography (OCT). This study sought to validate whether CHIPs detected on CATCH indicate the presence of intraplaque hemorrhage (IPH) through ex vivo imaging of carotid and coronary plaque specimens, with histopathology as the standard reference...
April 26, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29669563/a-comparison-of-both-dense-and-feature-tracking-techniques-with-tagging-for-the-cardiovascular-magnetic-resonance-assessment-of-myocardial-strain
#14
J Jane Cao, Nora Ngai, Lynette Duncanson, Joshua Cheng, Kathleen Gliganic, Qizhi Chen
BACKGROUND: Myocardial strain is increasingly recognized as an important assessment for myocardial function. In addition, it also improves outcome prediction. However, there is lack of standardization in strain evaluation by cardiovascular magnetic resonance (CMR). In this study we compared strain values using multiple techniques and multiple vendor products. METHODS: Prospectively recruited patients with cardiomyopathy of diverse etiology (N = 77) and healthy controls (N = 10) underwent CMR on a 1...
April 19, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29609642/a-comprehensive-characterization-of-myocardial-and-vascular-phenotype-in-pediatric-chronic-kidney-disease-using-cardiovascular-magnetic-resonance-imaging
#15
Mun Hong Cheang, Nathaniel J Barber, Abbas Khushnood, Jakob A Hauser, Gregorz T Kowalik, Jennifer A Steeden, Michael A Quail, Kjell Tullus, Daljit Hothi, Vivek Muthurangu
BACKGROUND: Children with chronic kidney disease (CKD) have increased cardiovascular mortality. Identifying high-risk children who may benefit from further therapeutic intervention is difficult as cardiovascular abnormalities are subtle. Although transthoracic echocardiography may be used to detect sub-clinical abnormalities, it has well-known problems with reproducibility that limit its ability to accurately detect these changes. Cardiovascular magnetic resonance (CMR) is the reference standard method for assessing blood flow, cardiac structure and function...
March 29, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29605902/three-dimensional-full-automated-software-in-the-evaluation-of-the-left-ventricle-function-from-theory-to-clinical-practice
#16
Valentina Barletta, Rocio Hinojar, Alejandra Carbonell, Ariana González-Gómez, Iacopo Fabiani, Vitantonio Di Bello, José Julio Jiménez-Nacher, José Zamorano, Covadonga Fernández-Golfín
Left ventricular systolic function evaluation is an essential part of all transthoracic echocardiographic (TTE) studies. 3D echocardiography (3DE) is superior to 2D and is recommended as the method of choice. However, since it is time consuming and requires training, it is rarely performed. Different automatic analysis software tries to overcome these limitations but they need to be accurate and reproducible before they can be used clinically. The aim of this study was to test the accuracy and reproducibility of new 3D automatic quantitative software in everyday clinical practice...
August 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29605473/real-time-three-dimensional-echocardiography-of-the-left-ventricle-pediatric-percentiles-and-head-to-head-comparison-of-different-contour-finding-algorithms-a-multicenter-study
#17
Kristina Krell, Kai Thorsten Laser, Robert Dalla-Pozza, Christian Winkler, Ursula Hildebrandt, Deniz Kececioglu, Johannes Breuer, Ulrike Herberg
BACKGROUND: Real-time three-dimensional echocardiography (RT3DE) is a promising method for accurate assessment of left ventricular (LV) volumes and function, however, pediatric reference values are scarce. The aim of the study was to establish pediatric percentiles in a large population and to compare the inherent influence of different evaluation software on the resulting measurements. METHODS: In a multicenter prospective-design study, 497 healthy children (ages 1 day to 219 months) underwent RT3DE imaging of the LV (ie33, Philips, Andover, MA)...
June 2018: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29582878/value-of-transluminal-attenuation-gradient-of-stress-ccta-for-diagnosis-of-haemodynamically-significant-coronary-artery-stenosis-using-wide-area-detector-ct-in-patients-with-coronary-artery-disease-comparison-with-stress-perfusion-cmr
#18
Hee Yeong Kim, Hwan Seok Yong, Eung Ju Kim, Eun-Young Kang, Bo Kyoung Seo
INTRODUCTION: This study aimed to evaluate the value of transluminal attenuation gradient (TAG) of stress coronary computed tomography angiography (CCTA), using a wide-area detector CT in patients with coronary artery disease, compared to stress perfusion cardiac magnetic resonance (CMR) imaging. METHODS: This prospective study from May 2012 to January 2015 included 21 patients with moderate coronary stenosis on invasive coronary angiography. All patients underwent adenosine stress single-shot CCTA with a rest CCTA scan using a wide-area detector CT...
January 2018: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/29544519/noninvasive-hematocrit-assessment-for-cardiovascular-magnetic-resonance-extracellular-volume-quantification-using-a-point-of-care-device-and-synthetic-derivation
#19
Sean Robison, Gauri Rani Karur, Rachel M Wald, Paaladinesh Thavendiranathan, Andrew M Crean, Kate Hanneman
BACKGROUND: Calculation of cardiovascular magnetic resonance (CMR) extracellular volume (ECV) requires input of hematocrit, which may not be readily available. The purpose of this study was to evaluate the diagnostic accuracy of ECV calculated using various noninvasive measures of hematocrit compared to ECV calculated with input of laboratory hematocrit as the reference standard. METHODS: One hundred twenty three subjects (47.7 ± 14.1 years; 42% male) were prospectively recruited for CMR T1 mapping between August 2016 and April 2017...
March 15, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29541910/reference-ranges-of-left-ventricular-structure-and-function-assessed-by-contrast-enhanced-cardiac-mr-and-changes-related-to-ageing-and-hypertension-in-a-population-based-study
#20
Robin Bülow, Till Ittermann, Marcus Dörr, Axel Poesch, Sönke Langner, Henry Völzke, Norbert Hosten, Marc Dewey
OBJECTIVES: Reference ranges of left ventricular (LV) parameters from cardiac magnetic resonance (CMR) were established to investigate the impact of ageing and hypertension as important determinants of cardiac structure and function. METHODS: One thousand five hundred twenty-five contrast-enhanced CMRs were conducted in the Study of Health in Pomerania. LV end-diastolic volume (LVEDV), end-systolic volume (LVESV), stroke volume (LVSV), ejection fraction (LVEF), and myocardial mass (LVMM) were determined using long- and short-axis steady-state free-precession sequences...
March 14, 2018: European Radiology
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