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Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology

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https://www.readbyqxmd.com/read/29790017/machine-learning-in-the-integration-of-simple-variables-for-identifying-patients-with-myocardial-ischemia
#1
Luis Eduardo Juarez-Orozco, Remco J J Knol, Carlos A Sanchez-Catasus, Octavio Martinez-Manzanera, Friso M van der Zant, Juhani Knuuti
BACKGROUND: A significant number of variables are obtained when characterizing patients suspected with myocardial ischemia or at risk of MACE. Guidelines typically use a handful of them to support further workup or therapeutic decisions. However, it is likely that the numerous available predictors maintain intrinsic complex interrelations. Machine learning (ML) offers the possibility to elucidate complex patterns within data to optimize individual patient classification. We evaluated the feasibility and performance of ML in utilizing simple accessible clinical and functional variables for the identification of patients with ischemia or an elevated risk of MACE as determined through quantitative PET myocardial perfusion reserve (MPR)...
May 22, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29777483/a-tale-of-two-phases-can-the-worst-of-scans-become-the-best-of-scans-with-motion-correction
#2
EDITORIAL
Ian S Armstrong, Matthew J Memmott
No abstract text is available yet for this article.
May 18, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29777482/stress-for-a-stressed-out-heart-classic-cardiac-pet-findings-in-takotsubo-cardiomyopathy
#3
Chonyang L Albert, Khendi T White, Paul C Cremer, Wael A Jaber
No abstract text is available yet for this article.
May 18, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29777481/positron-emission-tomography-for-diagnosis-of-prosthetic-valve-endocarditis
#4
Vidhu Anand, Panithaya Chareonthaitawee, Martin Rodriguez-Porcel
No abstract text is available yet for this article.
May 18, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29777480/the-evolving-landscape-of-nuclear-imaging-in-cardiac-amyloidosis
#5
EDITORIAL
Steven J Promislow, Terrence D Ruddy
No abstract text is available yet for this article.
May 18, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29766447/optimizing-radionuclide-protocols-dotting-our-i-s-and-crossing-our-t-s
#6
EDITORIAL
Niti R Aggarwal
No abstract text is available yet for this article.
May 15, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29761309/is-there-a-role-for-cardiac-positron-emission-tomography-in-hypertrophic-cardiomyopathy
#7
Paco E Bravo
Coronary microvascular dysfunction and, its functional consequence, myocardial ischemia are common pathologic features in patients with hypertrophic cardiomyopathy (HCM). Both have been commonly invoked as potential triggers of and/or contributors to the underlying pathophysiological processes leading to heart failure, and malignant ventricular arrhythmias. Positron emission tomography (PET) with myocardial blood flow quantification provides a unique opportunity to evaluate the integrity and function of the coronary microcirculation in HCM...
May 14, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29761308/can-positron-emission-tomography-help-stratify-the-risk-of-sudden-cardiac-death-in-patients-with-hypertrophic-cardiomyopathy
#8
EDITORIAL
G Neal Kay
No abstract text is available yet for this article.
May 14, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29752640/multimodality-imaging-of-the-left-ventricle-choosing-soundly
#9
EDITORIAL
Russell D Rosenberg, Pravin V Patil
No abstract text is available yet for this article.
May 11, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29748874/correction-to-acc-aats-aha-ase-asnc-scai-scct-sts-2017-appropriate-use-criteria-for-coronary-revascularization-in-patients-with-stable-ischemic-heart-disease
#10
Manesh R Patel, John H Calhoon, Gregory J Dehmer, James Aaron Grantham, Thomas M Maddox, David J Maron, Peter K Smith
To more clearly reflect the relationship between iFR (instantaneous wave-free ratio) and FFR (fractional flow reserve), this Correction document highlights the following changes to the original document published in the Journal of Nuclear Cardiology; the version available at JACC [1] has been updated to reflect the changes, with JACC's Correction document available at [2].
May 10, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29736616/cardiac-mri-for-the-evaluation-of-oncologic-cardiotoxicity
#11
Adrián I Löffler, Michael Salerno
Cancer therapeutics-related cardiac dysfunction (CTRCD) is a well-established adverse effect resulting from a number of cancer therapeutics. Newer immunotherapy has been associated with cardiomyopathy and myocarditis making comprehensive imaging useful for early recognition. Cardiac MRI (CMR) offers a comprehensive evaluation to detect CTRCD. Established guidelines for monitoring left ventricular ejection fraction for potential cardiotoxicity have recently incorporated CMR. We will review the utility of CMR in contemporary evaluation for potential oncologic cardiotoxicity...
May 7, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29721764/18-fdg-pet-in-a-patient-cohort-suspected-for-cardiac-sarcoidosis-right-ventricular-uptake-is-associated-with-pathological-uptake-in-mediastinal-lymph-nodes
#12
Heikki Tuominen, Atte Haarala, Antti Tikkakoski, Mika Kähönen, Kjell Nikus, Kalle Sipilä
INTRODUCTION: In up to 65% of cardiac sarcoidosis patients, the disease is confined to the heart. Diagnosing isolated cardiac sarcoidosis is challenging due to the low sensitivity of endomyocardial biopsy. If cardiac sarcoidosis is part of biopsy-confirmed systemic sarcoidosis, the diagnosis can be based on cardiac imaging studies. We compared the imaging features of patients with isolated cardiac FDG uptake on positron emission tomography with those who had findings indicative of systemic sarcoidosis...
May 2, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29717407/simultaneous-determination-of-dynamic-cardiac-metabolism-and-function-using-pet-mri
#13
Gregory P Barton, Lauren Vildberg, Kara Goss, Niti Aggarwal, Marlowe Eldridge, Alan B McMillan
BACKGROUND: Cardiac metabolic changes in heart disease precede overt contractile dysfunction. However, metabolism and function are not typically assessed together in clinical practice. The purpose of this study was to develop a cardiac positron emission tomography/magnetic resonance (PET/MR) stress test to assess the dynamic relationship between contractile function and metabolism in a preclinical model. METHODS: Following an overnight fast, healthy pigs (45-50 kg) were anesthetized and mechanically ventilated...
May 1, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29713892/what-is-this-image-2018-image-1
#14
(no author information available yet)
No abstract text is available yet for this article.
April 30, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29700689/imaging-inflammation-in-atherosclerotic-plaques-just-make-it-easy
#15
EDITORIAL
Fabien Hyafil, Jonathan Vigne
The presence of inflammatory cells is a hallmark of unstable atherosclerotic plaques. Several imaging approaches have been developed for the noninvasive detection of inflammatory activities in atherosclerotic plaques. Positron emission tomography (PET) imaging with the injection of 18F-fluorodeoxyglucose (FDG) is currently the most widely used imaging technique to evaluate the density of activated macrophages in atherosclerotic plaques. Nevertheless, FDG-PET imaging has logistical and technical constraints that represent an important obstacle to the wider use of this approach for the evaluation of patients with atherosclerosis...
April 26, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29696486/iodine-123-metaiodobenzylguanidine-cardiac-spect-imaging-in-the-qualification-of-heart-failure-patients-for-icd-implantation
#16
EDITORIAL
Anna Teresińska
No abstract text is available yet for this article.
April 25, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29696485/relationship-between-microvascular-changes-autonomic-denervation-and-myocardial-fibrosis-in-chagas-cardiomyopathy-evaluation-by-mri-and-spect-imaging
#17
Gustavo Canavaci Barizon, Marcus Vinicius Simões, André Schmidt, Leonardo Pippa Gadioli, Luiz Otávio Murta Junior
BACKGROUND: The relationship between microvasculopathy, autonomic denervation, and myocardial fibrosis, in Chagas cardiomyopathy is incompletely understood. The aim of this study was to explore the relative extent and anatomic distribution of myocardial hypoperfusion, autonomic denervation, and myocardial scarring using Single-Photon Emission Computerized Tomography (SPECT) imaging and Magnetic Resonance Imaging (MRI). METHODS: Thirteen patients with Chagas disease all had Iodine-123-metaiodobenzylguanidine (MIBG) SPECT, 99m Tc-Sestamibi (MIBI) rest-stress SPECT, and gadolinium late enhancement MRI imaging within a 2-month interval...
April 25, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29696484/determining-post-test-risk-in-a-national-sample-of-stress-nuclear-myocardial-perfusion-imaging-reports-implications-for-natural-language-processing-tools
#18
Andrew E Levy, Nishant R Shah, Michael E Matheny, Ruth M Reeves, Glenn T Gobbel, Steven M Bradley
BACKGROUND: Reporting standards promote clarity and consistency of stress myocardial perfusion imaging (MPI) reports, but do not require an assessment of post-test risk. Natural Language Processing (NLP) tools could potentially help estimate this risk, yet it is unknown whether reports contain adequate descriptive data to use NLP. METHODS: Among VA patients who underwent stress MPI and coronary angiography between January 1, 2009 and December 31, 2011, 99 stress test reports were randomly selected for analysis...
April 25, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29687292/sex-and-age-differences-in-the-association-of-heart-rate-responses-to-adenosine-and-myocardial-ischemia-in-patients-undergoing-myocardial-perfusion-imaging
#19
Catherine Gebhard, Michael Messerli, Christine Lohmann, Valerie Treyer, Susan Bengs, Dominik C Benz, Andreas A Giannopoulos, Ken Kudura, Elia von Felten, Moritz Schwyzer, Oliver Gaemperli, Christoph Gräni, Aju P Pazhenkottil, Ronny R Buechel, Philipp A Kaufmann
BACKGROUND: In light of growing cardiovascular mortality rates observed in young women, sexual dimorphism in cardiac autonomic nervous control is gaining increasing attention. Heart rate responses to adenosine mirror autonomic activity and may carry important prognostic information. METHODS AND RESULTS: Hemodynamic changes during adenosine stress were retrospectively analysed in a propensity-matched cohort of 1932 consecutive patients undergoing myocardial perfusion single-photon-emission computed tomography (MPI-SPECT)...
April 23, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29679222/warranty-period-of-normal-stress-myocardial-perfusion-imaging-in-hypertensive-patients-a-parametric-survival-analysis
#20
Wanda Acampa, Francesco Rozza, Emilia Zampella, Roberta Assante, Teresa Mannarino, Carmela Nappi, Ciro Mainolfi, Mario Petretta, Bruno Trimarco, Alberto Cuocolo
BACKGROUND: We evaluated the warranty period of a normal stress myocardial perfusion single-photon emission computed tomography (MPS) in hypertensive patients. METHODS AND RESULTS: A total of 471 consecutive hypertensive patients with suspected coronary artery disease and normal perfusion at stress MPS were followed for a mean of 76 ± 21 months. Endpoint events were cardiac death or nonfatal myocardial infarction. With Cox analysis, age (hazard ratio 1.1, P < ...
April 20, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
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