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Non-invasive cardiology

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https://www.readbyqxmd.com/read/28717565/twenty-five-years-of-optical-coherence-tomography-the-paradigm-shift-in-sensitivity-and-speed-provided-by-fourier-domain-oct-invited
#1
Johannes F de Boer, Rainer Leitgeb, Maciej Wojtkowski
Optical coherence tomography (OCT) has become one of the most successful optical technologies implemented in medicine and clinical practice mostly due to the possibility of non-invasive and non-contact imaging by detecting back-scattered light. OCT has gone through a tremendous development over the past 25 years. From its initial inception in 1991 [Science254, 1178 (1991)] it has become an indispensable medical imaging technology in ophthalmology. Also in fields like cardiology and gastro-enterology the technology is envisioned to become a standard of care...
July 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28711164/on-estimating-intraventricular-hemodynamic-forces-from-endocardial-dynamics-a-comparative-study-with-4d-flow-mri
#2
Gianni Pedrizzetti, Per M Arvidsson, Johannes Töger, Rasmus Borgquist, Federico Domenichini, Håkan Arheden, Einar Heiberg
Intraventricular pressure gradients or hemodynamic forces, which are their global measure integrated over the left ventricular volume, have a fundamental importance in ventricular function. They may help revealing a sub-optimal cardiac function that is not evident in terms of tissue motion, which is naturally heterogeneous and variable, and can influence cardiac adaptation. However, hemodynamic forces are not utilized in clinical cardiology due to the unavailability of simple non-invasive measurement tools...
July 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28705926/incidental-nuclear-cardiology-findings-in-the-interpretation-of-myocardial-spect-imaging
#3
Razi Muzaffar, Osama Raslan, Fatma Ahmed, Leonard Goldfarb, Barbara Sterkel, Medhat M Osman
Myocardial SPECT imaging plays a crucial role in the diagnosis of coronary artery disease providing a non-invasive tool to monitor ischemia and infarction. The findings can have a profound impact in diagnosing and managing these patients. However, non-cardiac incidental findings on myocardial SPECT images can also impact the management of these patients. These non-cardiac subtleties are most often detected on the raw rotating images which are often overlooked. The intent of this pictorial essay is to illustrate several subtle non-cardiac abnormalities within nuclear cardiac imaging which can have an impact on patient management and follow-up...
July 13, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/28692375/non-invasive-imaging-in-cardiology-for-the-generalist
#4
Mark J Davies, James D Newton
In contrast to invasive techniques, the goal of non-invasive cardiac imaging is to identify or exclude heart disease in response to a patient's clinical history of cardiac localizing symptoms. Imaging also aims to establish the risk of an individual developing future heart disease with a view to preventing major cardiovascular events such as myocardial infarction. As well as a role in risk stratification, non-invasive cardiac imaging also helps with decision making for future medical and procedural interventions...
July 2, 2017: British Journal of Hospital Medicine
https://www.readbyqxmd.com/read/28687888/application-of-appropriate-use-criteria-for-initial-transthoracic-echocardiography-in-an-academic-outpatient-pediatric-cardiology-program
#5
Raya Safa, Sanjeev Aggarwal, Amrit Misra, Daisuke Kobayashi
Transthoracic echocardiography (TTE) is a non-invasive diagnostic modality for children with suspected heart disease. The American College of Cardiology published Appropriate Use Criteria (AUC) for an initial outpatient pediatric TTE in 2014 to promote effective care and improve resource utilization. The objective was to determine the appropriateness of TTE per the published AUC in a single academic pediatric cardiology clinic as a baseline performance quality measure. The echocardiography database was used to identify initial outpatient TTE in children during January-March 2014...
July 7, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28681274/re-evaluating-the-appropriateness-of-non-invasive-arterial-vascular-imaging-and-diagnostic-modalities
#6
REVIEW
Jason M Misher, Andrew M Galmer, Mitchell W Weinberg, John S Pellerito, Joe F Lau
Imaging modalities to detect and diagnose vascular disease have become increasingly popular in recent years, owing in large part to their availability and accessibility. The American College of Cardiology Foundation published a two-part Appropriate Use Criteria (AUC) guidance document for both peripheral vascular imaging and physiologic testing several years ago. In the years since their publication, a number of important studies have challenged previously held beliefs about appropriateness of vascular diagnostic testing...
August 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28610773/contrast-induced-acute-kidney-injury-in-interventional-cardiology-emerging-evidence-and-unifying-mechanisms-of-protection-by-remote-ischemic-conditioning
#7
REVIEW
Adebayo C Atanda, Oladipupo Olafiranye
Contrast-induced acute kidney injury (CI-AKI) is a common complication of many diagnostic and therapeutic cardiovascular procedures. It is associated with longer in-hospital stay, more complicated hospitalization course, and higher in-hospital morbidity and mortality. With increasing use of contrast media in various diagnostic and interventional procedures, the prevalence of CI-AKI is expected to rise. Although pre-hydration with intravenous normal saline is recommended in patients with elevated risk of CI-AKI, this approach is often not feasible in many clinical settings...
June 6, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28606999/invasive-management-strategies-and-antithrombotic-treatments-in-patients-with-non-st-segment-elevation-acute-coronary-syndrome-in-china-findings-from-the-improving-ccc-project-care-for-cardiovascular-disease-in-china
#8
Qing Yang, Ying Wang, Jing Liu, Jun Liu, Yongchen Hao, Sidney C Smith, Yong Huo, Gregg C Fonarow, Changsheng Ma, Junbo Ge, Kathryn A Taubert, Louise Morgan, Yang Guo, Wei Wang, Yujie Zhou, Dong Zhao
BACKGROUND: Early invasive strategies and antithrombotic treatments are key treatments of non-ST-segment-elevation acute coronary syndrome (NSTE-ACS). Few studies have examined the use of these strategies in patients with NSTE-ACS in China. This study aimed to assess the applications of invasive strategies and antithrombotic treatments in patients with NSTE-ACS and compare their outcomes. METHODS AND RESULTS: A nationwide registry study, Improving CCC (Care for Cardiovascular Disease in China) ACS project, was launched in 2014 as a collaborative study of the American Heart Association and Chinese Society of Cardiology (CSC), with 142 participating hospitals reporting details of clinical management and outcomes of patients with NSTE-ACS...
June 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28567710/the-preoperative-cardiology-consultation-indications-and-risk-modification
#9
M W Groot, A Spronk, S E Hoeks, R J Stolker, F van Lier
BACKGROUND: The cardiologist is regularly consulted preoperatively by anaesthesiologists. However, insights into the efficiency and usefulness of these consultations are unclear. METHODS: This is a retrospective study of 24,174 preoperatively screened patients ≥18 years scheduled for elective non-cardiac surgery, which resulted in 273 (1%) referrals to the cardiologist for further preoperative evaluation. Medical charts were reviewed for patient characteristics, main reason for referring, requested diagnostic tests, interventions, adjustment in medical therapy, 30-day mortality and major adverse cardiac events...
May 31, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28559848/efficient-fetal-maternal-ecg-signal-separation-from-two-channel-maternal-abdominal-ecg-via-diffusion-based-channel-selection
#10
Ruilin Li, Martin G Frasch, Hau-Tieng Wu
There is a need for affordable, widely deployable maternal-fetal ECG monitors to improve maternal and fetal health during pregnancy and delivery. Based on the diffusion-based channel selection, here we present the mathematical formalism and clinical validation of an algorithm capable of accurate separation of maternal and fetal ECG from a two channel signal acquired over maternal abdomen. The proposed algorithm is the first algorithm, to the best of the authors' knowledge, focusing on the fetal ECG analysis based on two channel maternal abdominal ECG signal, and we apply it to two publicly available databases, the PhysioNet non-invasive fECG database (adfecgdb) and the 2013 PhysioNet/Computing in Cardiology Challenge (CinC2013), to validate the algorithm...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28540209/myocardial-blood-flow-quantification-for-evaluation-of-coronary-artery-disease-by-computed-tomography
#11
REVIEW
Filippo Cademartiri, Sara Seitun, Alberto Clemente, Ludovico La Grutta, Patrizia Toia, Giuseppe Runza, Massimo Midiri, Erica Maffei
During the last decade coronary computed tomography angiography (CTA) has become the preeminent non-invasive imaging modality to detect coronary artery disease (CAD) with high accuracy. However, CTA has a limited value in assessing the hemodynamic significance of a given stenosis due to a modest specificity and positive predictive value. In recent years, different CT techniques for detecting myocardial ischemia have emerged, such as CT-derived fractional flow reserve (FFR-CT), transluminal attenuation gradient (TAG), and myocardial CT perfusion (CTP) imaging...
April 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28510718/multimodality-imaging-in-restrictive-cardiomyopathies-an-eacvi-expert-consensus-document-in-collaboration-with-the-working-group-on-myocardial-and-pericardial-diseases-of-the-european-society-of-cardiology-endorsed-by-the-indian-academy-of-echocardiography
#12
Gilbert Habib, Chiara Bucciarelli-Ducci, Alida L P Caforio, Nuno Cardim, Philippe Charron, Bernard Cosyns, Aurélie Dehaene, Genevieve Derumeaux, Erwan Donal, Marc R Dweck, Thor Edvardsen, Paola Anna Erba, Laura Ernande, Oliver Gaemperli, Maurizio Galderisi, Julia Grapsa, Alexis Jacquier, Karin Klingel, Patrizio Lancellotti, Danilo Neglia, Alessia Pepe, Pasquale Perrone-Filardi, Steffen E Petersen, Sven Plein, Bogdan A Popescu, Patricia Reant, L Elif Sade, Erwan Salaun, Riemer H J A Slart, Christophe Tribouilloy, Jose Zamorano
Restrictive cardiomyopathies (RCMs) are a diverse group of myocardial diseases with a wide range of aetiologies, including familial, genetic and acquired diseases and ranging from very rare to relatively frequent cardiac disorders. In all these diseases, imaging techniques play a central role. Advanced imaging techniques provide important novel data on the diagnostic and prognostic assessment of RCMs. This EACVI consensus document provides comprehensive information for the appropriateness of all non-invasive imaging techniques for the diagnosis, prognostic evaluation, and management of patients with RCM...
May 16, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28444638/nuclear-cardiology-are-we-using-the-right-protocols-and-tracers-the-right-way
#13
REVIEW
Maurizio Dondi, Thomas Pascual, Diana Paez, Andrew J Einstein
The field of nuclear cardiology has changed considerably over recent years, with greater attention paid to safety and radiation protection issues. The wider usage of technetium-99m (Tc-99m)-labeled radiopharmaceuticals for single-photon emission computed tomography (SPECT) imaging using gamma cameras has contributed to better quality studies and lower radiation exposure to patients. Increased availability of tracers and scanners for positron emission tomography (PET) will help further improve the quality of studies and quantify myocardial blood flow and myocardial flow reserve, thus enhancing the contribution of non-invasive imaging to the management of coronary artery disease...
April 25, 2017: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
https://www.readbyqxmd.com/read/28429135/clinical-characteristics-of-patients-with-suspected-cardiac-chest-pain-and-angiographically-normal-coronary-arteries-in-a%C3%A2-secondary-care-hospital
#14
T S de Lange, R Y G Tijssen, P Damman, P F M M van Bergen
BACKGROUND: An important number of patients with suspected cardiac chest pain have non-obstructive coronary artery disease. Our purpose was to describe the clinical characteristics of patients with normal or near-normal coronary arteries in routine cardiological practice in a secondary care hospital. METHODS: In 2013, consecutive patients referred for invasive coronary angiography with suspected cardiac chest pain were analysed at a single-centre (Westfriesgasthuis, Hoorn, the Netherlands)...
June 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28320749/sex-differences-in-percutaneous-coronary-intervention-insights-from-the-coronary-angiography-and-pci-registry-of-the-german-society-of-cardiology
#15
Tobias Heer, Matthias Hochadel, Karin Schmidt, Julinda Mehilli, Ralf Zahn, Karl-Heinz Kuck, Christian Hamm, Michael Böhm, Georg Ertl, Hans Martin Hoffmeister, Stefan Sack, Jochen Senges, Steffen Massberg, Anselm K Gitt, Uwe Zeymer
BACKGROUND: Several studies have suggested sex-related differences in diagnostic and invasive therapeutic coronary procedures. METHODS AND RESULTS: Data from consecutive patients who were enrolled in the Coronary Angiography and PCI Registry of the German Society of Cardiology were analyzed. We aimed to compare sex-related differences in in-hospital outcomes of patients undergoing percutaneous coronary intervention (PCI) for stable coronary artery disease, non-ST elevation acute coronary syndromes, ST elevation myocardial infarction, and cardiogenic shock...
March 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28277804/cardiac-imaging-working-towards-fully-automated-machine-analysis-interpretation
#16
REVIEW
Piotr J Slomka, Damini Dey, Arkadiusz Sitek, Manish Motwani, Daniel S Berman, Guido Germano
Non-invasive imaging plays a critical role in managing patients with cardiovascular disease. Although subjective visual interpretation remains the clinical mainstay, quantitative analysis facilitates objective, evidence-based management, and advances in clinical research. This has driven developments in computing and software tools aimed at achieving fully automated image processing and quantitative analysis. In parallel, machine learning techniques have been used to rapidly integrate large amounts of clinical and quantitative imaging data to provide highly personalized individual patient-based conclusions...
March 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28210991/extraction-of-fetal-ecg-signal-by-an-improved-method-using-extended-kalman-smoother-framework-from-single-channel-abdominal-ecg-signal
#17
D Panigrahy, P K Sahu
This paper proposes a five-stage based methodology to extract the fetal electrocardiogram (FECG) from the single channel abdominal ECG using differential evolution (DE) algorithm, extended Kalman smoother (EKS) and adaptive neuro fuzzy inference system (ANFIS) framework. The heart rate of the fetus can easily be detected after estimation of the fetal ECG signal. The abdominal ECG signal contains fetal ECG signal, maternal ECG component, and noise. To estimate the fetal ECG signal from the abdominal ECG signal, removal of the noise and the maternal ECG component presented in it is necessary...
March 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28154582/is-carotid-artery-ultrasound-still-useful-method-for-evaluation-of-atherosclerosis
#18
REVIEW
Gee-Hee Kim, Ho-Joong Youn
Carotid ultrasound is an imaging modality that allows non-invasive assessment of vascular anatomy and function. Carotid intima-media thickness (IMT) has been shown to predict cardiovascular (CV) risk in multiple large studies. However, in 2013, American College of Cardiology/American Heart Association guidelines designated that the carotid IMT as class III evidence level was not recommended for use in clinical practice as a routine measurement of risk assessment for a first atherosclerotic CV event. Following the announcement of this guideline, combined common carotid IMT and plaque, including plaque tissue characterization and plaque burden, using 3D ultrasound was reported to be better than either measurement alone in a variety of studies...
January 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28148317/echocardiography-of-coarctation-of-the-aorta-aortic-arch-hypoplasia-and-arch-interruption-strategies-for-evaluation-of-the-aortic-arch
#19
REVIEW
Suma P Goudar, Sanket S Shah, Girish S Shirali
Aim Echocardiography is the modality of choice for the diagnosis and serial follow-up of aortic arch pathology. In this article, we review the types of obstruction of the aortic arch, various classification schemes of coarctation of the aorta and interrupted aortic arch, methodology for optimal echocardiographic imaging of the aortic arch, and key echocardiographic measurements for accurate diagnosis of obstruction and hypoplasia of the aortic arch. Finally, we will discuss the limitations of echocardiography in optimal imaging of the aortic arch and the use of other non-invasive imaging modalities such as CT or MRI to provide additional information in these cases...
December 2016: Cardiology in the Young
https://www.readbyqxmd.com/read/28089498/anticoagulants-in-ischemia-guided-management-of-non-st-elevation-acute-coronary-syndromes
#20
REVIEW
Martin Mayer
BACKGROUND: The most recent joint guidelines from the American Heart Association (AHA) and American College of Cardiology (ACC) on the management of non-ST-elevation acute coronary syndromes (NSTE-ACS) are a result of a substantial and considered undertaking, and those involved deserve much recognition for their efforts. However, the handling of anticoagulants seems somewhat inadequate, and this is a highly-relevant matter when managing NSTE-ACS. OBJECTIVE OF THE REVIEW: Among areas of potential uncertainty, emergency medicine professionals might still be left wondering about the particulars of anticoagulant therapy when pursuing ischemia-guided management of NSTE-ACS (that is, managing NSTE-ACS without an intent for early invasive measures, such as coronary angiography and revascularization)...
March 2017: American Journal of Emergency Medicine
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