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Coronary ct angiography

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https://www.readbyqxmd.com/read/29046005/-coronary-computed-tomography-instead-of-catheter-angiography-no
#1
Fikret Er
The need for coronary computed tomography (CTA) is still a matter of discussion. Areas in which CTA can replace invasive coronary angiography are rare. More data is needed to precise in which clinical settings CTA might be beneficial.
October 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29046004/-coronary-computed-tomography-angiography-in-patients-with-stable-coronary-artery-disease
#2
Helen Ullrich, Tommaso Gori
The guidelines on the management of stable coronary artery disease (SCAD) recommend the use of coronary computed tomography angiography (CTA) in the process of diagnosing coronary artery disease in patients with low intermediate pre-test probability for SCAD. Particularly in cases where stress electrocardiogram or stress imaging provides unclear results, a computed tomographic examination can be considered as a reliable alternative to invasive coronary angiography. Due to its high negative predictive value, coronary CTA can provide accurate information on the presence of coronary artery stenosis and thus coronary artery disease can be reliably excluded without the risks associated with invasive procedures...
October 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29046002/-optimal-diagnostics-and-therapy-for-microvascular-angina-pectoris
#3
Peter Ong, Udo Sechtem
Patients with microvascular angina are characterized by angina pectoris with proof of myocardial ischemia in the absence of any relevant epicardial stenosis and without myocardial disease (type 1 coronary microvascular dysfunction according to Crea and Camici). Structural and functional alterations of the coronary microvessels (diameter < 500 µm) are the reason for this phenomenon. Frequently such alterations are associated with cardiovascular risk factors. Patients with angina pectoris without epicardial stenoses represent for 10 - 50 % of all patients undergoing coronary angiography depending on the clinical presentation...
October 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29045612/fractional-flow-reserve-and-myocardial-perfusion-by-computed-tomography-a-guide-to-clinical-application
#4
Joanne D Schuijf, Brian S Ko, Marcelo F Di Carli, Jacqueline Hislop-Jambrich, Abdul-Rahman Ihdayhid, Sujith K Seneviratne, João A C Lima
The aim of this paper is to provide a guide to the clinical application of the functional computed tomography (CT) techniques fractional flow reserve (CT FFR) and myocardial perfusion (CTP) in patients presenting for the evaluation of coronary artery disease (CAD). Both techniques have recently been introduced to complement coronary CT angiography (CTA) with physiological information. Evidence supporting their diagnostic accuracy accumulates at a fast pace, and both techniques are moving from research tools to clinical applications for specific subgroups of patients...
October 17, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29044562/myocardial-bridging-a-meta-analysis-of-prevalence
#5
Sorin Hostiuc, Ionuț Negoi, Mugurel C Rusu, Mihaela Hostiuc
The main objective of this article was to analyze prevalence data about myocardial bridging (MB) in published studies. To this purpose, we performed a meta-analysis of studies published in English literature that contained data about the prevalence of MB and its anatomical characteristics. The overall prevalence was 19% (CI: 17-21%); autopsy studies revealed an overall prevalence of 42% (CI: 30-55%), CT studies 22% (CI: 18-25%), and coronary angiography 6% (CI: 5-8%). Most bridges were located on the left anterior descending artery (82% overall, 63% on autopsy studies), had a mean thickness of 2...
October 16, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29042949/angina-in-granulomatosis-with-polyangiitis-a-case-report
#6
Huijie Dong, Dayuan Lou, Xiaofei Ji, Peng Qu
Granulomatosis with polyangiitis (GPA) often causes small blood vessel lesions in multiple organs, with less impact on large vessels. We report a case involving not only large blood vessels, but also angina. The computed tomographic angiography of large vessels and vascular ultrasonography of the extremity also suggested great arteries of the body were involved. Further cytoplasmic antineutrophil cytoplasmic antibody tests, pathological examination and dynamic chest computed tomography scan confirmed the diagnosis of GPA...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29042790/evaluation-of-vitamin-d-levels-in-relation-to-coronary-ct-angiographic-findings-in-an-iranian-population
#7
Maryam Moradi, Ali Foroutanfar
BACKGROUND: Vitamin D deficiency, as a predisposing factor for coronary artery disease (CAD), is a subject of increasing interest. However, its role as a risk factor has not been proven. This study aimed to investigate the relationship between serum vitamin D levels and CAD. MATERIALS AND METHODS: Using a cross-sectional design, 180 patients who were candidates for coronary computed tomography angiography (CCTA) were selected. Serum levels of vitamin D were measured and compared with the results of CCTA (including calcium score, and presence and severity of coronary artery involvement due to atherosclerotic plaques)...
2017: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/29039828/-clinical-laboratory-and-instrumental-criteria-for-myocarditis-established-in-comparison-with-myocardial-biopsy-a-non-invasive-diagnostic-algorithm
#8
O V Blagova, Yu V Osipova, A V Nedostup, E A Kogan, V A Sulimov
AIM: To determine the diagnostic value of different clinical, laboratory, and instrumental signs in the diagnosis of myocarditis in patients with the picture of idiopathic arrhythmias, dilated cardiomyopathy (DCM) and in a comparison group when comparing with myocardial morphological examination. SUBJECTS AND METHODS: A study group included 100 patients (35 women; mean age, 44.7±12.5 years) with idiopathic arrhythmias (n=20) and DCM as a syndrome (n=100). All underwent myocardial morphological examination: endomyocardial biopsy (EMB) (n=71), intraoperative biopsy (n=13), study of the explanted heart (n=6), and autopsy (n=11)...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/29038153/prospective-validation-of-a-biomarker-based-rule-out-strategy-for-functionally-relevant-coronary-artery-disease
#9
Joan E Walter, Ursina Honegger, Christian Puelacher, Deborah Mueller, Max Wagener, Nicolas Schaerli, Ivo Strebel, Raphael Twerenbold, Jasper Boeddinghaus, Thomas Nestelberger, Lorraine Sazgary, Stella Marbot, Jeanne du Fay de Lavallaz, Christoph Kaiser, Stefan Osswald, Damian Wild, Katharina Rentsch, Michael Zellweger, Tobias Reichlin, Christian Mueller
BACKGROUND: This study aimed to prospectively advance a rule-out strategy for functionally significant coronary artery disease (CAD) by use of high-sensitivity cardiac troponin I (hs-cTnI) from bench to bedside, by application of a 3-step approach: validation in serum, correlation in plasma, and application on a clinical platform. METHODS: Patients without known CAD referred for rest/stress myocardial perfusion single-photon emission tomography/computer tomography (MPI-SPECT/CT) were assigned to 3 consecutive cohorts: validation, correlation, and application...
October 16, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/29037610/coronary-intramural-hematoma-visualized-on-multislice-ct-angiography
#10
Marcelo Trivi, Agustina Sciancalepore, Lucrecia Burgos
No abstract text is available yet for this article.
October 13, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/29034066/novel-spect-technologies-and-approaches-in-cardiac-imaging
#11
Piotr Slomka, Guang-Uei Hung, Guido Germano, Daniel S Berman
Recent novel approaches in myocardial perfusion single photon emission CT (SPECT) have been facilitated by new dedicated high-efficiency hardware with solid-state detectors and optimized collimators. New protocols include very low-dose (1 mSv) stress-only, two-position imaging to mitigate attenuation artifacts, and simultaneous dual-isotope imaging. Attenuation correction can be performed by specialized low-dose systems or by previously obtained CT coronary calcium scans. Hybrid protocols using CT angiography have been proposed...
December 1, 2016: Cardiovasc Innov Appl
https://www.readbyqxmd.com/read/29032716/prediction-of-coronary-plaque-progression-using-biomechanical-factors-and-vascular-characteristics-based-on-computed-tomography-angiography
#12
Xiujian Liu, Guanghui Wu, Chuangye Xu, Yuna He, Lixia Shu, Yuyang Liu, Nan Zhang, Changyan Lin
OBJECTIVES: Coronary atherosclerotic plaques progress in a highly individual manner. Accurately predicting plaque progression will promote clinical management of atherosclerosis. The purpose of this study was to investigate the role of local biomechanics factors and vascular characteristics in coronary plaque progression and arterial remodeling. METHODS: Computed tomography angiography-based three-dimensional reconstruction of the native right coronary artery was performed in vivo in twelve patients with acute coronary syndrome at baseline and 12-month follow-up...
October 16, 2017: Computer Assisted Surgery (Abingdon, England)
https://www.readbyqxmd.com/read/29027093/long-term-prognostic-value-of-coronary-computed-tomography-angiography
#13
REVIEW
Takor B Arrey-Mbi, Seth M Klusewitz, Todd C Villines
Coronary CT angiography (CTA) is a highly accurate test for the diagnosis of coronary artery disease (CAD), with its use guided by numerous contemporary appropriate use criteria and clinical guidelines. Unique among non-invasive tests for CAD, coronary CTA provides direct visualization of coronary atherosclerosis for the assessment of angiographic stenosis, as well as validated measures of plaque vulnerability. Long-term studies now clearly demonstrate that the absence of CAD on coronary CTA identifies a patient that is at very low risk for future cardiovascular events...
October 12, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29025029/ct-coronary-imaging-a-fast-evolving-world
#14
Prabhakar Rajiah, Suhny Abbara
Computed tomography (CT) has become an important modality in the evaluation of coronary artery disease (CAD). The tremendous technological advances in CT in the last two decades has made it possible to obtain high quality images of coronary arteries with high spatial and temporal resolutions. Multiple trials have confirmed the accuracy of CT compared to invasive catheter angiography. CT is also able to evaluate beyond the lumen in characterizing and quantifying atherosclerotic plaques, including evaluation of high risk features...
September 4, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/29022741/diagnostic-accuracy-of-in-stent-restenosis-using-model-based-iterative-reconstruction-at-coronary-ct-angiography-initial-experience
#15
Fuminari Tatsugami, Toru Higaki, Hiroaki Sakane, Yuko Nakamura, Makoto Iida, Yasutaka Baba, Chikako Fujioka, Atsuhiro Senoo, Toshiro Kitagawa, Hideya Yamamoto, Yasuki Kihara, Kazuo Awai
OBJECTIVE: The purpose of our study was to compare the diagnostic performance of coronary CT angiography (CTA) subjected to model-based iterative reconstruction (IR) or hybrid IR to rule out coronary in-stent restenosis. METHODS: We enrolled 16 patients who harbored 22 coronary stents. They underwent coronary CTA on a 320-slice CT scanner. The images were reconstructed with hybrid IR (AIDR 3D) and model-based IR (FIRST) algorithms. We calculated the stent lumen attenuation increase ratio (SAIR) and measured the visible stent lumen diameter...
October 12, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29016370/heavily-calcified-coronary-arteries-advanced-calcium-subtraction-improves-luminal-visualization-and-diagnostic-confidence-in-dual-energy-coronary-computed-tomography-angiography
#16
Domenico De Santis, Kwang Nam Jin, U Joseph Schoepf, Katharine L Grant, Carlo N De Cecco, John W Nance, Thomas J Vogl, Andrea Laghi, Moritz H Albrecht
OBJECTIVES: The aim of this study was to evaluate a prototype dual-energy computed tomography calcium subtraction algorithm and its impact on luminal visualization in patients with heavily calcified coronary arteries. MATERIALS AND METHODS: Twenty-nine patients (62% male; mean age, 64 ± 7 years) who had undergone dual-energy coronary computed tomography angiography were retrospectively included in this institutional review board-approved, Health Insurance Portability and Accountability Act-compliant study...
October 9, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28993347/interrupted-aortic-arch-complicated-with-takotsubo-cardiomyopathy-mimicking-aortic-dissection
#17
Farhala Mari Baloch, Javed Majid Tai, Aamir Hameed Khan, Abdul Baqi
A 50-year-old man presented to the emergency department with interscapular pain, diaphoresis and restlessness. Initial examination raised the possibility of aortic dissection; however, the CT scan did not concur with the diagnosis. An ECG showed ST segment elevation in leads V1-V6 and echocardiography showed severe left ventricular systolic dysfunction. Coronary angiography through the right femoral artery was attempted but the diagnostic catheter could not be advanced to the ascending aorta. Radiocontrast injection showed complete obstruction of the descending aorta...
October 9, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28993120/coronary-lumen-volume-to-myocardial-mass-ratio-in-primary-microvascular-angina
#18
Rominder Grover, Jonathon A Leipsic, John Mooney, Shaw-Hua Kueh, Mickael Ohana, Bjarne L Nᴓrgaard, Ashkan Eftekhari, Jeroen J Bax, Darra T Murphy, Cameron J Hague, Michael A Seidman, Philipp Blanke, Tara Sedlak, Stephanie L Sellers
BACKGROUND: Microvascular angina (MVA) is an incompletely understood clinical entity. Computational analysis of coronary Computed Tomography Angiography (CTA) has shown an association between low coronary lumen volume to myocardial mass (V/M) ratio and lower Fractional Flow Reserve values, independent of plaque measures. We hypothesized that low V/M ratio may be present in patients with MVA. METHODS: A retrospective case-control analysis was performed using patients fulfilling guideline criteria for MVA with controls matched for age, gender, coronary risk factors and atherosclerotic plaque burden...
September 22, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28993037/reversible-stress-cardiomyopathy-secondary-to-aneurysmal-subarachnoid-hemorrhage-a-case-report
#19
Konstantinos Lampropoulos, Evangelos Giannoulis, Bazoukis George, Gary Tse, Epameinondas Triantafyllou, Athanasios Triantafyllou
BACKGROUND: Acute cerebral incidents have been correlated with cardiac manifestations. Specifically, subarachnoid hemorrhage has been correlated with a syndrome described as neurogenic stress cardiomyopathy and mimics acute coronary syndrome. CASE REPORT: A 55-year-old woman presented at the Emergency Department of our hospital complaining of vomiting and headache of sudden onset. Computed tomography angiography revealed a ruptured aneurysm at the tip of the basilar artery and the patient underwent a successful complete embolism of the sac of the aneurysm...
October 6, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28990944/the-opinion-of-turkish-cardiologists-on-current-malpractice-system-and-an-alternative-patient-compensation-system-proposal-pcs-study-group
#20
Ayhan Olcay, Sadık Volkan Emren, Gamze Babür Güler, Ekrem Güler, Vedat Ertunç, Rida Berilgen, Abdullah Aslan, Ersin Çağrı Şimşek, Şükriye Ebru Gölcük, Kıvanç Yalın
OBJECTIVE: Cardiologists participate in the diagnosis and interventional treatment of numerous high-risk patients. The goal of this study was to investigate how the current malpractice system in Turkey influences cardiologists' diagnostic and interventional behavior and to obtain their opinions about an alternative patient compensation system. METHODS: The present cross-sectional study assessed the practice of defensive medicine among cardiologists who are actively working in various types of workplace within the Turkish healthcare system...
October 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
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