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Coronary ct angiography

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https://www.readbyqxmd.com/read/29222954/evaluation-of-motion-artifact-metrics-for-coronary-ct-angiography
#1
Hongfeng Ma, Eric Gros, Aniko Szabo, Scott G Baginski, Zachary R Laste, Naveen M Kulkarni, Darin Okerlund, Taly G Schmidt
PURPOSE: This study quantified the performance of coronary artery motion artifact metrics relative to human observer ratings. Motion artifact metrics have been used as part of motion correction and best-phase selection algorithms for Coronary Computed Tomography Angiography (CCTA). However, the lack of ground truth makes it difficult to validate how well the metrics quantify the level of motion artifact. This study investigated five motion artifact metrics, including two novel metrics, using a dynamic phantom, clinical CCTA images, and an observer study that provided ground truth motion artifact scores from a series of pairwise comparisons...
December 9, 2017: Medical Physics
https://www.readbyqxmd.com/read/29222675/accuracy-of-computed-tomography-for-selecting-the-revascularization-method-based-on-syntax-score-ii
#2
Si Eun Lee, Kyunghwa Han, Jin Hur, Young Jin Kim, Hye-Jeong Lee, Yoo Jin Hong, Dong Jin Im, Byoung Wook Choi
OBJECTIVES: The application of SYNTAX score II based on coronary CT angiography (CCTA) for selecting further treatment options has not been studied. This study aimed to investigate the diagnostic performance of CCTA combined with SYNTAX score II for selecting the revascularization method compared with invasive coronary angiography (ICA) based on 2014 European Society of Cardiology (ESC)/European Association for Cardio-Thoracic Surgery (EACTS) guidelines. METHODS: From January-May 2011, 160 patients who underwent both CCTA and ICA within 30 interval days were included...
December 8, 2017: European Radiology
https://www.readbyqxmd.com/read/29218817/impact-of-a-shared-decision-making-intervention-on-healthcare-utilization-a-secondary-analysis-of-the-chest-pain-choice-multicenter-randomized-trial
#3
Jason T Schaffer, Erik P Hess, Judd E Hollander, Jeffrey A Kline, Carlos A Torres, Deborah B Diercks, Russell Jones, Kelly P Owen, Zachary F Meisel, Michel Demers, Annie Leblanc, Jonathan Inselman, Jeph Herrin, Victor M Montori, Nilay D Shah
BACKGROUND: Patients at low risk for acute coronary syndrome (ACS) are frequently admitted for observation and cardiac testing, resulting in substantial burden and cost to the patient and the healthcare system. OBJECTIVES: The purpose of this investigation was to measure the effect of the Chest Pain Choice decision aid (CPC) on overall healthcare utilization as well as utilization of specific services both during the index emergency department visit and in the subsequent 45 days...
December 8, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/29218617/evaluation-of-an-adaptive-detector-collimation-for-prospectively-ecg-triggered-coronary-ct-angiography-with-third-generation-dual-source-ct
#4
Michael Messerli, Patricia Dewes, Jan-Erik Scholtz, Christophe Arendt, Simon Wildermuth, Thomas J Vogl, Ralf W Bauer
OBJECTIVES: To investigate the impact of an adaptive detector collimation on the dose parameters and accurateness of scan length adaption at prospectively ECG-triggered sequential cardiac CT with a wide-detector third-generation dual-source CT. METHODS: Ideal scan lengths for human hearts were retrospectively derived from 103 triple-rule-out examinations. These measures were entered into the new scanner operated in prospectively ECG-triggered sequential cardiac scan mode with three different detector settings: (1) adaptive collimation, (2) fixed 64 × 0...
December 7, 2017: European Radiology
https://www.readbyqxmd.com/read/29217341/coronary-artery-disease-reporting-and-data-system-cad-radstm-inter-observer-agreement-for-assessment-categories-and-modifiers
#5
Christopher D Maroules, Christian Hamilton-Craig, Kelley Branch, James Lee, Roberto C Cury, Pál Maurovich-Horvat, Ronen Rubinshtein, Dustin Thomas, Michelle Williams, Yanshu Guo, Ricardo C Cury
BACKGROUND: The Coronary Artery Disease Reporting and Data System (CAD-RADS) provides a lexicon and standardized reporting system for coronary CT angiography. OBJECTIVES: To evaluate inter-observer agreement of the CAD-RADS among an panel of early career and expert readers. METHODS: Four early career and four expert cardiac imaging readers prospectively and independently evaluated 50 coronary CT angiography cases using the CAD-RADS lexicon...
December 5, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29217171/what-is-the-utility-of-coronary-computed-tomography-angiography-compared-with-standard-of-care-for-the-evaluation-of-acute%C3%A2-chest%C3%A2-pain
#6
EDITORIAL
Michael Gottlieb, Chase Socha
No abstract text is available yet for this article.
December 4, 2017: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/29216483/additional-prognostic-value-of-brachial-ankle-pulse-wave-velocity-to-coronary-computed-tomography-angiography-in-patients-with-suspected-coronary-artery-disease
#7
In-Chang Hwang, Kwang Nam Jin, Hack-Lyoung Kim, You-Nui Kim, Moon-Sun Im, Woo-Hyun Lim, Jae-Bin Seo, Sang-Hyun Kim, Joo-Hee Zo, Myung-A Kim
BACKGROUND AND AIMS: Increased arterial stiffness is associated with a higher risk of future cardiovascular events. We aimed to investigate whether information about arterial stiffness provides additional prognostic value to coronary computed tomography angiography (CCTA) findings. METHODS: A total of 523 consecutive patients (mean age, 58.0 ± 10.3 years; male, 60.6%) with suspected coronary artery disease (CAD), who underwent CCTA and brachial-ankle pulse wave velocity (baPWV) measurement within a month, were retrospectively analyzed...
December 1, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29216309/coronary-to-pulmonary-artery-fistula-in-adults-evaluation-with-thallium-201-myocardial-perfusion-spect
#8
Seul Ki Lee, Jung Im Jung, Joo Hyun O, Hwan Wook Kim, Ho Joong Youn
OBJECTIVES: With the increasing use of multi-detector CT, the number of detected cases with coronary-to-pulmonary artery fistula (CPAF) has increased. Several previous studies reported severe cases of angina, but no appropriate tests to evaluate myocardial perfusion for patients with CPAF have been established. We evaluated the hemodynamic characteristics of CPAF using thallium-201 (Tl-201) single photon emission computed tomography (SPECT). MATERIALS AND METHODS: Tl-201 SPECT was performed in 17 patients with CPAF, but without evidence of coronary artery disease on coronary computed tomography angiography (CCTA) (age, 58...
2017: PloS One
https://www.readbyqxmd.com/read/29215469/multimodality-coronary-imaging-to-predict-periprocedural-myocardial-necrosis-after-an-elective-percutaneous-coronary-intervention
#9
Masahiro Hoshino, Taishi Yonetsu, Tadashi Murai, Yoshihisa Kanaji, Eisuke Usui, Masao Yamaguchi, Masahiro Hada, Rikuta Hamaya, Yoshinori Kanno, Tetsumin Lee, Tsunekazu Kakuta
BACKGROUND: Although multiple imaging modalities have been tested to predict periprocedural myocardial necrosis (PMN), the superior predictive efficacy of these imaging findings has not been established fully. We sought to evaluate which findings of the coronary imaging tools would best provide predictive efficacy of PMN among optical coherence tomography (OCT), intravascular ultrasound (IVUS), and coronary computed tomography (CCT) angiography. PATIENTS AND METHODS: A total of 130 patients with stable angina pectoris who underwent OCT, IVUS, and CCT examinations for a single de-novo preprocedural lesion were investigated...
December 5, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/29214082/congenital-absence-of-left-circumflex-artery-a-case-report-and-review-of-the-literature
#10
Setri Fugar, Lydia Issac, Alexis Kofi Okoh, Christelle Chedrawy, Nadia El Hangouche, Neha Yadav
Congenital absence of the left circumflex artery is a rare coronary anomaly with few reported cases in the literature. These patients are usually diagnosed incidentally when they undergo coronary angiography or coronary CT to rule out underlying coronary artery disease. In this article, we report a case of a 46-year-old man who was incidentally found to have a congenitally absent left circumflex artery with a superdominant right coronary artery after a workup was initiated for frequent premature ventricular contractions and regional wall motion on echocardiogram...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/29207432/-sonography-of-the-optic-nerve-a-new-bedside-tool-in-intensive-care
#11
Christopher Hohmann, Konrad R Koch, Roman Pfister, Guido Michels
History and clinical findings Here, we present the case history of a 76-year old man with out-of-hospital cardiac arrest due to a cardiogenic shock and a consecutive no-flow-time of approximately 10 minutes. After 25 minutes of resuscitation procedures a spontaneous return of circulation could be established. The patient was admitted to our center for emergency coronary angiography. After coronary stenting the patient was admitted to our intensive care unit and treated in accordance with the guidelines on cardiogenic shock due to myocardial infarction...
December 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29203262/computed-tomography-coronary-angiography-for-evaluation-of-children-with-kawasaki-disease
#12
Manphool Singhal, Surjit Singh, Pankaj Gupta, Avinash Sharma, Niranjan Khandelwal, Jane C Burns
OBJECTIVE: We sought to assess the feasibility of computed tomography coronary angiography (CTCA) on a 128-slice, dual source scanner in children with acute and convalescent phase Kawasaki disease (KD). MATERIALS AND METHODS: A prospective study of 49 children with KD (12 at presentation and 37 in the convalescent phase) was conducted between November 2013 and April 2015. CTCA was performed with either prospective (n = 37) or retrospective (n = 12) electrocardiographic gating...
October 23, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/29198572/acute-myocardial-infarction-as-the-initial-manifestation-of-delayed-bioprosthesis-thrombosis-after-transcatheter-aortic-valve-replacement
#13
Yi-Jian Li, Yan-Biao Liao, Xin Wei, Yuan Feng, Mao Chen
Bioprosthesis thrombosis after transcatheter aortic valve replacement (TAVR) raised concerns about further clinical events. We report the case of a patient who suffered acute myocardial infarction (AMI) after TAVR for 3 years. Thrombosis was confirmed in the right coronary sinus of Valsalva by transthoracic echocardiography. Coronary angiography demonstrated the ostium of the right coronary artery was occluded. As an attempt to perform percutaneous coronary intervention (PCI) was unsuccessful, long-term therapeutic anticoagulation with warfarin was undertaken...
November 14, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29197253/deep-learning-analysis-of-the-myocardium-in-coronary-ct-angiography-for-identification-of-patients-with-functionally-significant-coronary-artery-stenosis
#14
Majd Zreik, Nikolas Lessmann, Robbert W van Hamersvelt, Jelmer M Wolterink, Michiel Voskuil, Max A Viergever, Tim Leiner, Ivana Išgum
In patients with coronary artery stenoses of intermediate severity, the functional significance needs to be determined. Fractional flow reserve (FFR) measurement, performed during invasive coronary angiography (ICA), is most often used in clinical practice. To reduce the number of ICA procedures, we present a method for automatic identification of patients with functionally significant coronary artery stenoses, employing deep learning analysis of the left ventricle (LV) myocardium in rest coronary CT angiography (CCTA)...
November 26, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/29197025/german-cardiac-ct-registry-indications-procedural-data-and-clinical-consequences-in-7061-patients-undergoing-cardiac-computed-tomography
#15
Mohamed Marwan, Stephan Achenbach, Grigorios Korosoglou, Axel Schmermund, Steffen Schneider, Oliver Bruder, Jörg Hausleiter, Stephen Schroeder, Sebastian Barth, Sebastian Kerber, Alexander Leber, Werner Moshage, Jochen Senges
Cardiac computed tomography permits quantification of coronary calcification as well as detection of coronary artery stenoses after contrast enhancement. Moreover, cardiac CT offers high-resolution morphologic and functional imaging of cardiac structures which is valuable for various structural heart disease interventions and electrophysiology procedures. So far, only limited data exist regarding the spectrum of indications, image acquisition parameters as well as results and clinical consequences of cardiac CT examinations using state-of-the-art CT systems in experienced centers...
December 1, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29195843/influence-of-irregular-heart-rhythm-on-radiation-exposure-image-quality-and-diagnostic-impact-of-cardiac-computed-tomography-angiography-in-4-339-patients-data-from-the-german-cardiac-computed-tomography-registry
#16
Grigorios Korosoglou, Mohamed Marwan, Sorin Giusca, Axel Schmermund, Steffen Schneider, Oliver Bruder, Jörg Hausleiter, Stephen Schroeder, Alexander Leber, Tobias Limbourg, Gitsios Gitsioudis, Johannes Rixe, Ralf Zahn, Hugo A Katus, Stephan Achenbach, Jochen Senges
BACKGROUND: Coronary computed tomography angiography (coronary CTA) provides non-invasive evaluation of the coronary arteries with high precision for the detection of significant coronary artery disease (CAD). AIM: To investigate whether irregular heart rhythm including atrial fibrillation and premature beats during data acquisition influences (i) radiation and contrast media exposure, (ii) number of non-evaluable coronary segments and (iii) diagnostic impact of coronary CTA...
November 21, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29195841/incidental-pulmonary-nodules-in-emergent-coronary-ct-angiography-for-suspected-acute-coronary-syndrome-impact-of-revised-2017-fleischner-society-guidelines
#17
Jan-Erik Scholtz, Michael T Lu, Sandeep Hedgire, Nina M Meyersohn, George R Oliveira, Anand M Prabhakar, Rajiv Gupta, Mannudeep K Kalra, Jo-Anne O Shepard, Udo Hoffmann, Brian B Ghoshhajra
BACKGROUND: Pulmonary nodules (PN) are frequently detected incidentally during coronary computed tomography angiography (CTA). We evaluated whether the 2017 Fleischner Society guidelines may result in a decrease of follow-up testing of incidental PN as compared to prior guidelines in patients undergoing coronary CTA. METHODS: We conducted a retrospective study of a registry of emergency department patients who underwent coronary CTA for acute coronary syndrome assessment between 2012 and 2017...
November 14, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29195787/high-risk-plaque-and-calcification-detected-by-coronary-ct-angiography-to-predict-future-cardiovascular-events-after-percutaneous-coronary-intervention
#18
Nobuo Tomizawa, Kodai Yamamoto, Shinichi Inoh, Takeshi Nojo, Sunao Nakamura
RATIONALE AND OBJECTIVES: The purpose of this study was to investigate whether high-risk plaque (HRP) and calcium assessed by coronary computed tomography (CT) could predict future cardiovascular events after second-generation drug-eluting stent (DES) placement. MATERIALS AND METHODS: We analyzed 317 patients from December 2012 to April 2015 who underwent coronary CT followed by DES placement. HRP was defined as a plaque with positive remodeling and low attenuation or a plaque with a napkin-ring sign...
November 29, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29193860/higher-coronary-plaque-burden-in-psoriatic-arthritis-is-independent-of-metabolic-syndrome-and-associated-with-underlying-disease-severity
#19
Agnes Szentpetery, Gerard M Healy, Darragh Brady, Muhammad Haroon, Phil Gallagher, Ciaran E Redmond, Hannah Fleming, John Duignan, Jonathan D Dodd, Oliver FitzGerald
OBJECTIVES: To examine the effect of metabolic syndrome (Metsy) and psoriatic disease-related variables on coronary plaque burden in psoriatic arthritis (PsA) patients. METHODS: 50 PsA patients without symptoms of coronary artery disease (CAD) (25 with Metsy and 25 without (NMetsy)) and 50 age and sex-matched controls underwent 64-slice coronary CT angiography (CCTA). Plaque localisation, segment involvement score (SIS), stenosis severity score (SSS) and total plaque volume (TPV) were calculated...
November 28, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29189397/patterns-of-coronary-calcification-and-their-impact-on-the-diagnostic-accuracy-of-computed-tomography-coronary-angiography
#20
Dariusz Noll, Mariusz Kruk, Marcin Demkow, Jerzy Pręgowski, Edyta Kaczmarska, Karolina Kryczka, Radosław Pracoń, Zofia Dzielińska, Justyna Śleszycka, Adam Witkowski, Witold Rużyłło, Cezary Kępka
OBJECTIVE: Despite coronary calcifications being a major factor affecting the diagnostic accuracy of coronary computed tomography angiography (CTA), there is a lack of established criteria for categorizing calcifications. We aimed to evaluate patterns of coronary calcification based on quantitative radiodensity and size parameters to provide coronary calcium categories and assess their impact on the accuracy of coronary CTA. METHODS AND RESULTS: We analyzed length, maximum thickness, volume, mean density, and maximum density of coronary calcium and divided each of these parameters into tertiles...
November 16, 2017: Journal of Computer Assisted Tomography
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