keyword
MENU ▼
Read by QxMD icon Read
search

Coronary CTA

keyword
https://www.readbyqxmd.com/read/27909273/-minimally-invasive-coronary-artery-bypass-grafting-using-bilateral-in-situ-internal-thoracic-arteries
#1
Akihiko Yamauchi, Masaki Tabuchi, Shinya Terada, Keita Kikuchi
A 73-year-old male with diabetes mellitius was referred to our hospital for coronary artery bypass grafting (CABG). Preoperative coronary angiography revealed three-vessel coronary disease. Minimally invasive coronary artery grafting (MICS CABG) via left thoracotomy was selected to decrease surgical site infection due to severe diabetes. In situ bilateral internal thoracic arteries (BITA) were harvested using a long type Harmonic scalpel. In situ right internal thorac artery( RITA)-left anterior descending artery (LAD), in situ left internal thorac artery( LITA)-high lateral branch (HL), and aorta-saphenous vein graft (SVG)-#4 posterior descending artery were performed...
December 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27896495/accuracy-of-coronary-computed-tomography-angiography-for-bioresorbable-scaffold-luminal-investigation-a-comparison-with-optical-coherence-tomography
#2
Carlos Collet, Yohei Sotomi, Rafael Cavalcante, Taku Asano, Yosuke Miyazaki, Erhan Tenekecioglu, Pieter Kistlaar, Yaping Zeng, Pannipa Suwanasson, Robbert J de Winter, Koen Nieman, Patrick W Serruys, Yoshinobu Onuma
To establish the accuracy of coronary computed tomography angiography (CTA) for in-scaffold quantitative evaluation with optical coherence tomography (OCT) as a reference. The translucent backbone of the bioresorbable scaffold allow us to evaluate non-invasively the coronary lumen with coronary CTA. In the ABSORB first-in-man studies, coronary CTA was shown to be feasible for quantitative luminal assessment. Nevertheless, a comparison with an intravascular modality with higher resolution has never been performed...
November 28, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27885414/clinical-implementation-of-an-emergency-department-coronary-computed-tomographic-angiography-protocol-for-triage-of-patients-with-suspected-acute-coronary-syndrome
#3
Brian B Ghoshhajra, Richard A P Takx, Pedro V Staziaki, Harshna Vadvala, Phillip Kim, Tomas G Neilan, Nandini M Meyersohn, Daniel Bittner, Sumbal A Janjua, Thomas Mayrhofer, Jeffrey L Greenwald, Quyhn A Truong, Suhny Abbara, David F M Brown, James L Januzzi, Sanjeev Francis, John T Nagurney, Udo Hoffmann
OBJECTIVES: To evaluate the efficiency and safety of emergency department (ED) coronary computed tomography angiography (CTA) during a 3-year clinical experience. METHODS: Single-center registry of coronary CTA in consecutive ED patients with suspicion of acute coronary syndrome (ACS). The primary outcome was efficiency of coronary CTA defined as the length of hospitalization. Secondary endpoints of safety were defined as the rate of downstream testing, normalcy rates of invasive coronary angiography (ICA), absence of missed ACS, and major adverse cardiac events (MACE) during follow-up, and index radiation exposure...
November 24, 2016: European Radiology
https://www.readbyqxmd.com/read/27872849/automated-segmentation-of-coronary-arteries-based-on-statistical-region-growing-and-heuristic-decision-method
#4
Yun Tian, Yutong Pan, Fuqing Duan, Shifeng Zhao, Qingjun Wang, Wei Wang
The segmentation of coronary arteries is a vital process that helps cardiovascular radiologists detect and quantify stenosis. In this paper, we propose a fully automated coronary artery segmentation from cardiac data volume. The method is built on a statistics region growing together with a heuristic decision. First, the heart region is extracted using a multi-atlas-based approach. Second, the vessel structures are enhanced via a 3D multiscale line filter. Next, seed points are detected automatically through a threshold preprocessing and a subsequent morphological operation...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27866279/high-risk-carotid-plaques-identified-by-ct-angiogram-can-predict-acute-myocardial-infarction
#5
Wassim Mosleh, Keenan Adib, Punnanithinont Natdanai, Andres Carmona-Rubio, Roshan Karki, Jacienta Paily, Mohamed Abdel-Aal Ahmed, Sujit Vakkalanka, Narasa Madam, Gregory D Gudleski, Charles Chung, Umesh C Sharma
Prior studies identified the incremental value of non-invasive imaging by CT-angiogram (CTA) to detect high-risk coronary atherosclerotic plaques. Due to their superficial locations, larger calibers and motion-free imaging, the carotid arteries provide the best anatomic access for the non-invasive characterization of atherosclerotic plaques. We aim to assess the ability of predicting obstructive coronary artery disease (CAD) or acute myocardial infarction (MI) based on high-risk carotid plaque features identified by CTA...
November 19, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27861382/single-injection-protocol-for-coronary-and-lower-extremity-ct-angiographies-in-patients-suspected-for-peripheral-arterial-disease
#6
Ashish Khandelwal, Takeshi Kondo, Makoto Amanuma, Akitsugu Oida, Tomonari Sano, Saboo S Sachin, Shinichi Takase, Frank J Rybicki, Kanako K Kumamaru
To evaluate the feasibility of a single injection protocol for coronary CT angiography (CTA) and lower extremity CTA in patients suspected for peripheral arterial disease (PAD).This prospective observational study included a total of 103 patients who showed an ankle brachial index ≤0.9 and underwent the single injection protocol for coronary and lower extremity CTA. All CTAs used iodinated contrast (weight × 0.06 mL/s × 20 seconds). A prospective Electrocardiogram (ECG)-gated coronary CTA was performed, followed by helical lower extremity CTA beginning 9 seconds after coronary CTA...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27858923/echocardiographic-diagnosis-of-anomalous-pulmonary-venous-connections-experience-of-84-cases-from-1-medical-center
#7
Ziming Zhang, Li Zhang, Feng Xie, Bing Wang, Zhengxing Sun, Shuangshuang Kong, Xinfang Wang, Nianguo Dong, Guohua Wang, Qing Lv, Yuman Li, Ling Li, Mingxing Xie
We sought to evaluate the value of echocardiography in the diagnosis of different types of anomalous pulmonary venous connections (APVCs) and summarize the diagnostic experience. A total of 84 patients with APVC were confirmed by surgery (n = 82) or computerized tomography angiography (CTA) (n = 2) in the last 6 years (2008-2014) at the Wuhan Union Hospital. The total anomalous pulmonary venous connection (TAPVC) cases account for 60.7%, and partial anomalous pulmonary venous connection (PAPVC) cases account for 39...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27832419/temporal-averaging-for-analysis-of-four-dimensional-whole-heart-computed-tomography-perfusion-of-the-myocardium-proof-of-concept-study
#8
S Feger, A Shaban, S Lukas, C Kendziorra, M Rief, E Zimmermann, M Dewey
To assess the feasibility of four-dimensional (4D) whole-heart computed tomography perfusion (CTP) of the myocardium and the added value of temporal averaging of consecutive 3D datasets from different heartbeats for analysis. We included 30 patients with suspected or known coronary artery disease (CAD) who underwent 320-row coronary CT angiography (CTA) and myocardial CTP. Out of these, 15 patients underwent magnetic resonance myocardial perfusion imaging (MR MPI). All CTP examinations were initiated after 3 min of intravenous infusion of adenosine (140 µg/kg/min) and were performed dynamically covering the entire heart every heart beat over a period of 20 ± 3 heart beats...
November 10, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27811151/computed-tomographic-perfusion-improves-diagnostic-power-of-coronary-computed-tomographic-angiography-in-women-analysis-of-the-core320-trial-coronary-artery-evaluation-using-320-row-multidetector-computed-tomography-angiography-and-myocardial-perfusion-according
#9
Ashritha Penagaluri, Angela Y Higgins, Andrea L Vavere, Julie M Miller, Armin Arbab-Zadeh, Aisha Betoko, Chloe Steveson, Elke Zimmermann, Christopher Cox, Carlos E Rochitte, Marc Dewey, Klaus F Kofoed, Hiroyuki Niinuma, Marcelo F Di Carli, João A C Lima, Marcus Y Chen
BACKGROUND: Coronary computed tomographic angiography (CTA) and myocardial perfusion imaging (CTP) is a validated approach for detection and exclusion of flow-limiting coronary artery disease (CAD), but little data are available on gender-specific performance of these modalities. In this study, we aimed to evaluate the diagnostic accuracy of combined coronary CTA and CTP in detecting flow-limiting CAD in women compared with men. METHODS AND RESULTS: Three hundred and eighty-one patients who underwent both CTA-CTP and single-photon emission computed tomography myocardial perfusion imaging preceding invasive coronary angiography as part of the CORE320 multicenter study (Coronary Artery Evaluation Using 320-row Multidetector Computed Tomography Angiography and Myocardial Perfusion) were included in this ancillary study...
November 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27800080/-giant-congenital-intrapericardial-left-atrial-appendage-aneurysm-about-a-case-and-review-of-the-literature
#10
Bouchra Zhari, Habib Bellamlih, Hassan Boumdine, Touriya Amil, Mehdi Bamous, Hassan En-Nouali
Left atrial appendage aneurysm is a very rare heart anomaly. It may be congenital or acquired, secondary to inflammatory or degenerative processes. Most cases are asymptomatic. The prevalence of these lesions in pediatric age has been very rarely reported. As it can cause potentially fatal arrhythmias or thrombus, surgery is required immediately after diagnosis. This study reports the case of a 14-year-old boy with rapidly progressive dyspnea, palpitations, sensation of repetitive dizziness and fainting, in whom congenital left atrial appendage aneurysm was detected...
2016: Pan African Medical Journal
https://www.readbyqxmd.com/read/27796852/functional-compared-to-anatomical-imaging-in-the-initial-evaluation-of-patients-with-suspected-coronary-artery-disease-an-international-multi-center-randomized-controlled-trial-iaea-spect-cta-study
#11
Ganesan Karthikeyan, Barbara Guzic Salobir, Borut Jug, Niveditha Devasenapathy, Erick Alexanderson, Joao Vitola, Otakar Kraft, Elgin Ozkan, Saket Sharma, Gaurav Purohit, Maja Dolenc Novak, Aloha Meave, Sergio Trevethan, Rodrigo Cerci, Sandra Zier, Lucia Gotthardtová, Tomáš Jonszta, Timucin Altin, Cigdem Soydal, Chetan Patel, Gurpreet Gulati, Diana Paez, Maurizio Dondi, Ravi Kashyap
OBJECTIVE: To test the hypothesis that, in the initial evaluation of patients with suspected coronary artery disease (CAD), stress myocardial perfusion imaging (MPI) would result in less downstream testing than coronary computed tomographic angiography (CCTA). METHODS: In this international, randomized trial, mildly symptomatic patients with an intermediate likelihood of having CAD, and asymptomatic patients at intermediate risk of cardiac events, underwent either initial stress-rest MPI or CCTA...
October 28, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/27796815/assessment-of-endothelial-shear-stress-in-patients-with-mild-or-intermediate-coronary-stenoses-using-coronary-computed-tomography-angiography-comparison-with-invasive-coronary-angiography
#12
Dexiao Huang, Takashi Muramatsu, Yingguang Li, Wenjie Yang, Yasuomi Nagahara, Miao Chu, Pieter Kitslaar, Masayoshi Sarai, Yukio Ozaki, Yiannis S Chatzizisis, Fuhua Yan, Johan H C Reiber, Renhua Wu, Jun Pu, Shengxian Tu
Characterization of endothelial shear stress (ESS) may allow for prediction of the progression of atherosclerosis. The aim of this investigation was to develop a non-invasive approach for in vivo assessment of ESS by coronary computed tomography angiography (CTA) and to compare it with ESS derived from invasive coronary angiography (ICA). A total of 41 patients with mild or intermediate coronary stenoses who underwent both CTA and ICA were included in the analysis. Two geometrical models of the interrogated vessels were reconstructed separately from CTA and ICA images...
October 31, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27789151/acute-cerebral-artery-occlusion-by-a-calcified-embolus-with-false-patency-sign-on-computed-tomographic-angiography
#13
Atsuhito Uneda, Takahiro Kanda, Kenta Suzuki, Koji Hirashita, Masatoshi Yunoki, Kimihiro Yoshino
Computed tomographic angiography (CTA) is a quick and accurate method in triage to determine recanalization therapies for acute ischemic stroke. To minimize delay in the start of recanalization therapies, performance of CTA immediately after unenhanced brain computed tomography (CT) is recommended as the minimum standard. However, there are some pitfalls related to image interpretation of CTA in acute stroke, such as false patency sign. We describe the case of a 66-year-old man who presented with acute middle cerebral artery (MCA) occlusion by a calcified embolus with false patency sign on CTA after coronary angiography...
October 24, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27780758/scct-guidelines-for-the-performance-and-acquisition-of-coronary-computed-tomographic-angiography-a-report-of-the-society-of-cardiovascular-computed-tomography-guidelines-committee-endorsed-by-the-north-american-society-for-cardiovascular-imaging-nasci
#14
Suhny Abbara, Philipp Blanke, Christopher D Maroules, Michael Cheezum, Andrew D Choi, B Kelly Han, Mohamed Marwan, Chris Naoum, Bjarne L Norgaard, Ronen Rubinshtein, Paul Schoenhagen, Todd Villines, Jonathon Leipsic
In response to recent technological advancements in acquisition techniques as well as a growing body of evidence regarding the optimal performance of coronary computed tomography angiography (coronary CTA), the Society of Cardiovascular Computed Tomography Guidelines Committee has produced this update to its previously established 2009 "Guidelines for the Performance of Coronary CTA" (1). The purpose of this document is to provide standards meant to ensure reliable practice methods and quality outcomes based on the best available data in order to improve the diagnostic care of patients...
November 2016: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/27773634/diagnostic-accuracy-of-static-ct-perfusion-for-the-detection-of-myocardial-ischemia-a-systematic-review-and-meta-analysis
#15
Mathias Holm Sørgaard, Klaus Fuglsang Kofoed, Jesper James Linde, Richard Thomas George, Carlos Eduardo Rochitte, Gudrun Feuchtner, Joao A C Lima, Jawdat Abdulla
OBJECTIVES: The aim of this study is to provide a meta-analysis of all published studies assessing the diagnostic accuracy of stress CT myocardial perfusion imaging (CTP) in patients suspected of or with known coronary artery disease. This analysis is limited to static stress CTP. METHODS: Systematic literature review and meta-analysis of studies examining the diagnostic accuracy of static CTP imaging alone or combined with coronary CT angiography (CTA) in comparison to single photon emission computed tomography (SPECT), magnetic resonance perfusion (MRP), and/or invasive coronary angiography with and without fractional flow reserve (FFR)...
October 15, 2016: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/27771404/impact-of-intensive-ldl-cholesterol-lowering-on%C3%A2-coronary-artery-atherosclerosis-progression-a-serial-ct-angiography-study
#16
Sanghoon Shin, Hyung-Bok Park, Hyuk-Jae Chang, Reza Arsanjani, James K Min, Yong-Jin Kim, Byoung Kwon Lee, Jung-Hyun Choi, Geu-Ru Hong, Namsik Chung
OBJECTIVES: The aim of this study was to explore the relationship between temporal changes in coronary plaque volume and the intensity of lipid-lowering treatments, utilizing coronary computed tomography angiography (CTA). BACKGROUND: Coronary CTA has acceptable accuracy in terms of quantitative measurement of plaque volume. Although, coronary CTA is perhaps capable of identifying the differences in plaque volume progression according to the intensity of lipid lowering treatment, to date, few studies have examined this notion...
October 14, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27771399/noninvasive-ct-derived-ffr-based-on%C3%A2-structural-and%C3%A2-fluid-analysis-a-comparison-with-invasive-ffr-for-detection-of-functionally-significant-stenosis
#17
Brian S Ko, James D Cameron, Ravi K Munnur, Dennis T L Wong, Yasuko Fujisawa, Takuya Sakaguchi, Kenji Hirohata, Jacqui Hislop-Jambrich, Shinichiro Fujimoto, Kazuhisa Takamura, Marcus Crossett, Michael Leung, Ahilan Kuganesan, Yuvaraj Malaiapan, Arthur Nasis, John Troupis, Ian T Meredith, Sujith K Seneviratne
OBJECTIVES: This study describes the feasibility and accuracy of a novel computed tomography (CT) fractional flow reserve (FFR) technique based on alternative boundary conditions. BACKGROUND: Techniques used to compute FFR based on images acquired from coronary computed tomography angiography (CTA) are described. Boundary conditions were typically determined by allometric scaling laws and assumptions regarding microvascular resistance. Alternatively, boundary conditions can be derived from the structural deformation of coronary lumen and aorta, although its accuracy remains unknown...
October 14, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27760911/vessel-visibility-assessment-of-low-tube-voltage-coronary-computed-tomography-angiography-determined-with-contrast-to-noise-ratio
#18
Yoriaki Matsumoto, Takanori Masuda, Yukari Yamashita, Takayuki Oku, Hirofumi Uyama, Tomoyasu Sato, Naoyuki Imada
PURPOSE: The purpose of this study was to investigate the association of vessel visibility and radiation dose using contrast-to-noise ratio (CNR) method with low tube voltage in coronary computed tomography angiography (c-CTA). METHODS: We performed electrocardiogram-gated scan of 2.0-mm diameter simulated vessel in the center of the cardiac phantom by the use of a 64-detector CT scanner. Reference CNR was calculated from the target coronary CT number (CTnumberA; 350 Hounsfield units [HU]), epicardial fat CT number (CTnumberB; -100 HU), and target epicardial fat standard deviation (SD) number (SDB; 25 HU) at the 120 kV...
2016: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/27743953/ffr-derived-from%C3%A2-coronary-ct-angiography-in%C3%A2-nonculprit%C3%A2-lesions-of-patients-with%C3%A2-recent%C3%A2-stemi
#19
Sara Gaur, Charles A Taylor, Jesper M Jensen, Hans Erik Bøtker, Evald H Christiansen, Anne K Kaltoft, Niels R Holm, Jonathon Leipsic, Christopher K Zarins, Stephan Achenbach, Sophie Khem, Alan Wilk, Hiram G Bezerra, Jens F Lassen, Bjarne L Nørgaard
OBJECTIVES: This study sought to determine the diagnostic performance of noninvasive fractional flow reserve (FFR) derived from coronary computed tomography angiography (CTA) (FFRCT) for the diagnosis of lesion-specific ischemia in nonculprit vessels of patients with recent in ST-segment elevation myocardial infarction (STEMI). BACKGROUND: In patients with stable angina, FFRCT has high diagnostic performance in identification of ischemia-causing lesions. The potential value of FFRCT for assessment of multivessel disease in patients with recent STEMI has not been evaluated...
October 6, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27717753/clinical-and-prognostic-correlates-of-pulmonary-congestion-in-coronary-computed-tomography-angiography-data-sets
#20
J Tobias Kühl, Thomas S Kristensen, Anna F Thomsen, Louise Hindsø, Kristoffer L Hansen, Olav W Nielsen, Henning Kelbæk, Klaus F Kofoed
BACKGROUND: Signs of pulmonary congestion obtained from cardiac computed tomography angiographic (coronary CTA) images have not previously been related to clinical congestion or outcome and the clinical value is, therefore, unknown. Our objective was to test the hypothesis that signs of pulmonary congestion predict clinical heart failure and adverse outcome in patients with myocardial infarction. METHODS: Coronary CTA was performed before invasive treatment in 400 prospectively included patients with non ST segment elevation myocardial infarction in an observational study...
September 15, 2016: Journal of Cardiovascular Computed Tomography
keyword
keyword
7385
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"