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Coronary CTA

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https://www.readbyqxmd.com/read/29778864/plaque-morphology-as-predictor-of-late-plaque-events-in-patients-with-asymptomatic-type-2-diabetes-a-long-term-observational-study
#1
David A Halon, Idit Lavi, Ofra Barnett-Griness, Ronen Rubinshtein, Barak Zafrir, Mali Azencot, Basil S Lewis
OBJECTIVES: We used coronary computed tomography angiography (CTA) to determine plaque characteristics predicting individual late plaque events precipitating acute coronary syndromes (ACS) in a cohort of asymptomatic type 2 diabetic patients. BACKGROUND: In patients with coronary artery disease, CTA plaque characteristics may predict mid-term patient events. METHODS: Asymptomatic patients with diabetes 55 to 74 years of age with no history of coronary artery disease (N = 630) underwent baseline 64-slice CTA and detailed plaque level analysis...
May 11, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29768380/tradeoff-between-noise-reduction-and-inartificial-visualization-in-a-model-based-iterative-reconstruction-algorithm-on-coronary-computed-tomography-angiography
#2
Kenichiro Hirata, Daisuke Utsunomiya, Masafumi Kidoh, Yoshinori Funama, Seitaro Oda, Hideaki Yuki, Yasunori Nagayama, Yuji Iyama, Takeshi Nakaura, Daisuke Sakabe, Kenichi Tsujita, Yasuyuki Yamashita
We aimed to evaluate the image quality performance of coronary CT angiography (CTA) under the different settings of forward-projected model-based iterative reconstruction solutions (FIRST).Thirty patients undergoing coronary CTA were included. Each image was reconstructed using filtered back projection (FBP), adaptive iterative dose reduction 3D (AIDR-3D), and 2 model-based iterative reconstructions including FIRST-body and FIRST-cardiac sharp (CS). CT number and noise were measured in the coronary vessels and plaque...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29758995/diagnostic-accuracy-of-dual-source-and-320-row-computed-tomography-angiography-in-detecting-coronary-in-stent-restenosis-a-systematic-review-and-meta-analysis
#3
Hai Feng Liu, Min Wang, Yong Sheng Xu, Manish Kumar Shrestha, Xing Ru Lu, Jun Qiang Lei
Background Dual-source and 320-row computed tomography angiography (CTA) are increasingly used in diagnosing coronary in-stent restenosis (CISR). Purpose We sought to perform this meta-analysis to evaluate the diagnostic accuracy of dual-source computed tomography angiography (DSCTA) and 320-row CTA in detecting CISR when compared to invasive coronary angiography. Material and Methods Five scientific databases (PubMed, Embase, Scopus, The Cochrane Library, and Web of Science) were searched for research studies in which DSCTA and/or 320-row CTA were used as diagnostic tools for CISR, as recently as October 2017...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29753765/maximization-of-the-usage-of-coronary-cta-derived-plaque-information-using-a-machine-learning-based-algorithm-to-improve-risk-stratification-insights-from-the-confirm-registry
#4
Alexander R van Rosendael, Gabriel Maliakal, Kranthi K Kolli, Ashley Beecy, Subhi J Al'Aref, Aeshita Dwivedi, Gurpreet Singh, Mohit Panday, Amit Kumar, Xiaoyue Ma, Stephan Achenbach, Mouaz H Al-Mallah, Daniele Andreini, Jeroen J Bax, Daniel S Berman, Matthew J Budoff, Filippo Cademartiri, Tracy Q Callister, Hyuk-Jae Chang, Kavitha Chinnaiyan, Benjamin J W Chow, Ricardo C Cury, Augustin DeLago, Gudrun Feuchtner, Martin Hadamitzky, Joerg Hausleiter, Philipp A Kaufmann, Yong-Jin Kim, Jonathon A Leipsic, Erica Maffei, Hugo Marques, Gianluca Pontone, Gilbert L Raff, Ronen Rubinshtein, Leslee J Shaw, Todd C Villines, Heidi Gransar, Yao Lu, Erica C Jones, Jessica M Peña, Fay Y Lin, James K Min
INTRODUCTION: Machine learning (ML) is a field in computer science that demonstrated to effectively integrate clinical and imaging data for the creation of prognostic scores. The current study investigated whether a ML score, incorporating only the 16 segment coronary tree information derived from coronary computed tomography angiography (CCTA), provides enhanced risk stratification compared with current CCTA based risk scores. METHODS: From the multi-center CONFIRM registry, patients were included with complete CCTA risk score information and ≥3 year follow-up for myocardial infarction and death (primary endpoint)...
April 30, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29753733/coronary-computed-tomographic-angiography-findings-and-their-therapeutic-implications-in-asymptomatic-patients-with-familial-hypercholesterolemia-lessons-from-the-safeheart-study
#5
Leopoldo Pérez de Isla, Rodrigo Alonso, Ovidio Muñiz-Grijalvo, José Luis Díaz-Díaz, Daniel Zambón, José Pablo Miramontes, Francisco Fuentes, José Juan Gómez de Diego, Aurora González-Estrada, Nelva Mata, Adriana Saltijeral, Manuel Barreiro, Marta Tomás, Raimundo de Andrés, Rosa Argüeso, Maria Pilar Serrano Gotarredona, Silvia Navarro Herrero, Rosario J Perea Palazón, Teresa M de Caralt, Luisa Arrojo Suárez de Centi, Svetlana Zhilina, Simona Espejo Pérez, Teresa Padró, Pedro Mata
BACKGROUND: Familial hypercholesterolemia (FH) confers an increased risk of premature atherosclerotic disease. Coronary computed tomographic angiography (CTA) can assess preclinical coronary atherosclerosis. OBJECTIVES: To describe coronary CTA findings in asymptomatic molecularly defined FH individuals, to identify those factors related to its presence and extension, and to assess the impact of these results in patients' care and estimated risk. METHODS: Four hundred and forty individuals with FH, without clinical cardiovascular disease, were consecutively enrolled and underwent a coronary CTA that was used to analyze coronary atherosclerosis based on coronary calcium score (CCS), sum of stenosis severity, and plaque composition sum (PCS)...
April 17, 2018: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/29752224/prevalence-and-impact-of-scan-related-anxiety-during-coronary-ct-angiography-a-prospective-cohort-study-of-366-patients
#6
Mickaël Ohana, Stephanie L Sellers, John Mooney, Shaw-Hua Kueh, Rominder Grover, Chesnal D Arepalli, Kapilan Selvakumar, Ung Kim, Philipp Blanke, Jonathon A Leipsic
BACKGROUND: Scanxiety, the anxiety/stress associated with an imaging test, has never been evaluated in relation to coronary CT angiography (Coronary CTA). As it could impact heart rate and thereby affect image quality of Coronary CTA, we aimed to evaluate the prevalence, severity, and impact of scanxiety on quality and interpretability of Coronary CTA. METHODS: 366 consecutive patients were prospectively presented with a clinical questionnaire comprising two tests to evaluate their scan-related anxiety: the Impact of Event IES-6 (6 questions, final score 0-24) and a visual stress-scale (1 question, score 1-10)...
May 4, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29747947/myocardium-in-jeopardy-the-hemodynamic-implications-of-stenosis-proximity-and-severity-on-coronary-cta
#7
EDITORIAL
Todd C Villines
No abstract text is available yet for this article.
May 3, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29743388/ultra-high-resolution-computed-tomography-angiography-for-assessment-of-coronary-artery-stenosis
#8
Sadako Motoyama, Hajime Ito, Masayoshi Sarai, Yasuomi Nagahara, Keiichi Miyajima, Ryota Matsumoto, Yujiro Doi, Yumi Kataoka, Hiroshi Takahashi, Yukio Ozaki, Hiroshi Toyama, Kazuhiro Katada
BACKGROUND: Limitations of coronary computed tomography (CTA) include false-positive stenosis at calcified lesions and assessment of in-stent patency. A prototype of ultra-high resolution computed tomography (U-HRCT: 1,792 channels and 0.25-mm slice thickness×128 rows) with improved spatial resolution was developed. We assessed the diagnostic accuracy of coronary artery stenosis using U-HRCT.Methods and Results:Seventy-nine consecutive patients who underwent CTA using U-HRCT were prospectively included...
May 9, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29736853/is-mri-equivalent-to-ct-in-the-guidance-of-tavr-a-pilot-study
#9
Agnes Mayr, Gert Klug, Sebastian J Reinstadler, Hans-Josef Feistritzer, Martin Reindl, Christian Kremser, Christof Kranewitter, Nikolaos Bonaros, Guy Friedrich, Gudrun Feuchtner, Bernhard Metzler
OBJECTIVES: To compare a comprehensive cardiovascular magnetic resonance imaging (MRI) protocol with contrast-enhanced computed tomography angiography (CTA) for guidance in transcatheter aortic valve replacement (TAVR) evaluation. METHODS AND RESULTS: Non-contrast three-dimensional (3D) 'whole heart' MRI imaging for aortic annulus sizing and measurements of coronary ostia heights, contrast-enhanced MRI angiography (MRA) for evaluation of transfemoral routes as well as aortoiliofemoral-CTA were performed in 16 patients referred for evaluation of TAVR...
May 7, 2018: European Radiology
https://www.readbyqxmd.com/read/29730724/patient-related-factors-influencing-detectability-of-coronary-arteries-in-320-row-ct-angiography-in-infants-with-complex-congenital-heart-disease
#10
Yuzo Yamasaki, Satoshi Kawanami, Takeshi Kamitani, Koji Sagiyama, Seitaro Shin, Takuya Hino, Hazumu Nagata, Hidetake Yabuuchi, Michinobu Nagao, Hiroshi Honda
To investigate the performance of second-generation 320-row computed tomographic (CT) angiography (CTA) in detecting coronary arteries and identify factors influencing visibility of the coronary arteries in infants with complex congenital heart disease (CHD). Data of 60 infants (aged 0-2 years, median 2 months) with complex CHD who underwent examination using 320-row CTA with low-dose prospective electrocardiogram-triggered volume target scanning were reviewed. The coronary arteries of each infant were assessed using a 0-4-point scoring system based on the number of coronary segments with a visible course...
May 5, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29730016/diagnostic-accuracy-of-semi-automatic-quantitative-metrics-as-an-alternative-to-expert-reading-of-ct-myocardial-perfusion-in-the-core320-study
#11
Mohammad R Ostovaneh, Andrea L Vavere, Vishal C Mehra, Klaus F Kofoed, Matthew B Matheson, Armin Arbab-Zadeh, Yasuko Fujisawa, Joanne D Schuijf, Carlos E Rochitte, Arthur J Scholte, Kakuya Kitagawa, Marc Dewey, Christopher Cox, Marcelo F DiCarli, Richard T George, Joao A C Lima
AIMS: To determine the diagnostic accuracy of semi-automatic quantitative metrics compared to expert reading for interpretation of computed tomography perfusion (CTP) imaging. METHODS: The CORE320 multicenter diagnostic accuracy clinical study enrolled patients between 45 and 85 years of age who were clinically referred for invasive coronary angiography (ICA). Computed tomography angiography (CTA), CTP, single photon emission computed tomography (SPECT), and ICA images were interpreted manually in blinded core laboratories by two experienced readers...
April 3, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29688734/assessing-the-relation-of-epicardial-fat-thickness-and-volume-quantified-by-256-slice-computed-tomography-scan-with-coronary-artery-disease-and-cardiovascular-risk-factors
#12
Maryam Mohammadzadeh, Vahid Mohammadzadeh, Madjid Shakiba, Marzieh Motevalli, Azadeh Abedini, Sakineh Kadivar, Pouya Entezari, Ali Mohammadzadeh
BACKGROUND: This study aimed to investigate the association between epicardial adipose tissue (EAT) and coronary artery disease (CAD) as well as cardiovascular risk factors. METHODS: Complete medical records of subjects were reviewed and cardiovascular risk factors were recorded. Epicardial fat volume (EFV) and epicardial fat thickness (EFT) were measured using digital volumetry of acquired images using a 256-slice CT-scanner. Calcium score was measured using Agatston method in non-contrast images...
March 1, 2018: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/29687696/long-term-prognostic-impact-of-non-invasive-follow-up-with-computed-tomography-angiography-in-patients-with-left-main-coronary-artery-stenting
#13
Gerard Roura, Josep Gomez-Lara, Lara Fuentes Castillo, Josè L Ferreiro, Rafael Romaguera, Luis Teruel, Montserrat Gracida Blancas, Elena Carreño, Joan A Gomez-Hospital, Angel Cequier
BACKGROUND: Left main coronary artery (LMCA) stenting is an evolving technique. Whether follow-up computed tomography angiography (CTA) might have clinical impact in these patients is controversial. The aim of present study is to compare clinical outcomes of patients with LMCA stenting followed with CTA versus patients with conventional clinical follow-up. METHODS: From 2003 to 2014 all consecutive patients with unprotected LMCA stenosis treated with single DES implantation were prospectively included...
April 20, 2018: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29685675/predictive-value-of-coronary-computed-tomography-angiography-in-asymptomatic-individuals-with-diabetes-mellitus-systematic-review-and-meta-analysis
#14
Ebba Beller, Felix G Meinel, Franziska Schoeppe, Wolfgang G Kunz, Kolja M Thierfelder, Jörg Hausleiter, Fabian Bamberg, U Joseph Schoepf, Verena S Hoffmann
BACKGROUND: Coronary CT angiography (CTA) is generally not established as a screening tool for asymptomatic individuals. However, it is controversial whether this test may have a role for screening asymptomatic individuals with diabetes mellitus (DM) due to the high prevalence of asymptomatic coronary artery disease (CAD) in this subgroup. METHODS: We searched PubMed and EMBASE through May 2017 for studies that reported on the association between findings at coronary CTA and future cardiac events in asymptomatic individuals with DM...
April 12, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29685360/incidental-lad-stenosis-identified-on-non-gated-chest-cta
#15
Nicholas Chan, Brian M Yuen, Ji Yang, Stuart L Cohen, Loukas Boutis, John N Makaryus
A 57-year-old male former smoker presented to the Emergency Department (ED) with blurry vision, headache, and generalized weakness. He was hypoxic on room air and ECG showed sinus tachycardia. A CT pulmonary angiogram was ordered in the ED and revealed no pulmonary embolism but incidentally noted a likely significant stenosis in the proximal LAD. Subsequent cardiac catheterization revealed a 90% stenotic lesion with percutaneous coronary intervention leading to symptom resolution. Unlike coronary CTA, CTPA is performed with non-ECG gated helical scanning and generates motion artifacts associated with myocardial contraction...
April 14, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29680338/a-comparison-of-the-updated-diamond-forrester-cad-consortium-and-confirm-history-based-risk-scores-for-predicting-obstructive-coronary-artery-disease-in-patients-with-stable-chest-pain-the-scot-heart-coronary-cta-cohort
#16
Lohendran Baskaran, Ibrahim Danad, Heidi Gransar, Bríain Ó Hartaigh, Joshua Schulman-Marcus, Fay Y Lin, Jessica M Peña, Amanda Hunter, David E Newby, Philip D Adamson, James K Min
OBJECTIVES: This study sought to compare the performance of history-based risk scores in predicting obstructive coronary artery disease (CAD) among patients with stable chest pain from the SCOT-HEART study. BACKGROUND: Risk scores for estimating pre-test probability of CAD are derived from referral-based populations with a high prevalence of disease. The generalizability of these scores to lower prevalence populations in the initial patient encounter for chest pain is uncertain...
April 13, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29652747/the-incremental-clinical-value-of-cardiac-hybrid-spect-cta-imaging-in-coronary-artery-disease
#17
Lin Qiu, Hui Tan, Dengfeng Cheng, Hongcheng Shi
Coronary artery disease (CAD) is a major cause of death worldwide. It is significantly important to assess the coronary lesion and its pathophysiological relevance comprehensively. Coronary computed tomography angiography (CTA) or myocardial perfusion imaging alone suffers from some limitations in the evaluation of CAD. Through the integration and spatial colocalization of complementary morphological and functional information, the results of published hybrid single-photon emission computed tomography (SPECT)/CTA studies in patients with CAD are promising for detecting functionally relevant coronary artery lesion and evaluating the relationship between diseased coronary artery, coronary artery anomaly, myocardial bridging, or coronary calcification and myocardial ischemia...
April 12, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29644449/predictive-performance-of-dual-modality-of-computed-tomography-angiography-and-intravascular-ultrasound-for-no-reflow-phenomenon-after-percutaneous-coronary-stenting-in-stable-coronary-artery-disease
#18
Masaaki Okutsu, Takeshi Horio, Hisataka Tanaka, Maki Akiyama, Niro Okimoto, Toshiyuki Tsubouchi, Kenji Kawajiri, Yasuhiro Ohashi, Satoru Sumitsuji, Yuji Ikari
Attenuated plaque on intravascular ultrasound (IVUS) and low attenuation plaque on computed tomography angiography (CTA) are associated with no-reflow phenomenon during percutaneous coronary intervention (PCI). However, evaluation by a single modality has been unable to satisfactorily predict this phenomenon. We investigated whether the combination of IVUS and CTA findings can ameliorate the predictive potential for no-reflow phenomenon after stent implantation during PCI in stable coronary artery disease (CAD)...
April 11, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29622443/pericardial-and-visceral-but-not-total-body-fat-are-related-to-global-coronary-and-extra-coronary-atherosclerotic-plaque-burden
#19
Gaston A Rodriguez-Granillo, Exequiel Reynoso, Carlos Capunay, Jimena Carpio, Patricia Carrascosa
BACKGROUND: To explore the relationship between coronary and extra-coronary atherosclerotic plaque burden with total and regional fat depots among patients undergoing ECG-gated aortic computed tomography angiography (CTA). METHODS: The subjects of this study comprised a cohort of consecutive patients who underwent ECG-gated thoracoabdominal CTA. We assessed the number of coronary segments with plaques (segment-involvement score, SIS); and the extra-coronary atherosclerotic plaque burden, comprising the aorta and supra-aortic trunks, iliofemoral arteries, and visceral arteries (extra-coronary SS)...
June 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29598929/relationship-of-the-duke-jeopardy-score-combined-with-minimal-lumen-diameter-as-assessed-by-computed-tomography-angiography-to-the-hemodynamic-relevance-of-coronary-artery-stenosis
#20
Mengmeng Yu, Yonghong Zhao, Wenbin Li, Zhigang Lu, Meng Wei, Wenxiao Zhou, Jiayin Zhang
OBJECTIVES: To study the diagnostic performance of the ratio between the Duke jeopardy score (DJS) and the minimal lumen diameter (MLD) (DJS/MLDCT ratio) as assessed by coronary computed tomographic angiography (CTA) for differentiating functionally significant from non-significant coronary artery stenoses, with reference to invasive fractional flow reserve (FFR). METHODS: Patients who underwent both coronary CTA and FFR measurement during invasive coronary angiography (ICA) within 2 weeks were retrospectively included in the study...
March 2, 2018: Journal of Cardiovascular Computed Tomography
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