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Computed coronary angiography

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https://www.readbyqxmd.com/read/28342678/spontaneous-coronary-artery-intramural-hematoma-in-a-patient-with-vascular-ehlers-danlos-syndrome-serial-findings-in-coronary-computed-tomographic-angiography
#1
Takayoshi Toba, Shumpei Mori, Atsushi Yatani, Yoichiro Sugisaki, Tomomi Akita, Naoto Sasaki, Hiromasa Otake, Toshiro Shinke, Hiroyuki Mori, Tatsuya Nishii, Atsushi K Kono, Ken-Ichi Hirata
No abstract text is available yet for this article.
March 21, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28338554/eligibility-for-minimally-invasive-coronary-artery-bypass-examination-of-epicardial-adipose-tissue-using-computed-tomography
#2
Kate E M Dillon, Marjorie Johnson, Ian L Chan, Bob Kiaii
OBJECTIVE: A variable that necessitates conversion to a conventional full-sternotomy coronary artery bypass procedure from a robotic-assisted endoscopic single-vessel small thoracotomy is the inability to visualize the left anterior descending coronary artery within the surrounding epicardial adipose tissue using the endoscopic camera. The purpose of this study was to determine whether anatomical properties of the epicardial adipose tissue examined using preoperative computed tomography (CT) images are able to predict and thus reduce the need for intraoperative conversion based on effective preoperative exclusion criteria...
March 23, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28338117/endovascular-treatment-for-acute-mesenteric-ischaemia-in-a-young-woman-with-polyarterial-disease
#3
Mihai C Ober, Calin Homorodean, Dan A Tataru, Antonia E Macarie, Camelia D Ober, Dan M Olinic
BACKGROUND: Acute mesenteric ischaemia is a condition with a grim prognosis on conservative treatment. Endovascular revascularisation is a promising approach for some of these patients. CASE REPORT: We present the case of a 44-year-old woman with a history of severe arterial hypertension, left leg claudication, and overlooked symptoms of chronic mesenteric ischaemia for one year, who was admitted for severe abdominal pain for one week. Computed tomographic angiography (CTA) showed acute mesenteric ischaemia by occlusion of the coeliac trunk and the superior mesenteric artery (SMA), without bowel perforation...
March 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/28335983/ideal-guiding-catheter-position-during-bilaterally-engaged-percutaneous-coronary-intervention
#4
Kensuke Yokoi, Masahiko Hara, Yasunori Ueda, Satoru Sumitsuji, Masaki Awata, Youssef K Salah, Daijiro Kabata, Ayumi Shintani, Yasushi Sakata
Using a novel combined angiography computed tomography (CT) system, we evaluated the impact of the intra-aortic root position of a right coronary artery (RCA) catheter on its coaxiality. We retrospectively enrolled 19 patients who underwent CT scans during bilaterally engaged percutaneous coronary intervention. Coaxiality was defined as the angle between the RCA and the RCA catheter. The coaxiality was better when the RCA catheter was placed anterior to the left main coronary artery catheter (median 27.0° vs 53...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28331135/applicability-of-3-dimensional-quantitative-coronary-angiography-derived-computed-fractional-flow-reserve-for-intermediate-coronary-stenosis
#5
Kyoichiro Yazaki, Masato Otsuka, Shohei Kataoka, Mitsuru Kahata, Asako Kumagai, Koji Inoue, Hiroshi Koganei, Kenji Enta, Yasuhiro Ishii
BACKGROUND: Quantitative flow ratio (QFR) is a newly developed image-based index for estimating fractional flow reserve (FFR).Methods and Results:We analyzed 151 coronary arteries with intermediate stenosis in 142 patients undergoing wire-based FFR measurement using dedicated software. Predefined contrast flow QFR, which was derived from 3-dimensional quantitative coronary angiography (3-D QCA) withThrombolysis in Myocardial Infarction (TIMI) frame counts, was compared with FFR as a reference...
March 22, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28330658/nonobstructive-coronary-artery-disease-by-coronary-ct-angiography-improves%C3%A2-risk-stratification-and-allocation%C3%A2-of-statin%C3%A2-therapy
#6
Hamed Emami, Richard A P Takx, Thomas Mayrhofer, Sumbal Janjua, Jakob Park, Amit Pursnani, Ahmed Tawakol, Michael T Lu, Maros Ferencik, Udo Hoffmann
OBJECTIVES: This study sought to determine prognostic value of nonobstructive coronary artery disease (CAD) for atherosclerotic cardiovascular disease (ASCVD) events and to determine whether incorporation of this information into the pooled cohort equation reclassifies recommendations for statin therapy as defined by the 2013 guidelines for cholesterol management of the American College of Cardiology and American Heart Association (ACC/AHA). BACKGROUND: Detection of nonobstructive CAD by coronary computed tomography angiography may improve risk stratification and permit individualized and more appropriate allocation of statin therapy...
March 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329376/comparison-of-the-prognostic-value-of-negative-non-invasive-cardiac-investigations-in-patients-with-suspected-or-known-coronary-artery-disease-a-meta-analysis
#7
Martijn W Smulders, Caroline Jaarsma, Patricia J Nelemans, Sebastiaan C A M Bekkers, Jan Bucerius, Tim Leiner, Harry J G M Crijns, Joachim E Wildberger, Simon Schalla
Aims: To compare the prognostic value of negative non-invasive cardiac investigations (coronary computed tomographic angiography [CCTA], cardiovascular magnetic resonance [CMR], exercise electrocardiographic testing [EET], positron emission tomography [PET], stress-echocardiography [SE], and single-photon emission tomography [SPECT]) in patients with suspected or known coronary artery disease (CAD) and to explore the effect of adjustment for population event risk and presence of CAD. Methods and results: MEDLINE/PubMed database, EMBASE and Cochrane Library were searched from January-1990 to April-2015 for studies reporting annual event rates (AER) of myocardial infarction (MI) and cardiac death...
February 27, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329294/coronary-revascularization-vs-medical-therapy-following-coronary-computed-tomographic-angiography-in-patients-with-low-intermediate-and-high-risk-coronary-artery-disease-results-from-the-confirm-long-term-registry
#8
Joshua Schulman-Marcus, Fay Y Lin, Heidi Gransar, Daniel Berman, Tracy Callister, Augustin DeLago, Martin Hadamitzky, Joerg Hausleiter, Mouaz Al-Mallah, Matthew Budoff, Philipp Kaufmann, Stephan Achenbach, Gilbert Raff, Kavitha Chinnaiyan, Filippo Cademartiri, Erica Maffei, Todd Villines, Yong-Jin Kim, Jonathon Leipsic, Gudrun Feuchtner, Ronen Rubinshtein, Gianluca Pontone, Daniele Andreini, Hugo Marques, Hyuk-Jae Chang, Benjamin J W Chow, Ricardo C Cury, Allison Dunning, Leslee Shaw, James K Min
Aims: To identify the effect of early revascularization on 5-year survival in patients with CAD diagnosed by coronary-computed tomographic angiography (CCTA). Methods and results: We examined 5544 stable patients with suspected CAD undergoing CCTA who were followed a median of 5.5 years in a large international registry. Patients were categorized as having low-, intermediate-, or high-risk CAD based on CCTA findings. Two treatment groups were defined: early revascularization within 90 days of CCTA (n = 1171) and medical therapy (n = 4373)...
March 16, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329219/improved-risk-stratification-with-computed-tomographic-coronary-angiography-in-patients-with-suspected-coronary-artery-disease
#9
Alexander R van Rosendael, Jeroen J Bax
No abstract text is available yet for this article.
March 16, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329198/long-term-serial-non-invasive-multislice-computed-tomography-angiography-with-functional-evaluation-after-coronary-implantation-of-a-bioresorbable-everolimus-eluting-scaffold-the-absorb-cohort-b-msct-substudy
#10
Yoshinobu Onuma, Carlos Collet, Robert-Jan van Geuns, Bernard de Bruyne, Evald Christiansen, Jacques Koolen, Pieter Smits, Bernard Chevalier, Dougal McClean, Dariusz Dudek, Stephan Windecker, Ian Meredith, Koen Nieman, Susan Veldhof, John Ormiston, Patrick W Serruys
Aims: Multimodality invasive imaging of the first-in-man cohort demonstrated at 5 years stable lumen dimensions and a low rate of major adverse cardiac events (MACE). However, the long-term non-invasive assessment of this device remains to be documented. The objective was to describe the 72-month multislice computed tomography (MSCT) angiographic and functional findings after the implantation of the second iteration of the fully resorbable everolimus-eluting polymeric scaffold. Methods and results: In the ABSORB Cohort B trial patients with non-complex de novo lesions were treated with second iteration bioresobable vascular scaffold (BVS)...
March 16, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329166/outcome-in-middle-aged-individuals-with-anomalous-origin-of-the-coronary-artery-from-the-opposite-sinus-a-matched-cohort-study
#11
Christoph Gräni, Dominik C Benz, Dominik A Steffen, Olivier F Clerc, Christian Schmied, Mathias Possner, Jan Vontobel, Fran Mikulicic, Cathérine Gebhard, Aju P Pazhenkottil, Oliver Gaemperli, Shelley Hurwitz, Philipp A Kaufmann, Ronny R Buechel
Aims: Anomalous origin of a coronary artery from the opposite sinus (ACAOS) has been associated with adverse cardiac events in the young. It remains unknown whether this holds true for middle-aged patients with uncorrected ACAOS as well. We assessed the outcome in middle-aged patients with newly diagnosed ACAOS by coronary computed tomography angiography (CCTA) compared with a matched cohort. Methods and results: We retrospectively identified 68 consecutive patients with ACAOS documented by CCTA...
March 16, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28325638/clinically-significant-bleeding-with-low-dose-rivaroxaban-versus-aspirin-in-addition-to-p2y12-inhibition-in-acute-coronary-syndromes-gemini-acs-1-a-double-blind-multicentre-randomised-trial
#12
E Magnus Ohman, Matthew T Roe, P Gabriel Steg, Stefan K James, Thomas J Povsic, Jennifer White, Frank Rockhold, Alexei Plotnikov, Hardi Mundl, John Strony, Xiang Sun, Steen Husted, Michal Tendera, Gilles Montalescot, M Cecilia Bahit, Diego Ardissino, Héctor Bueno, Marc J Claeys, Jose C Nicolau, Jan H Cornel, Shinya Goto, Róbert Gábor Kiss, Ümit Güray, Duk-Woo Park, Christoph Bode, Robert C Welsh, C Michael Gibson
BACKGROUND: Dual antiplatelet therapy (DAPT), aspirin plus a P2Y12 inhibitor, is the standard antithrombotic treatment following acute coronary syndromes. The factor Xa inhibitor rivaroxaban reduced mortality and ischaemic events when added to DAPT, but caused increased bleeding. The safety of a dual pathway antithrombotic therapy approach combining low-dose rivaroxaban (in place of aspirin) with a P2Y12 inhibitor has not been assesssed in acute coronary syndromes. We aimed to assess rivaroxaban 2·5 mg twice daily versus aspirin 100 mg daily, in addition to clopidogrel or ticagrelor (chosen at investigator discretion before randomisation), for patients with acute coronary syndromes started within 10 days after presentation and continued for 6-12 months...
March 17, 2017: Lancet
https://www.readbyqxmd.com/read/28325613/head-to-head-comparison-of-the-diagnostic-performance-of-coronary-computed-tomography-angiography-and-dobutamine-stress-echocardiography-in-the-evaluation-of-acute-chest-pain-with-normal-ecg-findings-and-negative-troponin-tests-a-prospective-multicenter-study
#13
Eric Durand, Fabrice Bauer, Nicolas Mansencal, Arshid Azarine, Benoit Diebold, Albert Hagege, Ludivine Perdrix, Martine Gilard, Yannick Jobic, Hélène Eltchaninoff, Mourad Bensalah, Benjamin Dubourg, Jérôme Caudron, Ralph Niarra, Gilles Chatellier, Jean-Nicolas Dacher, Elie Mousseaux
OBJECTIVE: To perform a head-to-head comparison of coronary CT angiography (CCTA) and dobutamine-stress echocardiography (DSE) in patients presenting recent chest pain when troponin and ECG are negative. METHODS: Two hundred seventeen patients with recent chest pain, normal ECG findings, and negative troponin were prospectively included in this multicenter study and were scheduled for CCTA and DSE. Invasive coronary angiography (ICA), was performed in patients when either DSE or CCTA was considered positive or when both were non-contributive or in case of recurrent chest pain during 6month follow-up...
March 2, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28322097/association-between-ascending-aortic-diameter-and-coronary-artery-dilation-a-demographic-data-analysis
#14
Ali Can Hatemi, Aybala Tongut, Zeki Özyedek, İsmail Çerezci, İlhan Özgöl, Hande Perk Gürün
Objective Coronary artery dilations (CDs), a subgroup of coronary artery anomalies (CAAs), are relatively rare but important cardiac pathologies. They are considered to be linked to coronary atherosclerosis in most cases. Methods The demographic data, multi-slice computed tomographic coronary angiography data, coronary calcium score, and ascending aortic diameter (AAD) of 1538 patients were reviewed. In total, 197 (12.8%) patients (166 men, 31 women; age 15 - 84 years; mean 55.78 ± 12.32 years) with CAAs were identified, and 81 (5...
December 2016: Journal of International Medical Research
https://www.readbyqxmd.com/read/28321775/presence-and-extent-of-cardiac-computed-tomography-angiography-defined-coronary-artery-disease-in-patients-presenting-with-syncope
#15
S Altintas, T Dinh, N G H M Marcks, M Kok, A J J Aerts, B Weijs, Y Blaauw, J E Wildberger, M Das, B L J H Kietselaer, H J G M Crijns
BACKGROUND: In syncope patients, presence of coronary artery disease (CAD) is associated with poor prognosis. However, data concerning CAD prevalence in syncope patients without known cardiovascular disease are lacking. Therefore, the aim of this study was to investigate presence and extent of CAD in syncope patients. METHODS: We included 142 consecutive patients presenting with syncope at the outpatient cardiology clinic who underwent coronary computed tomography (CT) angiography...
March 20, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28320636/the-significance-of-equivocal-exercise-treadmill-ecg-for-intermediate-risk-chest-pain-assessment-insight-from-coronary-ct-angiography-data
#16
Gary T E Lau, Henry Wei, Jo Wickham, Andrew C Y To
BACKGROUND: Exercise treadmill test (ETT) is commonly the first-line investigation in troponin-negative chest pain patients. Inconclusive results are common and often lead to repeated functional testings. Coronary computed tomographic angiography (CCTA) has excellent negative predictive value for coronary artery disease detection and may play an important role in their diagnostic workup. We aim to analyse ETT and CCTA findings to understand their modern roles in intermediate risk chest pain population with inconclusive ETT...
March 1, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28303473/incremental-role-of-resting-myocardial-computed-tomography-perfusion-for-predicting-physiologically-significant-coronary-artery-disease-a-machine-learning-approach
#17
Donghee Han, Ji Hyun Lee, Asim Rizvi, Heidi Gransar, Lohendran Baskaran, Joshua Schulman-Marcus, Bríain Ó Hartaigh, Fay Y Lin, James K Min
BACKGROUND: Evaluation of resting myocardial computed tomography perfusion (CTP) by coronary CT angiography (CCTA) might serve as a useful addition for determining coronary artery disease. We aimed to evaluate the incremental benefit of resting CTP over coronary stenosis for predicting ischemia using a computational algorithm trained by machine learning methods. METHODS: 252 patients underwent CCTA and invasive fractional flow reserve (FFR). CT stenosis was classified as 0%, 1-30%, 31-49%, 50-70%, and >70% maximal stenosis...
March 16, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28296294/electrocardiogram-gated-coronary-ct-angiography-dose-estimates-using-impact
#18
Masanao Kobayashi, Yasuki Asada, Kosuke Matsubara, Shouichi Suzuki, Kichiro Koshida, Yuta Matsunaga, Tomonobu Haba, Ai Kawaguchi, Hiroshi Toyama, Ryoichi Kato
The primary study objective was to assess radiation doses using a modified form of the Imaging Performance Assessment of Computed Tomography (CT) scanner (ImPACT) patient dosimetry for cardiac applications on an Aquilion ONE ViSION Edition scanner, including the Ca score, target computed tomography angiography (CTA), prospective CTA, continuous CTA/cardiac function analysis (CFA), and CTA/CFA modulation. Accordingly, we clarified the CT dose index (CTDI) to determine the relationship between heart rate (HR) and X-ray exposure...
July 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28293007/-dual-left-anterior-descending-coronary-artery-report-of-a-case
#19
Soujiro Amamoto, Masaru Yoshikai, Takahiro Miho, Kiyokazu Koga
A 77-year-old male presented with angina pectoris. On coronary angiography, the left anterior descending artery(LAD) was obstructed after branching the second septal branch. Three-dimensional (3D) images constructed with 64-slice computed tomography (CT) showed type I dual LAD. The short LAD, which had been erroneously recognized as a septal branch on coronary angiography, ran on the anterior interventricular sulcus (AIVS) where it then terminated. The long LAD, which was obstructed at its origin, ran on the left ventricular side of the AIVS, and entered the distal part of the AIVS...
March 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28293003/-surgical-repair-of-coronary-pulmonary-artery-fistulae-with-giant-coronary-aneurysm
#20
Naoki Hashiyama, Yusuke Katayama, Makoto Mo, Munetaka Masuda
A 69-year-old woman was referred to our hospital due to dyspnea on exertion and a heart murmur. A chest X-ray showed a bulge at the left 3rd arch and chest computed tomography( CT) revealed a giant mass adjacent to the right ventricular outflow. Multidetector-row CT and coronary angiography showed a giant coronary aneurysm (55×45 mm) and fistulae arising from the left main coronary trunk and entering into the main pulmonary artery (PA). The pulmonary to systemic flow ratio was 1.84. She was diagnosed with coronary-pulmonary artery fistulae with giant coronary aneurysm...
March 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
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