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Coronary computed tomography 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/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
#4
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
#5
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
#6
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
#7
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/29203262/computed-tomography-coronary-angiography-for-evaluation-of-children-with-kawasaki-disease
#8
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
#9
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/29197025/german-cardiac-ct-registry-indications-procedural-data-and-clinical-consequences-in-7061-patients-undergoing-cardiac-computed-tomography
#10
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
#11
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
#12
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
#13
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/29189397/patterns-of-coronary-calcification-and-their-impact-on-the-diagnostic-accuracy-of-computed-tomography-coronary-angiography
#14
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
https://www.readbyqxmd.com/read/29184766/an-investigation-of-correlation-between-left-coronary-bifurcation-angle-and-hemodynamic-changes-in-coronary-stenosis-by-coronary-computed-tomography-angiography-derived-computational-fluid-dynamics
#15
Zhonghua Sun, Thanapong Chaichana
Background: To investigate the correlation between left coronary bifurcation angle and coronary stenosis as assessed by coronary computed tomography angiography (CCTA)-generated computational fluid dynamics (CFD) analysis when compared to the CCTA analysis of coronary lumen stenosis and plaque lesion length with invasive coronary angiography (ICA) as the reference method. Methods: Thirty patients (22 males, mean age: 59±6.9 years) with calcified plaques at the left coronary artery were included in the study with all patients undergoing CCTA and ICA examinations...
October 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29184571/myocardial-bridge-over-the-left-anterior-descending-coronary-artery-a-case-report-and-review-of-the-literature
#16
George Paraskevas, Konstantinos Koutsouflianiotis, Kalliopi Iliou
Myocardial bridging (MB) is considered as a topic of high interest since its occurrence in different studies is statistically significant, and the clinical manifestations of this phenomenon are complicated with cardiovascular diseases. Whether the MB participates in heart diseases and has a decisive effect to life-threatening situations is still under research, and many studies have been conducted to clarify the abovementioned question. A case report with a MB on the left anterior descending coronary artery is presented in the current study, and a review of the literature is provided as well...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29181989/fourth-update-on-ct-angiography-of-coronary-stents-in%C3%A2-vitro-evaluation-of-24-novel-stent-types
#17
Tilman Hickethier, Justus Wenning, Jonas Doerner, David Maintz, Guido Michels, Alexander C Bunck
Background Non-invasive evaluation of coronary stent patency by coronary computed tomography angiography (cCTA) remains challenging. Multiple studies showed that CT technology but also individual stent design strongly influence the assessability of coronary stents by cCTA. Purpose To expand the available data on cCTA characteristics of coronary stents by 24 novel types to help interpreting examinations of patients after stent placement and selecting which stents are suitable for assessment by cCTA. Material and Methods Twenty-four novel coronary stents (17 cobalt-chromium, six stainless-steel, one platinum-chromium) were examined in a coronary phantom...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/29178006/diagnostic-accuracy-of-coronary-opacification-derived-from-coronary-computed-tomography-angiography-to-detect-ischemia-first-validation-versus-single-photon-emission-computed-tomography
#18
Dominik C Benz, Fran Mikulicic, Christoph Gräni, Marvin Grossmann, Andreas A Giannopoulos, Michael Messerli, Catherine Gebhard, Oliver Gaemperli, Ronny R Buechel, Philipp A Kaufmann, Aju P Pazhenkottil
No abstract text is available yet for this article.
November 25, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/29176683/coronary-calcification-in-adults-with-turner-syndrome
#19
Marissa Schoepp, Fady Hannah-Shmouni, Jatin Matta, Ahmed M Ghanem, John A Hanover, Khaled Z Abd-Elmoniem, Ahmed M Gharib
PurposeAdults with Turner syndrome (TS) have an increased predisposition to ischemic heart disease. The quantitative relationship between coronary atherosclerosis and TS has yet to be established.MethodsA total of 128 females (62 with TS) participated in this prospective study. Coronary computed tomography angiography was performed to measure coronary calcified plaque burden, and prevalent noncalcified plaque burden. Regression analysis was used to study the effects of TS and traditional cardiovascular disease risk factors on coronary plaque burden...
October 2, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/29175582/usefulness-of-coronary-postmortem-computed-tomography-angiography-to-detect-lesions-in-the-coronary-artery-and-myocardium-in-cases-of-sudden-death
#20
Hiroyuki Takei, Rie Sano, Yoichiro Takahashi, Keiko Takahashi, Yoshihiko Kominato, Hiroyuki Tokue, Takehiro Shimada, Sachiko Awata, Satoshi Hirasawa, Naoya Ohta
Coronary postmortem computed tomography angiography (coronary PMCTA) has been introduced as a routine examination procedure for autopsy at our department. Here, we reviewed eight autopsy cases in which apparent histopathological changes including acute myocardial infarction (AMI), anomalous aortic origin of a coronary artery (AAOCA), hypertrophic obstructive cardiomyopathy (HOCM) and acute myocarditis were involved in the cause of death. For investigation of the coronary artery and shape of the heart, coronary PMCTA was valuable in detecting narrowing or obstruction of coronary artery in AMI, indicating an anomalous aortic origin of the left coronary artery in AAOCA, and demonstrating septal hypertrophy and intracavitary obstruction in HOCM...
November 16, 2017: Legal Medicine
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