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https://www.readbyqxmd.com/read/29667891/diagnostic-performance-of-a-novel-coronary-ct-angiography-algorithm-prospective-multicenter-validation-of-an-intracycle-ct-motion-correction-algorithm-for-diagnostic-accuracy
#1
Daniele Andreini, Fay Y Lin, Asim Rizvi, Iksung Cho, Ran Heo, Gianluca Pontone, Antonio L Bartorelli, Saima Mushtaq, Todd C Villines, Patricia Carrascosa, Byoung Wook Choi, Stephen Bloom, Han Wei, Yan Xing, Dan Gebow, Heidi Gransar, Hyuk-Jae Chang, Jonathon Leipsic, James K Min
OBJECTIVE: Motion artifact can reduce the diagnostic accuracy of coronary CT angiography (CCTA) for coronary artery disease (CAD). The purpose of this study was to compare the diagnostic performance of an algorithm dedicated to correcting coronary motion artifact with the performance of standard reconstruction methods in a prospective international multicenter study. SUBJECTS AND METHODS: Patients referred for clinically indicated invasive coronary angiography (ICA) for suspected CAD prospectively underwent an investigational CCTA examination free from heart rate-lowering medications before they underwent ICA...
April 18, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29661666/pseudo-wellens-syndrome-and-intermittent-left-bundle-branch-block-in-a-case-of-acute-cholecystitis
#2
Steffen Grautoff, Martin Balog, Guenther Winde
We present a case of a 54-year-old male patient who was admitted to our Emergency Department (ED) with localized epigastric pain. Inflammation markers, ultrasound, and CT scan were inconsistent with an initial diagnosis of cholecystitis. However, there was additional evidence of cholecystolithiasis. The ECG showed new anterior biphasic T waves typical for a Wellens' type A ECG. Additionally, the patient had an intermittent left bundle branch block (LBBB). The diagnostic challenges in differentiating possible diagnoses will be described, to which in this case, were either acute cholecystitis or acute coronary syndrome (ACS)...
April 7, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29655571/a-rapid-access-chest-pain-clinic-racpc-initial-australian-experience
#3
C Yu, M J Sheriff, A C C Ng, S Brazete, J Gullick, D B Brieger, L Kritharides, H C Lowe
Chest pain is the second most common presenting symptom to emergency departments (ED) in Australia, although up to 85% of these patients do not have an acute coronary syndrome (ACS). Cardiologist-led rapid access chest pain clinics (RACPC) have been proposed overseas to assist in the management of such patients, with prompt outpatient assessment if patients are deemed low risk and discharged from the ED. The use of RACPCs in Australia has been only recently proposed; we therefore sought to examine one such RACPC in an Australian context...
December 11, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29652277/factors-associated-with-delayed-cardiac-tamponade-after-cardiac-surgery
#4
Edgar Hernández Leiva, Marisol Carreño, Fernando Rada Bucheli, Alberto Cadena Bonfanti, Juan Pablo Umaña, Rodolfo José Dennis
Context: Cardiac tamponade (CT) following cardiac surgery is a potentially fatal complication and the cause of surgical reintervention in 0.1%-6% of cases. There are two types of CT: acute, occurring within the first 48 h postoperatively, and subacute or delayed, which occurs more than 48 h postoperatively. The latter does not show specific clinical signs, which makes it more difficult to diagnose. The factors associated with acute CT (aCT) are related to coagulopathy or surgical bleeding, while the variables associated with subacute tamponade have not been well defined...
April 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29651533/spatial-orientation-of-coronary-arteries-and-its-implication-for-breast-and-thoracic-radiotherapy-proposing-coronary-strip-as-a-new-organ-at-risk
#5
Anusheel Munshi, Nilaxi Khataniar, Biplab Sarkar, Moti Lal Bera, Bidhu Kalyan Mohanti
OBJECTIVES: Radiotherapy for breast cancer has been associated with various side effects including cardiac sequelae. Our study aimed to define the spatial arc of spread of coronary vessels in a radian angle. MATERIALS AND METHODS: We analysed the records of 51 CT coronary angiographies done in our hospital from January 2016 to July 2016. Left anterior descending (LAD) and right coronary (RC) were contoured for each patient. In each axial section, the radial spread of each artery was noted...
April 12, 2018: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/29650121/prediction-of-abnormal-myocardial-relaxation-from-signal-processed-surface-ecg
#6
Partho P Sengupta, Hemant Kulkarni, Jagat Narula
BACKGROUND: Myocardial relaxation is impaired in almost all cases with left ventricular diastolic dysfunction (LVDD) and is a strong predictor of cardiovascular and all-cause mortality. OBJECTIVES: This study investigated the feasibility of signal-processed surface electrocardiography (spECG) as a diagnostic tool for predicting the presence of abnormal cardiac muscle relaxation. METHODS: A total of 188 outpatients referred for coronary computed tomography (CT) angiography underwent an echocardiogram for assessment of LVDD...
April 17, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29642695/tricuspid-valve-imaging
#7
Francesco Ancona, Stefano Stella, Cristina Capogrosso, Claudia Marini, Andrea Fisicaro, Alberto Margonato, Paolo Denti, Eustachio Agricola
The right ventricle and tricuspid valve (TV) have long been neglected by cardiologists. Functional tricuspid regurgitation (TR) is nowadays the most common cause of severe TR and is emerging as a prognostic factor in many heart diseases. A multimodality imaging approach is fundamental for defining the pathophysiology of TR, using both 2-dimensional and 3-dimensional (3D) echocardiography, as well as CT scan. In particular, 3D echocardiography can characterize TV apparatus and tricuspid annulus; CT offers complementary information about annular structure, and its relationship with the right coronary artery...
April 11, 2018: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29627375/longer-diabetes-duration-reduces-myocardial-blood-flow-in-remote-myocardium-assessed-by-dynamic-myocardial-ct-perfusion
#8
Nobuo Tomizawa, Yusuke Fujino, Masaru Kamitani, Shengpu Chou, Kodai Yamamoto, Shinichi Inoh, Takeshi Nojo, Sunao Nakamura
AIMS: To investigate the relationship of type 2 diabetes duration and myocardial blood flow (MBF) assessed by myocardial CT perfusion. MATERIALS AND METHODS: We prospectively included 140 patients with type 2 diabetes who underwent dynamic myocardial CT perfusion exam. MBF of the remote myocardium was calculated using the deconvolution technique and the Voronoi method. The relationships of MBF and diabetic duration, diabetic complications, conventional risk factors, coronary calcium, and coronary stenosis were assessed by logistic regression analysis...
March 16, 2018: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/29622992/the-degree-of-hair-graying-as-an-independent-risk-marker-for-coronary-artery-disease-a-ct-coronary-angiography-study
#9
Amr Abdel Aziz ElFaramawy, Irini Samuel Hanna, Reham Mohamed Darweesh, Ahmed Shehata Ismail, Hossam Ibrahim Kandil
Background: Cardiovascular disease is a leading cause of death worldwide. Aging is an unavoidable coronary risk factor and is associated with dermatological signs that could be a marker for increased coronary risk. We tested the hypothesis that hair graying as a visible marker of aging is associated with risk of coronary artery disease (CAD) independent of chronological age. Methods: This cross-sectional study included 545 males who underwent a computed tomography coronary angiography (CTCA) for suspicious of CAD, patients were divided into subgroups according to the percentage of gray/white hairs (Hair Whitening Score, HWS: 1-5) and to the absence or presence of CAD...
March 2018: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
https://www.readbyqxmd.com/read/29622979/anomalous-origin-of-left-main-coronary-artery-from-the-right-sinus-of-valsalva-presenting-as-non-st-elevation-acute-coronary-syndrome-a-case-report
#10
Anish Hirachan, Arun Maskey, Gopi Prasad Hirachan, Madhu Roka
Congenital anomalies of the coronary arteries are a cause of sudden cardiac death. Of the known anatomic variants, anomalous origination of a coronary artery from an opposite sinus of Valsalva (ACAOS) remains a major clinical issue and a challenging condition to treat. Congenital coronary anomalies are likely to be under-recognized, as completing an anatomic assessment in a very large portion of the population would seem unfeasible. However, we present a case report with image of a 49 year old male presented with acute non-ST elevation ACS for which he underwent diagnostic angiography of the coronary system which revealed a common origin of both right and left main coronary artery from right sinus of Valsalva with significant obstructive lesion in the mid segment of right coronary artery...
September 2017: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
https://www.readbyqxmd.com/read/29602723/impact-of-a-new-adaptive-statistical-iterative-reconstruction-asir-v-algorithm-on-image-quality-in-coronary-computed-tomography-angiography
#11
Gianluca Pontone, Giuseppe Muscogiuri, Daniele Andreini, Andrea I Guaricci, Marco Guglielmo, Andrea Baggiano, Fabio Fazzari, Saima Mushtaq, Edoardo Conte, Andrea Annoni, Alberto Formenti, Elisabetta Mancini, Massimo Verdecchia, Alessandro Campari, Chiara Martini, Marco Gatti, Laura Fusini, Lorenzo Bonfanti, Elisa Consiglio, Mark G Rabbat, Antonio L Bartorelli, Mauro Pepi
RATIONALE AND OBJECTIVES: A new postprocessing algorithm named adaptive statistical iterative reconstruction (ASIR)-V has been recently introduced. The aim of this article was to analyze the impact of ASIR-V algorithm on signal, noise, and image quality of coronary computed tomography angiography. MATERIALS AND METHODS: Fifty consecutive patients underwent clinically indicated coronary computed tomography angiography (Revolution CT; GE Healthcare, Milwaukee, WI)...
March 27, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29602139/new-methods-to-image-unstable-atherosclerotic-plaques
#12
REVIEW
Jack P M Andrews, Zahi A Fayad, Marc R Dweck
Atherosclerotic plaque rupture is the primary mechanism responsible for myocardial infarction and stroke, the top two killers worldwide. Despite being potentially fatal, the ubiquitous prevalence of atherosclerosis amongst the middle aged and elderly renders individual events relatively rare. This makes the accurate prediction of MI and stroke challenging. Advances in imaging techniques now allow detailed assessments of plaque morphology and disease activity. Both CT and MR can identify certain unstable plaque characteristics thought to be associated with an increased risk of rupture and events...
March 14, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29601265/coronary-artery-fistulas-pathophysiology-imaging-findings-and-management
#13
Gabin Yun, Tae Hyun Nam, Eun Ju Chun
Coronary artery fistulas (CAFs) are abnormal communications of coronary arteries whereby venous circuits bypass the normal capillaries within the myocardium. CAFs are rare, and most affected patients are asymptomatic. However, these fistulas are the most common coronary artery anomalies that can alter coronary hemodynamic parameters. Although most CAFs are asymptomatic in young patients, symptoms and complications become more frequent with increasing age. CAFs are characterized by variable clinical manifestations that are based on the size, origin, and drainage site of the fistula...
March 27, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29600601/pelvic-artery-calcification-score-is-a-marker-of-vascular-calcification-in-male-hemodialysis-patients
#14
Tomohiko Matsuura, Takaya Abe, Mitsutaka Onoda, Daiki Ikarashi, Jun Sugimura, Toshiaki Komaki, Nariyuki Sasaki, Yumiko Takasawa, Tetsuo Kato, Kunihiro Yoshioka, Shigeru Ehara, Wataru Obara
Patients who undergo hemodialysis often suffer from cardiovascular disease (CVD), and evaluation of coronary artery calcification is extremely important. These evaluations are typically conducted using a noninvasive method including electron beam computed tomography (CT) or multi-detector CT, and the Agatston method to calculate the coronary artery calcification score (CACS). However, it is difficult to use for patients undergoing dialysis. Because patients undergoing dialysis is too strong in coronary artery calcification, and results become incorrect...
March 30, 2018: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/29600110/ct-angiography-for-coronary-graft-assessment
#15
COMMENT
Carl Chartrand-Lefebvre, Louis-Mathieu Stevens, Samer Mansour, Nicolas Noiseux
No abstract text is available yet for this article.
January 2018: Journal of Thoracic Disease
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
#16
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
https://www.readbyqxmd.com/read/29590197/correlation-between-coronary-artery-calcification-by-non-cardiac-ct-and-framingham-score-in-young-patients
#17
Gabriel Lichtenstein, Amichai Perlman, Shoshana Shpitzen, Ronen Durst, Dorit Shaham, Eran Leitersdorf, Auryan Szalat
BACKGROUND: Previous studies have established a correlation between coronary artery calcification (CAC) measured by ECG-gated chest computed tomography (CT) and cardiovascular disease. Recent reports which included asymptomatic patients suggest that CAC measured on non-ECG gated CT is similarly associated with cardiovascular risk. This study investigates the correlation between the Framingham Risk Score (FRS) and an incidental finding of CAC on a non-gated chest CT performed for non-cardiac indications in young and seemingly healthy adults...
2018: PloS One
https://www.readbyqxmd.com/read/29589976/the-transluminal-attenuation-gradient-in-coronary-ct-angiography-for-the-detection-of-hemodynamically-significant-disease-can-all-arteries-be-treated-equally
#18
Fujimoto Shinichiro, Andreas A Giannopoulos, Kumamaru K Kanako, Rie Matsumori, Etsuro Kato, Yuko Kawaguchi, Kazuhisa Takamura, Katsumi Miyauchi, Frank J Rybicki, Hiroyuki Daida, Dimitris Mitsouras
OBJECTIVE: Results of the use of the Transluminal Attenuation Gradient(TAG) at coronary CT angiography (CCTA) to predict haemodynamically significant disease vary widely. This study tested whether diagnostic performance of TAG to predict FFR<0.8 is improved when applied separately to subsets of coronary arteries that carry similar physiologic flow. METHODS: Twenty-eight patients with 64×0.5 mm CCTA and invasive FFR in ≥1 major coronary artery were retrospectively evaluated...
March 28, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29588567/dual-energy-single-source-ct-coronary-perfusion-angiography-a-helpful-functional-adjunct-to-anatomical-information
#19
A Canning, S Hughes, J A Purvis
No abstract text is available yet for this article.
January 2018: Ulster Medical Journal
https://www.readbyqxmd.com/read/29582878/value-of-transluminal-attenuation-gradient-of-stress-ccta-for-diagnosis-of-haemodynamically-significant-coronary-artery-stenosis-using-wide-area-detector-ct-in-patients-with-coronary-artery-disease-comparison-with-stress-perfusion-cmr
#20
Hee Yeong Kim, Hwan Seok Yong, Eung Ju Kim, Eun-Young Kang, Bo Kyoung Seo
INTRODUCTION: This study aimed to evaluate the value of transluminal attenuation gradient (TAG) of stress coronary computed tomography angiography (CCTA), using a wide-area detector CT in patients with coronary artery disease, compared to stress perfusion cardiac magnetic resonance (CMR) imaging. METHODS: This prospective study from May 2012 to January 2015 included 21 patients with moderate coronary stenosis on invasive coronary angiography. All patients underwent adenosine stress single-shot CCTA with a rest CCTA scan using a wide-area detector CT...
January 2018: Cardiovascular Journal of Africa
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