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Cardiac computed tomography angiography

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https://www.readbyqxmd.com/read/29666716/survival-after-cardiac-arrest-secondary-to-massive-pulmonary-embolism
#1
Abdullah E Laher, Muhammed Moolla, Feroza Motara, Fathima Paruk, Guy Richards
Introduction: It is estimated that the diagnosis of pulmonary embolism (PE) is missed in as many as 84% of all cases of PE. Cardiac arrest following PE is generally associated with poor outcomes. Case Report: A 43-year-old man presented to the Emergency Department (ED) in cardiac arrest. Swelling of his right lower limb was noted on arrival. Point of care ultrasound was performed during ongoing cardiopulmonary resuscitation (CPR) and showed a thrombus in the right iliofemoral vein as well as dilatation of the right ventricle...
2018: Case Reports in Emergency Medicine
https://www.readbyqxmd.com/read/29657734/treatment-of-a-patient-with-acute-aortic-dissection-using-extracorporeal-cardiopulmonary-resuscitation-after-an-out-of-hospital-cardiac-arrest-a-case-report
#2
Takahiro Yukawa, Kazuhiro Sugiyama, Kazuki Miyazaki, Takahiro Tanabe, Susumu Ishikawa, Yuichi Hamabe
Case: Circulatory support using veno-arterial extracorporeal membrane oxygenation for aortic disease is conventionally contraindicated. In this case, a 66-year-old man experienced cardiopulmonary arrest caused by acute aortic dissection. When exercising in the gym, he experienced chest discomfort, so the staff immediately called an ambulance. While in the ambulance, he experienced cardiopulmonary arrest. His initial electrocardiogram showed ventricular fibrillation. At the emergency department, we immediately performed extracorporeal cardiopulmonary resuscitation...
April 2018: Acute Medicine & Surgery
https://www.readbyqxmd.com/read/29656824/ductus-arteriosus-aneurysm-case-report-and-review-of-the-literature
#3
E Xu, J-G Delpey, E Finel, A Pennanéach
We report the case of an infant boy born at 39 weeks and 5 days who presented a cleft lip and palate. During the assessment to detect associated malformations, cardiac auscultation revealed a systolic heart murmur. Echocardiography and subsequent thoracic computed tomography angiography identified an aneurysm of the ductus arteriosus. Ductus arteriosus aneurysm, a complicated form of patent ductus arteriosus, may not be as rare as once considered. A clear majority of ductus arteriosus aneurysms are asymptomatic and physiologically resolve after birth...
April 12, 2018: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/29652747/the-incremental-clinical-value-of-cardiac-hybrid-spect-cta-imaging-in-coronary-artery-disease
#4
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/29650121/prediction-of-abnormal-myocardial-relaxation-from-signal-processed-surface-ecg
#5
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/29622180/roles-of-transesophageal-echocardiography-and-cardiac-computed-tomography-for-evaluation-of-left-atrial-thrombus-and-associated-pathology-a-review-and-critical-analysis
#6
REVIEW
Faraz Pathan, Harvey Hecht, Jagat Narula, Thomas H Marwick
Evaluation of the left atrium and left atrial appendage for the presence of thrombus prior to cardioversion and pulmonary vein isolation, and of the entire heart for embolic sources in the setting of cryptogenic stroke, has long been standard medical care. Guidelines have uniformly recommended transesophageal echocardiography (TEE) to accomplish these goals. In recent years, computed tomographic angiography has demonstrated diagnostic accuracy similar to that of TEE for the detection of thrombus. Analysis of the pertinent data and relative merits of the 2 technologies leads to the conclusions that: 1) both modalities have some unique, nonoverlapping capabilities that may dictate their use in specific situations; 2) computed tomographic angiography is a reasonable alternative to TEE when the primary aim is to exclude left atrial and left atrial appendage thrombus and in patients in whom the risks associated with TEE outweigh the benefits; and 3) both options should be discussed with the patient in the setting of shared decision making...
April 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29613990/motion-artifact-reduction-from-high-pitch-dual-source-computed-tomography-pulmonary-angiography
#7
Paul M Bunch, Urvi P Fulwadhva, Jeremy R Wortman, Andrew N Primak, Rachna Madan, Michael L Steigner, Aaron D Sodickson
PURPOSE: The purpose of this study was to compare quantitative and qualitative measures of aortic, cardiac, and respiratory motion artifact between high-pitch dual-source (DS) and single-source (SS) computed tomography pulmonary angiography (CTPA) protocols. METHODS: This institutional review board-approved, Health Insurance Portability and Accountability Act-compliant study retrospectively reviewed 80 non-electrocardiogram-gated CTPA examinations acquired with a second-generation DS system at 100 kVp following 50 mL iodinated contrast injection - 40 consecutive SS and 40 consecutive DS studies...
April 2, 2018: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/29604092/prognostic-relevance-of-subclinical-coronary-and-carotid-atherosclerosis-in-a-diabetic-and-non-diabetic-asymptomatic-population
#8
Andrea Igoren Guaricci, Valentina Lorenzoni, Marco Guglielmo, Saima Mushtaq, Giuseppe Muscogiuri, Filippo Cademartiri, Mark Rabbat, Daniele Andreini, Gaetano Serviddio, Nicola Gaibazzi, Mauro Pepi, Gianluca Pontone
BACKGROUD: The aim of the study was to evaluate the incremental prognostic benefit of carotid artery disease and subclinical coronary artery disease (CAD) features in addition to clinical evaluation in a asymptomatic population. METHODS: Over a six-year period, 10-year-FRS together with carotid ultrasound (CUS) and coronary computed tomography angiography (CCTA) were evaluated for the prediction of major adverse cardiac events (MACE). RESULTS: We enrolled 517 consecutive asymptomatic patients (63% male, 64±10 years of age, 17...
March 31, 2018: Clinical Cardiology
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
#9
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
https://www.readbyqxmd.com/read/29576785/incidental-finding-of-a-large-mobile-aortic-arch-mass-during-conventional-angiography
#10
Hassan Aghajani, Shahrooz Yazdani, Mohammad Ghafaripoor, Zahra Shajari
Thromboembolism occurs commonly in general practice and leads to significant health burden. Apart from cardiac sources, aortic atherosclerotic plaques contribute considerably to thromboembolism. A 63-year-old diabetic hypertensive woman referred to our center due to exertional chest pain unresponsive to optimal medical therapy and underwent coronary angiography. Owing to resistance during guide-wire advancement, an aortography was performed. Aortic arch injection demonstrated a large suspended mass distal to the left subclavian artery with free movement in the descending thoracic aorta...
October 2017: Journal of Tehran Heart Center
https://www.readbyqxmd.com/read/29576784/congenital-aortico-left-ventricular-tunnel-a-case-report-of-a-rare-cause-of-aortic-regurgitation-in-adults
#11
Zahra Khajali, Sedigheh Saedi, Alireza Alizadeh Ghavidel, Hamid Reza Pouraliakbar
The aortico-left ventricular tunnel is a rare congenital abnormality resulting in a pathologic connection between the aorta and the left ventricle. It often presents during infancy or early childhood as a cardiac failure symptom or an incidental finding of a cardiac murmur due to severe aortic regurgitation. It is, however, also occasionally found in asymptomatic adults. We describe a 20-year-old female presenting with palpitations in whom clinical evaluations with echocardiography and computed tomography angiography led to the diagnosis of severe aortic regurgitation caused by a tunnel connecting the right sinus of the aorta to the left ventricle...
October 2017: Journal of Tehran Heart Center
https://www.readbyqxmd.com/read/29576220/fusion-of-three-dimensional-echocardiographic-regional-myocardial-strain-with-cardiac-computed-tomography-for-noninvasive-evaluation-of-the-hemodynamic-impact-of-coronary-stenosis-in-patients-with-chest-pain
#12
Victor Mor-Avi, Mita B Patel, Francesco Maffessanti, Amita Singh, Diego Medvedofsky, S Javed Zaidi, Anuj Mediratta, Akhil Narang, Noreen Nazir, Nadjia Kachenoura, Roberto M Lang, Amit R Patel
BACKGROUND: Combined evaluation of coronary stenosis and the extent of ischemia is essential in patients with chest pain. Intermediate-grade stenosis on computed tomographic coronary angiography (CTCA) frequently triggers downstream nuclear stress testing. Alternative approaches without stress and/or radiation may have important implications. Myocardial strain measured from echocardiographic images can be used to detect subclinical dysfunction. The authors recently tested the feasibility of fusion of three-dimensional (3D) echocardiography-derived regional resting longitudinal strain with coronary arteries from CTCA to determine the hemodynamic significance of stenosis...
March 22, 2018: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29570428/intravascular-cooling-catheter-related-venous-thromboembolism-after-hypothermia-a-case-report-and-review-of-the-literature
#13
Xuan Wang, Brian T Moy, Brett J Hiendlmayr, Felix Krainski, W Lane Duvall, Antonio B Fernandez
Fifty-four year-old man with recent history of myocardial infarction and a percutaneous coronary intervention who suffered a ventricular fibrillation arrest at home. He was resuscitated in the field. His heart rhythm was in atrial fibrillation. The cardiac catheterization showed a patent stent from his previous myocardial infarction and no new occlusions. He subsequently underwent hypothermia protocol using the Alsius CoolGard 3000 Temperature Control System and Icy Catheter. Heparin drip was started for atrial fibrillation 36 hours after catheter insertion and became therapeutic 2 hours before the end of cooling maintenance phase...
March 23, 2018: Therapeutic Hypothermia and Temperature Management
https://www.readbyqxmd.com/read/29567628/coronary-computed-tomography-angiography-and-endocardial-leads-image-quality-in-320-row-ct-using-iterative-reconstruction
#14
Marietta Garmer, Marc Bonsels, Frauke Metz, Oliver Klein-Wiele, Bodo Brandts, Dietrich Grönemeyer
PURPOSE: To investigate whether the presence of endocardial leads has an impact on image quality in coronary computed tomography angiography (CCTA), when current technique is employed using a 320-row computed tomography and iterative reconstruction. MATERIALS AND METHODS: CCTA was performed in 1641 patients, from these we identified 51 patients (study group) with endocardial leads and 51 matched partners (control group) without endocardial leads. Noise was determined in the ascending aorta and the left ventricle; signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were determined in the left and right coronary artery...
March 2, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29564584/implication-of-coronary-ct-angiography-combined-with-four-dimensional-speckle-tracking-echocardiography-for-predicting-major-adverse-cardiac-events
#15
Xiaohua Yin, Rong Xu, Yingchun Wang, Tao Cheng, Hui Zhou
Coronary computed tomography angiography (CCTA) can provide abundant information about the anatomy of the coronary artery. However, this modality is limited in evaluation of myocardial function. Four-dimensional speckle tracking echocardiography (4DSTE) is a novel and sensitive technique for quantitative evaluation of myocardial deformation. We estimated the value of these imaging modalities to predict the risk of MACE in 209 patients with suspected coronary artery disease(CAD) after a median follow-up of 727 days...
March 21, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29563352/local-thickness-of-epicardial-adipose-tissue-surrounding-the-left-anterior-descending-artery-is-a-simple-predictor-of-coronary-artery-disease-new-prediction-model-in-combination-with-framingham-risk-score
#16
Gulinu Maimaituxun, Michio Shimabukuro, Daiju Fukuda, Shusuke Yagi, Yukina Hirata, Takashi Iwase, Shoichiro Takao, Tomomi Matsuura, Takayuki Ise, Kenya Kusunose, Takeshi Tobiume, Koji Yamaguchi, Hirotsugu Yamada, Takeshi Soeki, Tetsuzo Wakatsuki, Masafumi Harada, Masataka Sata
BACKGROUND: Compared with global cardiac adiposity, the local accumulation of fat surrounding coronary arteries might have a more direct impact on coronary artery disease (CAD). Here, we compared the local epicardial adipose tissue (EAT) thickness and global cardiac adiposity volumes for predicting CAD.Methods and Results:A total of 197 consecutive subjects underwent 320-slice multi-detector computed tomography coronary angiography and were segregated into CAD (≥1 coronary artery branch stenosis ≥50%) and non-CAD groups...
March 21, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29561912/clinical-value-of-patient-specific-three-dimensional-printing-of-congenital-heart-disease-quantitative-and-qualitative-assessments
#17
Ivan Wen Wen Lau, Dongting Liu, Lei Xu, Zhanming Fan, Zhonghua Sun
OBJECTIVE: Current diagnostic assessment tools remain suboptimal in demonstrating complex morphology of congenital heart disease (CHD). This limitation has posed several challenges in preoperative planning, communication in medical practice, and medical education. This study aims to investigate the dimensional accuracy and the clinical value of 3D printed model of CHD in the above three areas. METHODS: Using cardiac computed tomography angiography (CCTA) data, a patient-specific 3D model of a 20-month-old boy with double outlet right ventricle was printed in Tango Plus material...
2018: PloS One
https://www.readbyqxmd.com/read/29560046/implementation-of-a-rapid-protocol-based-tia-management-pathway
#18
Susann J Jarhult, Melissa L Howell, Isabelle Barnaure-Nachbar, Yuchiao Chang, Benjamin A White, Mary Amatangelo, David F Brown, Aneesh B Singhal, Lee H Schwamm, Scott B Silverman, Joshua N Goldstein
Introduction: Our goal was to assess whether use of a standardized clinical protocol improves efficiency for patients who present to the emergency department (ED) with symptoms of transient ischemic attack (TIA). Methods: We performed a structured, retrospective, cohort study at a large, urban, tertiary care academic center. In July 2012 this hospital implemented a standardized protocol for patients with suspected TIA. The protocol selected high-risk patients for admission and low/intermediate-risk patients to an ED observation unit for workup...
March 2018: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29552242/congestive-cirrhosis-in-osler-weber-rendu-syndrome-a-rare-case-report
#19
Patrícia Leitão, André Carvalho, Conceição Guerra, José Gonçalves, Isabel Ramos
Hereditary hemorrhagic telangiectasia or Osler-Weber-Rendu syndrome is a rare autosomal dominant vascular disorder characterized by epistaxis, mucocutaneous telangiectasias, and arteriovenous malformations affecting various organs and systems. The liver is a commonly involved organ (74% of patients with hereditary hemorrhagic telangiectasia), although symptomatic liver disease is quite infrequent. In symptomatic cases, clinical manifestations relate most commonly to the predominant type of vascular shunting present (arteriovenous, arterioportal, or portovenous)...
February 2018: Radiology Case Reports
https://www.readbyqxmd.com/read/29552241/interrupted-aortic-arch-diagnosis-by-computed-tomography-angiography-and-3-d-reconstruction-a-case-report
#20
Tatiana Marcela Pérez, Sandra Milena García, Martha Lucía Velasco, Angela Paola Sánchez
Interrupted aortic arch is an extremely rare congenital malformation representing about 1% of congenital heart disease. Early symptoms usually occur early in the neonatal period and clinical deterioration is often rapid and long-term prognosis is limited. Nonetheless, this condition has been identified later in adult life in rare cases. We report a case in an adult male with absence of hypertension history and no further cardiac compromise, with a severe posterior chest pain alongside dyspnea and sweating. Computed tomography angiography revealed interrupted aortic arch type A, bivalve aorta, hemopericardium, aortic dissection Stanford A, and important collateral circulation...
February 2018: Radiology Case Reports
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