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Coronary cardiac computed tomography

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https://www.readbyqxmd.com/read/27909513/assessment-of-sinoatrial-node-function-in-patients-with-persistent-and-long-standing-persistent-forms-of-atrial-fibrillation-after-maze-iii-procedure-combined-with-mitral-valve-operation
#1
Kulikov Aleksei A, Bokeria Leo A
RESEARCH OBJECTIVE: Assessment of sinoatrial node function after Maze III procedure combined with a mitral valve operation. METHODS: 100 patients were included in the research with persistent and long-standing persistent forms of atrial fibrillation (AF) and need of operative treatment concerning valve disease. The following preoperative preparation methods were executed to all patients: Electrocardiogram in 12 standard assignments;Two-dimensional echocardiographic with assessment of systolic and diastolic functions of the left ventricle, size of the left atrium and grade of valve disease;Transesophageal echocardiography for exclusion of blood clots in the left atrium and left atrial appendage;Coronary angiography for exclusion of coronary heart disease;Computer tomography for examination of cardiac chambers and anatomic characteristics of pulmonary veins...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909280/-cardiac-failure-developing-eleven-years-after-coronary-artery-bypass-grafting-report-of-a-case
#2
Shingo Taguchi, Takashi Hachiya, Katsuhisa Onoguchi, Makoto Hanai, Makoto Sumi, Masataka Yamazaki, Masahito Yamashiro
We report a rare case of cardiac failure for intrapericardial hematoma 11 years after coronary artery bypass grafting. A 59-year-old man was admitted to our hospital with cardiac tamponade. Echocardiography and computed tomography scan showed severe compression of the left ventricle(LV) by a large mass sized about 5×8 cm. Coronary angiography showed total occlusion at circumflex branch (Cx) #11. The mass was diagnosed with intrapericardial hematoma. We performed removal of hematoma in the pericardial cavity, and removed hematoma had 126 g...
December 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27908971/13n-ammonia-pet-ct-detection-of-myocardial-perfusion-abnormalities-in-beagle-dogs-after-local-heart-irradiation
#3
Jianbo Song, Rui Yan, Zhifang Wu, Jianguo Li, Min Yan, Xinzhong Hao, Jianzhong Liu, Sijin Li
: To determine the potential value of (13)N-ammonia positron emission tomography (PET)/computed tomography (CT) myocardial perfusion imaging (MPI) for detection of myocardial perfusion changes at early stage induced by radiation damage. METHODS: Thirty-six Beagle dogs were randomly divided into the control (n = 18) or the irradiation groups (n = 18). The irradiation group underwent local irradiation to the left ventricular anterior cardiac wall with a single dose of 20 Gy, whereas the control group received sham irradiation...
December 1, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27906089/esophageal-perforation-after-perioperative-transesophageal-echocardiography-a-case-report
#4
Hyun-Chang Kim, Jung-Hyou Oh, Yong-Cheol Lee
BACKGROUND: Transesophageal echocardiography is widely used in cardiac surgery. Transesophageal echocardiography probe insertion and manipulation can injure the esophagus. CASE PRESENTATION: A 76-year-old Asian man was admitted to our hospital for coronary artery bypass graft revascularization surgery. A right carotid endarterectomy was successfully performed 2 days before coronary artery bypass graft revascularization surgery. After the coronary artery bypass graft revascularization surgery was done successfully, postoperative computed tomography and esophagography revealed perforation of the middle esophagus...
December 1, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27903540/greater-volume-but-not-higher-density-of-abdominal-aortic-calcium-is-associated-with-increased-cardiovascular-disease-risk-mesa-multi-ethnic-study-of-atherosclerosis
#5
Nketi I Forbang, Erin D Michos, Robyn L McClelland, Rosemay A Remigio-Baker, Matthew A Allison, Veit Sandfort, Joachim H Ix, Isac Thomas, Dena E Rifkin, Michael H Criqui
BACKGROUND: Abdominal aortic calcium (AAC) and coronary artery calcium (CAC) independently and similarly predict cardiovascular disease (CVD) events. The standard AAC and CAC score, the Agatston method, upweights for greater calcium density, thereby modeling higher calcium density as a CVD hazard. METHODS AND RESULTS: Computed tomography scans were used to measure AAC and CAC volume and density in a multiethnic cohort of community-dwelling individuals, and Cox proportional hazard was used to determine their independent association with incident coronary heart disease (CHD, defined as myocardial infarction, resuscitated cardiac arrest, or CHD death), cardiovascular disease (CVD, defined as CHD plus stroke and stroke death), and all-cause mortality...
November 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27900642/ischemia-burden-on-stress-spect-mpi-predicts-long-term-outcomes-after-revascularization-in-stable-coronary-artery-disease
#6
Hendrik J Boiten, Jan C van den Berge, Roelf Valkema, Ron T van Domburg, Felix Zijlstra, Arend F L Schinkel
BACKGROUND: It is not entirely clear whether ischemia burden on stress single-photon emission computed tomography (SPECT) effectively identifies patients who have a long-term benefit from coronary revascularization. METHODS: The study population consisted of 719 patients with ischemia on stress SPECT. Early coronary revascularization was defined as percutaneous coronary intervention or coronary artery bypass grafting ≤90 days after SPECT. Patients who underwent late revascularization (>90 days after SPECT) were excluded (n = 164)...
November 29, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/27899941/influence-of-increased-epicardial-adipose-tissue-volume-on-1-year-in-stent-restenosis-in-patients-who-received-coronary-stent-implantation
#7
Ying Zhou, Hua-Wei Zhang, Feng Tian, Jin-Song Chen, Tian-Wen Han, Ya-Hang Tan, Jia Zhou, Tao Zhang, Jing Jing, Yun-Dai Chen
BACKGROUND: Epicardial adipose tissue (EAT) is significantly associated with the formation and composition of coronary atherosclerotic plaque, cardiac events and the clinical prognosis of coronary heart disease. But, whether increased EAT deposition may affect the incidence of in-stent restenosis (ISR) is currently unclear. This study used coronary computed tomography angiography (CCTA) as a mean to investigate whether increased EAT volume was associated with ISR. METHODS: A total of 364 patients who underwent 64-slice CCTA examination for the evaluation of suspected coronary artery disease, and subsequently underwent percutaneous coronary intervention (PCI) for the first time, and then accepted coronary angiography (CA) follow-up for ISR examination in one year, were retrospectively included in this study...
September 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/27896904/contrast-induced-encephalopathy-following-cardiac-catheterization
#8
Roberto Spina, Neil Simon, Romesh Markus, David Wm Muller, Krishna Kathir
OBJECTIVES: To describe the epidemiology, pathophysiology, clinical presentation, and management of contrast-induced encephalopathy (CIE) following cardiac catheterization. BACKGROUND: CIE is an acute, reversible neurological disturbance directly attributable to the intra-arterial administration of iodinated contrast medium. METHODS: The PubMed database was searched and all cases in the literature were retrieved and reviewed. RESULTS: 52 reports of CIE following cardiac catheterization were found...
November 29, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27894902/the-feasibility-of-forward-projected-model-based-iterative-reconstruction-solution-first-for-coronary-320-row-computed-tomography-angiography-a-pilot-study
#9
Eriko Maeda, Nobuo Tomizawa, Shigeaki Kanno, Koichiro Yasaka, Takatoshi Kubo, Kenji Ino, Rumiko Torigoe, Kuni Ohtomo
BACKGROUND: We aimed to assess and compare the influence of Forward projected model-based Iterative Reconstruction SoluTion (FIRST), a recently introduced full iterative reconstruction method, on radiation doses and image quality with that of Adaptive Iterative Dose Reduction (AIDR) 3D for 320-row cardiac computed tomography (CT). METHODS: A total of 184 patients subjected to single-beat reconstruction cardiac CT were retrospectively included. The first 89 patients received standard radiation doses; their data were reconstructed using AIDR 3D, whereas the last 95 patients received in average 20% reduction in tube current; their data were reconstructed using FIRST...
November 9, 2016: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/27894070/the-strategy-study-stress-cardiac-magnetic-resonance-versus-computed-tomography-coronary-angiography-for-the-management-of-symptomatic-revascularized-patients-resources-and-outcomes-impact
#10
Gianluca Pontone, Daniele Andreini, Andrea I Guaricci, Cristina Rota, Marco Guglielmo, Saima Mushtaq, Andrea Baggiano, Virginia Beltrama, Laura Fusini, Anna Solbiati, Chiara Segurini, Edoardo Conte, Paola Gripari, Andrea Annoni, Alberto Formenti, Maria Petulla', Federico Lombardi, Giuseppe Muscogiuri, Antonio L Bartorelli, Mauro Pepi
BACKGROUND: Computed tomography coronary angiography (cTCA) and stress cardiac magnetic resonance (stress-CMR) are suitable tools for diagnosing obstructive coronary artery disease in symptomatic patients with previous history of revascularization. However, performance appraisal of noninvasive tests must take in account the consequent diagnostic testing, invasive procedures, clinical outcomes, radiation exposure, and cumulative costs rather than their diagnostic accuracy only. We aimed to compare an anatomic (cTCA) versus a functional (stress-CMR) strategy in symptomatic patients with previous myocardial revascularization procedures...
October 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27890346/the-uk-heartspare-study-stage-ii-multicentre-evaluation-of-a-voluntary-breath-hold-technique-in-patients-receiving-breast-radiotherapy
#11
F R Bartlett, E M Donovan, H A McNair, L A Corsini, R M Colgan, P M Evans, L Maynard, C Griffin, J S Haviland, J R Yarnold, A M Kirby
AIMS: To evaluate the feasibility and heart-sparing ability of the voluntary breath-hold (VBH) technique in a multicentre setting. MATERIALS AND METHODS: Patients were recruited from 10 UK centres. Following surgery for early left breast cancer, patients with any heart inside the 50% isodose from a standard free-breathing tangential field treatment plan underwent a second planning computed tomography (CT) scan using the VBH technique. A separate treatment plan was prepared on the VBH CT scan and used for treatment...
November 24, 2016: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/27890339/spontaneous-coronary-artery-dissection-undissolved-using-cardiac-computed-tomography-response-and-a-question
#12
María Martín, Juan Calvo, José Rozado, Helena Cigarrán, Cecilia Corros, Pablo Flórez, Lucía Junquera, Vicente Barriales, César Morís
No abstract text is available yet for this article.
November 18, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27886613/computed-tomography-is-important-in-appropriately-diagnosing-patients-with-third-degree-atrioventricular-block-and-second-degree-atrioventricular-block-but-not-wenckebach-type
#13
Hiroyuki Takaoka, Nobusada Funabashi, Koya Ozawa, Masae Uehara, Marehiko Ueda, Takuro Horikoshi, Takashi Uno, Yoshio Kobayashi
PURPOSE: To evaluate CT utility for detection of cardiac or lung abnormalities in the diagnosis of organic cardiac disease in subjects with second- or third-degree atrioventricular block (AVB) excepting Wenckebach type. MATERIALS AND METHODS: A total of 50 consecutive patients (25 male; 64±15years) with de novo third- or second-degree AVB underwent both TTE and a combination of cardiac and chest 320 slice CT (Aquilion one, Toshiba Medical) and were retrospectively analyzed...
November 11, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27886161/cardiac-ct-in-the-emergency-department-in-the-era-of-highly-sensitive-troponins-is-there-still-a-role
#14
Admir Dedic, Koen Nieman, Udo Hoffmann, Maros Ferencik
INTRODUCTION: Physicians practicing cardiovascular medicine are every day confronted with patients presenting with symptoms suggestive of an acute coronary syndrome (ACS). Over the years, there have been substantial technical advances, such as the introduction of new non-invasive imaging techniques and the introduction of new highly sensitive cardiac biomarkers. EVIDENCE ACQUISITION AND SYNTHESIS: Physicians have adopted these new assets and have become more experienced with them thus improving medical care...
November 25, 2016: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/27885414/clinical-implementation-of-an-emergency-department-coronary-computed-tomographic-angiography-protocol-for-triage-of-patients-with-suspected-acute-coronary-syndrome
#15
Brian B Ghoshhajra, Richard A P Takx, Pedro V Staziaki, Harshna Vadvala, Phillip Kim, Tomas G Neilan, Nandini M Meyersohn, Daniel Bittner, Sumbal A Janjua, Thomas Mayrhofer, Jeffrey L Greenwald, Quyhn A Truong, Suhny Abbara, David F M Brown, James L Januzzi, Sanjeev Francis, John T Nagurney, Udo Hoffmann
OBJECTIVES: To evaluate the efficiency and safety of emergency department (ED) coronary computed tomography angiography (CTA) during a 3-year clinical experience. METHODS: Single-center registry of coronary CTA in consecutive ED patients with suspicion of acute coronary syndrome (ACS). The primary outcome was efficiency of coronary CTA defined as the length of hospitalization. Secondary endpoints of safety were defined as the rate of downstream testing, normalcy rates of invasive coronary angiography (ICA), absence of missed ACS, and major adverse cardiac events (MACE) during follow-up, and index radiation exposure...
November 24, 2016: European Radiology
https://www.readbyqxmd.com/read/27882733/anomalous-origin-of-the-right-coronary-artery-first-familial-cases-in-asia
#16
Hideki Motomura, Mari Yokokawa, Hirofumi Fukunaga, Mari Nakagaki, Tomoyuki Hasuwa, Hiroyuki Moriuchi
Congenital coronary artery abnormalities may cause sudden death, particularly in athletes. Two siblings, aged 10 and 9 years, respectively, were diagnosed with anomalous origin of the right coronary artery on multi-detector computed tomography (MDCT). The right coronary artery arose from the left coronary cusp, and was wedged between the aorta and pulmonary artery. This was also noted on cardiac ultrasonography (UCG), but in general this might not be seen on electrocardiography at rest. Although the surgical indications are unclear in the case of unproven ischemia, early recognition of the condition may reduce risk of the cardiac events during exercise...
November 2016: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/27872849/automated-segmentation-of-coronary-arteries-based-on-statistical-region-growing-and-heuristic-decision-method
#17
Yun Tian, Yutong Pan, Fuqing Duan, Shifeng Zhao, Qingjun Wang, Wei Wang
The segmentation of coronary arteries is a vital process that helps cardiovascular radiologists detect and quantify stenosis. In this paper, we propose a fully automated coronary artery segmentation from cardiac data volume. The method is built on a statistics region growing together with a heuristic decision. First, the heart region is extracted using a multi-atlas-based approach. Second, the vessel structures are enhanced via a 3D multiscale line filter. Next, seed points are detected automatically through a threshold preprocessing and a subsequent morphological operation...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27872327/relation-between-cardiovascular-disease-risk-factors-and-epicardial-adipose-tissue-density-on-cardiac-computed-tomography-in-patients-at-high-risk-of-cardiovascular-events
#18
Bas T Franssens, Hendrik M Nathoe, Tim Leiner, Yolanda van der Graaf, Frank Lj Visseren
BACKGROUND: The radiodensity of epicardial adipose tissue may provide information on cardiovascular risk in addition to epicardial adipose tissue volume. The aim of this study was to quantify the relation between cardiovascular risk factors and the radiodensity of epicardial adipose tissue in patients at high risk of cardiovascular disease. DESIGN: This was a cross-sectional study in 140 patients at high risk of cardiovascular disease. METHODS: Patients from the Secondary Manifestations of ARTerial disease (SMART) cohort study were invited to undergo cardiac computed tomography angiography...
November 21, 2016: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/27872105/multiethnic-exome-wide-association-study-of-subclinical-atherosclerosis
#19
Pradeep Natarajan, Joshua C Bis, Lawrence F Bielak, Amanda J Cox, Marcus Dörr, Mary F Feitosa, Nora Franceschini, Xiuqing Guo, Shih-Jen Hwang, Aaron Isaacs, Min A Jhun, Maryam Kavousi, Ruifang Li-Gao, Leo-Pekka Lyytikäinen, Riccardo E Marioni, Ulf Schminke, Nathan O Stitziel, Hayato Tada, Jessica van Setten, Albert V Smith, Dina Vojinovic, Lisa R Yanek, Jie Yao, Laura M Yerges-Armstrong, Najaf Amin, Usman Baber, Ingrid B Borecki, J Jeffrey Carr, Yii-Der Ida Chen, L Adrienne Cupples, Pim A de Jong, Harry de Koning, Bob D de Vos, Ayse Demirkan, Valentin Fuster, Oscar H Franco, Mark O Goodarzi, Tamara B Harris, Susan R Heckbert, Gerardo Heiss, Udo Hoffmann, Albert Hofman, Ivana Išgum, J Wouter Jukema, Mika Kähönen, Sharon L R Kardia, Brian G Kral, Lenore J Launer, Joseph Massaro, Roxana Mehran, Braxton D Mitchell, Thomas H Mosley, Renée de Mutsert, Anne B Newman, Khanh-Dung Nguyen, Kari E North, Jeffrey R O'Connell, Matthijs Oudkerk, James S Pankow, Gina M Peloso, Wendy Post, Michael A Province, Laura M Raffield, Olli T Raitakari, Dermot F Reilly, Fernando Rivadeneira, Frits Rosendaal, Samantha Sartori, Kent D Taylor, Alexander Teumer, Stella Trompet, Stephen T Turner, André G Uitterlinden, Dhananjay Vaidya, Aad van der Lugt, Uwe Völker, Joanna M Wardlaw, Christina L Wassel, Stefan Weiss, Mary K Wojczynski, Diane M Becker, Lewis C Becker, Eric Boerwinkle, Donald W Bowden, Ian J Deary, Abbas Dehghan, Stephan B Felix, Vilmundur Gudnason, Terho Lehtimäki, Rasika Mathias, Dennis O Mook-Kanamori, Bruce M Psaty, Daniel J Rader, Jerome I Rotter, James G Wilson, Cornelia M van Duijn, Henry Völzke, Sekar Kathiresan, Patricia A Peyser, Christopher J O'Donnell
BACKGROUND: -The burden of subclinical atherosclerosis in asymptomatic individuals is heritable and associated with elevated risk of developing clinical coronary heart disease (CHD). We sought to identify genetic variants in protein-coding regions associated with subclinical atherosclerosis and the risk of subsequent CHD. METHODS AND RESULTS: -We studied a total of 25,109 European ancestry and African-American participants with coronary artery calcification (CAC) measured by cardiac computed tomography and 52,869 with common carotid intima media thickness (CIMT) measured by ultrasonography within the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) Consortium...
November 21, 2016: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/27871168/long-term-prognosis-of-end-stage-renal-disease-patients-with-normal-myocardial-perfusion-as-determined-by-single-photon-emission-computed-tomography
#20
Gun Ha Park, Jae Won Song, Chang Min Lee, Young Rim Song, Sung Gyun Kim, Hyung Jik Kim, Jwa Kyung Kim
Background/Aims: Normal myocardial perfusion is closely associated with very low rates of cardiac events and better long-term outcomes; however, little is known about its prognostic value in patients with end-stage renal disease (ESRD). Methods: A total of 286 incident patients underwent baseline cardiac evaluations using echocardiography and stress-rest single-photon emission computed tomography. Perfusion scans for 177 patients (61.9%) who had a summed stress score (SSS) < 4 were normal...
November 22, 2016: Korean Journal of Internal Medicine
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