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https://www.readbyqxmd.com/read/29149718/coronary-risk-assessment-at-x-ray-dose-equivalent-ungated-chest-ct-results-of-a-multi-reader-study
#1
Michael Messerli, Lukas Hechelhammer, Sebastian Leschka, René Warschkow, Simon Wildermuth, Ralf W Bauer
OBJECTIVES: To determine the value of ultra-low dose chest CT with tin filtration for ordinal coronary artery calcium (CAC) risk scoring. METHODS: 50 patients were prospectively included and underwent clinical standard dose chest CT (1.8±0.7mSv) and ultra-low dose CT (0.13±0.01mSv). Four radiologists estimated presence and extent of CAC. RESULTS: Weighted kappa values for CAC were 0.76-0.97 in standard dose and 0.75-0.95 in ultra-low dose CT (p<0...
October 25, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29148628/clinical-significance-of-st-depression-at-exercise-stress-testing-in-competitive-athletes-usefulness-of-coronary-ct-during-screening
#2
Fabio Sperandii, Emanuele Guerra, Eliana Tranchita, Carlo Minganti, Chiara Lanzillo, Antonia Nigro, Federico Quaranta, Attilio Parisi, Mauro DI Roma, Luciano Maresca, Federica Fagnani, Leonardo Calò
BACKGROUND: Congenital coronary anomalies (CCAs) and coronary artery disease (CAD) arouse intense scientific and clinical interest in sports medicine and sports cardiology medical communities because of their potential to trigger sudden cardiac death (SCD) in athletes. Exercise stress testing represent the first instrumental assessment to evaluate electrocardiographic changes during effort. Coronary computed tomography angiography (CCTA) is an advanced accurate noninvasive imaging modality for excluding CAD and abnormalities of origin and course of coronary vessels...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29146023/longitudinal-associations-of-pericardial-and-intrathoracic-fat-with-progression-of-coronary-artery-calcium-from-the-framingham-heart-study
#3
Jane J Lee, Alison Pedley, Udo Hoffmann, Joseph M Massaro, Christopher J O'Donnell, Emelia J Benjamin, Michelle T Long
Cross-sectional studies have shown that pericardial fat is associated with atherosclerotic burden above and beyond generalized and central adiposity. Whether pericardial fat is longitudinally associated with coronary artery calcium (CAC) has not been firmly established. We examined the associations between cardiac ectopic fat including pericardial and intrathoracic fat with CAC progression and incidence in a community-based study setting. Study participants were from the Framingham Heart Study Offspring and Third Generation Cohorts who underwent multidetector computed tomography at 2 consecutive examinations (2002 to 2005 and 2008 to 2011) for the assessment of CAC...
October 19, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29145895/comparative-analysis-of-high-sensitivity-cardiac-troponin-i-and-t-for-their-association-with-coronary-computed-tomography-assessed-calcium-scoring-represented-by-the-agatston-score
#4
Jonas Rusnak, Michael Behnes, Thomas Henzler, Nadine Reckord, Nils Vogler, Mathias Meyer, Ursula Hoffmann, Michele Natale, Julia Hoffmann, Sonja Hamed, Kathrin Weidner, Siegfried Lang, Agnibh Mukherji, Holger Haubenreisser, Stefan O Schoenberg, Martin Borggrefe, Thomas Bertsch, Ibrahim Akin
BACKGROUND: This study evaluates the association between high-sensitivity cardiac troponin I (hs-cTnI) and T (hs-cTnT) and coronary calcium concentration (CAC) detected by coronary computed tomography (CCT) and evaluated with the Agatston score in patients with suspected coronary artery disease (CAD). METHODS: Patients undergoing CCT during routine clinical care were enrolled prospectively. CCT was indicated for patients with a low to intermediate pretest probability for CAD...
November 16, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/29145264/influences-of-cardiac-motion-on-computed-tomography-guided-biopsy-of-lung-nodules-located-near-the-heart
#5
Li-Sheng Hsu, Chien-Wei Chen, Chia-Hao Chang, Chien-Han Liao, Sheng-Lung Hsu, Wei-Ming Lin
Computed tomography (CT)-guided lung biopsy of nodules located near the heart may be associated with potential complications. To understand the influences of cardiac motion on lung parenchyma during biopsy, we processed the cardiac phase images of coronary CT angiography (CCTA) and noticed shifts in mediastinum lung margin (MLM) at different zones.Thirty eight CCTA (27 men and 11 women) were retrospectively evaluated. Image processing was done with Fiji (an open source Java image processing program by Fiji contributors) using 10% to 90% phase images of CCTA; and tissue displacement (MLM shift) was shown on the resulting images...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29142815/multifactorial-genesis-of-a-seeming-case-of-pulmonary-hypertension
#6
Rita Leonarda Musci, Lucrezia De Michele, Carlo D'Agostino, Paolo Colonna
Herein, we report the case of a 44-year-old female with end-stage renal disease on hemodialysis. She was admitted to our hospital to evaluate if she was eligible for a kidney transplant. Transthoracic echocardiography showed a markedly dilated coronary sinus and an unexpected finding of increased right ventriculoatrial gradient. A saline contrast echocardiography to confirm the presence of persistent left superior vena cava (PLSVC) was not performed because of arteriovenous fistula (FAV) for hemodialysis on the left forearm...
October 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/29142489/correlation-between-osteoprotegerin-serum-level-and-coronary-calcification-using-coronary-artery-calcium-score-in-patient-with-moderate-severe-cardiovascular-risk-factor
#7
J Nugroho, Widorini Widorini
Coronary artery calcification is a part of atherosclerosis process associated with coronary heart disease. Recently, coronary artery calcification assessment using computed tomography (CT) is still the best noninvasive imaging with high sensitivity and specificity. Osteoprotegerin (OPG) is one of vascular calcification marker that through its role to bind receptor activator of nuclear factor-κβ ligand and inhibit osteoclastogenesis is suspected of playing a role for coronary calcification in atherosclerosis process...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29142357/single-coronary-artery-demonstrating-slightly-decreased-13-nh3-stress-flows-in-its-distal-flow-territories
#8
Sabrine Q Kol, Jouke J Boer, Friso M van der Zant, Remco J J Knol
A 54-year-old male patient was referred for computed tomography angiography to rule out cardiovascular disease. The examination revealed a single coronary artery originating from the right sinus of Valsalva, extending to the normal left circumflex artery and left anterior descending artery domains. The computed tomography showed only mild coronary sclerosis. The myocardial stress flow on the subsequently performed (13)NH3 myocardial perfusion positron emission tomography demonstrated a relative stress flow reduction in the distal segments along the monocoronary...
October 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/29142010/value-of-progression-of-coronary-artery-calcification-for-risk-prediction-of-coronary-and-cardiovascular-events-result-of-the-heinz-nixdorf-recall-hnr-study
#9
Nils Lehmann, Raimund A Erbel, Amir A Mahabadi, Michael Rauwolf, Stefan Möhlenkamp, Susanne Moebus, Hagen Kälsch, Thomas Budde, Axel Schmermund, Andreas Stang, Dagmar Führer-Sakel, Christian Weimar, Ulla Roggenbuck, Nico Dragano, Karl-Heinz Jöckel
Background -Computed tomography (CT) allows estimation of coronary artery calcium (CAC) progression. We evaluated several progression algorithms in our unselected, population-based cohort for risk prediction of coronary and cardiovascular (CV) events. Methods -In 3281 participants (45-74 years), free from CV disease until the 2(nd) visit, risk factors and CTs at baseline (b) and after a mean of 5.1 years (5y) were measured. Hard coronary and cardiovascular events as well as total CV events including revascularization were recorded during a follow-up time of 7...
November 15, 2017: Circulation
https://www.readbyqxmd.com/read/29139033/relationship-between-airflow-obstruction-and-coronary-atherosclerosis-in-asymptomatic-individuals-evaluation-by-coronary-ct-angiography
#10
Jin-Jin Kim, Dong-Bin Kim, Sung-Won Jang, Eun Joo Cho, Kiyuk Chang, Sang Hong Baek, Ho-Joong Youn, Wook Sung Chung, Ki-Bae Seung, Tai-Ho Rho, Jung Im Jung, Byung-Hee Hwang
Airflow obstruction is associated with increased cardiovascular morbidity and mortality. However, the causal mechanisms linking airflow obstruction with higher incidence of cardiovascular events remain elusive. We evaluated the relationship between airflow obstruction, a key feature of chronic obstructive pulmonary disease (COPD), and prevalence, extent, and severity of coronary atherosclerosis in a large cohort of asymptomatic subjects. Participants were recruited from those undergoing spirometry and coronary computed tomography angiography (CCTA) as part of a general health evaluation from March 2009 to February 2011...
November 14, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29138942/calculation-of-left-ventricular-volumes-and-ejection-fraction-from-dynamic-cardiac-gated-15-o-water-pet-ct-5d-pet
#11
Jonny Nordström, Tanja Kero, Hendrik Johannes Harms, Charles Widström, Frank A Flachskampf, Jens Sörensen, Mark Lubberink
BACKGROUND: Quantitative measurement of myocardial blood flow (MBF) is of increasing interest in the clinical assessment of patients with suspected coronary artery disease (CAD). (15)O-water positron emission tomography (PET) is considered the gold standard for non-invasive MBF measurements. However, calculation of left ventricular (LV) volumes and ejection fraction (EF) is not possible from standard (15)O-water uptake images. The purpose of the present work was to investigate the possibility of calculating LV volumes and LVEF from cardiac-gated parametric blood volume (V B) (15)O-water images and from first pass (FP) images...
November 14, 2017: EJNMMI Physics
https://www.readbyqxmd.com/read/29138258/challenges-in-delivering-computed-tomography-coronary-angiography-as-the-first-line-test-for-stable-chest-pain
#12
John G Dreisbach, Edward D Nicol, Carl A Roobottom, Simon Padley, Giles Roditi
OBJECTIVE: The National Institute for Health and Care Excellence (NICE) clinical guidelines 'chest pain of recent onset: assessment and diagnosis' (update 2016) state CT coronary angiography (CTCA) should be offered as the first-line investigation for patients with stable chest pain. However, the current provision in the UK is unknown. We aimed to evaluate this and estimate the requirements for full implementation of the guidelines including geographical variation. Ancillary aims included surveying the number of CTCA-capable scanners and accredited practitioners in the UK...
November 14, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29137093/an-incidental-encounter-of-a-rare-high-take-off-right-coronary-artery-a-case-report
#13
Xicheng Deng, Peng Huang, Wenjuan Chen, Xiaohui Yang, Qianjun Liu, Yunbin Xiao, Cheng He
RATIONALE: High take-off of the coronary arteries is a rare cardiac anatomic anomaly, which may occur independently or with other congenital heart defects. In the clinical setting, it is noteworthy as a cause of sudden cardiac death. Further, it is vital to identify such anomalies to avoid intraoperative catastrophes in surgeries for congenital heart defects. PATIENT CONCERNS: A II/6 systolic heart murmur on physical examination was incidentally found in a 9-year-old boy; he was confirmed to have a secundum-type atrial septal defect on echocardiography...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29137066/a-coronary-artery-fistula-having-connection-between-2-coronary-arteries-and-the-left-ventricle-a-case-report
#14
Chang-Yeon Kim, Ji Yong Choi, Kee Sik Kim
RATIONALE: Cases of coronary artery fistula having a connection with the cardiac cavity are rare. Here, we report a case in which 2 coronary arteries empty into the left ventricular cavity together. PATIENT CONCERNS: A 63-year-old woman who was diagnosed as having hypertension 20 years prior presented with dyspnea. DIAGNOSES: The coronary angiography revealed coronary artery fistula. INTERVENTIONS: Chest X-ray showed pulmonary edema...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29136730/-application-of-the-descending-branch-of-the-lateral-circumflex-femoral-artery-in-the-coronary-artery-bypass-grafting-operation
#15
X J Luo, W Wang, Y T Wang, Y Yang, H Li, X Wang, S S Hu
Objective: To investigate the technical method for harvesting and application of the descending branch of the lateral circumflex femoral artery (DBLCFA) in the coronary artery bypass grafting (CABG) operation. Methods: Between December 2016 and April 2017, 19 patients were arranged to use DBLCFA and got CT angiography (CTA) of pelvic and femoral arteries pre-operative at Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College. Finally, DBLCFA was harvested in 16 patients (including 2 female patients, with a mean age of (47...
November 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29134367/imaging-of-cardiovascular-disease-in-pregnancy-and-the-peripartum-period
#16
REVIEW
Theodore Pierce, Meline Hovnanian, Sandeep Hedgire, Brian Ghoshhajra
Cardiovascular disease is an important cause of morbidity and mortality during pregnancy and the postpartum period. During pregnancy, the cardiovascular system undergoes extensive hemodynamic, hormonal, and microstructural changes which may exacerbate a preexisting underlying cardiovascular condition or predispose to cardiovascular complications not typically seen in young healthy women. Such conditions include spontaneous coronary artery dissection, atherosclerotic coronary artery disease, and peripartum cardiomyopathy...
November 14, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29134268/clinical-significance-of-transluminal-attenuation-gradient-in-320-row-area-detector-coronary-ct-angiography
#17
Etsuro Kato, Shinichiro Fujimoto, Kazuhisa Takamura, Yuko Kawaguchi, Chihiro Aoshima, Makoto Hiki, Kanako K Kumamaru, Hiroyuki Daida
The clinical significance of the transluminal attenuation gradient (TAG) has not been established. We evaluated the incremental diagnostic value of TAG by 320-row area detector computed tomography (320-ADCT). Subjects were 65 patients who underwent one-rotation scanning by 320-ADCT and invasive coronary angiography (ICA) within 3 months. TAG values were obtained for the major epicardial vessels 2 mm or more each in RCA, LAD and LCX using automatic analysis software. Moreover, TAG values that excluded calcified lesions in calculation of the regression line were also evaluated (excluded-TAG)...
November 13, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29133478/clinical-relevance-of-18-f-sodium-fluoride-positron-emission-tomography-in-noninvasive-identification-of-high-risk-plaque-in-patients-with-coronary-artery-disease
#18
Joo Myung Lee, Ji-In Bang, Bon-Kwon Koo, Doyeon Hwang, Jonghanne Park, Jinlong Zhang, Tong Yaliang, Minseok Suh, Jin Chul Paeng, Yasutsugu Shiono, Takashi Kubo, Takashi Akasaka
BACKGROUND: (18)F-sodium fluoride ((18)F-NaF) positron-emission tomography has been introduced as a potential noninvasive imaging tool to identify plaques with high-risk characteristics in patients with coronary artery disease. We sought to evaluate the clinical relevance of (18)F-NaF uptake using optical coherence tomography (OCT), intravascular ultrasound (IVUS), and coronary computed tomography angiography in patients with coronary artery disease. METHODS AND RESULTS: The target population consisted of 51 prospectively enrolled patients (93 stenoses) who underwent (18)F-NaF positron-emission tomography before invasive coronary angiography...
November 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29132034/impact-of-flow-mediated-dilatation-and-coronary-calcification-in-providing-complementary-information-on-the-severity-of-coronary-artery-disease
#19
Kentaro Arakawa, Mutsuki Ohno, Mutsuo Horii, Tomoaki Ishigami, Kazuo Kimura, Kouichi Tamura
BACKGROUND AND AIMS: Endothelial dysfunction and coronary artery calcification (CAC) may represent two distinct and separate processes in the development of coronary atherosclerosis. However, the interaction between these factors in determining the development of coronary artery disease (CAD) is uncertain. METHODS: Brachial artery flow-mediated dilatation (FMD) was measured by high-resolution ultrasound before coronary angiography, in 156 patients undergoing coronary CT angiography on suspicion of CAD (M/F 100/56, age 67 ± 11yrs)...
November 3, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29131799/multi-slice-computed-tomography-assessment-of-everolimus-eluting-absorb-bioresorbable-scaffold-in-comparison-with-metallic-drug-eluting-stents-from-the-absorb-japan-randomized-trial
#20
Kengo Tanabe, Jeffrey J Popma, Ken Kozuma, Shigeru Saito, Toshiya Muramatsu, Sunao Nakamura, Atsuo Namiki, Yoshihiro Morino, Nobuhisa Hagiwara, Masaaki Uematsu, Tomohiro Kawasaki, Kenshi Fujii, Patrick W Serruys, Yoshinobu Onuma, Shihwa Ying, Hajime Kusano, Gregg W Stone, Takeshi Kimura
AIMS: Blooming artifacts limit accurate coronary assessment by multi-slice computed tomography (MSCT) in metallic stents. We sought to investigate whether bioresorbable vascular scaffold (BVS) could be better assessed by MSCT. Methods and Results: Among 400 patients in the randomized ABSORB Japan trial, a pre-specified MSCT sub-study was performed in 98 patients (103 lesions) in the BVS arm and 49 patients (49 lesions) in the cobalt chromium everolimus-eluting stent (CoCr-EES) arm at 13-month prior to follow-up angiography...
November 14, 2017: EuroIntervention
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