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https://www.readbyqxmd.com/read/27906915/the-value-of-ct-cardiac-angiography-and-ct-calcium-score-testing-in-a-modern-cardiology-service-in-new-zealand-a-report-of-a-single-centre-eight-year-experience-from-5-237-outpatient-procedures
#1
Chris Ellis, Greg Gamble, Colin Edwards, Niels van Pelt, Ruvin Gabriel, Boris Lowe, Jonathan Christiansen, Andrew To, Helen Winch, Mark Osborne, John Ormiston, Malcolm Legget
BACKGROUND: Computed tomographic (CT) cardiac angiography is of increasing value in several areas of patient management in cardiology. We assessed the ability of CT cardiac angiography to effectively 'rule out' severe coronary stenoses in patients presenting with 'atypical' symptoms and/or an equivocal stress test, which offers a new approach to the management of coronary artery disease. We also examined the use of the CT calcium score test in cardiovascular (CVS) risk assessment. METHODS: From a large single centre (Mercy Hospital) in Auckland, using a prospectively acquired, comprehensive database, we audited the entire eight-year experience of 5,169 patients (7/8/06 to 31/1/14) who underwent 5,237 64-slice computed tomographic (CT) cardiac angiogram or CT calcium score tests (GE Lightspeed scanner)...
December 2, 2016: New Zealand Medical Journal
https://www.readbyqxmd.com/read/27884729/rationale-and-design-of-the-coronary-artery-calcium-consortium-a-multicenter-cohort-study
#2
Michael J Blaha, Seamus P Whelton, Mahmoud Al Rifai, Zeina A Dardari, Leslee J Shaw, Mouaz H Al-Mallah, Kuni Matsushita, John A Rumberger, Daniel S Berman, Matthew J Budoff, Michael D Miedema, Khurram Nasir
BACKGROUND: Although coronary artery calcium (CAC) has been investigated for over two decades, there is very limited data on the association of CAC with cause of death. The CAC Consortium is a large ongoing multi-center observational cohort of individuals who underwent non-contrast cardiac-gated CAC testing and systematic, prospective, long-term follow-up for mortality with ascertainment of cause of death. METHODS: Four participating institutions from three states within the US (California, Minnesota, and Ohio) have contributed individual-level patient data to the CAC Consortium (spanning years 1991-2010)...
November 11, 2016: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/27882428/progression-of-noncalcified-and-calcified-coronary-plaque-by-ct-angiography-in-sle
#3
Aisha Khan, Armin Arbab-Zadeh, Adnan N Kiani, Laurence S Magder, Michelle Petri
Premature coronary artery disease remains the major cause of late death in systemic lupus erythematosus (SLE). Coronary artery calcium (CAC) represents an advanced stage of atherosclerosis, whereas noncalcified coronary atherosclerotic plaque (NCP) typically is more prone to trigger acute coronary events. The aim of this study was to assess the stability of NCP over time and identify factors associated with changes in NCP in patients with SLE. CT coronary angiography and calcium scanning were performed at baseline and follow-up in thirty-six SLE patients...
November 23, 2016: Rheumatology International
https://www.readbyqxmd.com/read/27882093/atherosclerotic-coronary-artery-disease-the-accuracy-of-measures-to-diagnose-preclinical-atherosclerosis
#4
Xianchi Li, Min Liu, Rongrong Sun, Yi Zeng, Shuang Chen, Peiying Zhang
Different methods can be used to diagnose early pre-clinical stage atherosclerosis. The present study was carried out to evaluate the efficiency of these methods. Measures including carotid intima-media thickness (CIMT), pulse wave velocity (PWV), and coronary calcium score (CCS) were evalutated for the detection of coronary artery disease (CAD). We studied the clinical and biochemical profiles of individuals with non-CAD and CAD to assess measures of pre-clinical atherosclerosis. The association between CIMT, PWV and CCS on the one hand, and the coronary atherosclerosis on the other, was studied...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27852512/the-association-of-secondhand-tobacco-smoke-and-ct-angiography-verified-coronary-atherosclerosis
#5
David F Yankelevitz, Matthew D Cham, Harvey Hecht, Rowena Yip, Joseph Shemesh, Jagat Narula, Claudia I Henschke
OBJECTIVES: The aim of this study was to assess the relationship of the extent of atherosclerosis on coronary computed tomographic angiography to the extent of secondhand tobacco smoke (SHTS) exposure in asymptomatic never smokers. BACKGROUND: A dose-related association between SHTS and coronary artery calcium has been reported, but the total extent of atherosclerosis has not been investigated. METHODS: Two hundred sixty-eight never smokers, ages 40 to 80 years, completed a questionnaire assessing risk factors and extent of lifetime SHTS exposure, providing a total SHTS exposure score...
November 5, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27844188/correlation-and-predictive-value-of-aortic-root-calcification-markers-with-coronary-artery-calcification-and-obstructive-coronary-artery-disease
#6
Christian Tesche, Carlo N De Cecco, Andrew Stubenrauch, Brian E Jacobs, Akos Varga-Szemes, Sheldon E Litwin, B Devon Ball, Moritz Baquet, David Jochheim, Ullrich Ebersberger, Richard R Bayer, Ellen Hoffmann, Daniel H Steinberg, U Joseph Schoepf
OBJECTIVE: To evaluate the correlation between aortic root calcification (ARC) markers and coronary artery calcification (CAC) derived from coronary artery calcium scoring (CACS) and their ability to predict obstructive coronary artery disease (CAD). METHODS: We retrospectively analyzed 189 patients (47% male, age 60.3 ± 11.1 years) with an intermediate probability of CAD who underwent clinically indicated CACS and coronary CT angiography (CCTA). ARC markers [aortic root calcium score (ARCS) and volume (ARCV)] were calculated and compared to CAC markers: coronary artery calcium score (CACS), volume (CACV), and mass (CACM)...
November 14, 2016: La Radiologia Medica
https://www.readbyqxmd.com/read/27843187/coronary-ct-angiography-a-retrospective-study-of-220-cases
#7
V K Maurya, R Ravikumar, Pankaj Sharma, Naveen Agrawal, Mukul Bhatia
BACKGROUND: Coronary artery disease (CAD) is a common cause of morbidity and mortality worldwide. Although catheter coronary angiography (CCA) is the gold standard in the diagnosis and management of CAD, coronary CT angiography (CCTA) has shown promising results for the same. METHODS: CCTA was done using 40 slice multi-detector CT (Somatom Sensation, Siemens, Germany) machine in 220 patients of suspected CAD. Patients were classified as (a) normal (no calcific or soft plaque), (b) non-obstructive coronary disease (<50% stenosis), (c) obstructive coronary disease (>50% stenosis), or (d) a non-diagnostic study...
October 2016: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/27824692/long-term-marathon-running-is-associated-with-low-coronary-plaque-formation-in-women
#8
William O Roberts, Robert S Schwartz, Stacia Merkel Kraus, Jonathan G Schwartz, Gretchen Peichel, Ross F Garberich, John R Lesser, Stephen N Oesterle, Kelly K Wickstrom, Thomas Knickelbine, Kevin M Harris
INTRODUCTION: Marathon running is presumed to improve cardiovascular risk, but health benefits of high volume running are unknown. High resolution coronary computed tomography angiography (CCTA) and a cardiac risk factor assessment were completed in women with long term marathon running histories to compare to sedentary women with similar risk factors. METHODS: Women who had run at least one marathon per year for 10-25 years underwent CCTA, 12-lead ECG, blood pressure and heart rate measurement, lipid panel, and a demographic/health risk factor survey...
November 7, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27796543/thoracic-aorta-calcification-but-not-inflammation-is-associated-with-increased-cardiovascular-disease-risk-results-of-the-camona-study
#9
Björn A Blomberg, Pim A de Jong, Anders Thomassen, Marnix G E Lam, Werner Vach, Michael H Olsen, Willem P T M Mali, Jagat Narula, Abass Alavi, Poul F Høilund-Carlsen
PURPOSE: Arterial inflammation and vascular calcification are regarded as early prognostic markers of cardiovascular disease (CVD). In this study we investigated the relationship between CVD risk and arterial inflammation ((18)F-FDG PET/CT imaging), vascular calcification metabolism (Na(18)F PET/CT imaging), and vascular calcium burden (CT imaging) of the thoracic aorta in a population at low CVD risk. METHODS: Study participants underwent blood pressure measurements, blood analyses, and (18)F-FDG and Na(18)F PET/CT imaging...
October 29, 2016: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27776671/submillisievert-coronary-calcium-quantification-using-model-based-iterative-reconstruction-a-within-patient-analysis
#10
Annemarie M den Harder, Jelmer M Wolterink, Martin J Willemink, Arnold M R Schilham, Pim A de Jong, Ricardo P J Budde, Hendrik M Nathoe, Ivana Išgum, Tim Leiner
PURPOSE: To determine the effect of model-based iterative reconstruction (IR) on coronary calcium quantification using different submillisievert CT acquisition protocols. METHODS: Twenty-eight patients received a clinically indicated non contrast-enhanced cardiac CT. After the routine dose acquisition, low-dose acquisitions were performed with 60%, 40% and 20% of the routine dose mAs. Images were reconstructed with filtered back projection (FBP), hybrid IR (HIR) and model-based IR (MIR) and Agatston scores, calcium volumes and calcium mass scores were determined...
November 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27765596/a-new-contrast-enhancement-protocol-for-subtraction-coronary-computed-tomography-requiring-a-short-breath-holding-time
#11
Takayoshi Yamaguchi, Katsuhiro Ichikawa, Daichi Takahashi, Teppei Sugaya, Jungo Furuya, Keiichi Igarashi
RATIONALE AND OBJECTIVES: We have developed a new contrast enhancement protocol for subtraction coronary computed tomography (SCCTA) requiring a short breath-holding time. In the protocol, test and main boluses were sequentially and automatically injected, and correct timings for pre-contrast and contrast-enhanced scans for main bolus were automatically determined only by the test bolus tracking. Combined with a fixed short main bolus injection for 7 seconds, the breath-holding time was shortened as possible...
October 17, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27765543/the-ratio-between-visceral-and-subcutaneous-abdominal-fat-assessed-by-computed-tomography-is-an-independent-predictor-of-mortality-and-cardiac-events
#12
Ricardo Ladeiras-Lopes, Francisco Sampaio, Nuno Bettencourt, Ricardo Fontes-Carvalho, Nuno Ferreira, Adelino Leite-Moreira, Vasco Gama
INTRODUCTION AND OBJECTIVES: Obesity is an important cardiovascular risk factor and the location of fat deposits seems to be an important determinant of its metabolic impact. Visceral adipose tissue (VAT) exerts a harmful effect on metabolic homeostasis, but few longitudinal studies have evaluated the prognostic impact of the ratio of VAT to subcutaneous adipose tissue (SAT). This study aimed to evaluate whether the VAT/SAT ratio was associated with all-cause mortality and cardiac events...
October 17, 2016: Revista Española de Cardiología
https://www.readbyqxmd.com/read/27743881/estimation-of-cardiovascular-risk-on-routine-chest-ct-ordinal-coronary-artery-calcium-scoring-as-an-accurate-predictor-of-agatston-score-ranges
#13
Lea Azour, Michael A Kadoch, Thomas J Ward, Corey D Eber, Adam H Jacobi
BACKGROUND: Coronary artery calcium (CAC) is often identified on routine chest computed tomography (CT). The purpose of our study was to evaluate whether ordinal scoring of CAC on non-gated, routine chest CT is an accurate predictor of Agatston score ranges in a community-based population, and in particular to determine the accuracy of an ordinal score of zero on routine chest CT. METHODS: Two thoracic radiologists reviewed consecutive same-day ECG-gated and routine non-gated chest CT scans of 222 individuals...
October 5, 2016: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/27742177/impact-of-advanced-modeled-iterative-reconstruction-on-coronary-artery-calcium-quantification
#14
Michael Messerli, Fabian Rengier, Lotus Desbiolles, Niklas F Ehl, Ralf W Bauer, Sebastian Leschka, Hatem Alkadhi, Simon Wildermuth, Claas P Nähle
RATIONALE AND OBJECTIVES: To evaluate the influence of advanced modeled iterative reconstruction (ADMIRE) on the coronary artery calcium (CAC) scores by computed tomography (CT). MATERIALS AND METHODS: Sixty patients underwent CAC imaging with dual-source 192-slice CT. Agatston, volume and mass score were calculated from filtered back projection (FBP) and iterative reconstructions with different levels of ADMIRE. Friedman test and Wilcoxon rank sum test were used for multiple comparisons of CAC values and the difference ratio among different ADMIRE groups using FBP as reference...
October 11, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27717578/the-dubious-value-of-coronary-calcium-scoring-on-lung-cancer-screening-ct
#15
Adam Bernheim, William F Auffermann, Arthur E Stillman
No abstract text is available yet for this article.
October 4, 2016: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/27703657/lower-extremity-arterial-calcification-as-a-predictor-of-coronary-atherosclerosis-in-patients-with-peripheral-arterial-disease
#16
Hwa Seon Shin, Mi Jung Park, Kyung Nyeo Jeon, Jae Min Cho, Kyung Soo Bae, Dae Seob Choi, Jae Boem Na, Ho Cheol Choi, Hye Young Choi, Ji Eun Kim, Soo Bueum Cho, Sung Eun Park
BACKGROUND: Until now, there has been no study on the relationship between the calcification of the lower extremity arteries and significant coronary arterial disease (CAD). OBJECTIVES: To evaluate whether lower extremity calcium scores (LECS) are associated with CAD and whether this can predict multivessel-CAD in patients with peripheral arterial disease (PAD). PATIENTS AND METHODS: We retrospectively enrolled 103 PAD patients without cardiac symptoms or known CAD...
April 2016: Iranian Journal of Radiology: a Quarterly Journal Published By the Iranian Radiological Society
https://www.readbyqxmd.com/read/27680414/computation-of-calcium-score-with-dual-energy-computed-tomography-a-phantom-study
#17
Vidhya Kumar, James K Min, Xin He, Subha V Raman
Dual-energy computed tomography (DECT) improves material and tissue characterization compared with single-energy CT; we sought to validate coronary calcium quantification in advancing cardiovascular DECT. In an anthropomorphic phantom, agreement between measurements was excellent, and Bland-Altman analysis demonstrated minimal bias. Compared with the known calcium mass for each phantom, calcium mass by DECT was highly accurate. Noncontrast DECT yields accurate calcium measures and warrants consideration in cardiac protocols for additional tissue characterizations...
September 27, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27679688/diagnostic-accuracy-of-coronary-calcium-score-less-than-100-in-excluding-coronary-artery-disease
#18
Reza Hanifehpour, Marzieh Motevalli, Hossein Ghanaati, Mona Shahriari, Mounes Aliyari Ghasabeh
BACKGROUND: Coronary artery calcium score (CACS) is a quantitative assessment of calcifications and an established predictor of cardiovascular events. OBJECTIVES: In this study, we evaluated the diagnostic accuracy, negative predictive value (NPV), positive predictive value (PPV), specificity and sensitivity of CACS less than 100 in predicting significant coronary artery stenosis in patients with risk of coronary artery disease (CAD) in a vessel-based analysis. PATIENTS AND METHODS: A cross sectional study was carried out on a study population of 2527 consecutive stable patients with symptoms suggestive of CAD who were referred for coronary computed tomographic angiography (CCTA)...
April 2016: Iranian Journal of Radiology: a Quarterly Journal Published By the Iranian Radiological Society
https://www.readbyqxmd.com/read/27677900/a-mathematical-algorithm-for-quantification-of-ct-image-noise
#19
Edmund K Kerut, Filip To, Michael Turner, James McKinnie, Thomas Giles
Quantification of computed tomography (CT) noise helps in determination of radiation dosage requirements for adequate image quality. Clinical methods used include calculation of the standard deviation (SD) of a selected region of interest (ROI). In industry, wavelet decomposition has been used for image compression while removing high-frequency noise. We evaluated a cohort of 74 consecutive patients referred for coronary artery calcium scoring and quantitated noise within a 16×16 ROI in the ascending aorta using the traditional SD method and also using a two-dimensional dyadic wavelet decomposition method...
September 28, 2016: Echocardiography
https://www.readbyqxmd.com/read/27677761/national-trends-among-radiologists-in-reporting-coronary-artery-calcium-in-non-gated-chest-computed-tomography
#20
Jacobo Kirsch, Felipe Martinez, David Lopez, Gian M Novaro, Craig R Asher
Coronary artery calcification (CAC) is a known risk factor for adverse outcomes in the general population and in patients with coronary artery disease. We performed a survey of United States radiologists to evaluate the trends in reporting the presence or absence of CAC on NCCT examinations. An 11 multiple-choice questionnaire was distributed to members of the American College of Radiology, and 530 members participated in the study. Eighty-seven percent of the analyzed group report the presence of CAC on standard CT scans of the chest, and approximately half them (52 %) use a qualitative modifier...
September 27, 2016: International Journal of Cardiovascular Imaging
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