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https://www.readbyqxmd.com/read/28335909/erratum-to-2016-scct-str-guidelines-for-coronary-artery-calcium-scoring-of-noncontrast-noncardiac-chest-ct-scans-a-report-of-the-society-of-cardiovascular-computed-tomography-and-society-of-thoracic-radiology-j-cardiovasc-comput-tomogr-11-2017-74-84
#1
Harvey S Hecht, Paul Cronin, Michael J Blaha, Matthew J Budoff, Ella A Kazerooni, Jagat Narula, David Yankelevitz, Suhny Abbara
No abstract text is available yet for this article.
March 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28321775/presence-and-extent-of-cardiac-computed-tomography-angiography-defined-coronary-artery-disease-in-patients-presenting-with-syncope
#2
S Altintas, T Dinh, N G H M Marcks, M Kok, A J J Aerts, B Weijs, Y Blaauw, J E Wildberger, M Das, B L J H Kietselaer, H J G M Crijns
BACKGROUND: In syncope patients, presence of coronary artery disease (CAD) is associated with poor prognosis. However, data concerning CAD prevalence in syncope patients without known cardiovascular disease are lacking. Therefore, the aim of this study was to investigate presence and extent of CAD in syncope patients. METHODS: We included 142 consecutive patients presenting with syncope at the outpatient cardiology clinic who underwent coronary computed tomography (CT) angiography...
March 20, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28320601/coronary-atherosclerosis-in-indigenous-south-american-tsimane-a-cross-sectional-cohort-study
#3
Hillard Kaplan, Randall C Thompson, Benjamin C Trumble, L Samuel Wann, Adel H Allam, Bret Beheim, Bruno Frohlich, M Linda Sutherland, James D Sutherland, Jonathan Stieglitz, Daniel Eid Rodriguez, David E Michalik, Chris J Rowan, Guido P Lombardi, Ram Bedi, Angela R Garcia, James K Min, Jagat Narula, Caleb E Finch, Michael Gurven, Gregory S Thomas
BACKGROUND: Conventional coronary artery disease risk factors might potentially explain at least 90% of the attributable risk of coronary artery disease. To better understand the association between the pre-industrial lifestyle and low prevalence of coronary artery disease risk factors, we examined the Tsimane, a Bolivian population living a subsistence lifestyle of hunting, gathering, fishing, and farming with few cardiovascular risk factors, but high infectious inflammatory burden. METHODS: We did a cross-sectional cohort study including all individuals who self-identified as Tsimane and who were aged 40 years or older...
March 16, 2017: Lancet
https://www.readbyqxmd.com/read/28319943/femoral-neck-x-ray-absorptiometry-parameters-and-peripheral-quantitative-computer-tomography-tibial-cortical-density-predict-survival-in-dialysis-patients
#4
Natalie Yap, Phillip Wong, Stella McGinn, Maria-Liza Nery, Jean Doyle, Lynda Wells, Phillip Clifton-Bligh, Roderick J Clifton-Bligh
BACKGROUND: Low bone mineral density (BMD) is a known independent predictor of mortality in the general elderly population. However, studies in patients with end-stage renal disease (ESRD) are limited. The present study evaluated mortality during long-term follow-up in a population of patients having dialysis for ESRD, in whom BMD was also measured. METHODS: Fifty-eight patients with ESRD were recruited consecutively from a dialysis clinic and followed prospectively for 6 years...
March 21, 2017: Nephron
https://www.readbyqxmd.com/read/28293706/coronary-atherosclerotic-burden-vs-coronary-vascular-function-in-diabetic-and-nondiabetic-patients-with-normal-myocardial-perfusion-a-propensity-score-analysis
#5
Roberta Assante, Wanda Acampa, Emilia Zampella, Parthiban Arumugam, Carmela Nappi, Valeria Gaudieri, Mariarosaria Panico, Mario Magliulo, Christine M Tonge, Mario Petretta, Alberto Cuocolo
PURPOSE: To assess the relationship between coronary atherosclerotic burden and vascular function in diabetic and nondiabetic patients after balancing for coronary risk factors. METHODS: We studied 672 patients without overt coronary artery disease and normal myocardial perfusion on stress (82)Rb PET/CT imaging. To account for differences in baseline characteristics between diabetic patients and nondiabetic patients, we created a propensity score-matched cohort considering clinical variables and coronary risk factors...
March 14, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28292668/free-dna-precipitates-calcium-phosphate-apatite-crystals-in-the-arterial-wall-in%C3%A2-vivo
#6
Raphaël Coscas, Marie Bensussan, Marie-Paule Jacob, Liliane Louedec, Ziad Massy, Jeremy Sadoine, Michel Daudon, Catherine Chaussain, Dominique Bazin, Jean-Baptiste Michel
BACKGROUND AND AIMS: The arterial wall calcium score and circulating free DNA levels are now used in clinical practice as biomarkers of cardiovascular risk. Calcium phosphate apatite retention in the arterial wall necessitates precipitation on an anionic platform. Here, we explore the role of tissue-free DNA as such a platform. METHODS: The first step consisted of histological observation of samples from human and rat calcified arteries. Various stains were used to evaluate colocalization of free DNA with calcified tissue (alizarin red, fluorescent Hoechst, DNA immunostaining and TUNEL assay)...
March 4, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28281025/ct-myocardial-perfusion-imaging-current-status-and-future-perspectives
#7
Dong Hyun Yang, Young-Hak Kim
Computed tomography myocardial perfusion (CTP) combined with coronary computed tomography angiography (CCTA) may constitute a "1-stop shop" for the noninvasive diagnosis of hemodynamically significant coronary stenosis during a single CT examination. CTP shows high diagnostic performance and provides incremental value over CCTA for the detection of hemodynamically significant coronary stenosis in patients with a high Agatston calcium score or coronary artery stents. Future studies should determine the optimal protocol and clinical value of CTP for guiding revascularization strategy and prognostication...
March 9, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28279438/relation-of-epicardial-adipose-tissue-radiodensity-to-coronary-artery-calcium-on-cardiac-computed-tomography-in-patients-at-high-risk-for-cardiovascular-disease
#8
Bas T Franssens, Hendrik M Nathoe, Frank L J Visseren, Yolanda van der Graaf, Tim Leiner
Adipose tissue radiodensity detected by computed tomography (CT) is hypothesized to be associated with differences in adipose tissue composition which may contribute to the development of coronary atherosclerosis independent of epicardial adipose tissue volume. The aim of the present study is to quantify the relation between epicardial adipose tissue radiodensity and presence, distribution, and density of coronary artery calcium (CAC) in patients at high risk for cardiovascular disease. A total of 140 patients of the Secondary Manifestations of ARTerial disease (SMART) study underwent cardiac-CT angiography...
February 11, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28248196/automatic-segmentation-and-quantification-of-the-cardiac-structures-from-non-contrast-enhanced-cardiac-ct-scans
#9
Rahil Shahzad, Daniel Bos, Ricardo Budde, Karlijn Pellikaan, Wiro Niessen, Aad van der Lugt, Theo van Walsum
Early structural changes to the heart, including the chambers and the coronary arteries, provide important information on pre-clinical heart disease like cardiac failure. Currently, contrast-enhanced cardiac computed tomography angiography (CCTA) is the preferred modality for the visualization of the cardiac chambers and the coronaries. In clinical practice not every patient undergoes a CCTA scan; many patients receive only a non-contrast-enhanced calcium scoring CT scan (CTCS), which has less radiation dose and does not require the administration of contrast agent...
March 1, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28209366/quantifying-aortic-valve-calcification-using-coronary-computed-tomography-angiography
#10
Abdulrahman M Alqahtani, Kevin E Boczar, Vinay Kansal, Kwan Chan, Girish Dwivedi, Benjamin J W Chow
INTRODUCTION: Aortic valve calcification (AVC) has been associated with major adverse cardiovascular events and all-cause mortality. We sought to develop and validate a method to quantify AVC using coronary CT angiography (CTA). METHODS: Of 59 patients who underwent both non-contrast and contrast enhanced coronary CTA, 25 patients served as the derivation cohort and 34 patients served as the validation cohort. For non-contrast enhanced CT, quantification of AVC was performed using the Agatston method for coronary artery calcification (CAC)...
January 30, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28209099/does-calcium-score-in-great-pelvic-vessels-predict-colorectal-anastomotic-leakage-a-prospective-study-of-one-hundred-anastomoses
#11
M T Norooz, H Moradi, M Safdarian, F Jahangiri, H A Amoli
BACKGROUND: Anastomotic leakage is one of the most severe surgical complications following surgery. This prospective study was designed to investigate an association between the calcification in the descending aorta and its major branches using a calcium-scoring software and colorectal anastomotic leakage. METHODS: From January 2012 to March 2013, one hundred patients underwent surgeries involving colorectal anastomosis procedures. Calcium score in descending aorta and great pelvic vessels was measured using the Syngo-CT 2006G-W software...
September 2016: Acta Gastro-enterologica Belgica
https://www.readbyqxmd.com/read/28193446/usefulness-of-calcium-scoring-as-a-screening-examination-in-patients-with-a-history-of-kawasaki-disease
#12
Andrew M Kahn, Matthew J Budoff, Lori B Daniels, Jun Oyamada, John B Gordon, Jane C Burns
Subsets of patients with a remote history of Kawasaki disease (KD) have coronary artery aneurysms with associated risks of late morbidity. In a pilot study, we previously showed that computed tomography (CT) coronary artery calcium (CAC) scoring detects late CAC in patients with aneurysms and a remote history of KD. We performed CT calcium volume scoring in 166 subjects (median age 19.5 years) with a remote history of KD (median interval from KD to CT 15.1 years). Coronary arteries were classified as normal (n = 100), transiently dilated (n = 23), persistently dilated (n = 10), remodeled aneurysm (n = 9), or aneurysm (n = 24) based on echocardiography...
April 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28174196/sex-differences-in-the-performance-of-cardiac-computed-tomography-compared-with-functional-testing-in-evaluating-stable-chest-pain-subanalysis-of-the-multicenter-randomized-crescent-trial-calcium-imaging-and-selective-ct-angiography-in-comparison-to-functional
#13
Marisa Lubbers, Adriaan Coenen, Tobias Bruning, Tjebbe Galema, Jurgen Akkerhuis, Boudewijn Krenning, Paul Musters, Mohamed Ouhlous, Ahno Liem, Andre Niezen, Admir Dedic, Ron van Domburg, Miriam Hunink, Koen Nieman
BACKGROUND: Cardiac computed tomography (CT) represents an alternative diagnostic strategy for women with suspected coronary artery disease, with potential benefits in terms of effectiveness and cost-efficiency. METHODS AND RESULTS: The CRESCENT trial (Calcium Imaging and Selective CT Angiography in Comparison to Functional Testing for Suspected Coronary Artery Disease) prospectively randomized 350 patients with stable angina (55% women; aged 55±10 years), mostly with an intermediate coronary artery disease probability, between cardiac CT and functional testing...
February 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28167282/comparison-of-low-dose-coronary-artery-calcium-scoring-using-low-tube-current-technique-and-hybrid-iterative-reconstruction-vs-filtered-back-projection
#14
Nada Sulaiman, Jeanette Soon, Jong Kwan Park, Christopher Naoum, Shaw-Hua Kueh, Philipp Blanke, Darra Murphy, Jennifer Ellis, Cameron J Hague, Jonathon Leipsic
INTRODUCTION: We sought to validate whether low dose CACS CT with hybrid IR (HIR) could replace standard dose filtered back projection (FBP). METHOD: We enrolled 100 patients to undergo low dose CACS CT with HIR, in addition to routine full dose FBP. RESULTS: No significant difference between full and low dose CT in Agatston score 138.2±360.6 vs. 137.3±356.4 (p=0.272) or calcium mass score 19±48.3 vs. 18.7±49 (p=0.8), respectively. Bland-Altman analysis showed no systematic bias...
February 2, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28150282/socioeconomic-status-relationship-with-coronary-artery-calcification-and-pericardial-fat
#15
Hussein A Nafakhi, Abdulameer Almosawi, Hasan Alnafakh, Widad Mousa
BACKGROUND: Little data currently exist supporting the correlation of socioeconomic status (SES) to markers of subclinical coronary atherosclerosis. The main aim was to investigate the relationship of SES measured by economic status and educational level with coronary artery calcification (CAC) and pericardial fat volume (PFV) assessed by multi-detector CT (MDCT). METHODS: Two hundred twenty consecutive patients with suspected coronary artery disease who underwent 64-slice MDCT angiography for assessment of coronary atherosclerosis were recruited between January 2014 and March 2015...
February 2, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28144819/no-psychological-distress-in-sportsmen-aged-45%C3%A2-years-and-older-after-cardiovascular-screening-including-cardiac-ct-the-measuring-athlete-s-risk-of-cardiovascular-events-marc-study
#16
M M Schurink, T L Braber, N H J Prakken, P A F M Doevendans, F J G Backx, D E Grobbee, R Rienks, H M Nathoe, M L Bots, B K Velthuis, A Mosterd
BACKGROUND: Psychological distress caused by cardiovascular pre-participation screening (PPS) may be a reason not to implement a PPS program. We assessed the psychological impact of PPS, including cardiac computed tomography (CT), in 318 asymptomatic sportsmen aged ≥45 years. METHODS: Coronary artery disease (CAD) was defined as a coronary artery calcium score ≥100 Agatson units and/or ≥50% luminal stenosis on contrast-enhanced cardiac CT. Psychological impact was measured with the Impact of Event Scale (IES) (seven items) on a six-point scale (grade 0-5)...
January 31, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28130653/addressing-knowledge-gaps-in-the-2013-acc-aha-guideline-on-the-assessment-of-cardiovascular-risk-a-review-of-recent-coronary-artery-calcium-literature
#17
REVIEW
Vasanth Sathiyakumar, Roger S Blumenthal, Khurram Nasir, Seth S Martin
PURPOSE OF REVIEW: Coronary artery calcium (CAC) has been proposed as an integrator of information from traditionally measured, non-traditionally measured, and unmeasured risk factors for coronary atherosclerosis. The 2013 American College of Cardiology/American Heart Association Guideline on the Assessment of Cardiovascular Risk identified several knowledge gaps regarding CAC, including radiation risks, cost-effectiveness, and improving discrimination and reclassification of estimated risk over the Pooled Cohort Equations in the ACC/AHA Atherosclerotic Cardiovascular Disease Estimator...
February 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28102510/influence-of-dose-reduction-and-iterative-reconstruction-on-ct-calcium-scores-a-multi-manufacturer-dynamic-phantom-study
#18
N R van der Werf, M J Willemink, T P Willems, M J W Greuter, T Leiner
To evaluate the influence of dose reduction in combination with iterative reconstruction (IR) on coronary calcium scores (CCS) in a dynamic phantom on state-of-the-art CT systems from different manufacturers. Calcified inserts in an anthropomorphic chest phantom were translated at 20 mm/s corresponding to heart rates between 60 and 75 bpm. The inserts were scanned five times with routinely used CCS protocols at reference dose and 40 and 80% dose reduction on four high-end CT systems. Filtered back projection (FBP) and increasing levels of IR were applied...
January 19, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28095950/ct-coronary-angiography-vs-coronary-artery-calcium-scoring-for-the-occupational-assessment-of-military-aircrew
#19
COMPARATIVE STUDY
Iain Parsons, Chris Pavitt, Rebecca Chamley, Jo d'Arcy, Ed Nicol
INTRODUCTION: To ensure flight safety military aircrew undergo regular clinical and occupational assessment. Coronary artery calcium scoring (CACS) has been established as an imaging modality to noninvasively assess coronary artery disease (CAD). CT coronary angiography (CTCA) potentially offers a more accurate assessment of CAD, but has not been formally assessed in military aircrew. This retrospective cohort study is designed to compare the theoretical differences in downstream investigations and occupational outcomes in aircrew with suspected CAD comparing CTCA with existing CACS pathways...
February 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28088646/bone-microarchitecture-in-adolescent-boys-with-autism-spectrum-disorder
#20
Ann M Neumeyer, Natalia Cano Sokoloff, Erin McDonnell, Eric A Macklin, Christopher J McDougle, Madhusmita Misra
BACKGROUND: Boys with autism spectrum disorder (ASD) have lower areal bone mineral density (aBMD) than typically developing controls (TDC). Studies of volumetric BMD (vBMD) and bone microarchitecture provide information about fracture risk beyond that provided by aBMD but are currently lacking in ASD. OBJECTIVES: To assess ultradistal radius and distal tibia vBMD, bone microarchitecture and strength estimates in adolescent boys with ASD compared to TDC. DESIGN/METHODS: Cross-sectional study of 34 boys (16 ASD, 18 TDC) that assessed (i) aBMD at the whole body (WB), WB less head (WBLH), hip and spine using dual X-ray absorptiometry (DXA), (ii) vBMD and bone microarchitecture at the ultradistal radius and distal tibia using high-resolution peripheral quantitative CT (HRpQCT), and (iii) bone strength estimates (stiffness and failure load) using micro-finite element analysis (FEA)...
January 11, 2017: Bone
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