keyword
MENU ▼
Read by QxMD icon Read
search

CT Coronary

keyword
https://www.readbyqxmd.com/read/28723768/detection-of-incidental-cardiac-findings-in-noncardiac-chest-computed-tomography
#1
Francesco Secchi, Giovanni Di Leo, Moreno Zanardo, Marco Alì, Paola Maria Cannaò, Francesco Sardanelli
The aim of the study was to estimate the rate of incidental cardiac findings (ICF) in patients undergoing noncardiac chest CT.An experienced radiologist retrospectively reviewed 237 consecutive patients (147 males and 90 females with median age of 69 years) undergoing a noncardiac chest CT. ICF at targeted review were compared to those mentioned in original reports (χ test).At review, ≥1 ICF was detected in 124/237 patients (52%), for a total of 229 ICF, 158 of them (69%) not originally mentioned. Valvular calcifications were unmentioned in 23/23 (100%) patients, main pulmonary artery dilation in 21/22 (96%), coronary calcifications in 69/86 (80%), right or left atrial dilation in 7/11 (64%), aortic atherosclerosis in 29/62 (47%), and ascending aorta dilatation in 8/18 (44%)...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28722134/location-variations-and-predictors-of-epicardial-fat-mapping-using-multi-detector-computed-tomography-to-assist-epicardial-ventricular-tachycardia-ablation
#2
Mariaileen Sourwine, Jean Jeudy, Brian Miller, Rama Vunnam, Hasan Imanli, Olurotimi Mesubi, Martine Etienne-Mesubi, Vincent See, Stephen Shorofsky, Timm Dickfeld
BACKGROUND: A significant number of ventricular tachycardia circuits are located close to the epicardial surface and are amendable to epicardial ablation. Epicardial fat often interferes with substrate mapping and ablation, though little is known regarding the distribution of fat and its fluctuation with the cardiac cycle. METHODS: We studied 40 patients who underwent a 64-slice MDCT in order to describe patterns of epicardial fat distribution, variation during cardiac cycle and clinical predictors of epicardial fat...
July 19, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28712701/impact-of-advanced-modeled-iterative-reconstruction-on-interreader-agreement-in-coronary-artery-measurements
#3
Tobias Gassenmaier, Isabel Distelmaier, Andreas M Weng, Thorsten A Bley, Thorsten Klink
OBJECTIVES: To evaluate the influence of advanced modeled iterative reconstruction (ADMIRE) on coronary artery computed tomography angiography (cCTA) measurements in comparison to filtered back projection (FBP). MATERIAL AND METHODS: Phantom scans and coronary CTA studies of 27 patients were acquired with a third generation dual-source CT scanner. Images were reconstructed using FBP and ADMIRE. Phantom measurements were used as reference standard. In patient studies, representative axial slices of each coronary artery segment without (n=308) and with coronary plaques (n=40) were assessed in identical positions for comparison of FBP and ADMIRE reconstructions...
July 1, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28710871/detection-and-quantification-of-coronary-calcium-from-dual-energy-chest-x-rays-phantom-feasibility-study
#4
Bo Zhou, Di Wen, Katelyn Nye, Robert C Gilkeson, Brendan Eck, David Jordan, David L Wilson
PURPOSE: We have demonstrated the ability to identify coronary calcium, a reliable biomarker of coronary artery disease, using non-gated, 2-shot, dual energy (DE) chest x-ray imaging. Here we will use digital simulations, backed up by measurements, to characterize DE calcium signals and the role of potential confounds such as beam hardening, x-ray scatter, cardiac motion, and pulmonary artery pulsation. For the DE calcium signal, we will consider quantification, as compared to CT calcium score, and visualization...
July 15, 2017: Medical Physics
https://www.readbyqxmd.com/read/28708724/impact-of-ssf-on-diagnostic-performance-of-coronary-computed-tomography-angiography-within-1-heart-beat-in-patients-with-high-heart-rate-using-a-256-row-detector-computed-tomography
#5
Junfu Liang, Hui Wang, Lei Xu, Li Dong, Zhanming Fan, Rui Wang, Zhonghua Sun
OBJECTIVE: The aim of this study was to investigate the impact of a motion-correction algorithm on diagnostic accuracy of coronary computed tomography angiography (CCTA) within 1 heart beat in patients with high heart rate (HR) using a 256-row detector CT. METHOD: Sixty-four consecutive patients with known or suspected coronary artery disease (symptomatic) and with HR of 75 beats per minute or greater (mean [SD] HR, 82.6 [7.3] beats per minute) undergoing CCTA and invasive coronary angiography within 4 weeks were prospectively enrolled...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28705554/atrial-function-atrial-volume-and-cardiovascular-clinical-outcomes-in-patients-with-end-stage-renal-disease-a-study-of-cardiac-computed-tomography
#6
Laust Dupont, Simon Winther, Hanne Skou Jørgensen, Peter Bomholt, Hans Erik Bøtker, Morten Bøttcher, Per Ivarsen, My Svensson
BACKGROUND: Patients with chronic kidney disease (CKD) have an increased risk of cardiovascular events. Previous studies using 2-dimensional echocardiography show that left atrial end-diastolic volume (LAEDV) predicts cardiovascular outcomes and mortality in patients with CKD. However, contrast-enhanced cardiac CT may offers a more precise measure of atrial dimensions and function than 2-dimensional echocardiography and may provide improved predictionof patient outcome. AIM: The aim of the present study was to examine the association of LAEDV and left atrial ejection fraction (LAEF) assessed by CT with left ventricle end-diastolic volume (LVEDV), left ventricular mass, left ventricular ejection fraction and N-terminal plasma-pro-brain natriuretic peptide (NT-PRO-BNP)...
July 4, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28701474/detecting-human-coronary-inflammation-by-imaging-perivascular-fat
#7
Alexios S Antonopoulos, Fabio Sanna, Nikant Sabharwal, Sheena Thomas, Evangelos K Oikonomou, Laura Herdman, Marios Margaritis, Cheerag Shirodaria, Anna-Maria Kampoli, Ioannis Akoumianakis, Mario Petrou, Rana Sayeed, George Krasopoulos, Constantinos Psarros, Patricia Ciccone, Carl M Brophy, Janet Digby, Andrew Kelion, Raman Uberoi, Suzan Anthony, Nikolaos Alexopoulos, Dimitris Tousoulis, Stephan Achenbach, Stefan Neubauer, Keith M Channon, Charalambos Antoniades
Early detection of vascular inflammation would allow deployment of targeted strategies for the prevention or treatment of multiple disease states. Because vascular inflammation is not detectable with commonly used imaging modalities, we hypothesized that phenotypic changes in perivascular adipose tissue (PVAT) induced by vascular inflammation could be quantified using a new computerized tomography (CT) angiography methodology. We show that inflamed human vessels release cytokines that prevent lipid accumulation in PVAT-derived preadipocytes in vitro, ex vivo, and in vivo...
July 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28698323/performance-of-highly-sensitive-cardiac-troponin-t-assay-to-detect-ischaemia-at-pet-ct-in-low-risk-patients-with-acute-coronary-syndrome-a-prospective-observational-study
#8
Beata Morawiec, Stephane Fournier, Maxime Tapponnier, John O Prior, Pierre Monney, Vincent Dunet, Nathalie Lauriers, Frederique Recordon, Catalina Trana, Juan-Fernando Iglesias, Damian Kawecki, Olivier Boulat, Daniel Bardy, Sabine Lamsidri, Eric Eeckhout, Olivier Hugli, Olivier Muller
BACKGROUND: Highly sensitive troponin T (hs-TnT) assay has improved clinical decision-making for patients admitted with chest pain. However, this assay's performance in detecting myocardial ischaemia in a lowrisk population has been poorly documented. PURPOSE: To assess hs-TnT assay's performance to detect myocardial ischaemia at positron emission tomography/CT (PET-CT) in low-risk patients admitted with chest pain. METHODS: Patients admitted for chest pain with a nonconclusive ECG and negative standard cardiac troponin T results at admission and after 6 hours were prospectively enrolled...
July 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28697726/successful-percutaneous-coronary-intervention-in-the-setting-of-an-aberrant-left-coronary-artery-arising-from-the-right-coronary-cusp-in-a-patient-with-acute-coronary-syndrome-a-case-report
#9
Jung-Hee Lee, Jong-Seon Park
BACKGROUND: An aberrant origin of the left coronary artery (LCA) from the right coronary cusp (RCC) is an extremely rare congenital anomaly. We here report on successful percutaneous coronary intervention (PCI) in a patient presenting with acute coronary syndrome and an aberrant origin of the LCA from the RCC. CASE PRESENTATION: A 50-year-old man presented at our emergency department with recurrent resting chest pain. Following unsuccessful attempts at visualizing the left coronary artery using Judkins left and Amplatz catheters, an aortogram using a pigtail catheter suggested anomalous left coronary artery origin and showed a significant occlusive lesion at proximal left anterior descending artery...
July 11, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28695497/comparison-of-ctac-and-prone-imaging-for-the-detection-of-coronary-artery-disease-using-czt-spect
#10
Shimpei Ito, Akihiro Endo, Taiji Okada, Taku Nakamura, Takashi Sugamori, Nobuyuki Takahashi, Hiroyuki Yoshitomi, Kazuaki Tanabe
BACKGROUND: Cadmium-zinc-telluride (CZT) cameras have improved the evaluation of patients with chest pain. However, inferior/inferolateral attenuation artifacts similar to those seen with conventional Anger cameras persist. We added prone acquisitions and CT attenuation correction (CTAC) to the standard supine image acquisition and analyzed the resulting examinations. METHODS AND RESULTS: Seventy-two patients referred for invasive coronary angiography (CAG), and who also underwent rest/stress myocardial perfusion imaging (MPI) on a CZT camera in the supine and prone positions plus CTAC imaging, to examine known or suspected CAD between April 2013 and March 2014 were included...
July 10, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28694612/cerebral-and-coronary-vasculature-in-disease-associations-and-dissociations-in-the-south-indian-population
#11
Krishnan Srinivasan, Srinivasan Ravikumar, Sadanandavalli Retnaswami Chandra, Selva Ganapathy, G S Ravi
INTRODUCTION: Cerebrovascular accidents constitute the most common cause of disability all over the world. In India prevalence rate is 545 per 100000 and mortality rate is around 7.5 per thousand. Therefore the authors undertook a study on patients who underwent coronary artery bypass surgery (CABG). They were investigated for clinical and/or radiological evidence of cerebrovascular disease (CVD) with the aim to decide on early neurological intervention. PATIENTS AND METHODS: 210 patients who had undergone CABG were evaluated with neck vessel Doppler using high resolution duplex scanner system and computed tomography (CT) scan as well as MR angiogram (MRA) in addition to assessment of co morbid risk factors...
July 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28690285/myocardial-bridges-on-coronary-computed-tomography-angiography%C3%A3-correlation-with-intravascular-ultrasound-and-fractional-flow-reserve
#12
Signe Helene Forsdahl, Ian S Rogers, Ingela Schnittger, Shigemitsu Tanaka, Takumi Kimura, Vedant S Pargaonkar, Frandics P Chan, Dominik Fleischmann, Jennifer A Tremmel, Hans-Christoph Becker
BACKGROUND: Myocardial bridges (MB) are commonly seen on coronary CT angiography (CCTA) in asymptomatic individuals, but in patients with recurrent typical angina symptoms, yet no obstructive coronary artery disease (CAD), evaluation of their potential hemodynamic significance is clinically relevant. The aim of this study was to compare CCTA to invasive coronary angiography (ICA), including intravascular ultrasound (IVUS), to confirm MB morphology and estimate their functional significance in symptomatic patients...
July 7, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28684043/correlates-of-pericardial-adipose-tissue-volume-using-multidetector-ct-scanning-in-cardiac-patients-in-china
#13
Ting Ting Yang, Anne F Fish, Wei Min Kong, Xin Gao, De Jian Huang, Ji Tao Feng, Jun Ya Zhu, Tao Chen, Qing Qing Lou
BACKGROUND: Pericardial adipose tissue (PAT) is an emerging cardiovascular risk factor, yet much less is understood about PAT volume in Chinese adults, especially in relation to physical activity. The study explores associations between demographic and clinical variables and PAT volume, using multidetector computed tomography (MDCT) scanning in China. We also examined the relationship between PAT volume and coronary artery disease (CAD). METHODS: An observational, correlational study design was used...
June 30, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28678047/imaging-of-the-pulmonary-valve-in-the-adults
#14
Ricardo H Pignatelli, Cory Noel, S Chandra B Reddy
PURPOSE OF REVIEW: Pulmonary valve is the least imaged of the cardiac valves in adults. This review will address the strengths and the limitations of various imaging modalities that are commonly used for evaluation of pulmonary valve diseases in the adults. RECENT FINDINGS: Valvular pulmonary stenosis is mostly congenital and pulmonary regurgitation is usually an acquired pulmonary valve disease. Combined pulmonary stenosis and pulmonary regurgitation as sequel to previous surgeries for congenital heart diseases is the most common form of pulmonary valve disease in the adults...
July 3, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28674617/an-ffrct-diagnostic-strategy-versus-usual-care-in-patients-with-suspected-coronary-artery-disease-planned-for-invasive-coronary-angiography-at-german-sites-one-year-results-of-a-subgroup-analysis-of-the-platform-prospective-longitudinal-trial-of-ffrct-outcome
#15
Roisin Colleran, Pamela S Douglas, Martin Hadamitzky, Matthias Gutberlet, Lukas Lehmkuhl, Borek Foldyna, Michael Woinke, Ulrich Hink, Jonathan Nadjiri, Alan Wilk, Furong Wang, Gianluca Pontone, Mark A Hlatky, Campbell Rogers, Robert A Byrne
AIM: Diagnostic evaluation practices for suspected coronary artery disease (CAD) may vary between countries. Our objective was to compare a CT-derived fractional flow reserve (FFRCT) diagnostic strategy with usual care in patients with planned invasive coronary angiography (ICA) enrolled in the PLATFORM (Prospective Longitudinal Trial of FFRCT: Outcome and Resource Impacts) study at German sites. METHODS: Patients were divided into two consecutive observational cohorts, receiving either usual care or CT angiography (CTA)/FFRCT...
2017: Open Heart
https://www.readbyqxmd.com/read/28674321/incremental-prognostic-value-of-coronary-computed-tomography-angiography-high-risk-plaque-characteristics-in-asymptomatic-patients
#16
Kazuhisa Takamura, Shinichiro Fujimoto, Takeshi Kondo, Makoto Hiki, Yuko Kawaguchi, Etsuro Kato, Hiroyuki Daida
AIM: Coronary computed tomography angiography (CCTA) findings of positive remodeling (index >1.1) and low-attenuation plaque (<30 Hounsfield units) are recognized as CT-verified high-risk plaque (CT-HRP). Therefore, we investigated the incremental prognostic value of evaluation of plaque characteristics using CCTA in asymptomatic patients. METHODS: Overall, 495 consecutive patients without any known coronary artery disease who underwent CCTA were included in this study...
July 1, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28672916/diagnostic-accuracy-of-coronary-ct-angiography-combined-with-dual-energy-myocardial-perfusion-imaging-for-detection-of-myocardial-infarction
#17
Ruijuan Han, Kai Sun, Bin Lu, Ruiping Zhao, Kuncheng Li, Xinchun Yang
The aim of the present study was to evaluate the diagnostic accuracy of second generation dual-energy computed tomography (DECT) myocardial perfusion imaging for the detection of myocardial infarction (MI) in patients with suspected MI. In total, 56 patients underwent DECT. Among those, 40 patients had MI that was detected by catheter coronary angiography and cardiac troponin I elevation and evolution of acute MI detected by electrocardiogram changes. The diagnostic accuracy, including the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for the detection of MI were evaluated, as well as the coronary image quality of coronary artery and radiation dose...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28670161/left-ventricular-functional-parameters-and-geometric-patterns-in-korean-adults-on-coronary-ct-angiography-with-a-320-detector-row-ct-scanner
#18
Eun-Ju Kang, Ki-Nam Lee, Won Jin Choi, Young-Dae Kim, Kyung Min Shin, Jae-Kwang Lim, Jongmin Lee
OBJECTIVE: To assess the normal reference values of left ventricle (LV) functional parameters in Korean adults on coronary CT angiography (CCTA) with a 320-detector-row CT scanner, and to analyze sex-related differences and correlations with various clinical characteristics. MATERIALS AND METHODS: This study retrospectively enrolled 172 subjects (107 men and 65 women; age, 58 ± 10.9 years; body surface area [BSA], 1.75 ± 0.2 m(2)) who underwent CCTA without any prior history of cardiac disease...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670160/assessment-of-myocardial-bridge-by-cardiac-ct-intracoronary-transluminal-attenuation-gradient-derived-from-diastolic-phase-predicts-systolic-compression
#19
Mengmeng Yu, Yang Zhang, Yuehua Li, Minghua Li, Wenbin Li, Jiayin Zhang
OBJECTIVE: To study the predictive value of transluminal attenuation gradient (TAG) derived from diastolic phase of coronary computed tomography angiography (CCTA) for identifying systolic compression of myocardial bridge (MB). MATERIALS AND METHODS: Consecutive patients diagnosed with MB based on CCTA findings and without obstructive coronary artery disease were retrospectively enrolled. In total, 143 patients with 144 MBs were included in the study. Patients were classified into three groups: without systolic compression, with systolic compression < 50%, and with systolic compression ≥ 50%...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28668419/dose-reduction-techniques-in-coronary-calcium-scoring-the-effect-of-iterative-reconstruction-combined-with-low-tube-voltage-on-calcium-scores-in-a-thoracic-phantom
#20
Marleen Vonder, Gert Jan Pelgrim, Mathias Meyer, Thomas Henzler, Matthijs Oudkerk, Rozemarijn Vliegenthart
OBJECTIVES: To define a dose-reduced coronary calcium CT protocol that provides similar calcium score values as a conventional 120kVp protocol. METHODS: A thorax phantom containing 100 calcifications was scanned with the reference protocol (120kVp, 90 ref mAs, FBP) and 30 dose-reduced protocols (70-110kVp, 90 ref mAs, FBP and iterative reconstruction (IR) levels 1-5) with 3rd generation dual-source CT. For protocols that yielded similar detectability and calcium scores as the reference protocol, additional scans were acquired at reduced ref mAs...
August 2017: European Journal of Radiology
keyword
keyword
98264
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"