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Cardiac computed tomography angiography

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https://www.readbyqxmd.com/read/28329376/comparison-of-the-prognostic-value-of-negative-non-invasive-cardiac-investigations-in-patients-with-suspected-or-known-coronary-artery-disease-a-meta-analysis
#1
Martijn W Smulders, Caroline Jaarsma, Patricia J Nelemans, Sebastiaan C A M Bekkers, Jan Bucerius, Tim Leiner, Harry J G M Crijns, Joachim E Wildberger, Simon Schalla
Aims: To compare the prognostic value of negative non-invasive cardiac investigations (coronary computed tomographic angiography [CCTA], cardiovascular magnetic resonance [CMR], exercise electrocardiographic testing [EET], positron emission tomography [PET], stress-echocardiography [SE], and single-photon emission tomography [SPECT]) in patients with suspected or known coronary artery disease (CAD) and to explore the effect of adjustment for population event risk and presence of CAD. Methods and results: MEDLINE/PubMed database, EMBASE and Cochrane Library were searched from January-1990 to April-2015 for studies reporting annual event rates (AER) of myocardial infarction (MI) and cardiac death...
February 27, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329198/long-term-serial-non-invasive-multislice-computed-tomography-angiography-with-functional-evaluation-after-coronary-implantation-of-a-bioresorbable-everolimus-eluting-scaffold-the-absorb-cohort-b-msct-substudy
#2
Yoshinobu Onuma, Carlos Collet, Robert-Jan van Geuns, Bernard de Bruyne, Evald Christiansen, Jacques Koolen, Pieter Smits, Bernard Chevalier, Dougal McClean, Dariusz Dudek, Stephan Windecker, Ian Meredith, Koen Nieman, Susan Veldhof, John Ormiston, Patrick W Serruys
Aims: Multimodality invasive imaging of the first-in-man cohort demonstrated at 5 years stable lumen dimensions and a low rate of major adverse cardiac events (MACE). However, the long-term non-invasive assessment of this device remains to be documented. The objective was to describe the 72-month multislice computed tomography (MSCT) angiographic and functional findings after the implantation of the second iteration of the fully resorbable everolimus-eluting polymeric scaffold. Methods and results: In the ABSORB Cohort B trial patients with non-complex de novo lesions were treated with second iteration bioresobable vascular scaffold (BVS)...
March 16, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329166/outcome-in-middle-aged-individuals-with-anomalous-origin-of-the-coronary-artery-from-the-opposite-sinus-a-matched-cohort-study
#3
Christoph Gräni, Dominik C Benz, Dominik A Steffen, Olivier F Clerc, Christian Schmied, Mathias Possner, Jan Vontobel, Fran Mikulicic, Cathérine Gebhard, Aju P Pazhenkottil, Oliver Gaemperli, Shelley Hurwitz, Philipp A Kaufmann, Ronny R Buechel
Aims: Anomalous origin of a coronary artery from the opposite sinus (ACAOS) has been associated with adverse cardiac events in the young. It remains unknown whether this holds true for middle-aged patients with uncorrected ACAOS as well. We assessed the outcome in middle-aged patients with newly diagnosed ACAOS by coronary computed tomography angiography (CCTA) compared with a matched cohort. Methods and results: We retrospectively identified 68 consecutive patients with ACAOS documented by CCTA...
March 16, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28321775/presence-and-extent-of-cardiac-computed-tomography-angiography-defined-coronary-artery-disease-in-patients-presenting-with-syncope
#4
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/28296294/electrocardiogram-gated-coronary-ct-angiography-dose-estimates-using-impact
#5
Masanao Kobayashi, Yasuki Asada, Kosuke Matsubara, Shouichi Suzuki, Kichiro Koshida, Yuta Matsunaga, Tomonobu Haba, Ai Kawaguchi, Hiroshi Toyama, Ryoichi Kato
The primary study objective was to assess radiation doses using a modified form of the Imaging Performance Assessment of Computed Tomography (CT) scanner (ImPACT) patient dosimetry for cardiac applications on an Aquilion ONE ViSION Edition scanner, including the Ca score, target computed tomography angiography (CTA), prospective CTA, continuous CTA/cardiac function analysis (CFA), and CTA/CFA modulation. Accordingly, we clarified the CT dose index (CTDI) to determine the relationship between heart rate (HR) and X-ray exposure...
July 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28293003/-surgical-repair-of-coronary-pulmonary-artery-fistulae-with-giant-coronary-aneurysm
#6
Naoki Hashiyama, Yusuke Katayama, Makoto Mo, Munetaka Masuda
A 69-year-old woman was referred to our hospital due to dyspnea on exertion and a heart murmur. A chest X-ray showed a bulge at the left 3rd arch and chest computed tomography( CT) revealed a giant mass adjacent to the right ventricular outflow. Multidetector-row CT and coronary angiography showed a giant coronary aneurysm (55×45 mm) and fistulae arising from the left main coronary trunk and entering into the main pulmonary artery (PA). The pulmonary to systemic flow ratio was 1.84. She was diagnosed with coronary-pulmonary artery fistulae with giant coronary aneurysm...
March 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28292858/predictive-value-of-age-and-sex-specific-nomograms-of-global-plaque-burden-on-coronary-computed-tomography-angiography-for-major-cardiac-events
#7
Christopher Naoum, Daniel S Berman, Amir Ahmadi, Philipp Blanke, Heidi Gransar, Jagat Narula, Leslee J Shaw, Leonard Kritharides, Stephan Achenbach, Mouaz H Al-Mallah, Daniele Andreini, Matthew J Budoff, Filippo Cademartiri, Tracy Q Callister, Hyuk-Jae Chang, Kavitha Chinnaiyan, Benjamin Chow, Ricardo C Cury, Augustin DeLago, Allison Dunning, Gudrun Feuchtner, Martin Hadamitzky, Joerg Hausleiter, Philipp A Kaufmann, Yong-Jin Kim, Erica Maffei, Hugo Marquez, Gianluca Pontone, Gilbert Raff, Ronen Rubinshtein, Todd C Villines, James Min, Jonathon Leipsic
BACKGROUND: Age-adjusted coronary artery disease (CAD) burden identified on coronary computed tomography angiography predicts major adverse cardiovascular event (MACE) risk; however, it seldom contributes to clinical decision making because of a lack of nomographic data. We aimed to develop clinically pragmatic age- and sex-specific nomograms of CAD burden using coronary computed tomography angiography and to validate their prognostic use. METHODS AND RESULTS: Patients prospectively enrolled in phase I of the CONFIRM registry (Coronary CT Angiography Evaluation for Clinical Outcomes) were included (derivation cohort: n=21,132; 46% female) to develop CAD nomograms based on age-sex percentiles of segment involvement score (SIS) at each year of life (40-79 years)...
March 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28290782/prognostic-value-of-combined-ct-angiography-and-myocardial-perfusion-imaging-versus-invasive-coronary-angiography-and-nuclear-stress-perfusion-imaging-in-the-prediction-of-major-adverse-cardiovascular-events-the-core320-multicenter-study
#8
Marcus Y Chen, Carlos E Rochitte, Armin Arbab-Zadeh, Marc Dewey, Richard T George, Julie M Miller, Hiroyuki Niinuma, Kunihiro Yoshioka, Kakuya Kitagawa, Hajime Sakuma, Roger Laham, Andrea L Vavere, Rodrigo J Cerci, Vishal C Mehra, Cesar Nomura, Klaus F Kofoed, Masahiro Jinzaki, Sachio Kuribayashi, Arthur J Scholte, Michael Laule, Swee Yaw Tan, John Hoe, Narinder Paul, Frank J Rybicki, Jeffrey A Brinker, Andrew E Arai, Matthew B Matheson, Christopher Cox, Melvin E Clouse, Marcelo F Di Carli, João A C Lima
Purpose To compare the prognostic importance (time to major adverse cardiovascular event [MACE]) of combined computed tomography (CT) angiography and CT myocardial stress perfusion imaging with that of combined invasive coronary angiography (ICA) and stress single photon emission CT myocardial perfusion imaging. Materials and Methods This study was approved by all institutional review boards, and written informed consent was obtained. Between November 2009 and July 2011, 381 participants clinically referred for ICA and aged 45-85 years were enrolled in the Combined Noninvasive Coronary Angiography and Myocardial Perfusion Imaging Using 320-Detector Row Computed Tomography (CORE320) prospective multicenter diagnostic study...
March 14, 2017: Radiology
https://www.readbyqxmd.com/read/28279544/inferior-vena-cava-filter-limb-fracture-with-embolization-to-the-right-ventricle
#9
Bradley S Jackson, Mykel Sepula, Jared T Marx, Chad M Cannon
BACKGROUND: Inferior vena cava (IVC) filter and filter limb embolization is a known phenomenon, with a prevalence of up to 25% for certain filter types. Most commonly, the site of embolization is to the heart. Point-of-care ultrasound is an easily accessible imaging modality that should be utilized when considering IVC filter complications. CASE REPORT: A 28-year-old woman with a history of metastatic sarcoma and IVC filter placement for deep venous thrombosis presented to the Emergency Department (ED) for chest pain...
March 6, 2017: Journal of Emergency Medicine
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
#10
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/28279382/trials-of-imaging-use-in-the-emergency-department-for-acute-chest-pain
#11
REVIEW
Gilbert L Raff, Udo Hoffmann, James E Udelson
Over 8 million patients seek emergency department care for acute chest pain annually in the United States alone, and <5% have an acute coronary syndrome. In the absence of overt electrocardiographic or biomarker evidence, expensive and time-consuming diagnostic strategies are frequently required. Beginning in 2000, radionuclide myocardial perfusion, stress echocardiography, cardiac magnetic resonance imaging, and coronary computed tomographic angiography have become increasingly common in evaluating these patients...
March 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28279378/primary-prevention-of-cvd-the-role-of-imaging-trials
#12
REVIEW
Alan Rozanski, Joseph B Muhlestein, Daniel S Berman
The optimal approach for screening for cardiovascular disease remains controversial. A new standard of "therapeutic efficacy" requires that screening tests which involve cardiac imaging not only predict events but also improve clinical outcomes compared with usual care. To date, 5 prospective randomized trials have been conducted to compare outcomes based on imaging-guided screening and prevention versus assignment to usual care in screening populations. One trial involved cardiac stress imaging, 3 involved coronary artery calcium scanning, and 1 involved coronary computed tomography angiography...
March 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28279312/the-role-of-post-resuscitation-electrocardiogram%C3%A2-in-patients-with%C3%A2-st-segment%C3%A2-changes-in-the-immediate%C3%A2-post-cardiac-arrest-period
#13
Youn-Jung Kim, Sun-Yang Min, Dong Hun Lee, Byung Kook Lee, Kyung Woon Jeung, Hui Jai Lee, Jonghwan Shin, Byuk Sung Ko, Shin Ahn, Gi-Byoung Nam, Kyoung Soo Lim, Won Young Kim
OBJECTIVES: The authors aimed to evaluate the role of post-resuscitation electrocardiogram (ECG) in patients showing significant ST-segment changes on the initial ECG and to provide useful diagnostic indicators for physicians to determine in which out-of-hospital cardiac arrest (OHCA) patients brain computed tomography (CT) should be performed before emergency coronary angiography. BACKGROUND: The usefulness of immediate brain CT and ECG for all resuscitated patients with nontraumatic OHCA remains controversial...
March 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28276071/cfd-and-bernoulli-based-pressure-drop-estimates-a-comparison-using-patient-anatomies-from-heart-and-aortic-valve-segmentation-of-ct-images
#14
Jürgen Weese, Angela Lungu, Jochen Peters, Frank M Weber, Irina Waechter-Stehle, D Rodney Hose
PURPOSE: An aortic valve stenosis is an abnormal narrowing of the aortic valve (AV). It impedes blood flow and is often quantified by the geometric orifice area of the AV (AVA) and the pressure drop (PD). Using the Bernoulli equation, a relation between the PD and the effective orifice area (EOA) represented by the area of the vena contracta (VC) downstream of the AV can be derived. We investigate the relation between the AVA and the EOA using patient anatomies derived from cardiac computed tomography (CT) angiography images and computational fluid dynamic (CFD) simulations...
March 9, 2017: Medical Physics
https://www.readbyqxmd.com/read/28275422/concomitant-left-atrial-myxoma-and-patent-foramen-ovale-is-it-an-evolutional-synergy-for-a-cerebrovascular-event
#15
Glenmore Lasam, Roberto Ramirez
We report a case of a 48-year-old female who presented initially with an abrupt onset of left facial and hand numbness after her routine yoga with no associated syncope, palpitation, chest pain or dyspnea. She consulted her primary care physician and recommended hospital care for possible stroke. On the day of admission, she complained of left facial and hand hemiparesthesia. Cranial imaging and angiography were unremarkable but echocardiography and cardiac computed tomography revealed left atrial mass. She underwent resection of the left atrial mass with an incidental finding of patent foramen ovale intraoperatively...
February 2017: Cardiology Research
https://www.readbyqxmd.com/read/28275420/non-cardiovascular-computed-tomography-incidental-findings-in-patients-who-underwent-transaortic-valve-implantation-procedure
#16
Ahmed Fathala, Mnahi Bin Saeedan, Ali Zulfiqar, Hani Al Sergani
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is a new treatment option for patients with severe aortic stenosis. Pre-TAVI procedure workup includes computed tomography angiography (CTA) of the heart and aorta from aortic annulus to the iliofemoral arteries. Frequently, there are a number of incidental non-cardiac findings (INCFs) in pre-TAVI CTA. However, the frequency and clinical significance of these INCFs are unknown. The aim of our study was to investigate the prevalence of INCFs and their clinical significance...
February 2017: Cardiology Research
https://www.readbyqxmd.com/read/28266929/fully-automatic-multi-atlas-segmentation-of-cta-for-partial-volume-correction-in-cardiac-spect-ct
#17
Qingyi Liu, Hassan Mohy-Ud-Din, Nabil Boutagy, Mingyan Jiang, Silin Ren, John Stendahl, Albert Sinusas, Chi Liu
Anatomical-based partial volume correction (PVC) has been shown to improve image quality and quantitative accuracy in cardiac SPECT/CT. However, this method requires manual segmentation of various organs from contrast-enhanced computed tomography angiography (CTA) data. In order to achieve fully automatic CTA segmentation for clinical translation, we investigated the most common multi-atlas segmentation methods. We also modified the multi-atlas segmentation method by introducing a novel label fusion algorithm for multiple organ segmentation to eliminate overlap and gap voxels...
March 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28259226/prevalence-and-prognosis-of-nonobstructive-coronary-artery-disease-in-patients-undergoing-coronary-angiography-or-coronary-computed-tomography-angiography-a-meta-analysis
#18
Zhi Jian Wang, Lin Lin Zhang, Sammy Elmariah, Hong Ya Han, Yu Jie Zhou
OBJECTIVE: To evaluate the prevalence, clinical characteristics, and risk of cardiac events in patients with nonobstructive coronary artery disease (CAD). PATIENTS AND METHODS: We searched PubMed, EMBASE, and the Cochrane Library from January 1, 1990, to November 31, 2015. Studies were included if they reported prevalence or prognosis of patients with nonobstructive CAD (≤50% stenosis) among patients with known or suspected CAD. Patients with nonobstructive CAD were further grouped as those with no angiographic CAD (0% or ≤20%) and those with mild CAD (>0% or >20% to ≤50%)...
March 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28255235/high-coronary-calcium-score-and-post-procedural-ck-mb-are-noninvasive-predictors-of-coronary-stent-restenosis
#19
Jae-Beom Lee, Yun-Seok Choi, Woo-Baek Chung, Ami Kwon, Chul-Soo Park, Man-Young Lee
PURPOSE: High coronary calcium score (CCS) and post-procedural cardiac enzyme may be related with poor outcomes in patients with coronary stent implantation. METHODS: A total of 1,072 patients (63.2% male, mean age: 61.7±10.3 years) who underwent coronary multi-detect computed tomography at index procedure and follow-up coronary angiography (CAG) after drug-eluting stent (DES) were divided into two groups: those with and without target lesion revascularization (TLR; >50% reduction in luminal stent diameter or angina symptoms on follow-up CAG)...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28248196/automatic-segmentation-and-quantification-of-the-cardiac-structures-from-non-contrast-enhanced-cardiac-ct-scans
#20
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
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