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Coronary cardiac computed tomography

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https://www.readbyqxmd.com/read/28449466/higher-coronary-artery-calcification-score-is-associated-with-adverse-prognosis-in-patients-with-stable-angina-pectoris
#1
Renrong Wang, Xiaoxiao Liu, Chunxia Wang, Xinhe Ye, Xin Xu, Chengjian Yang
BACKGROUND: Coronary artery calcification (CAC) indicates the presence of atherosclerotic lesions and serves as a marker of prognosis in patients with coronary artery disease (CAD). This study evaluated the value of the CAC score for determining the prognosis of patients with stable angina pectoris (SAP). METHODS: A total of 106 consecutive patients with SAP were enrolled in this study from January 2011 to June 2014; from these patients, 640 multi-slice computer tomography (MSCT) samples were used to obtain CAC scores...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28446942/cardiac-ct-improves-outcomes-in-stable-coronary-heart-disease-results-of-recent-clinical-trials
#2
REVIEW
Michelle C Williams, Alastair Moss, Edward Nicol, David E Newby
PURPOSE OF REVIEW: The purpose of this study was to review the recent randomised controlled trials of coronary computed tomography angiography (CCTA) for patients with stable coronary artery disease. RECENT FINDINGS: The initial results and subsequent papers from the SCOT-HEART (Scottish COmputed Tomography of the HEART) and PROMISE (PROspective Multicentre Imaging Study for Evaluation of chest pain) trials have shown that CCTA is a safe and appropriate addition to standard care or alternative to functional testing...
2017: Current Cardiovascular Imaging Reports
https://www.readbyqxmd.com/read/28439736/early-cardiac-perfusion-defects-after-left-sided-radiation-therapy-for-breast-cancer-is-there-a-volume-response
#3
REVIEW
Orit Kaidar-Person, Timothy M Zagar, Jorge Daniel Oldan, Jason Matney, Ellen L Jones, Shiva Das, Brian C Jensen, Richard C Zellars, Terence Z Wong, Lawrence B Marks
PURPOSE: Cardiac single-photon emission computed tomography (SPECT) is often used to identify defects in myocardial perfusion due to atherosclerotic coronary artery disease. It was also used in studies to evaluate radiation therapy (RT)-associated cardiac abnormalities. In the current review, we aim to evaluate the rates of post-RT cardiac SPECT early perfusion abnormalities and relate this to the irradiated left ventricular volume. METHODS: The studies cited in this systematic review were identified using the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines...
April 21, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28437443/relative-predictive-value-of-lung-cancer-screening-ct-versus-myocardial-perfusion-attenuation-correction-ct-in-the-evaluation-of-coronary-calcium
#4
Grant Bailey, Abigail Healy, Bryan D Young, Esseim Sharma, Judith Meadows, Hyung J Chun, Wen-Chih Wu, Gaurav Choudhary, Alan R Morrison
Coronary artery calcium scores (CACS) from lung cancer screening computed tomography (LCSCT) or myocardial perfusion attenuation correction computed tomography (ACCT) are not routinely performed or reported. CACS from LCSCT and ACCT have not been directly compared in the same patient population. We identified 66 patients who underwent both LCSCT (non-gated) and ECG-gated cardiac CT (CCT) within a 2-year span. Of this population, 40 subjects had also undergone ACCT. Using the Agatston method, CACS for 264 individual vessels from the LCSCT population and for 160 vessels from ACCT population were calculated and evaluated for agreement with ECG-gated CCT as the gold standard...
2017: PloS One
https://www.readbyqxmd.com/read/28432820/the-impact-of-small-motion-on-the-visualization-of-coronary-vessels-and-lesions-in-cardiac-ct-a-simulation-study
#5
Francisco Contijoch, J Webster Stayman, Elliot R McVeigh
PURPOSE: Coronary x-ray computed tomography angiography (CCTA) is used to non-invasively assess coronary artery geometry and has, combined with computational modeling, demonstrated the potential to identify physiologically significant lesions. These measurements require robust and accurate coronary imaging and delineation of vessels in the presence of small motion. This simulation study characterizes the impact of small, uncorrected vessel drifts during data acquisition on the assessment of vessel intensity, diameter, and shape...
April 22, 2017: Medical Physics
https://www.readbyqxmd.com/read/28431861/cardiac-computed-tomography-derived-myocardial-mass-at-risk-using-the-voronoi-based-segmentation-algorithm-a-histological-validation-study
#6
Seiko Ide, Satoru Sumitsuji, Osamu Yamaguchi, Yasushi Sakata
BACKGROUND: Myocardial mass at risk (MMAR) is an important predictor of adverse cardiac events in patients with ischemic heart disease. This study aims to validate the accuracy of MMAR calculated from cardiac computed tomography (CCT) data using the Voronoi-based segmentation algorithm in comparison with actual MMAR measured on ex-vivo swine hearts prepared by injecting a dye into the coronary arteries. METHODS: Fifteen extracted swine hearts had India ink injected into one of the major coronary arteries...
April 18, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28430739/downstream-indication-to-revascularization-following-hybrid-cardiac-pet-mri-preliminary-results
#7
Julien Priamo, Dionysos Adamopoulos, Oliver Rager, Angela Frei, Stephane Noble, David Carballo, Osman Ratib, René Nkoulou
BACKGROUND: Hybrid PET/MRI allows the acquisition of both fluorine-18-fluorodeoxyglucose (F-FDG) PET and cardiac magnetic resonance (CMR) during one session. Whether this will result in different referral to coronary revascularization (CR) is unknown. We compared this new hybrid method with all-nuclear/all-CMR methods in the assessment of viable myocardium and in downstream referral to CR. PATIENTS AND METHODS: Overall, 12 patients with rest perfusion defects on a single photon emission computed tomography (SPECT) were recruited for cardiac viability assessment using a PET/MRI device...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28428195/progression-of-coronary-artery-calcium-and-incident-heart-failure-the-multi-ethnic-study-of-atherosclerosis
#8
Hooman Bakhshi, Bharath Ambale-Venkatesh, Xiaoying Yang, Mohammad R Ostovaneh, Colin O Wu, Matthew Budoff, Hossein Bahrami, Nathan D Wong, David A Bluemke, João A C Lima
BACKGROUND: Although the association between coronary artery calcium (CAC) and future heart failure (HF) has been shown previously, the value of CAC progression in the prediction of HF has not been investigated. In this study, we investigated the association of CAC progression with subclinical left ventricular (LV) dysfunction and incident HF in the Multi-Ethnic Study of Atherosclerosis. METHODS AND RESULTS: The Multi-Ethnic Study of Atherosclerosis is a population-based study consisting of 6814 men and women aged 45 to 84, free of overt cardiovascular disease at enrollment, who were recruited from 4 ethnicities...
April 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28413187/noninvasive-fractional-flow-reserve-derived-from-coronary-computed-tomography-angiography%C3%A3-is-this-just-another-new-diagnostic-test-or-the-long-awaited-game-changer
#9
Hiromasa Otake, Charles A Taylor, Hitoshi Matsuo, Nobuhiro Tanaka, Takashi Akasaka
Despite the clinical importance of ischemia evaluation, obtaining fractional flow reserve (FFR) value has, heretofore, only been available during invasive cardiac catheterization. Although there is a clear linkage between morphology and physiology, a significant gap still exists. FFR derived from coronary computed tomography angiography (FFRCT) is a novel method of quantifying the hemodynamic significance of coronary artery stenoses by translating morphological information into hemodynamic data. Improved diagnostic performance of FFRCThas been repeatedly demonstrated in comparison with coronary computed tomography angiography alone with an invasive FFR reference standard...
April 11, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28412436/noninvasive-ffr-derived-from-coronary-ct-angiography-management-and-outcomes-in-the-promise-trial
#10
Michael T Lu, Maros Ferencik, Rhonda S Roberts, Kerry L Lee, Alexander Ivanov, Elizabeth Adami, Daniel B Mark, Farouc A Jaffer, Jonathon A Leipsic, Pamela S Douglas, Udo Hoffmann
OBJECTIVES: The purpose of this study was to determine whether noninvasive fractional flow reserve derived from computed tomography (FFRCT) predicts coronary revascularization and outcomes and whether its addition improves efficiency of referral to invasive coronary angiography (ICA) after coronary computed tomography angiography (CTA). BACKGROUND: FFRCT may improve the efficiency of an anatomic CTA strategy for stable chest pain. METHODS: This observational cohort study included patients with stable chest pain in the PROMISE trial (PROspective Multicenter Imaging Study for Evaluation of Chest Pain) referred to ICA within 90 days after CTA...
April 7, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28409258/impact-of-knowledge-based-iterative-model-reconstruction-on-myocardial-late-iodine-enhancement-in-computed-tomography-and-comparison-with-cardiac-magnetic-resonance
#11
Yuki Tanabe, Teruhito Kido, Akira Kurata, Naoki Fukuyama, Takahiro Yokoi, Tomoyuki Kido, Teruyoshi Uetani, Mani Vembar, Amar Dhanantwari, Shinichi Tokuyasu, Natsumi Yamashita, Teruhito Mochizuki
We evaluated the image quality and diagnostic performance of late iodine enhancement computed tomography (LIE-CT) with knowledge-based iterative model reconstruction (IMR) for the detection of myocardial infarction (MI) in comparison with late gadolinium enhancement magnetic resonance imaging (LGE-MRI). The study investigated 35 patients who underwent a comprehensive cardiac CT protocol and LGE-MRI for the assessment of coronary artery disease. The CT protocol consisted of stress dynamic myocardial CT perfusion, coronary CT angiography (CTA) and LIE-CT using 256-slice CT...
April 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28407050/infarct-size-left-ventricular-function-and-prognosis-in-women-compared-to-men-after-primary-percutaneous-coronary-intervention-in-st-segment-elevation-myocardial-infarction-results-from-an-individual-patient-level-pooled-analysis-of-10-randomized-trials
#12
Ioanna Kosmidou, Björn Redfors, Harry P Selker, Holger Thiele, Manesh R Patel, James E Udelson, E Magnus Ohman, Ingo Eitel, Christopher B Granger, Akiko Maehara, Ajay Kirtane, Philippe Généreux, Paul L Jenkins, Ori Ben-Yehuda, Gary S Mintz, Gregg W Stone
Aim: Studies have reported less favourable outcomes in women compared with men after primary percutaneous coronary intervention (PCI) in ST-segment elevation myocardial infarction (STEMI). Whether sex-specific differences in the magnitude or prognostic impact of infarct size or post-infarction cardiac function explain this finding is unknown. Methods and results: We pooled patient-level data from 10 randomized primary PCI trials in which infarct size was measured within 1 month (median 4 days) by either cardiac magnetic resonance imaging or technetium-99m sestamibi single-photon emission computed tomography...
April 12, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28403869/debulking-surgery-for-venous-hemangioma-arising-from-the-epicardium-report-of-a-case
#13
Daichi Shikata, Takahiro Nakagomi, Yujiro Yokoyama, Yukiko Yamada, Masato Nakajima, Toshio Oyama, Taichiro Goto
BACKGROUND: Cardiac hemangiomas are rare benign vascular tumors that can occur in any cardiac layer: endocardium, myocardium, or epicardium. Histologically, cardiac hemangiomas may be classified as capillary, cavernous, or arteriovenous; venous hemangiomas are extremely rare. CASE PRESENTATION: A 46-year-old man reported experiencing precordial discomfort. Computed tomography revealed a massive tumor adjacent to the right ventricle. The right coronary artery was found to be located at the center of the tumor...
April 12, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28397961/the-association-between-wedging-of-the-aorta-and-cardiac-structural-anatomy-as-revealed-using-multidetector-row-computed-tomography
#14
Shumpei Mori, Robert H Anderson, Tomofumi Takaya, Takayoshi Toba, Tatsuro Ito, Sei Fujiwara, Yoshiaki Watanabe, Tatsuya Nishii, Atsushi K Kono, Ken-Ichi Hirata
The aortic root is wedged within the cardiac base. The precise extent of aortic wedging, however, and its influence on the surrounding cardiac structures, has not been systematically investigated. We analysed 100 consecutive patients, who underwent coronary arterial computed tomographic angiography. We assessed the extent of aortic wedging by measuring the vertical distance between the non-adjacent aortic sinus and the inferior epicardium. A shorter distance indicates deeper aortic wedging. We assessed the tilt angle and diameter of the ascending aorta, the relative heights of the left atrial roof and the oval fossa, the shape of the proximal right coronary artery, the angle of the aorta relative to the left ventricular axis, and the lung volume...
April 11, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28396082/pregnancy-related-spontaneous-coronary-artery-dissection-a%C3%A2-case-series-and-literature-review
#15
Emily Rose, Maheedhar Gedela, Nathan Miller, Paul L Carpenter
BACKGROUND: Cardiac emergencies during pregnancy are rare but have significant associated morbidity and mortality when they do occur. The emergency physician must not only be aware of potentially life-threatening conditions in the pregnant woman, but also know the emergent management and treatment of these conditions to avoid worsening of the underlying condition. Pregnancy-related spontaneous coronary artery dissection has been described in the cardiology literature, but is not well-known in emergency medicine literature...
April 7, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28394873/effects-of-percutaneous-coronary-intervention-on-viable-myocardium-and-heart-function-of-diabetic-patients-with-chronic-total-occlusion
#16
Guowei Zhou, Wenyi Yang, Liang Li
OBJECTIVE: The aim of this study was to compare the effects of percutaneous coronary intervention (PCI) on coronary chronic total occlusion patients with (DM) or without (NDM) diabetes mellitus. METHODS: A total of 78 patients were divided into DM group and NDM group according to whether the patient has DM. The results of PCI were analyzed using quantitative coronary analysis. In addition, all the patients underwent Tc-MIBI (methoxyisobutylisonitrile) single-photon emission computed tomography (SPECT) and ultrasonic cardiogram in the first week and the sixth month after PCI to evaluate PCI results...
April 7, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28394783/cardiac-computed-tomography-for-planning-revascularization-procedures
#17
Maksymilian P Opolski
Coronary computed tomography angiography (coronary CTA) is being increasingly used to detect and rule out coronary artery stenoses. Beyond stenosis detection, the abundance of anatomic, morphologic, and physiological information incorporated from a single one-stop-shop CT study has generated considerable interest in the context of preprocedural planning for coronary revascularization. Specifically, preprocedural CTA data sets can assist interventional cardiologists with selective catheter placement, appropriate guidewire choice, accurate stent size selection, and, most importantly, development of a stepwise revascularization strategy plan...
April 7, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28390673/diagnostic-performance-of-256-row-detector-coronary-ct-angiography-in-patients-with-high-heart-rates-within-a-single-cardiac-cycle-a%C3%A2-preliminary-study
#18
J Liang, H Wang, L Xu, L Yang, L Dong, Z Fan, R Wang, Z Sun
AIM: To evaluate the image quality and diagnostic performance of coronary computed tomography angiography (CCTA) in patients with high heart rate within a single cardiac cycle using a 256-row detector CT system. MATERIALS AND METHODS: Eighty-four consecutive symptomatic patients (mean age 60.4±9.1 years, 52 men) with suspected coronary artery disease and heart rate ≥75 beats/min undergoing CCTA and invasive coronary angiography (ICA) were enrolled retrospectively...
April 5, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28385304/functional-testing-or-coronary-computed-tomography-angiography-in-patients-with-stable%C3%A2-coronary-artery-disease
#19
Mads E Jørgensen, Charlotte Andersson, Bjarne L Nørgaard, Jawdat Abdulla, Jacqueline B Shreibati, Christian Torp-Pedersen, Gunnar H Gislason, Richard E Shaw, Mark A Hlatky
BACKGROUND: The choice of either anatomical or functional noninvasive testing to evaluate suspected coronary artery disease might affect subsequent clinical management and outcomes. OBJECTIVES: This study analyzed the association of initial noninvasive cardiac testing in outpatients with stable symptoms, with subsequent use of medications, invasive procedures, and clinical outcomes. METHODS: We studied patients enrolled in a Danish nationwide register who underwent initial noninvasive cardiac testing with either coronary computed tomography angiography (CTA) or functional testing (exercise electrocardiography or nuclear stress testing) from 2009 to 2015...
April 11, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28381282/coronary-sinus-aneurysm-associated-with-multiple-venous-anomalies
#20
Guang Song, Ming Du, Weidong Ren, Ke Zhou, Lu Sun
BACKGROUND: Congenital anomalies of the venous system are rare, involve the inferior vena cava (IVC), a persistent left superior vena cava (PLSVC), and the left hepatic vein (LHV), and can make cardiac diagnostic and therapeutic procedures difficult. CASE PRESENTATION: We present a 67-year-old woman without heterotaxy syndrome associated with interruption of the left IVC that continued with the hemiazygos vein system, a PLSVC, and an anomalous LHV draining the into coronary sinus (CS)...
April 5, 2017: BMC Cardiovascular Disorders
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