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Computed coronary angiography

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https://www.readbyqxmd.com/read/29352380/integrated-prediction-of-lesion-specific-ischaemia-from-quantitative-coronary-ct-angiography-using-machine-learning-a-multicentre-study
#1
Damini Dey, Sara Gaur, Kristian A Ovrehus, Piotr J Slomka, Julian Betancur, Markus Goeller, Michaela M Hell, Heidi Gransar, Daniel S Berman, Stephan Achenbach, Hans Erik Botker, Jesper Moller Jensen, Jens Flensted Lassen, Bjarne Linde Norgaard
OBJECTIVES: We aimed to investigate if lesion-specific ischaemia by invasive fractional flow reserve (FFR) can be predicted by an integrated machine learning (ML) ischaemia risk score from quantitative plaque measures from coronary computed tomography angiography (CTA). METHODS: In a multicentre trial of 254 patients, CTA and invasive coronary angiography were performed, with FFR in 484 vessels. CTA data sets were analysed by semi-automated software to quantify stenosis and non-calcified (NCP), low-density NCP (LD-NCP, < 30 HU), calcified and total plaque volumes, contrast density difference (CDD, maximum difference in luminal attenuation per unit area) and plaque length...
January 19, 2018: European Radiology
https://www.readbyqxmd.com/read/29350389/three-dimensional-visualization-of-coronary-sinus-ostium-from-the-inside-right-atrium-perspective
#2
Rafał Młynarski, Agnieszka Młynarska, Krzysztof S Gołba, Maciej Sosnowski
BACKGROUND: There is no in vivo method of coronary sinus visualization from the right atrium perspective. The objective of the study was to create a cardiac computed tomography angiography (CT) - based method of visualizing the coronary sinus ostium and the Thebesian valve from the inside right atrium perspective. METHODS: In 78 consecutive patients, a cardiac CT angiography (Aquilion 64, Toshiba) with retrospective gating (slice 0.5mm) was performed. Raw data were reconstructed on Vitrea 2 workstations (Vital Images)...
January 19, 2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29350374/extension-of-a-coronary-intramural-hematoma-after-blunt-chest-trauma
#3
Maeng Real Park, Mun Ki Min, Ji Ho Ryu, Dae Sub Lee, Kang Ho Lee
Coronary artery dissection and intramural hematoma after blunt chest trauma are rare, but life-threatening, complications. Coronary intramural hematoma extension is even rarer. A 31-year-old man was transferred to our hospital for worsening left chest pain during while he was admitted at a nearby hospital due to blunt chest trauma. Bedside echocardiography showed akinesis of the left ventricular apex and anterior wall as well as hypokinesis of the mid-to-basal anteroseptal wall and mid-to-basal lateral and posterior walls of the left ventricle...
January 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29349698/third-generation-dual-source-ct-enables-accurate-diagnosis-of-coronary-restenosis-in-all-size-stents-with-low-radiation-dose-and-preserved-image-quality
#4
Yuehua Li, Mengmeng Yu, Wenbin Li, Zhigang Lu, Meng Wei, Jiayin Zhang
OBJECTIVES: To investigate the diagnostic performance of low dose stent imaging in patients with large (≥ 3 mm) and small (< 3 mm) calibre stents by third-generation dual-source CT. METHODS: Symptomatic patients suspected of having in-stent restenosis (ISR) were prospectively enrolled. Coronary computed tomography angiography (CCTA) and invasive coronary angiography (ICA) were performed within 1 month for correlation. Binary ISR was defined as an in-stent neointimal proliferation with diameter stenosis ≥ 50%...
January 18, 2018: European Radiology
https://www.readbyqxmd.com/read/29348193/heartbeat-computed-tomographic-coronary-angiography-in-patients-with-possible-angina
#5
Catherine M Otto
No abstract text is available yet for this article.
February 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29346192/image-quality-overall-evaluability-and-effective-radiation-dose-of-coronary-computed-tomography-angiography-with-prospective-electrocardiographic-triggering-plus-intracycle-motion-correction-algorithm-in-patients-with-a-heart-rate-over-65-beats-per-minute
#6
Gianluca Pontone, Giuseppe Muscogiuri, Andrea Baggiano, Daniele Andreini, Andrea I Guaricci, Marco Guglielmo, Fabio Fazzari, Saima Mushtaq, Edoardo Conte, Andrea Annoni, Alberto Formenti, Elisabetta Mancini, Massimo Verdecchia, Laura Fusini, Lorenzo Bonfanti, Elisa Consiglio, Mark G Rabbat, Antonio L Bartorelli, Mauro Pepi
PURPOSE: Recently, a new intracycle motion correction algorithm (MCA) was introduced to reduce motion artifacts from heart rate (HR) in coronary computed tomography angiography (cCTA). The aim of the study was to evaluate the image quality, overall evaluability, and effective radiation dose (ED) of cCTA with prospective electrocardiographic (ECG) triggering plus MCA as compared with standard protocol with retrospective ECG triggering in patients with HR≥65 bpm. MATERIALS AND METHODS: One hundred consecutive patients (67±10 y) scheduled for cCTA with 65<HR<80 bpm were retrospectively analyzed...
January 16, 2018: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/29329818/hybrid-imaging-in-ischemic-heart-disease
#7
Andreas A Giannopoulos, Oliver Gaemperli
Hybrid imaging for ischemic heart disease refers to the fusion of information from a single or usually from multiple cardiovascular imaging modalities enabling synergistic assessment of the presence, the extent, and the severity of coronary atherosclerotic disease along with the hemodynamic significance of lesions and/or with evaluation of the myocardial function. A combination of coronary computed tomography angiography with myocardial perfusion imaging, such as single-photon emission computed tomography and positron emission tomography, has been adopted in several centers and implemented in international coronary artery disease management guidelines...
January 9, 2018: Revista Española de Cardiología
https://www.readbyqxmd.com/read/29325551/relationship-between-cardiac-microvascular-dysfunction-measured-with-82rubidium-pet-and-albuminuria-in-patients-with-diabetes-mellitus
#8
Louis Potier, Renata Chequer, Ronan Roussel, Kamel Mohammedi, Souad Sismail, Agnès Hartemann, Chloé Amouyal, Michel Marre, Dominique Le Guludec, Fabien Hyafil
BACKGROUND: Albuminuria is of one the strongest predictors of cardiovascular disease (CVD) in diabetes. Diabetes is associated with cardiac microvascular dysfunction (CMD), a powerful, independent prognostic factor for cardiac mortality. The aim of this study was to evaluate the relationship between CMD and microvascular complications in patients without known CVD. METHODS: In this monocentric study, myocardial flow reserve (MFR) was measured with cardiac 82Rubidium positron emission tomography (Rb-PET) in 311 patients referred to nuclear medicine department of Bichat University Hospital for screening of coronary artery disease from 2012 to 2014...
January 11, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29324489/comparing-methods-for-cardiac-output-intraoperatively-doppler-derived-cardiac-output-measured-with-3-dimensional-echocardiography-is-not-interchangeable-with-cardiac-output-by-pulmonary-catheter-thermodilution
#9
Karin Graeser, Mikhail Zemtsovski, Klaus F Kofoed, Matilde Winther-Jensen, Jens C Nilsson, Jesper Kjaergaard, Hasse Møller-Sørensen
BACKGROUND: Estimation of cardiac output (CO) is essential in the treatment of circulatory unstable patients. CO measured by pulmonary artery catheter thermodilution is considered the gold standard but carries a small risk of severe complications. Stroke volume and CO can be measured by transesophageal echocardiography (TEE), which is widely used during cardiac surgery. We hypothesized that Doppler-derived CO by 3-dimensional (3D) TEE would agree well with CO measured with pulmonary artery catheter thermodilution as a reference method based on accurate measurements of the cross-sectional area of the left ventricular outflow tract...
January 9, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29322177/high-risk-coronary-atherosclerotic-plaque-assessment-by-coronary-computed-tomography-angiography-should-we-use-it
#10
Raymond J Gibbons
No abstract text is available yet for this article.
January 10, 2018: JAMA Cardiology
https://www.readbyqxmd.com/read/29322167/use-of-high-risk-coronary-atherosclerotic-plaque-detection-for-risk-stratification-of-patients-with-stable-chest-pain-a-secondary-analysis-of-the-promise-randomized-clinical-trial
#11
Maros Ferencik, Thomas Mayrhofer, Daniel O Bittner, Hamed Emami, Stefan B Puchner, Michael T Lu, Nandini M Meyersohn, Alexander V Ivanov, Elizabeth C Adami, Manesh R Patel, Daniel B Mark, James E Udelson, Kerry L Lee, Pamela S Douglas, Udo Hoffmann
Importance: Coronary computed tomographic angiography (coronary CTA) can characterize coronary artery disease, including high-risk plaque. A noninvasive method of identifying high-risk plaque before major adverse cardiovascular events (MACE) could provide practice-changing optimizations in coronary artery disease care. Objective: To determine whether high-risk plaque detected by coronary CTA was associated with incident MACE independently of significant stenosis (SS) and cardiovascular risk factors...
January 10, 2018: JAMA Cardiology
https://www.readbyqxmd.com/read/29322069/method-comparison-for-cardiac-image-registration-of-coronary-computed-tomography-angiography-and-3-d-echocardiography
#12
Tim Nordenfur, Aleksandar Babic, Ivana Bulatovic, Anders Giesecke, Elif Günyeli, Jonaz Ripsweden, Eigil Samset, Reidar Winter, Matilda Larsson
Treatment decision for coronary artery disease (CAD) is based on both morphological and functional information. Image fusion of coronary computed tomography angiography (CCTA) and three-dimensional echocardiography (3DE) could combine morphology and function into a single image to facilitate diagnosis. Three semiautomatic feature-based methods for CCTA/3DE registration were implemented and applied on CAD patients. Methods were verified and compared using landmarks manually identified by a cardiologist. All methods were found feasible for CCTA/3DE fusion...
January 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29321426/percutaneous-coronary-intervention-for-a-patient-with-left-main-coronary-compression-syndrome
#13
Ryutaro Ikegami, Kazuyuki Ozaki, Takuaya Ozawa, Satoru Hirono, Masahiro Ito, Tohru Minamino
Left main coronary compression syndrome rarely occurs in patients with severe pulmonary hypertension. A 65-year-old woman with severe pulmonary hypertension due to an atrial septal defect suffered from angina on effort. Cardiac computed-tomography and coronary angiography revealed considerable stenosis of the left main coronary artery (LMA) caused by compression between the dilated main pulmonary artery trunk and the sinus of valsalva. Stenting of the LMA under intravascular ultrasound imaging was effective for the treatment of angina...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29321403/a-patient-with-a-massive-single-cardiac-metastasis-of-lung-adenocarcinoma-diagnosed-via-a-biopsy-a-case-report
#14
Takuya Oyakawa, Nao Muraoka, Kei Iida, Masatoshi Kusuhara, Tateaki Naito
A patient with a history of lung adenocarcinoma was admitted because of palpitation. Transthoracic echocardiogram revealed a mass (74×42 mm) in the right ventricle. Computed tomography showed a tumor lesion in the right ventricular cavity but no other distant metastasis. Coronary angiography revealed well-developed small branches to the tumor. After right heart catheterization, a pathological analysis of a tumor biopsy demonstrated adenocarcinoma. We diagnosed the patient with right ventricular metastasis of lung cancer...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29321389/aortic-root-calcification-score-as-an-independent-factor-for-predicting-major-adverse-cardiac-events-in-familial-hypercholesterolemia
#15
Hirofumi Okada, Hayato Tada, Kenshi Hayashi, Hiroki Kawashima, Tadanori Takata, Kenji Sakata, Atsushi Nohara, Hiroshi Mabuchi, Masakazu Yamagishi, Masa-Aki Kawashiri
AIM: The aims of this study were: 1) to determine whether the accumulation of aortic root calcification (ARC) assessed using coronary computed tomography angiography (CCTA) can predict future cardiovascular events, and 2) to estimate the onset and progression of ARC in patients with familial hypercholesterolemia (FH). METHODS: One hundred thirteen consecutive Japanese patients with heterozygous FH (male=54, mean age=52.1±15.6 years, mean LDL-C=299.0±94.6 mg/dL), without known coronary artery disease, who underwent 64-detector row CCTA were retrospectively evaluated...
January 10, 2018: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/29320864/diagnostic-performance-of-static-single-scan-stress-perfusion-cardiac-computed-tomography-in-detecting-hemodynamically-significant-coronary-artery-stenosis-a-comparison-with-combined-invasive-coronary-angiography-and-cardiovascular-magnetic-resonance-myocardial
#16
Inyoung Song, Jeong Geun Yi, Jeong Hee Park, Mi Young Kim, Je Kyoun Shin, Sung Min Ko
Background Non-invasive anatomical and physiological evaluations of coronary artery disease (CAD) may be obtained with static single-scan stress perfusion cardiac computed tomography (SSPCT). Purpose To determine the diagnostic performance of static SSPCT for identifying hemodynamically significant CAD. Material and Methods This prospective study included 29 patients with suspected or known CAD who underwent static SSPCT, cardiovascular magnetic resonance myocardial perfusion imaging (CMR-MPI), and invasive coronary angiography (ICA)...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29320324/spectrum-of-coronary-artery-aneurysms-from-the-radiologic-pathology-archives
#17
Jean Jeudy, Charles S White, Seth J Kligerman, Jonathan L Killam, Allen P Burke, Jacob W Sechrist, Amar B Shah, Rydhwana Hossain, Aletta Ann Frazier
Advances in medical diagnosis reveal that coronary artery aneurysms (CAAs) may develop in several clinical scenarios and manifest variable symptoms, imaging appearances, and outcomes. Aneurysms are pathologically classified into three groups: atherosclerotic, inflammatory, and noninflammatory. The last category is associated with congenital, inherited, and connective tissue disorders. Overlap exists among the groups, because secondary atherosclerotic change may be present in an aneurysm of any cause. Atherosclerosis is the most common cause of CAAs in adults, and inflammation is considered the underlying mechanism...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29312775/case-report-improvement-of-cardiac-remodeling-with-shock-wave-therapy-of-a-patient-with-ischemic-cardiomyopathy
#18
Yingnan Bai, Xiaoyan Wang, Xin Deng, Hongyi Wu, Abdel Hamid Fathy, Yan Xi, Yunzeng Zou, Jie Cui, Junbo Ge
Percutaneous coronary intervention (PCI) and coronary-artery bypass grafting (CABG) are two major preferred reperfusion strategies to restore the ischemic-related artery patency, but PCI and CABG do not necessarily guarantee the recovery of post-procedure left ventricular (LV) dysfunction and release of symptoms. Moreover, there is no definitive effective way to enhance microcirculations. Theoretically, shock wave therapy (SWT) is an option. We report here a case of patient who received SWT. The patient's medical history was characterized by chest pain for 20 years, having received CABG 13 years ago...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29312766/robotic-totally-endoscopic-coronary-artery-bypass-for-isolated-ostial-stenosis-of-the-left-coronary-artery
#19
Chia-Cheng Kuo, Chung-Hsi Hsing, Chun-I Chen, Chen-Hui Lee, Bor-Chih Cheng
Isolated ostial stenosis (IOS) is a rare disease that encroaches on aorto-coronary junction of uncertain etiology. All distal coronary vessels present normally. IOS occurs predominantly in premenopausal young women with few risk factors for atherosclerotic disease. Here, we report a 40-year-old woman who had experienced crescendo angina for 4 months. Surgical revascularization was achieved by robotic totally endoscopic coronary artery bypass (TECAB) with left internal thoracic artery (LITA) graft. She resumed her daily tasks without difficulties 1 week after the operation...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29311033/lesion-specific-and-vessel-related-determinants-of-fractional-flow-reserve-beyond-coronary-artery-stenosis
#20
Amir Ahmadi, Jonathon Leipsic, Kristian A Øvrehus, Sara Gaur, Emilia Bagiella, Brian Ko, Damini Dey, Gina LaRocca, Jesper M Jensen, Hans Erik Bøtker, Stephan Achenbach, Bernard De Bruyne, Bjarne L Nørgaard, Jagat Narula
OBJECTIVES: The aims of the present study were: 1) to investigate the contribution of the extent of luminal stenosis and other lesion composition-related factors in predicting invasive fractional flow reserve (FFR); and 2) to explore the distribution of various combinations of morphological characteristics and the severity of stenosis among lesions demonstrating normal and abnormal FFR. BACKGROUND: In patients with stable ischemic heart disease, FFR-guided revascularization, as compared with medical therapy alone, is reported to improve outcomes...
January 2, 2018: JACC. Cardiovascular Imaging
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