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Cardiac computed tomography

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https://www.readbyqxmd.com/read/29331435/complications-of-chronic-total-occlusion-percutaneous-coronary-intervention-subepicardial-hematoma
#1
Punag Divanji, Kendrick Shunk
A 67-year-old man with coronary artery disease and previous coronary underwent successful Guideliner reverse CART percutaneous coronary intervention of a chronic total occlusion of the right coronary artery. He later developed evidence of myocardial ischemia, and imaging, including angiogram, echocardiogram, and cardiac computed tomography revealing active dye extravasation from the previously normal RV marginal branches, in addition to a large subepicardial hematoma. Despite these dramatic findings, the patient remained hemodynamically stable and pain-free, with resolving ECG changes...
December 30, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29330651/3d-computed-tomography-to-compare-the-dimensions-of-the-left-atrial-appendage-in-patients-with-normal-sinus-rhythm-and-those-with-paroxysmal-atrial-fibrillation
#2
Maiko Hozawa, Yoshihiro Morino, Yuki Matsumoto, Ryoichi Tanaka, Kyohei Nagata, Akiko Kumagai, Atsushi Tashiro, Akio Doi, Kunihiro Yoshioka
Although paroxysmal atrial fibrillation (PAF) is an important cause of cardioembolic stroke, in contrast to chronic AF patients, the anatomical features of the left atrial appendage (LAA) in PAF patients remain unknown. Here, we investigated differences in LAA structures in patients with PAF and those with normal sinus rhythms (NSR) using 3D-computed tomography (3D-CT), which allows us to visualize complicated LAA structures at high spatial resolution. Study subjects were 30 consecutive PAF and 30 NSR patients with complete enhanced cardiac 3D-CT images available...
January 12, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29330481/fdxr-is-a-biomarker-of-radiation-exposure-in-vivo
#3
Gráinne O'Brien, Lourdes Cruz-Garcia, Matthäus Majewski, Jakub Grepl, Michael Abend, Matthias Port, Aleš Tichý, Igor Sirak, Andrea Malkova, Ellen Donovan, Lone Gothard, Sue Boyle, Navita Somaiah, Elizabeth Ainsbury, Lucyna Ponge, Krzysztof Slosarek, Leszek Miszczyk, Piotr Widlak, Edward Green, Neel Patel, Mahesh Kudari, Fergus Gleeson, Volodymyr Vinnikov, Viktor Starenkiy, Sergii Artiukh, Leonid Vasyliev, Azfar Zaman, Christophe Badie
Previous investigations in gene expression changes in blood after radiation exposure have highlighted its potential to provide biomarkers of exposure. Here, FDXR transcriptional changes in blood were investigated in humans undergoing a range of external radiation exposure procedures covering several orders of magnitude (cardiac fluoroscopy, diagnostic computed tomography (CT)) and treatments (total body and local radiotherapy). Moreover, a method was developed to assess the dose to the blood using physical exposure parameters...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29327945/the-gas-bubble-sign-a-reliable-indicator-of-laryngeal-fractures-in-hanging-on-postmortem-computed-tomography
#4
Katja Schulze, Lars Christian Ebert, Thomas Daniel Ruder, Barbara Fliss, Sebastian Alexander Poschmann, Dominic Gascho, Michael Josef Thali, Patricia Mildred Flach
OBJECTIVE: The purpose was to evaluate the presence of gas in the tissue adjacent to the laryngeal structures, "the gas bubble sign", in cases of hanging as a diagnostic indicator of neck trauma. METHODS: In this study, postmortem computed tomography scans and autopsies of 35 victims of hanging were examined to reveal age-dependent changes, laryngeal fracture, fracture location, and the presence of gas. A matched group with cardiac arrest or intoxication was used as controls (n = 35)...
January 12, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29327057/distinguishing-uveitis-secondary-to-sarcoidosis-from-idiopathic-disease-cardiac-implications
#5
Yong Seop Han, Erick Rivera-Grana, Sherveen Salek, James T Rosenbaum
Importance: Idiopathic disease is the most frequent diagnosis in a uveitis clinic. The need to distinguish sarcoidosis from idiopathic uveitis is controversial. However, cardiac involvement in sarcoidosis can be life-threatening. Objective: To report a series of patients with uveitis and cardiac sarcoidosis to illustrate the importance of categorizing the causes of uveitis. Design, Setting, and Participants: This retrospective observational case series reviewed the medical records of 249 patients with uveitis who were referred to the Casey Eye Institute between July 1, 2008, and February 28, 2017...
January 11, 2018: JAMA Ophthalmology
https://www.readbyqxmd.com/read/29326780/cardiac-magnetic-resonance-of-myocardial-involvement-in-leptospirosis
#6
Onkar B Auti, Kanav Kansal, K V Shrikanth, Vimal Raj
Leptospirosis is a zoonotic infection caused by the Leptospira interrogans. Although it is endemic in tropical countries, global incidence has increased in several temperate and developed regions. Here, we present a cardiac magnetic resonance (CMR) and multidetector computer tomography (MDCT) chest features of active systemic leptospiral infection in a 19-year-old male. The MDCT appearances of lungs and CMR appearances of myocardium in icteric leptospirosis are described. Early diagnosis and prompt treatment is important to manage the cardiothoracic complications...
October 2017: Heart Views: the Official Journal of the Gulf Heart Association
https://www.readbyqxmd.com/read/29325551/relationship-between-cardiac-microvascular-dysfunction-measured-with-82rubidium-pet-and-albuminuria-in-patients-with-diabetes-mellitus
#7
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
#8
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/29322069/method-comparison-for-cardiac-image-registration-of-coronary-computed-tomography-angiography-and-3-d-echocardiography
#9
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/29321936/low-voltage-electricity-induced-lung-injury
#10
Thai Truong, Thuong Vu Le, David L Smith, Stephen P Kantrow, Van Ngoc Tran
We report a case of bilateral pulmonary infiltrates and haemoptysis following low-voltage electricity exposure in an agricultural worker. A 58-year-old man standing in water reached for an electric watering machine and sustained an exposure to 220 V circuit for an uncertain duration. The electricity was turned off by another worker, and the patient was asymptomatic for the next 10 h until he developed haemoptysis. A chest radiograph demonstrated bilateral infiltrates, and chest computed tomography (CT) revealed ground-glass opacities with interstitial thickening...
February 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29321426/percutaneous-coronary-intervention-for-a-patient-with-left-main-coronary-compression-syndrome
#11
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
#12
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
#13
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/29321211/pathophysiology-of-degenerative-mitral-regurgitation-new-3-dimensional-imaging-insights
#14
Clemence Antoine, Francesca Mantovani, Giovanni Benfari, Sunil V Mankad, Joseph F Maalouf, Hector I Michelena, Maurice Enriquez-Sarano
Despite its high prevalence, little is known about mechanisms of mitral regurgitation in degenerative mitral valve disease apart from the leaflet prolapse itself. Mitral valve is a complex structure, including mitral annulus, mitral leaflets, papillary muscles, chords, and left ventricular walls. All these structures are involved in physiological and pathological functioning of this valvuloventricular complex but up to now were difficult to analyze because of inherent limitations of 2-dimensional imaging. The advent of 3-dimensional echocardiography, computed tomography, and cardiac magnetic resonance imaging overcoming these limitations provides new insights into mechanistic analysis of degenerative mitral regurgitation...
January 2018: Circulation. Cardiovascular Imaging
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
#15
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/29317805/compression-of-the-right-coronary-artery-by-an-aortic-pseudoaneurysm-after-infective-endocarditis-an-unusual-case-of-myocardial-ischemia
#16
Juan Lacalzada-Almeida, Alejandro De la Rosa-Hernández, María Manuela Izquierdo-Gómez, Javier García-Niebla, Iván Hernández-Betancor, Juan Alfonso Bonilla-Arjona, Antonio Barragán-Acea, Ignacio Laynez-Cerdeña
A 61-year-old male with a prosthetic St Jude aortic valve size 24 presented with heart failure symptoms and minimal-effort angina. Eleven months earlier, the patient had undergone cardiac surgery because of an aortic root dilatation and bicuspid aortic valve with severe regurgitation secondary to infectious endocarditis by Coxiela burnetii and coronary artery disease in the left circumflex coronary artery. Then, a prosthesis valve and a saphenous bypass graft to the left circumflex coronary artery were placed...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29317451/duration-of-diabetes-and-prediabetes-during-adulthood-and-subclinical-atherosclerosis-and-cardiac-dysfunction-in-middle-age-the-cardia-study
#17
Jared P Reis, Norrina B Allen, Michael P Bancks, J Jeffrey Carr, Cora E Lewis, Joao A Lima, Jamal S Rana, Samuel S Gidding, Pamela J Schreiner
OBJECTIVE: To determine whether the duration of diabetes and duration of prediabetes estimated during a 25-year period in early adulthood are each independently associated with coronary artery calcified plaque (CAC) and abnormalities in left ventricular structure and function later in life. RESEARCH DESIGN AND METHODS: Participants were 3,628 white and black adults aged 18-30 years without diabetes or prediabetes at baseline (1985-1986) in the Coronary Artery Risk Development in Young Adults (CARDIA) Study...
January 9, 2018: Diabetes Care
https://www.readbyqxmd.com/read/29315366/long-term-prognostic-value-of-single-photon-emission-computed-tomography-myocardial-perfusion-imaging-after-primary-pci-for-stemi
#18
Jeff M Smit, Maaike P Hermans, Aukelien C Dimitriu-Leen, Alexander R van Rosendael, Petra Dibbets-Schneider, Lioe-Fee de Geus-Oei, Bart J Mertens, Martin J Schalij, Jeroen J Bax, Arthur J Scholte
Aims: The aim of this study was to determine the long-term prognostic value of infarct size and myocardial ischaemia on single-photon emission computed tomography myocardial perfusion imaging (SPECT MPI) after primary percutaneous coronary intervention (PCI) for ST-segment elevation myocardial infarction (STEMI). Methods and results: In total, 1092 STEMI patients who underwent primary PCI and SPECT MPI within 1-6 months were included (median follow-up time of 6...
January 5, 2018: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29312775/case-report-improvement-of-cardiac-remodeling-with-shock-wave-therapy-of-a-patient-with-ischemic-cardiomyopathy
#19
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/29310688/effect-of-eicosapentaenoic-acid-docosahexaenoic-acid-on-coronary-high-intensity-plaques-detected-with-non-contrast-t1-weighted-imaging-the-aquamarine-epa-dha-study-study-protocol-for-a-randomized-controlled-trial
#20
Kazuhiro Nakao, Teruo Noguchi, Yasuhide Asaumi, Yoshiaki Morita, Tomoaki Kanaya, Masashi Fujino, Hayato Hosoda, Shuichi Yoneda, Shoji Kawakami, Toshiyuki Nagai, Kensaku Nishihira, Takahiro Nakashima, Reon Kumasaka, Tetsuo Arakawa, Fumiyuki Otsuka, Michio Nakanishi, Yu Kataoka, Yoshio Tahara, Yoichi Goto, Haruko Yamamoto, Toshimitsu Hamasaki, Satoshi Yasuda
BACKGROUND: Despite the success of HMG-CoA reductase inhibitor (statin) therapy in reducing atherosclerotic cardiovascular events, a residual risk for cardiovascular events in patients with coronary artery disease (CAD) remains. Long-chain n-3 polyunsaturated fatty acids (LC n-3 PUFAs), especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are promising anti-atherosclerosis agents that might reduce the residual CAD risk. Non-contrast T1-weighted imaging (T1WI) with cardiac magnetic resonance (CMR) less invasively identifies high-risk coronary plaques as high-intensity signals...
January 8, 2018: Trials
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