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Coronary computed tomography angiography

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https://www.readbyqxmd.com/read/29690806/a-case-of-ankylosing-spondylitis-with-concurrent-takayasu-arteritis
#1
Masakazu Matsushita, Shigeto Kobayashi, Kurisu Tada, Eri Hayashi, Ken Yamaji, Atsushi Amano, Naoto Tamura
We herein report a case involving a 56-year-old man who had experienced neck and lower back pain since the age of 23 years. Ankylosing spondylitis (AS) was diagnosed at 41 years of age, and treatment with sulfasalazine was initiated. At 44 years of age, the patient developed respiratory distress on exertion and chest pain. Aortic regurgitation (AR) was diagnosed via echocardiography, and the patient presented to our hospital for close examination and treatment. Coronary computed tomography angiography revealed no lesions in the coronary artery; however, magnetic resonance angiography revealed stenotic lesions in the left common carotid artery and left subclavian artery...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29688745/evaluation-of-dual-energy-computed-tomography-iodine-mapping-within-the-myocardial-blood-pool-for-detection-of-acute-myocardial-infarction-correlation-with-histopathologic-findings-in-a-porcine-model
#2
Kai Sun, Ruijuan Han, Ruiping Zhao, Shuancheng Bai, Junyan Wang, Jiang Hu, Bin Lu
OBJECTIVE: We assessed the diagnostic value of "one-step" dual-energy computed tomography (DECT) in combination with coronary CT angiography and iodine mapping within the myocardial blood pool in detecting AMI. METHODS: Five minipigs were subjected to transcatheter embolization of coronary artery with a gelatin sponge to induce AMI. Arterial-phase myocardial DECT imaging was carried out 1 h before and 24 h after embolism of the coronary. Color-coded iodine maps were used to evaluate myocardial blood pool deficits in the 17-segment model...
April 24, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29688734/assessing-the-relation-of-epicardial-fat-thickness-and-volume-quantified-by-256-slice-computed-tomography-scan-with-coronary-artery-disease-and-cardiovascular-risk-factors
#3
Maryam Mohammadzadeh, Vahid Mohammadzadeh, Madjid Shakiba, Marzieh Motevalli, Azadeh Abedini, Sakineh Kadivar, Pouya Entezari, Ali Mohammadzadeh
BACKGROUND: This study aimed to investigate the association between epicardial adipose tissue (EAT) and coronary artery disease (CAD) as well as cardiovascular risk factors. METHODS: Complete medical records of subjects were reviewed and cardiovascular risk factors were recorded. Epicardial fat volume (EFV) and epicardial fat thickness (EFT) were measured using digital volumetry of acquired images using a 256-slice CT-scanner. Calcium score was measured using Agatston method in non-contrast images...
March 1, 2018: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/29687696/long-term-prognostic-impact-of-non-invasive-follow-up-with-computed-tomography-angiography-in-patients-with-left-main-coronary-artery-stenting
#4
Gerard Roura, Josep Gomez-Lara, Lara Fuentes Castillo, Josè L Ferreiro, Rafael Romaguera, Luis Teruel, Montserrat Gracida Blancas, Elena Carreño, Joan A Gomez-Hospital, Angel Cequier
BACKGROUND: Left main coronary artery (LMCA) stenting is an evolving technique. Whether follow-up computed tomography angiography (CTA) might have clinical impact in these patients is controversial. The aim of present study is to compare clinical outcomes of patients with LMCA stenting followed with CTA versus patients with conventional clinical follow-up. METHODS: From 2003 to 2014 all consecutive patients with unprotected LMCA stenosis treated with single DES implantation were prospectively included...
April 20, 2018: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29685695/advanced-analyses-of-computed-tomography-coronary-angiography-can-help-discriminate-ischemic-lesions
#5
Jun-Mei Zhang, Dongsi Shuang, Lohendran Baskaran, Weijun Wu, Soo-Kng Teo, Weimin Huang, Like Gobeawan, John Carson Allen, Ru San Tan, Xi Su, Nasrul Bin Ismail, Min Wan, Boyang Su, Hua Zou, Ris Low, Xiaodan Zhao, Yanling Chi, Jiayin Zhou, Yi Su, Aileen Mae Lomarda, Chee Yang Chin, Jiang Ming Fam, Felix Yung Jih Keng, Aaron Sung Lung Wong, Jack Wei Chieh Tan, Khung Keong Yeo, Philip En Hou Wong, Chee Tang Chin, Kay Woon Ho, Jonathan Yap, Ghassan S Kassab, Terrance Chua, Tian Hai Koh, Swee Yaw Tan, Soo Teik Lim, Liang Zhong
BACKGROUND: Computed tomography coronary angiography (CTCA) image analysis enables plaque characterization and non-invasive fractional flow reserve (FFR) calculation. We analyzed various parameters derived from CTCA images and evaluated their associations with ischemia. METHODS: 49 (61 lesions) patients underwent CTCA and invasive FFR. Lesions with diameter stenosis (DS) ≥ 50% were considered obstructive. CTCA image processing incorporating analytical and numerical methods were used to quantify anatomical parameters of lesion length (LL) and minimum lumen area (MLA); plaque characteristic parameters of plaque volume, low attenuation plaque (LAP) volume, dense calcium volume (DCV), normalized plaque volume (NP Vol), plaque burden, eccentricity index and napkin-ring (NR) sign; and hemodynamic parameters of resistance index, stenosis flow reserve (SFR) and FFRB ...
April 20, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29685675/predictive-value-of-coronary-computed-tomography-angiography-in-asymptomatic-individuals-with-diabetes-mellitus-systematic-review-and-meta-analysis
#6
Ebba Beller, Felix G Meinel, Franziska Schoeppe, Wolfgang G Kunz, Kolja M Thierfelder, Jörg Hausleiter, Fabian Bamberg, U Joseph Schoepf, Verena S Hoffmann
BACKGROUND: Coronary CT angiography (CTA) is generally not established as a screening tool for asymptomatic individuals. However, it is controversial whether this test may have a role for screening asymptomatic individuals with diabetes mellitus (DM) due to the high prevalence of asymptomatic coronary artery disease (CAD) in this subgroup. METHODS: We searched PubMed and EMBASE through May 2017 for studies that reported on the association between findings at coronary CTA and future cardiac events in asymptomatic individuals with DM...
April 12, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29685202/correlation-between-immunological-inflammatory-markers-and-endothelial-disfunction-in-the-early-stage-of-coronary-heart-disease
#7
Viktor Persic, Ana Lanca Bastiancic, Ivan Rosovic, Damir Raljevic, Dijana Travica Samsa, Luka Bastiancic, Rajko Miskulin, Marko Boban, Gordana Laskarin
Classical risk factors for endothelial dysfunction (ED), such as age, gender, total cholesterol, high-density lipoprotein cholesterol, systolic blood pressure, and smoking history are utilised for the Framingham score and Systemic Coronary Risk Estimation (SCORE) for evaluation of the 10-year cardiovascular risk in routine practice. Nonetheless, pro-inflammatory mediators are deeply involved in the initiation and the progression of ED and coronary artery disease (CAD), and act additionally or independently of metabolic factors before clinical manifestations of the disease appear...
June 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29679191/myocardial-flow-reserve-derived-by-dynamic-perfusion-single-photon-emission-computed-tomography-reflects-the-severity-of-coronary-atherosclerosis
#8
Nobuo Iguchi, Yuko Utanohara, Yasuhiro Suzuki, Makoto Suzuki, Kenichi Hagiya, Ryosuke Higuchi, Itaru Takamisawa, Tetsuya Tobaru, Tetsuya Sumiyoshi, Mitsuaki Isobe
A novel single-photon emission computed tomography (SPECT) camera was developed to evaluate dynamic myocardial perfusion flow. However, it is unclear whether myocardial flow reserve (MFR) derived by dynamic perfusion SPECT using the novel SPECT camera (D-SPECT) reflects the severity of coronary atherosclerosis. In the present study, we therefore examined the relationship between MFR using D-SPECT and severity of coronary lesions. The study population comprised 40 patients who underwent both a myocardial dynamic perfusion SPECT study and invasive coronary angiography...
April 20, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29671538/stable-coronary-artery-disease-treatment
#9
Michael M Braun, William A Stevens, Craig H Barstow
Stable coronary artery disease refers to a reversible supply/demand mismatch related to ischemia, a history of myocardial infarction, or the presence of plaque documented by catheterization or computed tomography angiography. Patients are considered stable if they are asymptomatic or their symptoms are controlled by medications or revascularization. Treatment involves risk factor management, antiplatelet therapy, and antianginal medications. Tobacco cessation, exercise, and weight loss are the most important lifestyle modifications...
March 15, 2018: American Family Physician
https://www.readbyqxmd.com/read/29670522/dabigatran-added-to-dual-antiplatelet-therapy-to-treat-a-left-ventricular-thrombus-in-an-87-year-old-patient-with-myocardial-infarction-and-very-high-bleeding-risk
#10
Maria Noflatscher, Nicolas Moes, Eva-Maria Gassner, Peter Marschang
Background: A left ventricular (LV) thrombus is detected in approximately 5-10% of patients after myocardial infarction (MI). If left untreated, these LV thrombi carry a significant risk of complications including embolic stroke. According to current guidelines, anticoagulation with vitamin K antagonists (VKA) is recommended to treat a LV thrombus. Case presentation: An 87 year old patient was referred to our department with non ST-elevation MI. Five months before, he had been diagnosed with a subacute ST elevation MI, which had been treated conservatively...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29668609/the-success-of-opening-single-chronic-total-occlusion-lesions-to-improve-myocardialviabilitytrial-sos-comedy-study-protocol-of-a-prospective-multicenter-study
#11
MULTICENTER STUDY
Rongchong Huang, Xiantao Song, Haishan Zhang, Wen Tian, Zheng Huang, Xingwei Zhang, Junqing Yang, Dongfeng Zhang, Jian Wu, Lei Zhong, Henry H Ting
AIMS: Success of opening single (SOS)-comedy is a prospective multicenter study to compare the improvement in the decrease of myocardial viability by percutaneous coronary intervention (PCI) with that by optimal medical therapy (OMT) alone in patients with chronic total occlusion (CTO) of a single coronary artery. METHODS AND RESULTS: The risks and the benefits of both options (PCI and OMT) were listed in a CTO decision aid (DA). Eligible participants detected by invasive coronary angiography (ICA) or coronary computed tomography angiography (CCTA) were divided into PCI or OMT groups according to patients' choice after shared-decision making process with DA...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29667032/contrast-opacification-difference-of-mural-artery-and-the-transluminal-attenuation-gradient-on-coronary-computed-tomography-angiography-for-detection-of-systolic-compression-of-myocardial-bridge
#12
Yuanliang Xie, Xiang Wang, Wei Xie, Faxiang Chen, Shubo Gao, Yikai Xu
PURPOSE: Myocardial bridges (MB) have traditionally been considered a benign condition, but recent studies have demonstrated that the clinical complications can be dangerous. The transluminal attenuation gradient (TAG) obtained from coronary computed tomography angiography (CCTA) data (Retrospective ECG-triggered method) has been used in detecting significant stenosis in coronary artery caused by atherosclerosis. Contrast opacification difference (COD) was the parameters calculated as the change between attenuation of mural artery and the median attenuation of presumptive vessel segment; it was evaluated along with TAGstandardized (TAGs) and MB length for predicting MB with systolic compression (MB-SC) in patients diagnosed as MB in left anterior descending coronary artery (LAD) by CCTA or invasive coronary angiograph (ICA)...
April 17, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29657734/treatment-of-a-patient-with-acute-aortic-dissection-using-extracorporeal-cardiopulmonary-resuscitation-after-an-out-of-hospital-cardiac-arrest-a-case-report
#13
Takahiro Yukawa, Kazuhiro Sugiyama, Kazuki Miyazaki, Takahiro Tanabe, Susumu Ishikawa, Yuichi Hamabe
Case: Circulatory support using veno-arterial extracorporeal membrane oxygenation for aortic disease is conventionally contraindicated. In this case, a 66-year-old man experienced cardiopulmonary arrest caused by acute aortic dissection. When exercising in the gym, he experienced chest discomfort, so the staff immediately called an ambulance. While in the ambulance, he experienced cardiopulmonary arrest. His initial electrocardiogram showed ventricular fibrillation. At the emergency department, we immediately performed extracorporeal cardiopulmonary resuscitation...
April 2018: Acute Medicine & Surgery
https://www.readbyqxmd.com/read/29652747/the-incremental-clinical-value-of-cardiac-hybrid-spect-cta-imaging-in-coronary-artery-disease
#14
Lin Qiu, Hui Tan, Dengfeng Cheng, Hongcheng Shi
Coronary artery disease (CAD) is a major cause of death worldwide. It is significantly important to assess the coronary lesion and its pathophysiological relevance comprehensively. Coronary computed tomography angiography (CTA) or myocardial perfusion imaging alone suffers from some limitations in the evaluation of CAD. Through the integration and spatial colocalization of complementary morphological and functional information, the results of published hybrid single-photon emission computed tomography (SPECT)/CTA studies in patients with CAD are promising for detecting functionally relevant coronary artery lesion and evaluating the relationship between diseased coronary artery, coronary artery anomaly, myocardial bridging, or coronary calcification and myocardial ischemia...
April 12, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29650121/prediction-of-abnormal-myocardial-relaxation-from-signal-processed-surface-ecg
#15
Partho P Sengupta, Hemant Kulkarni, Jagat Narula
BACKGROUND: Myocardial relaxation is impaired in almost all cases with left ventricular diastolic dysfunction (LVDD) and is a strong predictor of cardiovascular and all-cause mortality. OBJECTIVES: This study investigated the feasibility of signal-processed surface electrocardiography (spECG) as a diagnostic tool for predicting the presence of abnormal cardiac muscle relaxation. METHODS: A total of 188 outpatients referred for coronary computed tomography (CT) angiography underwent an echocardiogram for assessment of LVDD...
April 17, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29644449/predictive-performance-of-dual-modality-of-computed-tomography-angiography-and-intravascular-ultrasound-for-no-reflow-phenomenon-after-percutaneous-coronary-stenting-in-stable-coronary-artery-disease
#16
Masaaki Okutsu, Takeshi Horio, Hisataka Tanaka, Maki Akiyama, Niro Okimoto, Toshiyuki Tsubouchi, Kenji Kawajiri, Yasuhiro Ohashi, Satoru Sumitsuji, Yuji Ikari
Attenuated plaque on intravascular ultrasound (IVUS) and low attenuation plaque on computed tomography angiography (CTA) are associated with no-reflow phenomenon during percutaneous coronary intervention (PCI). However, evaluation by a single modality has been unable to satisfactorily predict this phenomenon. We investigated whether the combination of IVUS and CTA findings can ameliorate the predictive potential for no-reflow phenomenon after stent implantation during PCI in stable coronary artery disease (CAD)...
April 11, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29622998/double-right-coronary-artery-detected-on-coronary-computed-tomography-angiography-a-case-report
#17
Osman Mohamed Elfadil, Yahya Mohamed Al Wahshi, Ahmed Al Shamakhi
Double right coronary artery is a relatively rare coronary anomaly. In this case report we aim to increase awareness of the importance of recognizing such anomaly and a brief literature review of similar cases and possible high risk features. Computed Tomography is well recognized modality to detect coronary anomaly and in our case we demonstrated this as well.
March 2018: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
https://www.readbyqxmd.com/read/29622992/the-degree-of-hair-graying-as-an-independent-risk-marker-for-coronary-artery-disease-a-ct-coronary-angiography-study
#18
Amr Abdel Aziz ElFaramawy, Irini Samuel Hanna, Reham Mohamed Darweesh, Ahmed Shehata Ismail, Hossam Ibrahim Kandil
Background: Cardiovascular disease is a leading cause of death worldwide. Aging is an unavoidable coronary risk factor and is associated with dermatological signs that could be a marker for increased coronary risk. We tested the hypothesis that hair graying as a visible marker of aging is associated with risk of coronary artery disease (CAD) independent of chronological age. Methods: This cross-sectional study included 545 males who underwent a computed tomography coronary angiography (CTCA) for suspicious of CAD, patients were divided into subgroups according to the percentage of gray/white hairs (Hair Whitening Score, HWS: 1-5) and to the absence or presence of CAD...
March 2018: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
https://www.readbyqxmd.com/read/29622983/myocardial-bridging-as-one-of-the-causes-of-atypical-chest-pain-in-young-women
#19
M Jukić, L Pavić, I Bitunjac, T Jukić, M Milošević, D Lovrić, M Lovrić Benčić
Introduction: Myocardial bridging is congenital anomaly which usually has benign prognosis but there are also reports suggesting that it can be associated with ischemic clinical syndromes presenting with chest pain. Coronary computed tomography angiography is a well-established method for detecting myocardial bridging. However, clinical significance of this anomaly still remains unclear. Methods: We studied 977 patients who presented with recurrent typical or atypical chest pain in outpatient clinic...
December 2017: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
https://www.readbyqxmd.com/read/29622443/pericardial-and-visceral-but-not-total-body-fat-are-related-to-global-coronary-and-extra-coronary-atherosclerotic-plaque-burden
#20
Gaston A Rodriguez-Granillo, Exequiel Reynoso, Carlos Capunay, Jimena Carpio, Patricia Carrascosa
BACKGROUND: To explore the relationship between coronary and extra-coronary atherosclerotic plaque burden with total and regional fat depots among patients undergoing ECG-gated aortic computed tomography angiography (CTA). METHODS: The subjects of this study comprised a cohort of consecutive patients who underwent ECG-gated thoracoabdominal CTA. We assessed the number of coronary segments with plaques (segment-involvement score, SIS); and the extra-coronary atherosclerotic plaque burden, comprising the aorta and supra-aortic trunks, iliofemoral arteries, and visceral arteries (extra-coronary SS)...
June 1, 2018: International Journal of Cardiology
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