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Coronary cardiac computed tomography

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https://www.readbyqxmd.com/read/28534102/circulating-microaggregates-during-cardiac-surgery-precedes-postoperative-stroke
#1
Zühre Uz, Dan M J Milstein, Can Ince, Bastian A J M de Mol
Postoperative stroke and encephalopathy are potentially serious complications associated with coronary artery bypass grafting. In this case report a 78-year-old male patient receiving routine elective cardiac surgery presented with microaggregations in the sublingual microcirculation while on cardiopulmonary bypass that was undetected by routine intraoperative anticoagulation assessment. Microaggregates identified using video microscopy on his sublingual microcirculation during the procedure preceded a stroke postoperatively...
May 22, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28530215/takotsubo-cardiomyopathy-after-intravenous-epinephrine-administration-following-cardiac-arrest-provoked-by-pneumoperitoneum-a-case-report
#2
Waldemar Elikowski, Malgorzata Małek-Elikowska, Jacek Karoń, Maria Mrozińska, Alina Baszko, Karolina Horbacka
In stress-induced takotsubo cardiomyopathy (TC) high levels of catecholamines, including epinephrine, may be detected in blood. On the other hand, administration of exogenous epinephrine may occasionally result in TC. A CASE REPORT: The authors describe a case of a 58-year-old, otherwise healthy female, with TC which occurred after intravenous injection of 1 mg of epinephrine against cardiac arrest provoked by pneumoperitoneum performed before planned laparoscopic cholecystectomy. She was admitted 3 days earlier due to biliary colic following a dietary mistake...
April 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28528743/-18-f-sodium-fluoride-positron-emission-tomography-for-molecular-imaging-of-coronary-atherosclerosis-based-on-computed-tomography-analysis
#3
Toshiro Kitagawa, Hideya Yamamoto, Shinya Toshimitsu, Ko Sasaki, Atsuhiro Senoo, Yumiko Kubo, Fuminari Tatsugami, Kazuo Awai, Yutaka Hirokawa, Yasuki Kihara
BACKGROUND AND AIMS: We aimed at evaluating the relation of (18)F-sodium fluoride ((18)F-NaF) uptake on positron emission tomography (PET) to coronary atherosclerosis detected and assessed by computed tomography (CT). METHODS: Thirty-two patients with one or more coronary atherosclerotic lesions detected on cardiac CT underwent (18)F-NaF PET/CT. Each coronary atherosclerotic lesion was evaluated on CT angiography for plaque types (calcified plaque [CP], non-calcified plaque [NCP], partially calcified plaque [PCP]), and the presence of CT-based high-risk features (minimum CT density <30 Hounsfield units and vascular remodeling index >1...
April 29, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28523283/variable-temporal-sampling-and-tube-current-modulation-for-myocardial-blood-flow-estimation-from-dose-reduced-dynamic-computed-tomography
#4
Dimple Modgil, Michael D Bindschadler, Adam M Alessio, Patrick J La Rivière
Quantification of myocardial blood flow (MBF) can aid in the diagnosis and treatment of coronary artery disease. However, there are no widely accepted clinical methods for estimating MBF. Dynamic cardiac perfusion computed tomography (CT) holds the promise of providing a quick and easy method to measure MBF quantitatively. However, the need for repeated scans can potentially result in a high patient radiation dose, limiting the clinical acceptance of this approach. In our previous work, we explored techniques to reduce the patient dose by either uniformly reducing the tube current or by uniformly reducing the number of temporal frames in the dynamic CT sequence...
April 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28516101/early-spontaneous-resolution-of-an-iatrogenic-acute-type-a-aortic-dissection
#5
Mohammad A Zafar, Philip Y K Pang, Glen A Henry, Bulat A Ziganshin, Maryann Tranquilli, John A Elefteriades
Acute aortic dissection is a rare but devastating complication during cardiac catheterization. We present the case of an elderly female who incurred a Stanford Type A/DeBakey Type I acute aortic dissection extending into the arch vessels and descending aorta likely occurring during right coronary artery engagement for angioplasty. The patient was treated successfully by immediately sealing the entrance of the dissection via the placement of a stent and anti-impulse therapy. Follow-up computed tomography scan showed complete resolution of the dissection within one month...
December 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28516090/lower-aorto-iliac-bifurcation-position-and-incident-cardiovascular-disease-a-multi-ethnic-study-of-atherosclerosis-mesa
#6
Nketi I Forbang, Matthew A Allison, Michael H Criqui
BACKGROUND: With increasing age, a downward shift of the aorto-iliac bifurcation relative to the lumbar spine occurs. A lower bifurcation position is an independent marker for adverse vascular aging and is associated with increased burden of cardiovascular disease (CVD) risk factors; however, the associations between lower bifurcation position and CVD events remain unknown. METHODS: Abdominal computed tomography scans were used to measure the aorto-iliac bifurcation distance (AIBD, distance from the aorto-iliac bifurcation to the L5/S1 disc space)...
October 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28511327/-determination-of-iodine-content-in-the-left-ventricular-myocardium-of-healthy-subjects-using-dual-source-dual-energy-ct-myocardial-first-perfusion-imaging-a-preliminary-study
#7
Z X Chen, G Wang, L Liang, X R Lu, Q H Guo, Y N Zhai, X N Shi
Objective: To analyze the normal value of the iodine content in the left ventricular myocardium of healthy subjects and to observe if there is a segmental differences on iodine distribution by using the second generation dual-source dual-energy computed tomography myocardial first perfusion imaging. Methods: In this retrospective study, 42 healthy subjects, who admitted to our department between January to June 2016, with normal second generation dual-source dual-energy computed tomography and coronary CT angioghphy (CTA), electrocardiogram (ECG) results, normal cardiac, hepatic, renal function, normal myocardial enzymes results were enrolled, data from 38 out of 42 subjects with satisfactory image quality were analyzed using Siemens Dual Energy-Heart PBV image processing software...
May 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28509705/yield-of-cardiac-magnetic-resonance-imaging-in-patients-with-acute-coronary-syndrome-and-no-obstructive-coronary-artery-disease
#8
Mahraz Parvand, Andrew Starovoytov, Tara L Sedlak
PURPOSE: Ten percent to 25% of women and 6%-10% of men with acute coronary syndrome (ACS) are found to have no obstructive coronary artery disease (CAD) on coronary computed tomography angiogram or invasive coronary angiography. The etiology of presentation is often unclear. We examined the diagnostic yield of cardiac magnetic resonance imaging (CMR) in patients with signs and symptoms suggestive of an ACS and no obstructive CAD. METHODS: We retrospectively studied patients with signs and symptoms suggestive of an ACS and no obstructive CAD on coronary computed tomography angiogram or invasive coronary angiography who had CMR performed at St...
June 2017: Critical Pathways in Cardiology
https://www.readbyqxmd.com/read/28504218/first-in-human-evaluation-of-a-novel-poly-l-lactide-based-sirolimus-eluting-bioresorbable-vascular-scaffold-for-the-treatment-of-de-novo-native-coronary-artery-lesions-meres-1-trial
#9
Ashok Seth, Yoshinobu Onuma, Ricardo Costa, Praveen Chandra, Vinay K Bahl, Cholenahally N Manjunath, Ajaykumar U Mahajan, Viveka Kumar, Pravin K Goel, Gurpreet S Wander, Mathew S Kalarickal, Upendra Kaul, V K Ajit Kumar, Pratap C Rath, Vijay Trehan, Gunasekaran Sengottuvelu, Sundeep Mishra, Alexandre Abizaid, Patrick W Serruys
AIMS: The MeRes-1 trial sought to study the safety and effectiveness of a novel sirolimus-eluting bioresorbable vascular scaffold (MeRes100 BRS) in treating de novo native coronary artery lesions by clinical evaluation and using multiple imaging modalities. METHODS AND RESULTS: The MeRes-1 first-in-human trial was a single-arm, prospective, multicentre study, which enrolled 108 patients with de novo coronary artery lesions (116 scaffolds were deployed to treat 116 lesions in 108 patients)...
May 16, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28500370/long-term-prognostic-performance-of-low-dose-coronary-computed-tomography-angiography-with-prospective-electrocardiogram-triggering
#10
Olivier F Clerc, Basil P Kaufmann, Mathias Possner, Riccardo Liga, Jan Vontobel, Fran Mikulicic, Christoph Gräni, Dominik C Benz, Tobias A Fuchs, Julia Stehli, Aju P Pazhenkottil, Oliver Gaemperli, Philipp A Kaufmann, Ronny R Buechel
OBJECTIVES: To assess long-term prognosis after low-dose 64-slice coronary computed tomography angiography (CCTA) using prospective electrocardiogram-triggering. METHODS: We included 434 consecutive patients with suspected or known coronary artery disease referred for low-dose CCTA. Patients were classified as normal, with non-obstructive or obstructive lesions, or previously revascularized. Coronary artery calcium score (CACS) was assessed in 223 patients. Follow-up was obtained regarding major adverse cardiac events (MACE): cardiac death, myocardial infarction and elective revascularization...
May 12, 2017: European Radiology
https://www.readbyqxmd.com/read/28497506/left-ventricular-obstruction-caused-by-a-large-hiatal-hernia
#11
Kenji Harada, Ushio Tamura, Chiyo Ichimiya, Naho Terada, Yasuhiro Yokoyama, Norihito Kageyama, Akira Hirono, Yuya Hiroshima, Takeshi Omura, Hirofumi Yamamoto, Hiroyuki Fujinaga
A 76-year-old man was admitted to our emergency department owing to chest pain, which started immediately after lunch. Although electrocardiogram revealed ST-segment elevation with hyperacute T-wave changes in the anterior lead tracings, emergency coronary angiography revealed normal coronary arteries. Echocardiography revealed left ventricular (LV) compression with left ventricular obstruction (LVO) caused by an echogenic mass. Computed tomography clearly revealed compression of both left atrial (LA) and LV by a large hiatal hernia...
May 12, 2017: Echocardiography
https://www.readbyqxmd.com/read/28497191/evaluation-of-the-coronary-circulation-and-calcification-in-children-on-regular-hemodialysis
#12
Mohammed Al-Biltagi, Maher Ahmed Abd ElHafez, Doaa Mohamed El Amrousy, Mohamed El-Gamasy, Hesham El-Serogy
BACKGROUND: The objective of this study was to evaluate the coronary circulation and calcification in children with end-stage renal disease (ESRD) on hemodialysis. METHODS: A total of 50 children with ESRD and 50 healthy controls were enrolled in the study. Cardiac functions and coronary blood flow were evaluated with conventional and tissue Doppler echocardiography. Coronary artery calcification (CAC) was evaluated using high-resolution multidetector computed tomography (CT)...
May 11, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28496513/dog-footprint-in-the-heart
#13
Hassan Aghajani, Shahrooz Yazdani, Seyed Khalil Forouzan Nia, Hamed Vahidi, Faezeh Aghajani
Cardiac manifestations of the hydatid cyst are relatively uncommon. Cardiac involvement may lead to the compression of vital organs, pulmonary hypertension, pericardial effusion, and even anaphylaxis. A 45-year-old woman presented to the Emergency Department of Tehran Heart Center with chest pain. Cardiac examination revealed relatively muffled heart sounds. Echocardiography demonstrated a round echolucent well-defined mass (47 × 25 mm) on the base and the mid lateral wall of the left ventricle (LV) without septation...
October 3, 2016: Journal of Tehran Heart Center
https://www.readbyqxmd.com/read/28496087/-rupture-of-an-aneurysm-of-the-right-sinus-of-valsalva-into-the-pericardium-report-of-a-case
#14
Satoshi Uesugi, Koji Kawahito, Hirotaka Sato, Akira Sugaya, Yoshio Misawa
A sinus of Valsalva aneurysm is an uncommon cardiac anomaly. The aneurysm usually ruptures into the cardiac cavity, and rupture into the pericardial cavity is unusual. A 69-year-old man was admitted to our hospital after collapse due to cardiac tamponade. Computed tomography revealed a ruptured right sinus of Valsalva aneurysm (5 cm) with massive pericardial effusion. The right coronary artery arose from the aneurysm. Severe aortic regurgitation due to the lack of coaptation of the valves was detected by echocardiography...
May 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28492571/-teamwork-for-cardiac-imaging-coronary-computed-tomography-angiography-and-low-dose-radiation-exposure-a-cardiology-center-experience
#15
Massimo Magnacca, Rosa Poddighe, Jacopo Del Meglio, Alessio Lilli, Marco Tullio Baratto, Maria Laura Canale, Carlo Tessa, Luca Salvatori, Alessandra Niespolo, Claudio Vignali, Giancarlo Casolo
BACKGROUND: Multidetector coronary computed tomography angiography (CCTA) is increasingly used for noninvasive imaging of the coronary arteries. Radiation exposure, however, is a potential limitation to a more extensive use of this imaging modality. We aimed to demonstrate that a professional teamwork approach, including a cardiologist and a radiologist in performing CCTA, may allow to obtain best quality exams with very low radiation doses. METHODS: A total of 998 consecutive patients underwent CCTA in accordance with the most recent guidelines...
April 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28491160/asymptomatic-left-ventricular-hemangioma
#16
Su-Jin Jeong, Sang-Hoon Seol, Dong-Hee Park, Heon Sa-Kong, Yun-Seok Song, Ho-Ki Min, Ji-Yeon Kim
Cardiac hemangiomas are very rare benign neoplasms that are usually asymptomatic. Although there are often found incidentally during echocardiography, other imaging modalities such as computed tomography, magnetic resonance imaging, and coronary angiography are needed to establish a diagnosis. Surgical excision is therefore recommended to confirm the diagnosis and avoid potential complications. We report a case of asymptomatic cardiac hemangioma that was discovered incidentally during echocardiography.
June 2017: Radiology case reports
https://www.readbyqxmd.com/read/28491158/an-unusual-cause-of-atrial-fibrillation-in-a-young-active-duty-soldier
#17
Rafik BenAbda, Anne Gunn, Eric Roberge, Ting-Wei Yang
Coronary artery fistula (CAF) is an abnormality in which the coronary artery has an anomalous connection with a venous structure such as the coronary sinus or atrium. CAF is usually congenital, but may be acquired. The prevalence in the general population is low with many asymptomatic and discovered incidentally. When symptomatic, CAF may present with dyspnea, decreasing functional capacity, and/or arrhythmia. We report a case of a young otherwise healthy active duty male with progressive symptoms of dizziness and exertional fatigue with paroxysmal atrial fibrillation...
June 2017: Radiology case reports
https://www.readbyqxmd.com/read/28491157/infracardiac-type-total-anomalous-pulmonary-venous-return-with-obstruction-and-dilatation-of-portal-vein
#18
Felipe Aluja Jaramillo, Cristian Hernandez, Juan Pablo Garzón, Angela Paola Sánchez Herrera, Martha Lucia Velasco Morales
Total anomalous pulmonary venous return (TAPVR), also known as total anomalous pulmonary venous connection, is a congenital cardiovascular malformation that presents itself in the neonatal period, with cyanosis and tachypnea. There are 4 types of TAPVR with the mixed type being the least common. Any type of TAPVR may be associated with obstruction as result of flow redirection through the liver parenchyma before it may return to the heart, but infracardiac is the most common one. We report a case of a 10-hour-old female, with a mixed (cardiac and infracardiac) TAVPR with obstruction, that showed drainage to the coronary sinus and the portal vein, as the other classic findings in TAVPR, made with computed tomography angiography and echocardiogram...
June 2017: Radiology case reports
https://www.readbyqxmd.com/read/28483581/prognostic-value-of-segment-involvement-score-compared-to-other-measures-of-coronary-atherosclerosis-by-computed-tomography-a-systematic-review-and-meta-analysis
#19
Chadi Ayoub, Fernanda Erthal, Mahmoud A Abdelsalam, M Hassan Murad, Zhen Wang, Patricia J Erwin, Graham S Hillis, Leonard Kritharides, Benjamin J W Chow
BACKGROUND: The segment involvement score (SIS) is a semiquantitative measure of the extent of atherosclerosis burden by coronary computed tomography angiography (CTA). We sought to evaluate by meta-analysis the prognostic value of SIS, and to compare it with other CTA measures of coronary artery disease (CAD). METHODS: Electronic databases from 1946 to January 2016 were searched. Studies reporting SIS, or an equivalent measure by coronary CTA, and clinical outcomes were included...
May 3, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28479514/comprehensive-use-of-cardiac-computed-tomography-to-guide-left-ventricular-lead-placement-in-cardiac-resynchronization-therapy
#20
Jonathan M Behar, Ronak Rajani, Amir Pourmorteza, Rebecca Preston, Orod Razeghi, Steve Niederer, Shaumik Adhya, Simon Claridge, Tom Jackson, Ben Sieniewicz, Justin Gould, Gerry Carr-White, Reza Razavi, Elliot McVeigh, Christopher Aldo Rinaldi
BACKGROUND: Optimal lead positioning is an important determinant of cardiac resynchronization therapy (CRT) response. OBJECTIVE: Evaluation of cardiac computed tomography (CT) selection of the optimal epicardial vein for LV lead placement by targeting regions of late mechanical activation (LMA) and avoiding myocardial scar. METHODS: 18 patients undergoing CRT upgrade with existing pacing systems, underwent pre-implant ECG-gated cardiac CT to assess wall thickness, hypoperfusion, LMA and regions of myocardial scar by the derivation of the Stretch Quantifier of Endocardial Engraved Zones (SQUEEZ) algorithm...
May 4, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
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