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https://www.readbyqxmd.com/read/28296296/biplane-interventional-pediatric-system-with-cone-beam-ct-dose-and-image-quality-characterization-for-the-default-protocols
#1
Eva Corredoira, Eliseo Vañó, Luis Alejo, Carlos Ubeda, Federico Gutiérrez-Larraya, Julia Garayoa
The aim of this study was to assess image quality and radiation dose of a biplane angiographic system with cone-beam CT (CBCT) capability tuned for pediatric cardiac procedures. The results of this study can be used to explore dose reduction techniques. For pulsed fluoroscopy and cine modes, polymethyl methacrylate phantoms of various thicknesses and a Leeds TOR 18-FG test object were employed. Various fields of view (FOV) were selected. For CBCT, the study employed head and body dose phantoms, Catphan 504, and an anthropomorphic cardiology phantom...
July 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28284205/usage-of-3d-models-of-tetralogy-of-fallot-for-medical-education-impact-on-learning-congenital-heart-disease
#2
Yue-Hin Loke, Ashraf S Harahsheh, Axel Krieger, Laura J Olivieri
BACKGROUND: Congenital heart disease (CHD) is the most common human birth defect, and clinicians need to understand the anatomy to effectively care for patients with CHD. However, standard two-dimensional (2D) display methods do not adequately carry the critical spatial information to reflect CHD anatomy. Three-dimensional (3D) models may be useful in improving the understanding of CHD, without requiring a mastery of cardiac imaging. The study aimed to evaluate the impact of 3D models on how pediatric residents understand and learn about tetralogy of Fallot following a teaching session...
March 11, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28265641/-nuclear-medicine-in-germany-updated-key-data-and-trends-from-official-statistics
#3
Dirk Hellwig, Jörg Marienhagen, Karin Menhart, Jirka Grosse
AIM: Updated presentation of the spectrum of nuclear medicine in-vivo examinations and therapies from officially available statistics on out-patient and in-patient care as well as trends of structural data on nuclear medicine in Germany. METHODS: Data from the German Federal Health Monitoring, from the frequency statistics of the statutory health insurance for out-patients and from the German Medical Association were used and supplemented by data from selective literature searches...
March 7, 2017: Nuklearmedizin. Nuclear Medicine
https://www.readbyqxmd.com/read/28242586/feasibility-and-safety-of-direct-catheter-based-thrombectomy-in-the-treatment-of-acute-ischemic-stroke-cooperation-of-cardiologists-neurologists-and-radiologists-prospective-registry-prague-16
#4
Petr Widimsky, Boris Koznar, Tomas Peisker, Peter Vasko, Filip Rohac, Jana Vavrova, Josef Kroupa, Ivana Stetkarova
AIMS: The aim of this study was to evaluate the role of direct catheter-based thrombectomy (d-CBT, without thrombolysis) and the feasibility and safety of d-CBT performed in an interventional cardiology center. METHODS AND PATIENTS: Single center, prospective observational registry based on the prespecified protocol included 3 months follow-up. The decision to perform acute stroke intervention was done by a neurologist based on the clinical and imaging findings...
February 28, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28237004/nuclear-medicine-in-pediatric-cardiology
#5
REVIEW
Ornella Milanesi, Giovanni Stellin, Pietro Zucchetta
Accurate cardiovascular imaging is essential for the successful management of patients with congenital heart disease (CHD). Echocardiography and angiography have been for long time the most important imaging modalities in pediatric cardiology, but nuclear medicine has contributed in many situations to the comprehension of physiological consequences of CHD, quantifying pulmonary blood flow symmetry or right-to-left shunting. In recent times, remarkable improvements in imaging equipments, particularly in multidetector computed tomography and magnetic resonance imaging, have led to the progressive integration of high resolution modalities in the clinical workup of children affected by CHD, reducing the role of diagnostic angiography...
March 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/28212053/transthoracic-echocardiography-pitfalls-and-limitations-as-delineated-at-cardiac-ct-and-mr-imaging
#6
Sachin B Malik, Natalie Chen, Rex A Parker, Joe Y Hsu
Transthoracic echocardiography ( TTE transthoracic echocardiography ) is a critical tool in the field of clinical cardiology. It often serves as one of the first-line imaging modalities in the evaluation of cardiac disease owing to its low cost, portability, widespread availability, lack of ionizing radiation, and ability to evaluate both anatomy and function of the heart. Consequently, a large majority of patients undergoing a cardiac computed tomography (CT) or magnetic resonance (MR) imaging examination will have a TTE transthoracic echocardiography available for review...
March 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28186939/cardiac-diagnostic-work-up-for-atrial-fibrillation-after-transient-ischaemic-attacks-in-england-and-wales-results-from-a-cross-sectional-survey
#7
Olivia Geraghty, Eleni Korompoki, Filippos T Filippidis, Anthony Rudd, Roland Veltkamp
OBJECTIVES: Transient ischaemic attacks (TIAs) are an important precursor of stroke. Atrial fibrillation (AF) is among the most dangerous aetiologies shared between TIAs and strokes. Detection of AF after TIAs is essential for the initiation of oral anticoagulants. We aimed to identify variations in the use of cardiac investigations used to detect AF and cardiac pathology in patients with TIA in the UK. SETTING: All TIA clinical leads in England and Wales received an invitation by email to participate in an online survey in February 2015...
November 10, 2016: BMJ Open
https://www.readbyqxmd.com/read/28160262/comparison-between-the-summed-difference-score-and-myocardial-blood-flow-measured-by-13-n-ammonia
#8
Raffaele Giubbini, Alessia Peli, Elisa Milan, Roberto Sciagrà, Luca Camoni, Domenico Albano, Mattia Bertoli, Mattia Bonacina, Federica Motta, Massimo Statuto, Carlo Alberto Rodella, Antonio De Agostini, Raffaella Calabretta, Francesco Bertagna
BACKGROUND: Both the myocardial perfusion pattern and myocardial blood flow (MBF) are used to assess patients with suspected coronary artery disease (CAD). The aim of this study was to compare the perfusion pattern (using the summed difference score [SDS]) to MBF in a consecutive group of patients undergoing PET/CT with 13 N-ammonia ((13)NH3). METHODS: 47 consecutive patients, aged 65 ± 12 years (42 men) with known or suspected CAD, underwent vasodilator stress/rest PET/CT with (13)NH3 for clinical indications...
February 3, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28148317/echocardiography-of-coarctation-of-the-aorta-aortic-arch-hypoplasia-and-arch-interruption-strategies-for-evaluation-of-the-aortic-arch
#9
REVIEW
Suma P Goudar, Sanket S Shah, Girish S Shirali
Aim Echocardiography is the modality of choice for the diagnosis and serial follow-up of aortic arch pathology. In this article, we review the types of obstruction of the aortic arch, various classification schemes of coarctation of the aorta and interrupted aortic arch, methodology for optimal echocardiographic imaging of the aortic arch, and key echocardiographic measurements for accurate diagnosis of obstruction and hypoplasia of the aortic arch. Finally, we will discuss the limitations of echocardiography in optimal imaging of the aortic arch and the use of other non-invasive imaging modalities such as CT or MRI to provide additional information in these cases...
December 2016: Cardiology in the Young
https://www.readbyqxmd.com/read/28130653/addressing-knowledge-gaps-in-the-2013-acc-aha-guideline-on-the-assessment-of-cardiovascular-risk-a-review-of-recent-coronary-artery-calcium-literature
#10
REVIEW
Vasanth Sathiyakumar, Roger S Blumenthal, Khurram Nasir, Seth S Martin
PURPOSE OF REVIEW: Coronary artery calcium (CAC) has been proposed as an integrator of information from traditionally measured, non-traditionally measured, and unmeasured risk factors for coronary atherosclerosis. The 2013 American College of Cardiology/American Heart Association Guideline on the Assessment of Cardiovascular Risk identified several knowledge gaps regarding CAC, including radiation risks, cost-effectiveness, and improving discrimination and reclassification of estimated risk over the Pooled Cohort Equations in the ACC/AHA Atherosclerotic Cardiovascular Disease Estimator...
February 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/27982544/cardiovascular-preclinical-imaging
#11
Stephan G Nekolla, Christoph Rischpler, Anna Paschali, Constantinos Anagnostopoulos
Non-invasive imaging in the form of single-photon emission-computed tomography (SPECT), positron-emission tomography (PET), computed tomography (CT), echocardiography or magnetic resonance imaging (MRI) is a very useful tool for cardiovascular research as it allows assessment of biological processes in vivo. Nuclear imaging with SPECT and PET offers the advantage of high sensitivity, the potential for serial imaging, and reliable quantification. Currently a wide range of established as well as innovative agents is available and can be imaged with dedicated preclinical and clinical SPECT and PET imaging systems...
March 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27957647/dosimetry-in-micro-computed-tomography-a-review-of-the-measurement-methods-impacts-and-characterization-of-the-quantum-gx-imaging-system
#12
Jeffrey A Meganck, Bob Liu
PURPOSE: X-ray micro-computed tomography (μCT) is a widely used imaging modality in preclinical research with applications in many areas including orthopedics, pulmonology, oncology, cardiology, and infectious disease. X-rays are a form of ionizing radiation and, therefore, can potentially induce damage and cause detrimental effects. Previous reviews have touched on these effects but have not comprehensively covered the possible implications on study results. Furthermore, interpreting data across these studies is difficult because there is no widely accepted dose characterization methodology for preclinical μCT...
December 12, 2016: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/27924361/prevalence-of-non-cardiovascular-findings-on-ct-angiography-in-children-with-congenital-heart-disease
#13
Archana Malik, Jeffrey C Hellinger, Sabah Servaes, Mathew C Schwartz, Marc S Keller, Monica Epelman
BACKGROUND: CT angiography is gaining broader acceptance in the evaluation of children with known or suspected congenital heart disease. These studies include non-cardiovascular structures such as the mediastinum, lung parenchyma and upper abdominal organs. It is important to inspect all these structures for potential abnormalities that might be clinically important and, in some cases, may impact care plans. OBJECTIVE: To determine the prevalence of non-cardiovascular findings in CT angiography of children with congenital heart disease...
March 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/27906915/the-value-of-ct-cardiac-angiography-and-ct-calcium-score-testing-in-a-modern-cardiology-service-in-new-zealand-a-report-of-a-single-centre-eight-year-experience-from-5-237-outpatient-procedures
#14
Chris Ellis, Greg Gamble, Colin Edwards, Niels van Pelt, Ruvin Gabriel, Boris Lowe, Jonathan Christiansen, Andrew To, Helen Winch, Mark Osborne, John Ormiston, Malcolm Legget
BACKGROUND: Computed tomographic (CT) cardiac angiography is of increasing value in several areas of patient management in cardiology. We assessed the ability of CT cardiac angiography to effectively 'rule out' severe coronary stenoses in patients presenting with 'atypical' symptoms and/or an equivocal stress test, which offers a new approach to the management of coronary artery disease. We also examined the use of the CT calcium score test in cardiovascular (CVS) risk assessment. METHODS: From a large single centre (Mercy Hospital) in Auckland, using a prospectively acquired, comprehensive database, we audited the entire eight-year experience of 5,169 patients (7/8/06 to 31/1/14) who underwent 5,237 64-slice computed tomographic (CT) cardiac angiogram or CT calcium score tests (GE Lightspeed scanner)...
December 2, 2016: New Zealand Medical Journal
https://www.readbyqxmd.com/read/27858404/advances-in-multimodal-molecular-imaging
#15
Luigi Auletta, Matteo Gramanzini, Sara Gargiulo, Sandra Albanese, Marco Salvatore, Adelaide Greco
Preclinical molecular imaging is an emerging field. Improving the ability of scientists to study the molecular basis of human pathology in animals is of the utmost importance for future advances in all fields of human medicine. Moreover, the possibility of developing new imaging techniques or of implementing old ones adapted to the clinic is a significant area. Cardiology, neurology, immunology and oncology have all been studied with preclinical molecular imaging. The functional techniques of photoacoustic imaging (PAI), fluorescence molecular tomography (FMT), positron emission tomography (PET), and single photon emission computed tomography (SPECT) in association with each other or with the anatomic reference provided by computed tomography (CT) as well as with anatomic and functional information provided by magnetic resonance (MR) have all been proficiently applied to animal models of human disease...
March 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27822623/-esc-and-aha-guidelines-2015-on-endocarditis-in-competition-or-synchrony
#16
Bernhard Maisch
In the 2015 guidelines of the European Society of Cardiology (ESC) and the American Heart Association (AHA) on infective endocarditis, the diagnostics are based on the modified Duke criteria. The diagnosis can be confirmed by a combination of micro-organisms demonstrated in culture or in situ, with the detection of valvular lesions or abscess formation by an imaging modality using echocardiography, positron emission tomography computed tomography (PET/CT), cardio-CT or nuclear medical methods. The management should be further improved by an interdisciplinary endocarditis team in a specifically designated reference center...
December 2016: Herz
https://www.readbyqxmd.com/read/27790495/acute-right-heart-failure-in-a-patient-with-right-heart-thrombus-and-pulmonary-thromboembolism
#17
Mohammad Mostafa Ansari-Ramandi, Samaneh Ansari-Ramandi, Nasim Naderi
Right Heart Thrombus (RiHT) management is really controversial, and appropriate guidelines are not present for the management. In patients referring with RiHT and Pulmonary Embolism (PE), there are three ways of managing these patients. Out of the three, one is thrombectomy, which is with high risk taking in mind the comorbidities these patients have. The other is using thrombolytic which, in many cases is contraindicated or with high risk. The other less effective way is full anticoagulation. It is really controversial to choose between these ways of management and no clear approach is present...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27767408/a-case-of-acute-pericarditis-following-intravenous-injection-of-crushed-morphine-tablets
#18
Ryan J Anderson, Bryan Corbett, Binh T Ly
A 37-year-old male presented with sharp, severe chest pain following seven days of intravenous injection of crushed morphine tablets. The chest pain was positional and pleuritic in nature and resolved with leaning forward. Work-up was notable for an ECG with inferior and anterolateral PR depressions as well as a CT chest with diffuse centrilobular nodules. Per radiology, the CT findings along with the patient's history were concerning for pulmonary granulomatosis from deposition of talc or some other foreign body...
November 2016: Journal of Psychoactive Drugs
https://www.readbyqxmd.com/read/27721936/role-of-radionuclide-imaging-for-diagnosis-of-device-and-prosthetic-valve-infections
#19
REVIEW
Jean-François Sarrazin, François Philippon, Mikaël Trottier, Michel Tessier
Cardiovascular implantable electronic device (CIED) infection and prosthetic valve endocarditis (PVE) remain a diagnostic challenge. Cardiac imaging plays an important role in the diagnosis and management of patients with CIED infection or PVE. Over the past few years, cardiac radionuclide imaging has gained a key role in the diagnosis of these patients, and in assessing the need for surgery, mainly in the most difficult cases. Both (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) and radiolabelled white blood cell single-photon emission computed tomography/computed tomography (WBC SPECT/CT) have been studied in these situations...
September 26, 2016: World Journal of Cardiology
https://www.readbyqxmd.com/read/27689518/a-retained-foreign-body-granuloma-mimicking-a-left-ventricular-psuedoanuerysm
#20
Davide Patrini, Mohamed Amirali Gulamhussein, Pasquale Pellegrino, Marianna Redaelli, Jonathan Pararajasingham, David Lawrence, Nikolaos Panagiotopoulos
INTRODUCTION: Gossypiboma, also referred to as a textiloma, gauzoma or muslinoma describe a mass in the body composed of a central cotton core surrounded by a foreign body reaction. It has an estimated incidence of 1/1000-1/10000 surgeries, occurring in the abdomen (56%), pelvis (18%) and least commonly the thorax (11%) and represents an unfortunate event for both the patient and the operating surgeon with severe liability implications. PRESENTATION OF CASE: We report a case of a 49-year-old male with Marfan Syndrome who was admitted to the cardiology department with a four day history of shortness of breath and associated dull, non-radiating chest pain...
September 23, 2016: International Journal of Surgery Case Reports
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