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https://www.readbyqxmd.com/read/28430740/low-dose-computed-tomography-scans-with-automatic-exposure-control-for-patients-of-different-ages-undergoing-cardiac-pet-ct-and-spect-ct
#1
Ching-Ching Yang, Bang-Hung Yang, Chun-Yuan Tu, Tung-Hsin Wu, Shu-Hsin Liu
PURPOSE: This study aimed to evaluate the efficacy of automatic exposure control (AEC) in order to optimize low-dose computed tomography (CT) protocols for patients of different ages undergoing cardiac PET/CT and single-photon emission computed tomography/computed tomography (SPECT/CT). METHODS: One PET/CT and one SPECT/CT were used to acquire CT images for four anthropomorphic phantoms representative of 1-year-old, 5-year-old and 10-year-old children and an adult...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28430739/downstream-indication-to-revascularization-following-hybrid-cardiac-pet-mri-preliminary-results
#2
Julien Priamo, Dionysos Adamopoulos, Oliver Rager, Angela Frei, Stephane Noble, David Carballo, Osman Ratib, René Nkoulou
BACKGROUND: Hybrid PET/MRI allows the acquisition of both fluorine-18-fluorodeoxyglucose (F-FDG) PET and cardiac magnetic resonance (CMR) during one session. Whether this will result in different referral to coronary revascularization (CR) is unknown. We compared this new hybrid method with all-nuclear/all-CMR methods in the assessment of viable myocardium and in downstream referral to CR. PATIENTS AND METHODS: Overall, 12 patients with rest perfusion defects on a single photon emission computed tomography (SPECT) were recruited for cardiac viability assessment using a PET/MRI device...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28429512/tailored-approach-for-management-of-ventricular-tachycardia-in-cardiac-sarcoidosis
#3
Sachin Yalagudri, Ngwe Zin Thu, Soumen Devidutta, Daljeet Saggu, Ajit Thachil, Sridevi Chennapragada, Calambur Narasimhan
INTRODUCTION: Treating ventricular tachycardia (VT) in patients with cardiac sarcoidosis (CS) is challenging as patients present in different phase of the disease (inflammatory, scar or sometimes both). A customized approach to treatment is required for better outcomes. We describe our experience in the management of VT in CS based on the phase of the disease. METHODS AND RESULTS: Patients were considered to have myocardial inflammation if there was an increased myocardial (18) Fluoro Deoxy Glucose (FDG) uptake in PET-CT scan of the chest (n=14)...
April 21, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28426162/motion-corrected-simultaneous-cardiac-positron-emission-tomography-and-coronary-mr-angiography-with-high-acquisition-efficiency
#4
Camila Munoz, Radhouene Neji, Gastão Cruz, Andrew Mallia, Sami Jeljeli, Andrew J Reader, Rene M Botnar, Claudia Prieto
PURPOSE: Develop a framework for efficient free-breathing simultaneous whole-heart coronary magnetic resonance angiography (CMRA) and cardiac positron emission tomography (PET) on a 3 Tesla PET-MR system. METHODS: An acquisition that enables nonrigid motion correction of both CMRA and PET has been developed. The proposed method estimates translational motion from low-resolution 2D MR image navigators acquired at each heartbeat and 3D nonrigid respiratory motion between different respiratory bins from the CMRA data itself...
April 20, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28418949/initial-experience-with-simultaneous-18f-fdg-pet-mri-in-the-evaluation-of-cardiac-sarcoidosis-and-myocarditis
#5
Kate Hanneman, Michael Kadoch, Henry H Guo, Mehran Jamali, Andrew Quon, Andrei Iagaru, Robert Herfkens
PURPOSE: The purpose of this study was to compare combined PET/MRI with PET/CT and cardiac MRI in the evaluation of cardiac sarcoidosis and myocarditis. METHODS: Ten patients (4 men and 6 women; 56.1 ± 9.6 years old) were prospectively enrolled for evaluation of suspected cardiac sarcoidosis or myocarditis. Written informed consent was obtained. Following administration of 9.9 ± 0.9 mCi F-FDG, patients underwent standard cardiac PET/CT followed by combined PET/MRI using a simultaneous 3-T scanner...
April 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28408703/accuracy-of-rb-82-pet-ct-mpi-with-regadenoson-stress-including-three-year-clinical-outcomes-reporting-present-pet-ct-regadenoson-stress-experience-at-the-va-north-texas
#6
Michael Brophey, Irfan Farukhi, Rosinda Castanon, Rosinda DeLaPena, Ledjona Bradshaw, Subhash Banerjee
The purpose of this study was to determine the clinical accuracy of Rb-82 PET/CT MPI when performed with regadenoson stress in a VA population of patients. Methods: The initial cohort of 480 patients undergoing vasodilator PET MPI with regadenoson stress at our institution from September 2009 through July 2010 were closely tracked for short term outcomes based on correlation with invasive coronary catheterization. Long term outcomes were determined by major adverse cardiac event rates (MACE) based on data extraction from the electronic medical record and grouped by SSS for a three year period...
April 13, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/28401505/cardiac-applications-of-pet-mr
#7
REVIEW
Peter J Bergquist, Michael S Chung, Anja Jones, Mark A Ahlman, Charles S White, Jean Jeudy
PURPOSE OF REVIEW: The purpose of this study was to provide an overview of the clinical applications of PET-MR in the setting of cardiac imaging with emphasis on specific scenarios where both techniques together provided added information. RECENT FINDINGS: Synergy of cardiac PET and MR fusion may hold similar promise eliminating ionizing radiation and improving tissue contrast. Future development of new hybrid scanners, use of new imaging tracers, and clinical applications are significant factors which will influence its use...
May 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28397369/incidental-primary-mediastinal-choriocarcinoma-diagnosed-by-endobronchial-ultrasound-guided-fine-needle-aspiration-in-a-patient-presenting-with-transient-ischemic-attack-and-stroke
#8
Ivo M B Francischetti, Antonio Cajigas, Mark Suhrland, Joaquim M Farinhas, Samer Khader
We describe a case of a 41-year old male patient with no significant prior medical history who presents with symptoms of Transient Ischemic Attack and stroke. Magnetic Resonance Imaging (MRI) of the brain identified areas of ischemia in the left side, and angiography showed occlusion of the left Medial Cerebral Artery (MCA). Cardiac Transthoracic Echocardiogram (TTE) for stroke evaluation incidentally noted a mediastinal abnormality leading to cancer work-up. Computer Tomography (CT) and (18) F-fluorodeoxyglucose (FDG) PET-CT scan of the chest incidentally revealed an avid 6 cm paraesophagial/subcarinal mass...
April 11, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28397181/pet-should-replace-spect-in-cardiac-imaging-for-diagnosis-and-risk-assessment-of-patients-with-known-or-suspected-cad-pro
#9
Jamshid Maddahi, René R Sevag Packard
No abstract text is available yet for this article.
April 10, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28390532/cardiac-applications-of-pet-mr-imaging
#10
REVIEW
Jeffrey M C Lau, Richard Laforest, Felix Nensa, Jie Zheng, Robert J Gropler, Pamela K Woodard
Simultaneous acquisition PET/MR imaging combines the anatomic capabilities of cardiac MR imaging with quantitative capabilities of both PET and MR imaging. Cardiac PET/MR imaging has the potential not only to assess cardiac tumors but also to provide thorough assessment of myocardial ischemia, infarction, and function and specific characterization of cardiomyopathies, such as cardiac sarcoid. In this article, the authors start with a discussion of the technical challenges specific to cardiovascular PET/MR imaging followed by a discussion of the use of PET/MR imaging in various cardiovascular conditions...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390527/magnetic-resonance-derived-improvements-in-pet-imaging
#11
REVIEW
David S Lalush
Simultaneous PET-MR imaging improves deficiencies in PET images. The primary areas in which magnetic resonance (MR) has been applied to guide PET results are in correction for patient motion and in improving the effects of PET resolution and partial volume averaging. MR-guided motion correction of PET has been applied to respiratory, cardiac, and gross body movements and shown to improve lesion detectability and contrast. Partial volume correction or resolution improvement of PET governed by MR imaging anatomic information improves visualization of structures and quantitative accuracy...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390040/incidental-extra-cardiac-findings-on-13-nh3-myocardial-perfusion-pet-ct
#12
EDITORIAL
Andrei Iagaru
No abstract text is available yet for this article.
April 7, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28390039/incidental-extra-cardiac-findings-on-13-n-ammonia-myocardial-perfusion-pet-ct
#13
H Kan, F M van der Zant, M Wondergem, R J J Knol
BACKGROUND: The objective of this study was to describe the prevalence of incidental extra-cardiac findings (IECFs) on myocardial perfusion PET/CTs and the prevalence of potentially clinically relevant and clinically irrelevant IECFs, as well as detection rate of previously unknown malignancies. METHODS AND RESULTS: From September 2013 until February 2016, a total of 1397 consecutive patients referred for the evaluation of possible ischemia by (13)NH3 PET/CT were prospectively included in a database...
April 7, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28378112/automatic-determination-of-cardiovascular-risk-by-ct-attenuation-correction-maps-in-rb-82-pet-ct
#14
Ivana Išgum, Bob D de Vos, Jelmer M Wolterink, Damini Dey, Daniel S Berman, Mathieu Rubeaux, Tim Leiner, Piotr J Slomka
BACKGROUND: We investigated fully automatic coronary artery calcium (CAC) scoring and cardiovascular disease (CVD) risk categorization from CT attenuation correction (CTAC) acquired at rest and stress during cardiac PET/CT and compared it with manual annotations in CTAC and with dedicated calcium scoring CT (CSCT). METHODS AND RESULTS: We included 133 consecutive patients undergoing myocardial perfusion (82)Rb PET/CT with the acquisition of low-dose CTAC at rest and stress...
April 4, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28377468/positron-emission-tomography-and-single-photon-emission-computed-tomography-imaging-in-the-diagnosis-of-cardiac-implantable-electronic-device-infection-a-systematic-review-and-meta-analysis
#15
Daniel Juneau, Mohammad Golfam, Samir Hazra, Lionel S Zuckier, Shady Garas, Calum Redpath, Jordan Bernick, Eugene Leung, Sharon Chih, George Wells, Rob S B Beanlands, Benjamin J W Chow
BACKGROUND: The use of cardiac implantable electronic devices (CIED) is increasing, and their associated infections result in significant morbidity and mortality. The introduction of better cardiac imaging techniques could be useful for diagnosing this condition and guiding therapy. Our objective was to systematically assess the diagnostic accuracy of Fluor-18-fluorodeoxyglucose positron emission tomography and computed tomography, labeled leukocyte scintigraphy (LS), and Gallium-67 citrate scintigraphy for the diagnosis of CIED infection...
April 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28375837/cardiac-and-aortic-involvement-in-patients-with-polymyalgia-rheumatica-a-study-with-echocardiography-and-fdg-pet-ct
#16
Cecilia De Lorenzi, Gian Marco Rosa, Dario Camellino, Silvia Morbelli, Ulrico Dorighi, Giovanni Masoero, Gianmario Sambuceti, Claudio Brunelli, Marco Amedeo Cimmino
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April 4, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28364177/magnetic-resonance-imaging-for-characterizing-myocardial-diseases
#17
REVIEW
Maythem Saeed, Hui Liu, Chang-Hong Liang, Mark W Wilson
The National Institute of Health defined cardiomyopathy as diseases of the heart muscle. These myocardial diseases have different etiology, structure and treatment. This review highlights the key imaging features of different myocardial diseases. It provides information on myocardial structure/orientation, perfusion, function and viability in diseases related to cardiomyopathy. The standard cardiac magnetic resonance imaging (MRI) sequences can reveal insight on left ventricular (LV) mass, volumes and regional contractile function in all types of cardiomyopathy diseases...
March 31, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28357026/novel-noninvasive-nuclear-medicine-imaging-techniques-for-cardiac-inflammation
#18
REVIEW
Malte Kircher, Constantin Lapa
PURPOSE OF REVIEW: Inflammation is a key player in a wide range of cardiovascular and myocardial diseases. Given the numerous implications of inflammatory processes in disease initiation and progression, functional imaging modalities including positron emission tomography (PET) represent valuable diagnostic, prognostic, and monitoring tools in patient management. Since increased glucose metabolism is a hallmark of inflammation, PET using the radiolabeled glucose analog [(18)F]-2-deoxy-2-fluoro-d-glucose (FDG) is the mainstay diagnostic test for nuclear imaging of (cardiac) inflammation...
2017: Current Cardiovascular Imaging Reports
https://www.readbyqxmd.com/read/28343598/incremental-prognostic-value-of-global-longitudinal-strain-and-18f-fludeoxyglucose-positron-emission-tomography-in-patients-with-systemic-sarcoidosis
#19
Brett W Sperry, Ahmed Ibrahim, Kazuaki Negishi, Tomoko Negishi, Parag Patel, Zoran B Popović, Daniel Culver, Richard Brunken, Thomas H Marwick, Balaji Tamarappoo
In independent studies, abnormal global longitudinal strain (GLS) and myocardial inflammation or scar detected by 18F-fludeoxyglucose positron emission tomography (FDG-PET) are associated with poor prognosis among patients with high likelihood for cardiac sarcoidosis. However, commonly used imaging modalities have not been evaluated in the same population. Our goals were to examine the relation between GLS and FDG-PET, and to evaluate the incremental prognostic value of these imaging techniques for predicting major adverse cardiac events (MACE) in patients suspected to have cardiac sarcoidosis...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28330738/graft-infection-after-a-bentall-procedure-a-case-series-and-systematic-review-of-the-literature
#20
I Machelart, C Greib, G Wirth, F Camou, N Issa, J F Viallard, J L Pellegrin, E Lazaro
INTRODUCTION: The Bentall procedure is a cardiac surgery involving graft replacement of the aortic valve, aortic root and ascending aorta. Graft infection after Bentall's procedure (BGI) is infrequent but severe, and often difficult to diagnose and treat. PATIENTS AND METHODS: A retrospective cohort study was performed using the Bordeaux endocarditis database of adult patients admitted to the Bordeaux University Medical Hospital for BGI between 2008 and 2014. Published case reports were identified in the literature...
March 7, 2017: Diagnostic Microbiology and Infectious Disease
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