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Cardiac SPECT

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https://www.readbyqxmd.com/read/29782596/diagnostic-performance-of-hybrid-cardiac-spect-ct-imaging-for-patients-with-takotsubo-cardiomyopathy
#1
Yasuro Sugihara, Yoshimitsu Fukushima, Shin-Ichiro Kumita, Hitoshi Takano, Wataru Shimizu
Background: The diagnostic performance of SPECT-only imaging for takotsubo cardiomyopathy (TC) is limited due to the lack of coronary artery distribution information. The aim of this study was to evaluate the diagnostic performance of hybrid cardiac SPECT/CT for patients with TC or acute coronary syndrome (ACS). Methods: Twenty-two patients with apical ballooning left ventricular (LV) dysfunction who underwent cardiac perfusion SPECT using 99m Tc-methoxy-isobutyl-isonitrile (MIBI), cardiac fatty-acid metabolism SPECT using 123 I-beta-methyl-P-iodophenyl-pentadecanoic acid (BMIPP), cardiac CT, and hybrid cardiac SPECT/CT imaging were analyzed...
2018: Eur J Hybrid Imaging
https://www.readbyqxmd.com/read/29756381/myocardial-multilayer-strain-does-not-provide-additional-value-for-detection-of-myocardial-viability-assessed-by-spect-imaging-over-and-beyond-standard-strain
#2
Elisabeth Orloff, Pauline Fournier, Frédéric Bouisset, Thomas Moine, Maxime Cournot, Meyer Elbaz, Didier Carrié, Michel Galinier, Olivier Lairez, Thomas Cognet
BACKGROUND: The aim of this study was to evaluate the value of multilayer strain analysis to the assessment of myocardial viability (MV) through the comparison of both speckle tracking echocardiography and single-photon emission computed tomography (SPECT) imaging. We also intended to determine which segmental longitudinal strain (LS) cutoff value would be optimal to discriminate viable myocardium. METHODS: We included 47 patients (average age: 61 ± 11 years) referred to our cardiac imaging center for MV evaluation...
May 14, 2018: Echocardiography
https://www.readbyqxmd.com/read/29751831/intravenous-injection-of-allogeneic-umbilical-cord-derived-multipotent-mesenchymal-stromal-cells-reduces-the-infarct-area-and-ameliorates-cardiac-function-in-a-porcine-model-of-acute-myocardial-infarction
#3
Meikuang Lim, Weiqiang Wang, Lu Liang, Zhi-Bo Han, Zongjin Li, Jie Geng, Meng Zhao, Honghong Jia, Jie Feng, Zhe Wei, Baoquan Song, Jiemin Zhang, Jun Li, Tianwen Liu, Fan Wang, Ting Li, Jianming Li, Yihu Fang, Jianhua Gao, Zhongchao Han
BACKGROUND: Multipotent mesenchymal stromal cell (MSC) therapy has been widely recognized as a feasible strategy for regenerating injured myocardial tissue. However, little is known about the efficacy of intravenous injection of allogeneic umbilical cord (UC) MSCs in preclinical models of porcine myocardial infarction. METHODS: Different dosages of allogeneic UC-MSCs or the vehicle [phosphate-buffered saline (PBS)] were delivered intravenously into an acute myocardial infarction (AMI) porcine model twice after coronary ligation...
May 11, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29720565/implementation-of-a-cardiac-pet-stress-program-comparison-of-outcomes-to-the-preceding-spect-era
#4
Stacey Knight, David B Min, Viet T Le, Kent G Meredith, Ritesh Dhar, Santanu Biswas, Kurt R Jensen, Steven M Mason, Jon-David Ethington, Donald L Lappe, Joseph B Muhlestein, Jeffrey L Anderson, Kirk U Knowlton
BACKGROUND: Cardiac positron emission testing (PET) is more accurate than single photon emission computed tomography (SPECT) at identifying coronary artery disease (CAD); however, the 2 modalities have not been thoroughly compared in a real-world setting. We conducted a retrospective analysis of 60-day catheterization outcomes and 1-year major adverse cardiovascular events (MACE) after the transition from a SPECT- to a PET-based myocardial perfusion imaging (MPI) program. METHODS: MPI patients at Intermountain Medical Center from January 2011-December 2012 (the SPECT era, n = 6,777) and January 2014-December 2015 (the PET era, n = 7,817) were studied...
May 3, 2018: JCI Insight
https://www.readbyqxmd.com/read/29698545/the-role-of-molecular-imaging-in-assessing-degenerative-parkinsonism-an-updated-review
#5
Nicolas Nicastro, Valentina Garibotto, Pierre R Burkhard
Diagnosing degenerative forms of parkinsonism still relies on a thorough clinical assessment, which in Parkinson's disease involves the presence of an asymmetric bradykinesia with rest tremor and/or rigidity that respond substantially to levodopa. Conversely, atypical forms, including multiple system atrophy, progressive supranuclear palsy and corticobasal degeneration, exhibit additional features (cerebellar or pyramidal signs, early postural instability), a poor response to dopamine replacement therapy and a bad prognosis...
April 26, 2018: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29696486/iodine-123-metaiodobenzylguanidine-cardiac-spect-imaging-in-the-qualification-of-heart-failure-patients-for-icd-implantation
#6
EDITORIAL
Anna Teresińska
No abstract text is available yet for this article.
April 25, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29696485/relationship-between-microvascular-changes-autonomic-denervation-and-myocardial-fibrosis-in-chagas-cardiomyopathy-evaluation-by-mri-and-spect-imaging
#7
Gustavo Canavaci Barizon, Marcus Vinicius Simões, André Schmidt, Leonardo Pippa Gadioli, Luiz Otávio Murta Junior
BACKGROUND: The relationship between microvasculopathy, autonomic denervation, and myocardial fibrosis, in Chagas cardiomyopathy is incompletely understood. The aim of this study was to explore the relative extent and anatomic distribution of myocardial hypoperfusion, autonomic denervation, and myocardial scarring using Single-Photon Emission Computerized Tomography (SPECT) imaging and Magnetic Resonance Imaging (MRI). METHODS: Thirteen patients with Chagas disease all had Iodine-123-metaiodobenzylguanidine (MIBG) SPECT, 99m Tc-Sestamibi (MIBI) rest-stress SPECT, and gadolinium late enhancement MRI imaging within a 2-month interval...
April 25, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29687292/sex-and-age-differences-in-the-association-of-heart-rate-responses-to-adenosine-and-myocardial-ischemia-in-patients-undergoing-myocardial-perfusion-imaging
#8
Catherine Gebhard, Michael Messerli, Christine Lohmann, Valerie Treyer, Susan Bengs, Dominik C Benz, Andreas A Giannopoulos, Ken Kudura, Elia von Felten, Moritz Schwyzer, Oliver Gaemperli, Christoph Gräni, Aju P Pazhenkottil, Ronny R Buechel, Philipp A Kaufmann
BACKGROUND: In light of growing cardiovascular mortality rates observed in young women, sexual dimorphism in cardiac autonomic nervous control is gaining increasing attention. Heart rate responses to adenosine mirror autonomic activity and may carry important prognostic information. METHODS AND RESULTS: Hemodynamic changes during adenosine stress were retrospectively analysed in a propensity-matched cohort of 1932 consecutive patients undergoing myocardial perfusion single-photon-emission computed tomography (MPI-SPECT)...
April 23, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29687207/diagnostic-accuracy-of-bone-scintigraphy-in-the-assessment-of-cardiac-transthyretin-related-amyloidosis-a-bivariate-meta-analysis
#9
Giorgio Treglia, Andor W J M Glaudemans, Francesco Bertagna, Bouke P C Hazenberg, Paola A Erba, Raffaele Giubbini, Luca Ceriani, John O Prior, Luca Giovanella, Riemer H J A Slart
PURPOSE: Cardiac transthyretin-related amyloidosis (ATTR) is a progressive and fatal cardiomyopathy. The diagnosis of this disease is frequently delayed or missed due to the limited specificity of echocardiography. An increasing amount of data in the literature demonstrate the ability of bone scintigraphy with bone-seeking radiopharmaceuticals to detect myocardial amyloid deposits, in particular in patients with ATTR. Therefore we performed a systematic review and bivariate meta-analysis of the diagnostic accuracy of bone scintigraphy in patients with suspected cardiac ATTR...
April 23, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29679508/motion-compensated-image-reconstruction-vs-post-reconstruction-correction-in-respiratory-binned-spect-with-standard-and-reduced-dose-acquisitions
#10
Chao Song, Yongyi Yang, Wenyuan Qi, Miles N Wernick, P Hendrik Pretorius, Michael A King
PURPOSE: Cardiac perfusion images in single photon emission computed tomography (SPECT) can suffer from respiratory motion blur. We investigated a reconstruction approach for correcting respiratory motion in respiratory-binned acquisitions and assessed the benefit of this approach in both standard dose and reduced dose. METHODS: We modeled the acquired data from different respiratory bins by a joint probability distribution which was parameterized with respect to a common reference bin...
April 21, 2018: Medical Physics
https://www.readbyqxmd.com/read/29657046/impact-of-cardiac-hybrid-imaging-guided-patient-management-on-clinical-long-term-outcome
#11
Dominik C Benz, Lara Gaemperli, Christoph Gräni, Elia von Felten, Andreas A Giannopoulos, Michael Messerli, Ronny R Buechel, Oliver Gaemperli, Aju P Pazhenkottil, Philipp A Kaufmann
BACKGROUND: Although randomized trials have provided evidence for invasive fractional flow reserve to guide revascularization, evidence for non-invasive imaging is less well established. The present study investigated whether hybrid coronary computed tomography (CCTA)/single photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) can identify patients who benefit from early revascularization compared to medical therapy. METHODS: This retrospective study consists of 414 patients referred for evaluation of known or suspected coronary artery disease (CAD) with CCTA/SPECT hybrid imaging...
June 15, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29652747/the-incremental-clinical-value-of-cardiac-hybrid-spect-cta-imaging-in-coronary-artery-disease
#12
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/29651017/effects-of-different-doses-of-granulocyte-colony-stimulating-factor-mobilization-therapy-on-ischemic-cardiomyopathy
#13
Rongchong Huang, Haichen Lv, Kang Yao, Lei Ge, Zhishuai Ye, Huaiyu Ding, Yiqi Zhang, Hao Lu, Zheyong Huang, Shuning Zhang, Yunzeng Zou, Junbo Ge
G-CSF mobilization might be beneficial to ICM, but the relationship between effect/safety and the dosage of G-CSF remains unclear. In this study, 24 pigs were used to build ICM models and were randomized into four groups. Four weeks later, different dosages of G-CSF were given daily by subcutaneous injection for 5 days. Another 4 weeks later, all the animals were sacrificed. Electrocardiography, coronary arteriography, left ventriculography, transthoracic echocardiography, cardiac MRI, and SPECT, histopathologic analysis, and immunohistochemistry techniques were used to evaluate left ventricular function and myocardial infarct size...
April 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29594915/role-of-cardiac-123-i-mibg-imaging-in-predicting-arrhythmic-events-in-stable-chronic-heart-failure-patients-with-an-icd
#14
Giuseppe De Vincentis, Viviana Frantellizzi, Francesco Fedele, Alessio Farcomeni, Paola Scarparo, Nicolò Salvi, Danilo Alunni Fegatelli, Massimo Mancone, Derk O Verschure, Hein J Verberne
BACKGROUND: Despite therapeutic improvement, the prognosis of chronic heart failure (CHF) remains unfavorable partly due to arrhythmia and sudden cardiac death (SCD). This prospective study evaluated myocardial123 I-meta-iodobenzylguanidine (123 I-mIBG) scintigraphy as a predictor of arrhythmic events (AE) in CHF patients. METHODS: 170 CHF patients referred for implantable cardioverter-defibrillator (ICD) implantation for both primary and secondary prevention were enrolled...
March 28, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29580695/vasodilator-stress-single-photon-emission-computed-tomography-or-contrast-stress-echocardiography-association-with-hard-cardiac-events-in-suspected-coronary-artery-disease
#15
Nicola Gaibazzi, Carmine Siniscalchi, Thomas R Porter, Antonio Crocamo, Manuela Basaglia, Francesca Boffetti, Valentina Lorenzoni
BACKGROUND: We compared the long-term outcome of subjects without prior cardiac disease who underwent either vasodilator single-photon emission computed tomography (SPECT) or contrast stress-echocardiography (cSE) for suspected coronary artery disease (CAD). METHODS: Subjects who underwent vasodilator SPECT or cSE between 2008 and 2012 for suspected CAD but no history of cardiac disease were included. We retrospectively compared the association of each method with combined all-cause death and nonfatal myocardial infarction and their positive predictive value (PPV) for angiographically obstructive CAD...
March 23, 2018: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29577764/-immunoadsorption-in-a-patient-with-dilated-cardiomyopathy-the-first-case-in-hungary
#16
Pál Soltész, Melinda Vass, Ágnes Diószegi, Ivetta Mányiné Siket, Ildikó Garai, Csaba Kun, Orsolya Bene, Attila Kertész, István Édes
Dilated cardiomyopathy is the main cause of heart transplantation. The etiology is unknown in almost half of the cases. Many cardiac specific antibodies have been identified till now which can cause decreased cardiac function, ventricular tachycardia or sudden heart death. The prognosis of DCM is poor despite the development of medical treatment. Immunoadsorption is hopeful since, with the removal of antibodies, cardiac function and NYHA class can improve and LVAD/heart transplantation-free survival can be prolonged...
April 2018: Orvosi Hetilap
https://www.readbyqxmd.com/read/29574767/patient-specific-estimation-of-spatially-variant-image-noise-for-a-pinhole-cardiac-spect-camera
#17
Sarah G Cuddy-Walsh, R Glenn Wells
PURPOSE: New single photon emission computed tomography (SPECT) cameras using fixed pinhole collimation are increasingly popular. Pinhole collimators are known to have variable sensitivity with distance and angle from the pinhole aperture. It follows that pinhole SPECT systems will also have spatially-variant sensitivity and hence spatially-variant image noise. The objective of this study was to develop and validate a rapid method for analytically estimating a map of the noise magnitude in a reconstructed image using data from a single clinical acquisition...
March 25, 2018: Medical Physics
https://www.readbyqxmd.com/read/29574494/motion-correction-and-its-impact-on-absolute-myocardial-blood-flow-measures-with-pet
#18
REVIEW
Marina Piccinelli, John R Votaw, Ernest V Garcia
PURPOSE OF REVIEW: Motion artifacts, due to cardiac and respiratory cycles, myocardial cardiac creep, or gross patient movements, have been extensively investigated in the context of relative myocardial perfusion imaging with SPECT and PET. These movements have been identified as a major source of errors in image quantification and diagnosis. Recently, as dynamic PET quantification for myocardial blood flow assessment has entered clinical practice, similar questions have arisen on the impact of motion on final blood flow values...
March 24, 2018: Current Cardiology Reports
https://www.readbyqxmd.com/read/29556943/imaging-the-myocardial-ischemic-cascade
#19
REVIEW
Arthur E Stillman, Matthijs Oudkerk, David A Bluemke, Menko Jan de Boer, Jens Bremerich, Ernest V Garcia, Matthias Gutbertlet, Pim van der Harst, W Gregory Hundley, Michael Jerosch-Herold, Dirkjan Kuijpers, Raymond Y Kwong, Eike Nagel, Stamatios Lerakis, John Oshinski, Jean-François Paul, Riemer H J A Slart, Vinod Thourani, Rozemarijn Vliegenthart, Bernd J Wintersperger
Non-invasive imaging plays a growing role in the diagnosis and management of ischemic heart disease from its earliest manifestations of endothelial dysfunction to myocardial infarction along the myocardial ischemic cascade. Experts representing the North American Society for Cardiovascular Imaging and the European Society of Cardiac Radiology have worked together to organize the role of non-invasive imaging along the framework of the ischemic cascade. The current status of non-invasive imaging for ischemic heart disease is reviewed along with the role of imaging for guiding surgical planning...
March 19, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29542015/prediction-of-cardiac-death-after-adenosine-myocardial-perfusion-spect-based-on-machine-learning
#20
David Haro Alonso, Miles N Wernick, Yongyi Yang, Guido Germano, Daniel S Berman, Piotr Slomka
BACKGROUND: We developed machine-learning (ML) models to estimate a patient's risk of cardiac death based on adenosine myocardial perfusion SPECT (MPS) and associated clinical data, and compared their performance to baseline logistic regression (LR). We demonstrated an approach to visually convey the reasoning behind a patient's risk to provide insight to clinicians beyond that of a "black box." METHODS: We trained multiple models using 122 potential clinical predictors (features) for 8321 patients, including 551 cases of subsequent cardiac death...
March 14, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
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