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Cardiac SPECT

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https://www.readbyqxmd.com/read/28540215/myocardial-flow-reserve-mfr-with-positron-emission-tomography-pet-computed-tomography-ct-clinical-impact-in-diagnosis-and-prognosis
#1
REVIEW
Maria Cecilia Ziadi
In recent years, radionuclide myocardial perfusion imaging (MPI) using positron emission tomography/computed tomography (PET/CT) has emerged as a robust tool for the diagnosis, risk stratification and management of patients with known or established coronary artery disease (CAD). Cardiac PET/CT imaging affords key advantages compared to single photon emission computed tomography (SPECT) that encompass: (I) improved diagnostic accuracy; (II) decreased radiation exposure due to the utilization of short-lived radiopharmaceuticals, and importantly; (III) the ability to quantify noninvasively myocardial blood flow (MBF) in absolute terms, that is in ml per minute per gram of tissue...
April 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28538394/123i-ioflupane-brain-spect-and-123i-mibg-cardiac-planar-scintigraphy-combined-use-in-uncertain-parkinsonian-disorders
#2
Susanna Nuvoli, Angela Spanu, Maria Rita Piras, Antonio Nieddu, Aldo Mulas, Gaia Rocchitta, Grazia Galleri, Pier Andrea Serra, Giuseppe Madeddu
We evaluated the clinical usefulness of the combined use of I-ioflupane brain single photon emission computed tomography (SPECT) and I-metaiodobenzylguanidine (MIBG) cardiac scintigraphy in discriminating uncertain parkinsonism with vascular lesions in striatal nuclei at magnetic resonance imaging (MRI). Forty-three consecutive patients with uncertain parkinsonism and vascular lesions at MRI in striatal nuclei were retrospectively evaluated; the uncertain differential diagnosis was between Parkinson's disease and vascular parkinsonism (PD/VP) in 22 patients, between PD and other neurodegenerative parkinsonism (PD/PS) in 11 patients and between Lewy body dementia and Alzheimer disease (LBD/AD) in the remaining 10 cases...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28537039/investigation-of-dose-reduction-in-cardiac-perfusion-spect-via-optimization-and-choice-of-the-image-reconstruction-strategy
#3
Albert Juan Ramon, Yongyi Yang, P Hendrik Pretorius, Piotr J Slomka, Karen L Johnson, Michael A King, Miles N Wernick
BACKGROUND: We investigated the extent to which the administered dose (activity) level can be reduced without sacrificing diagnostic accuracy for three reconstruction strategies for SPECT-myocardial perfusion imaging (MPI). METHODS: We optimized the parameters of the three reconstruction strategies for perfusion-defect detection over a range of simulated administered dose levels using a set of hybrid studies (derived from 190 subjects) consisting of clinical SPECT-MPI data modified to contain realistic simulated lesions...
May 23, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28508270/the-impact-of-combined-cardiopulmonary-exercise-testing-and-spect-myocardial-perfusion-imaging-on-downstream-evaluation-and-management
#4
Georgios Christopoulos, John Bois, Thomas G Allison, Martin Rodriguez-Porcel, Panithaya Chareonthaitawee
OBJECTIVE: The diagnostic yield of combined cardiopulmonary exercise testing (CPET) and myocardial perfusion imaging (MPI) in patients referred for stress testing has received limited study. METHODS: We evaluated consecutive patients who underwent combined CPET-MPI at a single tertiary referral center between 2011 and 2015. An abnormal CPET was defined as any of the following: reduced oxygen consumption, cardiac output impairment, or pulmonary impairment. Normal MPI was defined as the absence of resting or stress perfusion defect...
May 15, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28500540/prediction-of-sudden-cardiac-death-in-patients-with-chronic-heart-failure-by-regional-washout-rate-in-cardiac-mibg-spect-imaging
#5
Hironori Yamamoto, Takahisa Yamada, Shunsuke Tamaki, Takashi Morita, Yoshio Furukawa, Yusuke Iwasaki, Masato Kawasaki, Atsushi Kikuchi, Takumi Kondo, Tatsuhisa Ozaki, Masahiro Seo, Yoshihiro Sato, Iyo Ikeda, Eiji Fukuhara, Makoto Abe, Jun Nakamura, Masatake Fukunami
BACKGROUND: The sympathetic nervous system provides an important trigger for major arrhythmic events through regional heterogeneity of sympathetic activity, which could be evaluated by SPECT imaging as the regional MIBG washout rate (WR). There is little information available on the prognostic value of regional WR in SPECT imaging for the prediction of sudden cardiac death (SCD) in patients with chronic heart failure (CHF). METHODS: We studied 73 CHF outpatients with LVEF < 40%...
May 12, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28493201/nuclear-cardiology-practice-in-spain
#6
Amelia Jimenez-Heffernan, Santiago Aguade-Bruix, Irene Casans-Tormo
BACKGROUND: In Spain, nuclear cardiology (NC) procedures represent the second most frequently performed studies in nuclear medicine (NM) centers. METHODS: The NC Working Group of the Spanish Society of Nuclear Medicine and Molecular Imaging invited NM departments across the country to answer an online questionnaire regarding 2014 activity. RESULTS: Data on 40,161 patients from 42 centers were collected. The responding public centers served 39% of Spain´s population...
May 10, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28473616/mini-review-on-cardiac-metabolic-imaging-current-imaging-modalities-and-future-perspectives
#7
Tineke van de Weijer, Elisabeth Helena Maria Paiman, Hildo J Lamb
In this review, current imaging techniques and their future perspectives in the field of cardiac metabolic imaging in humans are discussed. This includes a range of non-invasive imaging techniques allowing a detailed investigation of cardiac metabolism in health and disease. The main imaging modalities discussed are Magnetic Resonance Spectroscopy (MRS) techniques for determination of metabolite content (triglycerides, glucose, ATP, phosphocreatine and so on), MRI (for myocardial perfusion) Single Photon Emession Computed Tomography (SPECT) and Positron Emission Tomography (PET) for quantitation of perfusion and substrate uptake...
May 4, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28469688/significance-of-abnormal-myocardial-perfusion-scans-in-candidates-for-orthotopic-liver-transplantation
#8
Atefe Esmaili, Saeed Farzanefar, Alireza Emami-Ardakani, Mehrshad Abbasi
Background: The implications of cardiac risk stratification before orthotopic liver transplantation (OLT) are not well established. We studied the usefulness of myocardial perfusion imaging (MPI) in this scenario. Methods: MPI data of 24 patients (9 females), candidates of OLT, were collected. They underwent MPI as part of their preoperative risk assessment. MPIs were interpreted by 2 nuclear physicians, who had access to clinical data, scan, and semi-quantification results (i.e., quantitative perfusion single-photon emission tomography (SPECT) [QPS] and quantitative gated SPECT [QGS])...
January 2017: Journal of Tehran Heart Center
https://www.readbyqxmd.com/read/28462467/the-effect-of-ct-based-attenuation-correction-on-the-automatic-perfusion-score-of-myocardial-perfusion-imaging-using-a-dedicated-cardiac-solid-state-czt-spect-ct
#9
John A Kennedy, Yafim Brodov, Adam L Weinstein, Ora Israel, Alex Frenkel
BACKGROUND: Data regarding cardiac cadmium-zinc-telluride (CZT)-specific augmented databases and their impact on CT-based attenuation correction (AC) perfusion scores in myocardial perfusion imaging (MPI) were obtained on a multiple-pinhole CZT SPECT/CT. METHODS AND RESULTS: Summed stress (SSS) and rest scores (SRS) were measured using automated software in three independent patient groups: group 1 (n = 80) underwent MPI on both CZT and conventional sodium iodide (NaI) devices, group 2 (n = 80) with low coronary artery disease likelihood and normal MPI provided reference CZT databases; and group 3 (n = 152) served to compare AC and non-AC (NAC) scores on CZT...
May 1, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28458600/diagnostic-performance-of-coronary-ct-angiography-stress-dual-energy-ct-perfusion-and-stress-perfusion-single-photon-emission-computed-tomography-for-coronary-artery-disease-comparison-with-combined-invasive-coronary-angiography-and-stress-perfusion-cardiac
#10
Hyun Woo Chung, Sung Min Ko, Hweung Kon Hwang, Young So, Jeong Geun Yi, Eun Jeong Lee
OBJECTIVE: To investigate the diagnostic performance of coronary computed tomography angiography (CCTA), stress dual-energy computed tomography perfusion (DE-CTP), stress perfusion single-photon emission computed tomography (SPECT), and the combinations of CCTA with myocardial perfusion imaging (CCTA + DE-CTP and CCTA + SPECT) for identifying coronary artery stenosis that causes myocardial hypoperfusion. Combined invasive coronary angiography (ICA) and stress perfusion cardiac magnetic resonance (SP-CMR) imaging are used as the reference standard...
May 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28456317/long-term-prognostic-value-of-appropriate-myocardial-perfusion-imaging
#11
Angela S Koh, Weng Kit Lye, Shaw Yang Chia, Jennifer Salunat-Flores, Ling L Sim, Felix Y J Keng, Ru San Tan, Terrance S J Chua
Appropriate use criteria (AUC) for single-photon emission computed tomography myocardial perfusion images (SPECT-MPIs) were developed to address the growth of cardiac imaging studies. Long-term prognostic value of AUC in SPECT-MPI has not been tested in existing cohorts. We sought to determine the long-term prognostic value of MPI classified as appropriate. AUC was evaluated in a prospectively designed cohort of patients who underwent clinically indicated MPI. MPI studies were classified based on 2009 AUC for SPECT-MPI...
March 29, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28452797/a-national-survey-of-computed-tomography-doses-in-hybrid-pet-ct-and-spect-ct-examinations-in-the-uk
#12
Gareth R Iball, Natalie A Bebbington, Maria Burniston, Sue Edyvean, Louise Fraser, Peter Julyan, Nasreen Parkar, Tim Wood
OBJECTIVES: The aim of this study was to conduct a nationwide survey of computed tomography (CT) doses for a wide range of PET-CT and single photon emission computed tomography-computed tomography (SPECT-CT) imaging procedures, with the aim of generating proposed UK national diagnostic reference levels (NDRLs). METHODS: CT protocol and dosimetry data for three PET-CT and seven SPECT-CT examinations were gathered from centres across the UK. Data were divided according to CT purpose (attenuation correction, localization or diagnostic) and third quartile values of scanner average dose metrics were used to generate suggested NDRLs for a range of examination and CT purpose combinations...
June 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28452005/dual-isotope-cardiac-spect-the-twin-peaks-saga-in-nuclear-cardiology
#13
EDITORIAL
C Marcassa, O Zoccarato
No abstract text is available yet for this article.
April 27, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28450561/prognostic-value-of-myocardial-perfusion-imaging-with-czt-spect-camera-in-patients-suspected-for-coronary-artery-disease
#14
Elsemiek M Engbers, Jorik R Timmer, Mohamed Mouden, Siert Knollema, Pieter L Jager, Jan Paul Ottervanger
The prognostic value of myocardial perfusion imaging (MPI) with the cadmium zinc telluride (CZT) single photon emission computed tomography (SPECT) camera is not well established. Therefore, the aim of the current study was to evaluate the prognostic value of MPI performed with a CZT SPECT camera in a large cohort of patients suspected for coronary artery disease (CAD). Methods: 4057 consecutive symptomatic stable patients without a history of CAD underwent CZT SPECT MPI. During a median follow-up of 2.4 years (25th-75th percentile:1...
April 27, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28447284/apical-sparing-pattern-of-left-ventricular-myocardial-99m-tc-hmdp-uptake-in-patients-with-transthyretin-cardiac-amyloidosis
#15
Axel Van Der Gucht, Anne-Ségolène Cottereau, Mukedaisi Abulizi, Aziz Guellich, Paul Blanc-Durand, Jean-Marc Israel, Arnault Galat, Violaine Plante-Bordeneuve, Jean-Luc Dubois-Randé, Diane Bodez, Jean Rosso, Thibaud Damy, Emmanuel Itti
BACKGROUND: A decreased longitudinal strain in basal segments with a base-to-apex gradient has been described in patients with cardiac amyloidosis (CA). OBJECTIVES: Aim was to investigate the left ventricular (LV) regional distribution of early-phase (99m)Tc-Hydroxymethylene diphosphonate ((99m)Tc-HMDP) uptake in patients with transthyretin-related cardiac amyloidosis (TTR-CA). METHODS: All patients underwent a whole-body planar (99m)Tc-HMDP scintigraphy acquired at 10-min post-injection (early-phase) followed by a thorax SPECT/CT...
April 26, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28447283/adenosine-stress-myocardial-perfusion-imaging-in-octogenarians-safety-tolerability-and-long-term-prognostic-implications-of-hemodynamic-response-and-spect-related-variables
#16
Athanasios Katsikis, Athanasios Theodorakos, Spyridon Papaioannou, Antonios Kalkinis, Genovefa Kolovou, Konstantinos Konstantinou, Maria Koutelou
BACKGROUND: Evaluation of tolerability, safety, and prognostic implications of adenosine stress myocardial perfusion imaging (MPI) in octogenarians. METHODS: 370 octogenarians (49% known coronary artery disease) were studied. Hemodynamic response, MPI-related data, and rest-left ventricular ejection fraction (LVEF) based on echocardiography were registered per patient, and prospective follow-up was performed to document all-cause death (ACD), cardiac death (CD), myocardial infarction (MI), and late revascularization...
April 26, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28439760/prognostic-study-of-cardiac-events-in-japanese-patients-with-chronic-kidney-disease-using-ecg-gated-myocardial-perfusion-imaging-final-3-year-report-of-the-j-access-3-study
#17
Satoko Nakamura, Yuhei Kawano, Kenichi Nakajima, Hiroki Hase, Nobuhiko Joki, Tsuguru Hatta, Shigeyuki Nishimura, Masao Moroi, Susumu Nakagawa, Tokuo Kasai, Hideo Kusuoka, Yasuchika Takeishi, Mitsuru Momose, Kazuya Takehana, Mamoru Nanasato, Syunichi Yoda, Hidetaka Nishina, Naoya Matsumoto, Tsunehiko Nishimura
BACKGROUND: Myocardial perfusion imaging (MPI) is considered useful for risk stratification among patients with chronic kidney disease (CKD), without renal deterioration by contrast media. METHODS AND RESULTS: The Japanese Assessment of Cardiac Events and Survival Study by Quantitative Gated SPECT (J-ACCESS 3) is a multicenter, prospective cohort study investigating the ability of MPI to predict cardiac events in 529 CKD patients without a definitive coronary artery disease...
April 24, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28439736/early-cardiac-perfusion-defects-after-left-sided-radiation-therapy-for-breast-cancer-is-there-a-volume-response
#18
REVIEW
Orit Kaidar-Person, Timothy M Zagar, Jorge Daniel Oldan, Jason Matney, Ellen L Jones, Shiva Das, Brian C Jensen, Richard C Zellars, Terence Z Wong, Lawrence B Marks
PURPOSE: Cardiac single-photon emission computed tomography (SPECT) is often used to identify defects in myocardial perfusion due to atherosclerotic coronary artery disease. It was also used in studies to evaluate radiation therapy (RT)-associated cardiac abnormalities. In the current review, we aim to evaluate the rates of post-RT cardiac SPECT early perfusion abnormalities and relate this to the irradiated left ventricular volume. METHODS: The studies cited in this systematic review were identified using the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines...
April 21, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28432673/prognostic-value-of-left-ventricular-dyssynchrony-evaluated-by-gated-myocardial-perfusion-imaging-in-patients-with-chronic-kidney-disease-and-normal-perfusion-defect-scores
#19
Hiroaki Mori, Satoshi Isobe, Susumu Suzuki, Kazumasa Unno, Ryota Morimoto, Naoaki Kano, Takahiro Okumura, Yoshinari Yasuda, Katsuhiko Kato, Toyoaki Murohara
BACKGROUND: This study aimed to investigate whether indices of left ventricular (LV) dyssynchrony by gated myocardial perfusion SPECT (GMPS) could be useful to predict prognosis in chronic kidney disease (CKD) patients with normal perfusion defect scores. METHODS: One hundred and sixty-seven CKD patients with normal perfusion defect scores on adenosine-stress (201)Tl GMPS and no previous history of overt heart diseases were enrolled. Phase standard deviation (PSD) and bandwidth (BW) were automatically calculated from GMPS...
April 21, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28432671/investigation-of-the-physical-effects-of-respiratory-motion-compensation-in-a-large-population-of-patients-undergoing-tc-99m-cardiac-perfusion-spect-ct-stress-imaging
#20
P Hendrik Pretorius, Karen L Johnson, Seth T Dahlberg, Michael A King
BACKGROUND: Respiratory motion can deteriorate image fidelity in cardiac perfusion SPECT. We determined the extent of respiratory motion, assessed its impact on image fidelity, and investigated the existence of gender differences, thereby examining the influence of respiratory motion in a large population of patients. METHODS: One thousand one hundred and three SPECT/CT patients underwent visual tracking of markers on their anterior surface during stress acquisition to track respiratory motion...
April 21, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
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