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Nuclear Medicine Communications

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https://www.readbyqxmd.com/read/29672466/a-comparative-study-of-quantitative-assessment-with-fluorine-18-fluorodeoxyglucose-positron-emission-tomography-and-endoscopic-ultrasound-in-oesophageal-cancer
#1
Aditya Borakati, Abdul Razack, Chris Cawthorne, Rajarshi Roy, Sharjeel Usmani, Najeeb Ahmed
OBJECTIVES: This study aims to assess the correlation between PET/CT and endoscopic ultrasound (EUS) parameters in patients with oesophageal cancer. PATIENTS AND METHODS: All patients who had complete PET/CT and EUS staging performed for oesophageal cancer at our centre between 2010 and 2016 were included. Images were retrieved and analysed for a range of parameters including tumour length, volume and position relative to the aortic arch. RESULTS: Seventy patients were included in the main analysis...
April 18, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29672465/lactate-dehydrogenase-levels-and-18f-fdg-pet-ct-metrics-differentiate-between-mediastinal-hodgkin-s-lymphoma-and-primary-mediastinal-b-cell-lymphoma
#2
Rayan H M Alkhawtani, Walter Noordzij, Andor W J M Glaudemans, Rozemarijn S van Rijn, Hilde T van der Galiën, Hans Balink, Marcel Nijland, Hugo J A Adams, Gerwin Huls, Tom van Meerten, Thomas C Kwee
PURPOSE: This study aims to investigate whether clinical, laboratory, and fluorine-18-fluorodeoxyglucose (F-FDG) PET/CT findings can discriminate between mediastinal Hodgkin's lymphoma and primary mediastinal B-cell lymphoma (PMBCL). PATIENTS AND METHODS: This retrospective study included 56 patients (42 with mediastinal Hodgkin's lymphoma and 14 with PBMCL). Differences in clinical, laboratory, and F-FDG PET/CT metrics were assessed between Hodgkin's lymphoma and PMBCL...
April 18, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29672464/effects-of-breathing-motion-on-pet-acquisitions-step-and-shoot-versus-continuous-bed-motion
#3
Yoshiki Owaki, Tadaki Nakahara, Takeshi Shimizu, Anne M Smith, Wing K Luk, Kazumasa Inoue, Masahiro Fukushi, Kiyotaka Nakajima
OBJECTIVES: Continuous bed motion (CBM) acquisition recently became available in whole-body PET/CT scanners in addition to the conventional step and shoot (S&S) acquisition. In this work, we compared the image quality between these acquisition methods using a phantom simulating periodic motion to mimic motion from patient breathing in a controlled manner. METHODS: PET image quality was assessed using the National Electrical Manufacturers Association IQ torso phantom filled with an F-FDG solution using a 4 : 1 target-to-background ratio...
April 18, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29672463/limited-additional-value-of-cervical-ultrasonography-over-a-negative-18f-fdg-pet-ct-for-diagnosing-cervical-lymph-node-metastases-in-patients-with-esophageal-cancer-a-systematic-review-and-meta-analysis
#4
Lucas Goense, Jihane Meziani, Peter S N van Rossum, Frank J Wessels, Gert J Meijer, Marnix G E H Lam, Richard van Hillegersberg, Jelle P Ruurda
OBJECTIVE: To assess the additional value of cervical ultrasonography as supplement to a negative fluorine-18-fluorodeoxyglucose (F-FDG) PET/computed tomography (CT) for detecting cervical lymph node metastases during the initial staging of patients with esophageal cancer. METHODS: PubMed/Medline, Embase, and the Cochrane library were systematically searched. The analysis included diagnostic studies describing the accuracy of cervical ultrasonography and integrated F-FDG PET/CT or standalone F-FDG PET and CT for detecting cervical lymph node metastases in patients with esophageal cancer...
April 18, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29672462/patient-specific-lean-body-mass-can-be-estimated-from-limited-coverage-computed-tomography-images
#5
Joke Devriese, Laurence Beels, Alex Maes, Christophe van de Wiele, Hans Pottel
OBJECTIVE: In PET/CT, quantitative evaluation of tumour metabolic activity is possible through standardized uptake values, usually normalized for body weight (BW) or lean body mass (LBM). Patient-specific LBM can be estimated from whole-body (WB) CT images. As most clinical indications only warrant PET/CT examinations covering head to midthigh, the aim of this study was to develop a simple and reliable method to estimate LBM from limited-coverage (LC) CT images and test its validity. PATIENTS AND METHODS: Head-to-toe PET/CT examinations were retrospectively retrieved and semiautomatically segmented into tissue types based on thresholding of CT Hounsfield units...
April 18, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29668513/prognostic-value-of-metabolic-tumor-volume-and-total-lesion-glycolysis-in-esophageal-carcinoma-patients-treated-with-definitive-chemoradiotherapy
#6
Berna A Yildirim, Nese Torun, Ozan C Guler, Cem Onal
PURPOSE: The aim of this study was to evaluate the prognostic importance metabolic tumor volume (MTV), total lesion glycolysis (TLG), and standardized uptake value (SUV) in patients with esophageal cancer treated with definitive chemoradiotherapy. PATIENTS AND METHODS: Seventy-two esophageal cancer patients treated with definitive chemoradiotherapy [57 (79%) patients] or definitive radiotherapy [15 (21%) patients] were retrospectively analyzed. The regions equal to or greater than SUV of 2...
April 17, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29652748/the-scintigraphic-biodistribution-and-histopathological-evaluation-of-the-effect-of-experimental-131i-administration-on-the-gastrointestinal-system-and-the-demonstration-of-the-na-i-symporter-by-immunohistochemistry-in-rats
#7
Rahsan Yilmaz, Nihat Yumusak, Murat Sadic, Hasan I Atilgan, Meliha Korkmaz, Faruk Bozkaya
OBJECTIVE: The aim of this study was to investigate histopathological changes and biodistribution of iodine-131 (I) in the gastrointestinal system (GIS) and also Na/I Symporter (NIS) presence by immunohistochemically in the experimental treatment of rats with radioactive iodine (RAI). MATERIALS AND METHODS: Rats were divided into experimental and control groups as random early group 2 (24 h), intermediate group 3 (3 weeks), and late period group 4 (3 months). Experimental groups were administered 100 MBq (∼3 mCi, 12 mCi/kg) by orogastric route with orogastric tube...
April 12, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29652747/the-incremental-clinical-value-of-cardiac-hybrid-spect-cta-imaging-in-coronary-artery-disease
#8
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/29652746/fluorine-18-fluorodeoxyglucose-pet-ct-in-hematopoietic-stem-cell-transplant-patients-with-fusariosis-initial-findings-of-a-case-series-review
#9
Marcelo R Schirmer, Michel P Carneiro, Luiz S Machado, Alessandra L da S Chaves, Flávia P P L Lopes
BACKGROUND: Fusariosis is an opportunistic fungal infection that affects mostly leukemic and hematopoietic stem cell transplant patients. Locally invasive and disseminated infection may occur. Treatment is challenging, and besides evaluation of immune status, one also needs to take into account organ involvement to predict the duration and prognosis. OBJECTIVE: The aim of this study was to present the findings and clinical follow-up from a series of cases of Fusarium spp...
April 12, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29649065/ageing-effect-on-18f-dopa-and-123i-mibg-uptake-a-cross-sectional-study
#10
Agostino Chiaravalloti, Gaetano Barbagallo, Maria Ricci, Pasqualina Sannino, Georgios Karalis, Francesco Ursini, Orazio Schillaci
BACKGROUND: The aim of this study was to investigate the relationship between age and uptake of fluorine-18-L-dihydroxyphenylalanine (F-DOPA) in the brain and myocardial uptake of iodine-123-metaiodobenzylguanidine (I-MIBG) in normal adult participants. PARTICIPANTS AND METHODS: To this end, a total of 72 healthy participants were enroled. Of these, 37 individuals (male, 21; female, 16; mean age: 60±12 years; age range: 38-85 years) underwent F-DOPA PET/CT, whereas 35 individuals (male, 19; female, 16; mean age: 61±17 years; age range: 17-87 years) underwent I-MIBG scintigraphy...
April 11, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29634659/diagnostic-value-of-18f-fdg-pet-mri-in-recurrent-pelvis-malignancies-of-female-patients-a-systematic-review-and-meta-analysis
#11
Menglong Zheng, Daohai Xie, Chenhuan Pan, Yingying Xu, Wenxia Yu
The aim of this study was to assess the diagnostic performance of fluorine-18-fluorodeoxyglucose (F-FDG) PET/MRI for suspected recurrence of pelvis malignancies of female patients using a meta-analysis. We performed a systematical literature search for relevant studies in PubMed, Cochrane Library, Google Scholar, and several Chinese databases. Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2) was used to assess the quality of all included studies. Pooled sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, and diagnostic odds ratio were calculated per patient and per lesion...
April 9, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29634658/prognostic-value-of-pretreatment-pet-ct-lean-body-mass-corrected-parameters-in-patients-with-hepatocellular-carcinoma
#12
Muchuan Sun, Guoxu Zhang, Jia Guo, Shanhu Hao, Zhiguo Wang, Guoguang Fan
OBJECTIVE: This study was designed to investigate whether pretreatment fluorine-18-fluorodeoxyglucose (F-FDG) PET/computed tomography (CT) lean body mass-corrected parameters could predict the overall survival (OS) better than the established predictors in patients with hepatocellular carcinoma (HCC). PATIENTS AND METHODS: We retrospectively analyzed 61 patients with HCC with pretreatment F-FDG-PET/CT. Besides obtaining clinical factors, we measured both lean body mass-corrected and body weight-corrected PET/CT parameters, including metabolic tumor volume, maximal standardized uptake value of the tumor, total lesion glycolysis, tumor-to-normal liver uptake ratio, and so on...
April 9, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29629979/pulmonary-aspiration-only-increases-the-risk-of-right-sided-pneumonia-in-children-comparison-of-salivagrams-and-chest-radiographs
#13
Ha Wu, Xiaofei Zhao
PURPOSE: A salivagram is often used to detect pulmonary aspiration, whereas chest radiography is often used to diagnose pneumonia. This study analysed the relationship between pulmonary aspiration and aspiration pneumonia in children, and the differences between lungs. PATIENTS AND METHODS: The salivagram and chest radiography results of 696 children (466 boys and 230 girls; aged 1-54 months; mean age, 4.7 months; median age, 3 months) diagnosed with respiratory tract infections between December 2013 and June 2017 were retrospectively analysed...
April 6, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29613968/dosimetry-based-treatment-for-graves-disease
#14
Steve L Hyer, Brenda Pratt, Matthew Gray, Sarah Chittenden, Yong Du, Clive L Harmer, Glenn D Flux
OBJECTIVE: The aim of this retrospective study was to assess the long-term outcome of a personalized dosimetry approach in Graves' disease aiming to render patients euthyroid from a planned thyroid absorbed dose of 60 Gy. PATIENTS AND METHODS: A total of 284 patients with Graves' disease were followed prospectively following administration of radioiodine calculated to deliver an absorbed dose of 60 Gy. Patients with cardiac disease were excluded. Outcomes were analysed at yearly intervals for up to 10 years with a median follow-up of 37...
April 2, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29608507/optimization-of-the-ct-component-of-spect-ct-and-establishment-of-local-ct-diagnostic-reference-levels-for-clinical-practice
#15
Jennifer L Dennis, Alastair J Gemmell, Alice J Nicol
OBJECTIVE: The aim of this study was to perform a process of optimization and establish local diagnostic reference levels (DRLs) for the computed tomography (CT) component of single-photon emission computed tomography (SPECT)-CT imaging, for use in clinical practice. METHODS: A multidisciplinary group defined categories for the clinical purpose of the CT component of local SPECT-CT examinations. Each of the examinations were assigned a category, and optimization of acquisition and reconstruction parameters was performed to achieve the required image quality...
March 31, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29608508/tumor-heterogeneity-hypoxia-and-immune-markers-in-surgically-resected-non-small-cell-lung-cancer
#16
Angelo Castello, Fabio Grizzi, Luca Toschi, Sabrina Rossi, Daoud Rahal, Federica Marchesi, Carlo Russo, Giovanna Finocchiaro, Egesta Lopci
OBJECTIVES: This study aimed to determine the prognostic role of textural features and their association with metabolic parameters, hypoxia, and cancer-related immune markers in non-small-cell lung cancer (NSCLC) patients. PATIENTS AND METHODS: The trial was registered at http://www.clinicaltrials.gov (NCT02519062). From January 2010 to May 2014, 44 patients (male : female=33 : 11; median age: 69.5 years), referred to our Institution for NSCLC resection, were enrolled...
March 30, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29596133/an-update-on-dose-calibrator-settings-for-nuclides-used-in-nuclear-medicine
#17
Denis E Bergeron, Jeffrey T Cessna
BACKGROUND: Most clinical measurements of radioactivity, whether for therapeutic or imaging nuclides, rely on commercial re-entrant ionization chambers ('dose calibrators'). The National Institute of Standards and Technology (NIST) maintains a battery of representative calibrators and works to link calibration settings ('dial settings') to primary radioactivity standards. Here, we provide a summary of NIST-determined dial settings for 22 radionuclides. METHODS: We collected previously published dial settings and determined some new ones using either the calibration curve method or the dialing-in approach...
March 28, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29578927/minimal-starting-time-of-data-reconstruction-for-qualitative-myocardial-perfusion-rubidium-82-positron-emission-tomography-imaging
#18
Joris D van Dijk, Eline D Huizing, Jorn A van Dalen, Jorik R Timmer, Pieter L Jager
OBJECTIVE: Qualitative positron emission tomography (PET) myocardial perfusion imaging (MPI) scans are reconstructed with a delay after an injection of rubidium-82 (Rb) to ensure blood pool clearance and sufficient left ventricle to myocardium contrast. Our aim was to derive the minimal starting time of data reconstruction (STDR) after an injection of Rb for which the diagnostic value and image quality remained unaffected. MATERIALS AND METHODS: We retrospectively included 23 patients who underwent rest-stress Rb PET MPI using 740 MBq...
March 23, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29570125/improvement-to-visualization-of-nodes-in-breast-cancer-patients-following-audit-are-we-seeing-the-problem
#19
Carolyn L Paterson, Fraser R Hendry, Alison A Bolster
Successful localization of nodes in breast cancer patients depends upon the effectiveness of the lymphoscintigraphy technique employed. A benefit of performing imaging as part of this procedure is that it allows sites to audit their technique. An audit of breast cancer patients at the Glasgow Royal Infirmary (GRI) hospital showed nodes to be visualized in only 81% of patients. Current guidelines state that nodes should be seen in more than 95% of patients. A period of investigation and review led to changes being made to the injection and imaging technique employed at the GRI site...
March 21, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29561475/study-of-the-peak-splitting-in-an-alternative-method-for-the-radiochemical-purity-measurement-of-99mtechnetium-sestamibi
#20
Manuel Montoza-Aguado, Carlos Salgado-García, Luis Falcón-Márquez, Ana Luna-Alcaide, Amelia Jiménez-Heffernan, Carmen Puentes-Zarzuela
One of the alternative methods for the measurement of radiochemical purity (RCP) of Technetium-sestamibi uses Whatman 3MM paper as the stationary phase and ethyl acetate as the mobile phase. However, alternative method shows peak splitting and shouldering of the radiopharmaceutical. This could be because of higher levels of analyte. We aimed to assess the effect of sample dilution (1 : 1) on this method and to compare these RCP values with the reference method. The diluted samples showed a unique peak in the radiopharmaceutical zone, but the RCP values were significantly different (P<0...
March 20, 2018: Nuclear Medicine Communications
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