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Nuclear Medicine Communications

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https://www.readbyqxmd.com/read/28099265/observer-agreement-of-treatment-responses-on-planar-bone-scintigraphy-in-prostate-cancer-patients-importance-of-the-lesion-assessment-method
#1
Randi F Fonager, Helle D Zacho, Signe Albertsen, Joan Fledelius, June A Ejlersen, Mette H Christensen, Ramune Aleksyniene, José A Biurrun Manresa, Lars J Petersen
PURPOSE: The aim of this study was to assess observer agreement on the evaluation of treatment responses of bone metastases by bone scintigraphy (BS) using different scoring methods in prostate cancer patients. PATIENTS AND METHODS: Sixty-three paired BS from 55 patients were included. BS was performed before and after more than 12 weeks of anticancer treatment. A panel of experienced nuclear medicine physicians from several institutions evaluated treatment response using three different methods: (a) standard clinical assessment, (b) MD Anderson criteria, and (c) Prostate Cancer Working Group 2 (PCWG-2) criteria...
January 17, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28099264/post-treatment-18f-fdg-pet-ct-versus-contrast-enhanced-ct-in-patients-with-oropharyngeal-squamous-cell-carcinoma-comparative-effectiveness-study
#2
Mehdi Taghipour, Esther Mena, Matthew J Kruse, Sara Sheikhbahaei, Rathan M Subramaniam
OBJECTIVE: To compare the accuracy of same-day therapy-assessment PET/computed tomography (PET/CT) and conventional contrast-enhanced computed tomography (CECT) in patients with oropharyngeal squamous cell carcinoma (OPSCC). METHODS: A total of 110 (95 men and 15 women; mean age 59 years) patients with biopsy-proven OPSCC were evaluated with same-day PET/CT and CECT pair scans as part of follow-up therapy assessment. Scans were performed within 6 months after the completion of primary treatment (median time: 3...
January 17, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28067689/eight-years-of-growth-and-change-in-uk-molecular-radiotherapy-with-implications-for-the-future-internal-dosimetry-users-group-survey-results-from-2007-to-2015
#3
Bruno Rojas, Claire Hooker, Daniel R McGowan, Matthew J Guy, Jill Tipping
No abstract text is available yet for this article.
January 6, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28009777/the-cardiosplenic-axis-another-obscure-pathophysiological-function-of-the-spleen-and-its-investigation-using-molecular-imaging
#4
Alexander Dunford, Georgia Keramida, Constantinos D Anagnostopoulos, A Michael Peters
Splenic pathophysiology has been relatively unstudied, but recently, the spleen has received more attention as a result of the discovery of the 'cardiosplenic axis'. This term describes a role that the spleen plays in the progression of atherosclerosis following acute myocardial infarction. Human studies of this axis have largely used fluorine-18-fluorodeoxyglucose (F-FDG) PET/CT to quantify peri-infarction inflammation, arterial wall inflammation and splenic metabolic activity. Most of these studies have quantified arterial wall inflammation and splenic metabolic activity using the standardized uptake value, but this is a semiquantitative measurement with several drawbacks, including overestimation of metabolic activity in overweight individuals and a dependence on blood glucose levels...
December 22, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28002173/higher-preablative-serum-thyroid-stimulating-hormone-level-predicts-radioiodine-ablation-effectiveness-in-patients-with-differentiated-thyroid-carcinoma
#5
Ismaheel O Lawal, Nozipho E Nyakale, Lerwine M Harry, Thabo Lengana, Neo P Mokgoro, Mariza Vorster, Mike M Sathekge
INTRODUCTION: Radioiodine ablation of remnant thyroid tissue is an important adjuvant therapy of differentiated thyroid carcinoma (DTC) after thyroidectomy. Elevated serum thyroid-stimulating hormone (TSH) level is necessary for successful ablation. The optimum level of serum TSH level necessary for successful radioiodine ablation of well-DTC is, however, yet to be defined. We aimed to determine whether higher serum TSH level will result in a better rate of complete ablation of well-DTC using iodine-131 (I) following initial thyroidectomy...
December 20, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27984539/validation-of-an-electronic-image-reader-training-programme-for-interpretation-of-18f-flutemetamol-%C3%AE-amyloid-pet-brain-images
#6
Christopher J Buckley, Paul F Sherwin, Adrian P L Smith, Jan Wolber, Sharon M Weick, David J Brooks
OBJECTIVES: An electronic training programme (ETP) was developed for interpretation of images during routine clinical use of the PET amyloid imaging agent [F]flutemetamol injection (VIZAMYL). This study was carried out to validate the ETP. MATERIALS AND METHODS: Five nuclear medicine technologists (NMTs) and five readers previously inexperienced in amyloid image interpretation were required to self-train using the ETP and pass a test to participate. A total of 305 [F]flutemetamol PET images were then tested as the validation set, following preassessment and reorientation (where required) by one of five NMTs...
December 14, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27984538/clinical-outcomes-of-low-dose-and-high-dose-postoperative-radioiodine-therapy-in-patients-with-intermediate-risk-differentiated-thyroid-cancer
#7
Ju Hye Jeong, Eun Jung Kong, Shin Young Jeong, Sang-Woo Lee, Ihn Ho Cho, Kyung Ah Chun, Jaetae Lee, Byeong-Cheol Ahn
PURPOSE: Recent studies have suggested that a low dose (LD) of radioiodine (RAI) is sufficient to treat differentiated thyroid cancer (DTC) even in patients with intermediate risk. However, these studies evaluated the efficacy of RAI therapy, irrespective of the results of the whole-body scan (WBS). The aim of the present study was to evaluate the response to LD and high-dose (HD) RAI therapy using two different criteria (with and without WBS results) and the reclassification system according to the revised 2015 guidelines of the American Thyroid Association in Korean intermediate-risk DTC patients...
December 14, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27984537/18f-fcho-pet-and-mri-for-the-prediction-of-response-in-glioblastoma-patients-according-to-the-rano-criteria
#8
Julie Bolcaen, Marjan Acou, Tom Boterberg, Christian Vanhove, Filip De Vos, Caroline Van den Broecke, Roel Van Holen, Karel Deblaere, Ingeborg Goethals
PURPOSE: In this study, we investigated fluorine-18 fluoromethylcholine (F-FCho) PET and contrast-enhanced MRI for predicting therapy response in glioblastoma (GB) patients according to the Response Assessment in Neuro-Oncology criteria. Our second aim was to investigate which imaging modality enabled prediction of treatment response first. MATERIALS AND METHODS: Eleven GB patients who underwent no surgery or debulking only and received concomitant radiation therapy (RT) and temozolomide were included...
December 14, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27977537/pretreatment-metabolic-parameters-measured-by-18f-fdg-pet-to-predict-the-outcome-of-first-line-chemotherapy-in-extensive-stage-small-cell-lung-cancer
#9
Xiaozhou Yu, Yanjia Zhu, Jian Wang, Xiuyu Song, Lei Zhu, Xiaoyuan Men, Xiaofeng Li, Dong Dai, Wengui Xu
OBJECTIVE: Patients' pretreatment metabolic burden, as measured by radiotracer fluorine-18 fluorodeoxyglucose (F-FDG) PET/computed tomography (CT), has been shown to predict treatment outcome in various malignancies. However, its predictive role in extensive-stage small cell lung cancer (SCLC) has not been definitively determined. This retrospective study investigated the viability of using common pretreatment metabolic parameters, obtained through F-FDG-PET/CT, to predict outcomes of first-line chemotherapy in extensive-stage SCLC...
December 13, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27977536/incidence-of-a-single-subsegmental-mismatched-perfusion-defect-in-single-photon-emission-computed-tomography-and-planar-ventilation-perfusion-scans
#10
Matthew Stubbs, Kenneth Chan, Helena McMeekin, Shaunak Navalkissoor, Thomas Wagner
OBJECTIVE: This study aims to compare the incidence of ventilation/perfusion (V/Q) scans interpreted as indeterminate for the diagnosis of pulmonary embolism (PE) using single-photon emission computed tomography (SPECT) versus planar scintigraphy and to consider the effect of variable interpretation of single subsegmental V/Q mismatch (SSM). METHODS: A total of 1300 consecutive V/Q scans were retrospectively reviewed. After exclusion and matching for age and sex, 542 SPECT and 589 planar scans were included in the analysis...
December 13, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27977535/the-ideal-dual-isotope-imaging-combination-in-evaluating-patients-with-suspected-infection-of-pelvic-pressure-ulcers
#11
Sherif Heiba, Lewen Stempler, Timothy Sullivan, Dov Kolker, Lale Kostakoglu
INTRODUCTION: The successful management of infected pelvic pressure ulcer patients (PPUP) depends on the distinction between infections limited to soft tissue (STI) and those with underlying osteomyelitis (OM), which can be difficult to determine clinically. Dual-isotope (DI) comprehensive imaging has excellent accuracy in localizing diabetic foot infection and differentiating OM from STI with SPECT/CT utilization. In this study, we assess the accuracy and confidence of the different DI SPECT/CT imaging steps in PPUP with confirmed diagnoses...
December 13, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27922539/effect-of-tomographic-operator-inaccuracies-and-respiratory-motion-on-pet-ct-lung-nodule-images-smearing
#12
Joël Daouk, Pascal Bailly, Roger Bouzerar, Marc-Étienne Meyer
BACKGROUND: In thoracic PET/computed tomography (CT) imaging, uptake foci usually appear smeared because of postreconstruction smoothing and respiratory motion. OBJECTIVE: The aim of the present study was to assess the respective contributions of the reconstruction process and respiratory motion on PET/CT images. MATERIALS AND METHODS: Thirty-one pulmonary lesions were studied. Free-breathing PET/CT acquisitions were followed by a 10-min respiratory-gated PET/CT acquisition...
December 2, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27922538/the-role-of-68ga-dota-noc-pet-ct-in-evaluating-neuroendocrine-tumors-real-world-experience-from-two-large-neuroendocrine-tumor-centers
#13
Mohamad Haidar, Ali Shamseddine, Emmanouil Panagiotidis, Mario Jreige, Deborah Mukherji, Rita Assi, Rayan Abousaid, Toni Ibrahim, Marwan M Haddad, Sobhan Vinjamuri
OBJECTIVE: Our aim was to assess the role of Ga-DOTA-NOC PET/CT as a tool for the management of neuroendocrine tumors (NETs), evaluating the clinical impact on patients from two large NET centers in different geopolitical settings. PATIENTS AND METHODS: This is a retrospective study of patients with NETs who underwent Ga-DOTA-NOC PET/CT at Royal Liverpool University Hospital (UK) and at Mount Lebanon Hospital (Lebanon). Indications for imaging and findings of the PET/CT along with demographic and clinical outcome data were recorded and evaluated...
December 2, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27906780/developing-a-dedicated-comprehensive-%C3%AE-radionuclide-therapy-program-should-this-be-the-vision-of-the-atomic-energy-programs-in-the-next-decade
#14
Sandip Basu, Sharmila Banerjee
No abstract text is available yet for this article.
November 30, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27893588/suite-pet-ct-neuroimaging-for-the-diagnosis-of-parkinson-s-disease-statistical-parametric-mapping-analysis
#15
Ruimin Wang, Baixuan Xu, Zhe Guo, Tong Chen, Jinming Zhang, Yingmao Chen, Haiyan Zhu
OBJECTIVES: The aim of this study was to investigate the topographical distribution of dopamine transporter (DAT), dopamine D2 receptor, and glucose metabolism in Parkinson's disease (PD) using PET/computed tomography (CT) scanning and statistical parametric mapping (SPM) analysis. PARTICIPANTS AND METHODS: Seventy-four patients (58 PD patients and 16 normal controls) underwent DAT, D2 receptor, and glucose brain PET/CT scans using C-methyl-N-2-β-carbomethoxy-3-β-(4-fluorophenyl) tropane (C-β-CFT), C-raclopride (C-RAC), and fluorine-18-fluorodeoxyglucose (F-FDG) radiotracers for the respective scans...
November 28, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27861299/impact-of-concomitant-medication-use-on-myocardial-123i-mibg-imaging-results-in-patients-with-heart-failure
#16
Arnold F Jacobson, Susan White, Mark I Travin, Carol Tseng
INTRODUCTION: Medications that interfere with sympathetic neuronal norepinephrine uptake and storage, such as neuropsychiatrics (NP) and sympathomimetic amines, are most likely to affect cardiac uptake of iodine-123 metaiodobenzylguanidine (I-mIBG). The present study examined these and other medications reported to affect I-mIBG uptake using measurements of cardiac I-mIBG uptake on the heart failure (HF) patients in the ADMIRE-HF extension (X) study. METHODS: Baseline concomitant medications taken by the 961 HF patients were categorized into five groups: calcium channel blockers, NP medications, β agonists and sympathomimetics, α antagonists, and other antihypertensives...
November 16, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27851658/interobserver-agreement-on-cortical-tracer-transit-in-99mtc-mag3-renography-applied-to-congenital-hydronephrosis
#17
Ana Isabel Santos, Liliana Violante, Susana Carmona, Ana Prata, Margarida Rodrigues Victor, Joaquim G Santos, Joaquim Araújo Sequeira, Marta Alves, Ana Luísa Papoila, Amy Piepsz
OBJECTIVE: This study aims to evaluate interobserver agreement on visual analysis of technetium-99m mercaptoacetyltriglycine (Tc-MAG3) renal tissue transit used for the evaluation of antenatal hydronephrosis. MATERIALS AND METHODS: Thirty-eight Tc-MAG3 diuretic renograms were retrospectively collected between 1 and 31 December 2015. The 1-min reframed images were presented to four nuclear medicine consultants and to two nuclear medicine residents, one in the first year of the training program and the others in their fourth and final year...
November 15, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27846041/factors-affecting-the-sensitivity-of-tc-99m-methoxyisobutylisonitrile-dual-phase-parathyroid-single-photon-emission-computed-tomography-in-primary-hyperparathyroidism
#18
Mine Araz, Derya Çayir, Mehmet Erdoğan, Bekir Uçan, Erman Çakal
OBJECTIVE: The aim of this study was to investigate the effects of thyroid diseases and regularly used medications on the sensitivity of Tc-99m methoxyisobutylisonitrile (MIBI) dual-phase parathyroid single photon emission computed tomography (SPECT) and to define indicatives of the result of the study. PATIENTS AND METHODS: Overall, 218 primary hyperparathyroidism patients (190 women, 28 men, mean age: 57±14 years) with thyroid-parathyroid ultrasonography and Tc-99m MIBI dual-phase parathyroid SPECT were retrospectively enrolled...
November 11, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27824726/diagnostic-performance-of-18f-fdg-pet-or-pet-ct-in-restaging-renal-cell-carcinoma-a-systematic-review-and-meta-analysis
#19
Huan Ma, Guohua Shen, Bin Liu, Yuanyou Yang, Pengwei Ren, Anren Kuang
BACKGROUND: In recent years, fluorine-18-fluorodeoxyglucose (F-FDG) PET or PET/computed tomography (PET/CT) has emerged as a valuable method for restaging of cancer. The aim of this study was to evaluate its diagnostic performance for detecting metastatic or recurrent lesions in patients with renal cell carcinoma (RCC). METHODS: Several databases were searched for relevant articles on F-FDG PET or PET/CT for the restaging of RCC. Two researchers independently selected studies, extracted data, and assessed the methodological quality according to the QUADAS-2 tool...
November 7, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27792043/the-role-of-18f-fdg-pet-and-pet-ct-in-the-evaluation-of-primary-cutaneous-lymphoma
#20
Lin Qiu, Guojian Tu, Jing Li, Yue Chen
Primary cutaneous lymphoma (PCL) is the second most common type of extranodal non-Hodgkin lymphoma, including both cutaneous T-cell and B-cell lymphomas. PCL comprises numerous subtypes and thus has myriad clinical presentations in the skin and subcutaneous tissues. Accurate classification and staging are important for making treatment recommendations for PCL and will further impact patient prognosis significantly. We review the role of fluorine-18-fluorodeoxyglucose (F-FDG) PET (F-FDG PET) and F-FDG PET with computed tomography (CT) in the diagnosis, staging, tumor biological evaluation, treatment response assessment, and early recurrence surveillance of PCL...
October 27, 2016: Nuclear Medicine Communications
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