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https://www.readbyqxmd.com/read/28533641/image-findings-of-a-rare-case-of-neuroendocrine-tumor-metastatic-to-orbital-extraocular-muscle-in-gallium-68-dotanoc-positron-emission-tomography-computed-tomography-and-therapy-with-lutetium-177-dotatate
#1
Koramadai Karuppusamy Kamaleshwaran, Jephy Joseph, Indra Upadhya, Ajit Sugunan Shinto
Metastatic tumor is one of several etiologies of space-occupying masses in the orbit that accounts for 1-13% of all orbital masses. In the adult patient population, breast cancer is the most common tumor to metastasize to the orbit, followed by metastasis from the lung, prostate, and gastrointestinal tract. Carcinoid tumors are rare neuroendocrine neoplasms derived from enterochromaffin cells, which are found primarily in the gastrointestinal tract and bronchial tree. Liver metastases are the classic presentation of distant disease...
April 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28533634/estimation-of-whole-body-radiation-exposure-to-nuclear-medicine-personnel-during-synthesis-of-177-lutetium-labeled-radiopharmaceuticals
#2
Geetanjali Arora, Rajesh Mishra, Praveen Kumar, Madhav Yadav, Sanjana Ballal, Chandrasekhar Bal, Nishikant Avinash Damle
PURPOSE OF THE STUDY: With rapid development in the field of nuclear medicine therapy, radiation safety of the personnel involved in synthesis of radiopharmaceuticals has become imperative. Few studies have been done on estimating the radiation exposure of personnel involved in the radio labeling of (177)Lu-compounds in western countries. However, data from the Indian subcontinent are limited. We have estimated whole body radiation exposure to the radiopharmacist involved in the labeling of: (177)Lu-DOTATATE, (177)Lu-PSMA-617, and (177)Lu-EDTMP...
April 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28473600/most-intended-management-changes-after-68-ga-dotatate-pet-ct-are-implemented
#3
Jérémie Calais, Johannes Czernin, Matthias Eiber, Wolfgang Peter Fendler, Jeannine Gartmann, Anthony Heaney, Andrew Hendifar, Joseph Pisegna, Joel Randolph Hecht, Edward Wolin, Roger Slavik, Pawan Gupta, Andrew Quon, Christiaan Schiepers, Martin Allen-Auerbach, Ken Herrmann
Background: In this prospective referring physician based survey, we investigated the definite clinical impact of (68)Ga-DOTATATE positron emission tomography / computed tomography (PET/CT) on managing patients with neuroendocrine tumors (NET). Methods: We prospectively studied 130 patients with (68)Ga-DOTATATE PET/CT referred for initial or subsequent management decisions (NCT02174679). Referring physicians completed one questionnaire prior to the scan (Q1) to indicate the treatment plan without PET/CT information; one immediately after review of the imaging report to denote intended management changes (Q2); and one 6 months later (Q3) to verify whether intended changes were in fact implemented...
May 4, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28471845/early-efficacy-of-and-toxicity-from-lutetium-177-dotatate-treatment-in-patients-with-progressive-metastatic-net
#4
Deborah Pencharz, Martin Walker, Mehmet Yalchin, Ann-Marie Quigley, Martyn Caplin, Christos Toumpanakis, Shaunak Navalkissoor
OBJECTIVE: Lutetium-177 DOTA-D-Phe1-Tyr3-octreotide (Lu-DOTATATE) is a treatment option for patients with well-differentiated metastatic neuroendocrine tumours. Our centre started administering this therapy in 2012. The aim of this study was therefore to analyse the first cohort of patients treated with Lu-DOTATATE to determine its early efficacy and toxicity. PATIENTS AND METHODS: We retrospectively analysed patient, tumour and treatment characteristics, end-of-treatment outcome, time to progression and toxicity in 79 consecutive patients treated with Lu-DOTATATE who had progressive NET according to Response Evaluation Criteria in Solid Tumours criteria...
May 3, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28462171/multiple-recurrent-paraganglioma-in-a-pediatric-patient-with-germline-sdh-b-mutation
#5
Aidan McGowan, Julie Y An, Sally Tanakchi, Mahir Maruf, Akhil Muthigi, Arvin George, Daniel Su, Maria J Merino, W Marston Linehan, Shawna L Boyle, Adam R Metwalli
Magnetic Resonance Imaging (MRI) and fluoro-2-deoxy-d-glucose positron emission tomography (FDG-PET) are recognized approaches for locating paragangliomas. Recently, gallium-68 DOTA-octreotate (DOTATATE) scans have shown promise detecting neuroendocrine tumors missed by FDG-PET and MRI. 13-year-old male with SDH-B mutation presented with symptoms of paraganglioma and elevated catecholamines. MRI did not demonstrate the T2 hyper intense signal typical of paraganglioma and pheochromocytoma; FDG-PET scan did not reveal increased foci of uptake...
July 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28450556/improved-detection-of-transosseous-meningiomas-using-68-ga-dotatate-pet-ct-compared-to-contrast-enhanced-mri
#6
Wolfgang G Kunz, Lisa M Jungblut, Philipp M Kazmierczak, Franziska J Vettermann, Andreas Bollenbacher, Jörg C Tonn, Christian Schichor, Axel Rominger, Nathalie L Albert, Peter Bartenstein, Maximilian F Reiser, Clemens C Cyran
(68)Ga-DOTATATE PET-CT enables detection of meningioma tissue based on somatostatin receptor 2 expression. Transosseous extension of intracranial meningiomas is known to be an important risk factor of tumor recurrence and patient mortality. We analyzed the diagnostic performance of (68)Ga-DOTATATE PET-CT and contrast-enhanced MRI (CE-MRI) for the detection of osseous infiltration using qualitative and quantitative imaging parameters. Methods: In this IRB-approved retrospective study, subjects were selected from 327 consecutive (68)Ga-DOTATATE PET-CT exams for evaluation of confirmed or suspected meningioma...
April 27, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28435455/the-netpet-score-combining-fdg-and-somatostatin-receptor-imaging-for-optimal-management-of-patients-with-metastatic-well-differentiated-neuroendocrine-tumors
#7
EDITORIAL
Elif Hindié
Neuroendocrine tumors (NET) are often metastatic at the time of diagnosis. Metastatic well-differentiated (G1/G2) NET may display a wide range of behaviors, ranging from indolent to aggressive, even within apparently homogeneous categories. Thus, selecting the optimal treatment strategy is a challenging task. Somatostatin receptor imaging (SRI) is the standard molecular imaging technique for well-differentiated NET. When performed with (68)Ga-labeled somatostatin analogs (SRI-PET), it offers exquisite sensitivity for disease staging...
2017: Theranostics
https://www.readbyqxmd.com/read/28433399/simultaneous-68-ga-dotatate-positron-emission-tomography-magnetic-resonance-imaging-in-meningioma-target-contouring-feasibility-and-impact-upon-interobserver-variability-versus-positron-emission-tomography-computed-tomography-and-computed-tomography-magnetic
#8
J Maclean, N Fersht, K Sullivan, I Kayani, J Bomanji, J Dickson, C O'Meara, S Short
AIMS: The increasing use of highly conformal radiation techniques to treat meningioma confers a greater need for accurate targeting. Several groups have shown that positron emission tomography/computed tomography (PET/CT) information alters meningioma targets contoured by single observers, but whether this translates into improved accuracy has not been defined. As magnetic resonance imaging (MRI) is the cornerstone of meningioma target contouring, simultaneous PET/MRI may be superior to PET/CT...
April 19, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28429044/-68-ga-dotatate-pet-ct-in-recurrent-medullary-thyroid-carcinoma-a-lesion-by-lesion-comparison-with-111-in-octreotide-spect-ct-and-conventional-imaging
#9
Lilian Yuri Itaya Yamaga, Marcelo L Cunha, Guilherme C Campos Neto, Marcio R T Garcia, Ji H Yang, Cleber P Camacho, Jairo Wagner, Marcelo B G Funari
PURPOSE: The aim of this study was to prospectively compare the detection rate of (68)Ga-DOTATATE PET-CT with (111)In-octreotide SPECT-CT and conventional imaging (CI) in medullary thyroid carcinoma (MTC) patients with increased calcitonin (Ctn) levels but negative CI after thyroidectomy. METHODS: Fifteen patients with raised Ctn levels and/or CI evidence of recurrence underwent (68)Ga-DOTATATE PET-CT, (111)In-octreotide SPECT-CT and CI. Histopathology, CI and biochemical/clinical/imaging follow-up were used as the reference standard...
April 20, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28428192/long-term-efficacy-survival-and-safety-of-177lu-dota0-tyr3-octreotate-in-patients-with-gastroenteropancreatic-and-bronchial-neuroendocrine-tumors
#10
Tessa Brabander, Wouter A Van der Zwan, Jaap Jm Teunissen, Boen L R Kam, Richard A Feelders, Wouter W de Herder, Casper H J van Eijck, Gaston J H Franssen, Eric P Krenning, Dik J Kwekkeboom
Purpose<br /> Bronchial and gastroenteropancreatic neuroendocrine tumors (NETs) are slow-growing tumors, which frequently express somatostatin receptors on their cell membranes. These receptors are targets for therapy with Lutetium-177-labeled somatostatin analogs. We have treated over 1200 patients with peptide receptor radionuclide therapy (PRRT) with (177)Lu-DOTA(0),Tyr(3)]octreotate ((177)Lu-DOTATATE) since the year 2000 and present the results on efficacy, survival and toxicity of this therapy. <p>Patients and methods<br /> For safety analysis, 610 patients treated with a cumulative dose of at least 100 mCi (3...
April 20, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28400403/molecular-imaging-in-the-investigation-of-hypoglycaemic-syndromes-and-their-management
#11
David A Pattison, Rodney J Hicks
There has been recent progress in molecular imaging using a variety of cellular targets for the investigation of adult non-diabetic hypoglycaemic syndromes and its integration into patient management. These targets include peptide receptors - somatostatin receptors (SSTR) and glucagon-like peptide-1 receptor (GLP-1R) - the Amine Precursor Uptake and Decarboxylation system utilising the diphydroxyphenylaline (DOPA) analogue 6-[18F]-L-fluoro-L-3, 4-dihydroxyphenylalanine (18F-FDOPA), and glycolytic metabolism with 2-[18F]Fluoro-2-Deoxy-D-Glucose (FDG)...
April 11, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28385306/detection-of-atherosclerotic-inflammation-by-68-ga-dotatate-pet-compared-to-18-f-fdg-pet-imaging
#12
Jason M Tarkin, Francis R Joshi, Nicholas R Evans, Mohammed M Chowdhury, Nichola L Figg, Aarti V Shah, Lakshi T Starks, Abel Martin-Garrido, Roido Manavaki, Emma Yu, Rhoda E Kuc, Luigi Grassi, Roman Kreuzhuber, Myrto A Kostadima, Mattia Frontini, Peter J Kirkpatrick, Patrick A Coughlin, Deepa Gopalan, Tim D Fryer, John R Buscombe, Ashley M Groves, Willem H Ouwehand, Martin R Bennett, Elizabeth A Warburton, Anthony P Davenport, James H F Rudd
BACKGROUND: Inflammation drives atherosclerotic plaque rupture. Although inflammation can be measured using fluorine-18-labeled fluorodeoxyglucose positron emission tomography ([(18)F]FDG PET), [(18)F]FDG lacks cell specificity, and coronary imaging is unreliable because of myocardial spillover. OBJECTIVES: This study tested the efficacy of gallium-68-labeled DOTATATE ((68)Ga-DOTATATE), a somatostatin receptor subtype-2 (SST2)-binding PET tracer, for imaging atherosclerotic inflammation...
April 11, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28379809/177lu-dotatate-for-midgut-neuroendocrine-tumors
#13
LETTER
Claude Matuchansky
No abstract text is available yet for this article.
April 6, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28379808/177lu-dotatate-for-midgut-neuroendocrine-tumors
#14
LETTER
Jonathan Strosberg, Eric Krenning
No abstract text is available yet for this article.
April 6, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28342392/value-of-the-68-ga-dotatate-pet-ct-in-the-diagnosis-of-endometriosis-a-pilot-study
#15
M Fastrez, C Artigas, N Sirtaine, Z Wimana, M Caillet, S Rozenberg, P Flamen
OBJECTIVE: The non-invasive diagnosis of endometriosis remains challenging. Recent data suggested that somatostatin might be involved in its pathogenesis. High sensitive visualization of somatostatin receptors expression is possible using PET-CT imaging after the administration of a (68)Ga-labeled somatostatin analog (DOTATATE) that will bind to the somatostatin receptor sub-types 2 and 5. The aim of the present study was to assess the usefulness of (68)Ga-DOTATATE PET-CT in the diagnosis of endometriosis...
May 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28341976/development-and-evaluation-of-user-friendly-single-vial-dota-peptide-kit-formulations-specifically-designed-for-radiolabelling-with-68-ga-from-a-tin-dioxide-68-ge-68-ga-generator
#16
Deidré Prince, Daniel Rossouw, Claudia Davids, Sietske Rubow
PURPOSE: This study was aimed to develop single vial 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA)-peptide kits to be used with fractionated eluates from a SnO2-based (68)Ge/(68)Ga generator. PROCEDURES: Kits were formulated with 35 μg DOTA-Tyr(3)-Thre(8)-octreotide, DOTA-[Tyr(3)]-octreotide and DOTA-[NaI(3)]-octreotide (DOTATATE, DOTATOC and DOTANOC) and sodium acetate powder, vacuum-dried and stored at -20 °C for up to 12 months. Labelling of the kits was carried out with 2 ml (68)Ga eluate...
March 24, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28341900/tumor-induced-osteomalacia-experience-from-a-south-american-academic-center
#17
G González, R Baudrand, M F Sepúlveda, N Vucetich, F J Guarda, P Villanueva, O Contreras, A Villa, F Salech, L Toro, L Michea, P Florenzano
The majority of tumor-induced osteomalacia cases have been reported in the Northern Hemisphere and Asia. In this first series of South American patients, we show that the clinical presentation and sensitivity of plasmatic fibroblast growth factor 23 and somatostatin analog-based imaging are similar to those described in other populations. INTRODUCTION: Describe the experience of clinical presentation, diagnostic study, and treatment of patients with tumor-induced osteomalacia (TIO) in a South American academic center in comparison to literature...
March 25, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28338529/dosimetry-software-hermes-internal-radiation-dosimetry-from-quantitative-image-reconstruction-to-voxel-level-absorbed-dose-distribution
#18
Eero T Hippeläinen, Mikko J Tenhunen, Hanna O Mäenpää, Jorma J Heikkonen, Antti O Sohlberg
OBJECTIVE: The aim of this work is to validate a software package called Hermes Internal Radiation Dosimetry (HIRD) for internal dose assessment tailored for clinical practice. The software includes all the necessary steps to perform voxel-level absorbed dose calculations including quantitative reconstruction, image coregistration and volume of interest tools. METHODS: The basics of voxel-level dosimetry methods and implementations to HIRD software are reviewed...
May 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28336782/functional-imaging-signature-of-patients-presenting-with-polycythemia-paraganglioma-syndromes
#19
Ingo Janssen, Clara Chi Chen, Zhenping Zhuang, Corina M Millo, Katherine Wolf, Alexander Ling, Frank I Lin, Karen T Adams, Peter Herscovitch, Richard A Feelders, Antonio T Fojo, David Taieb, Electron Kebebew, Karel Pacak
Rationale: Pheochromocytoma/paraganglioma (PPGL) syndromes associated with polycythemia have previously been described in association with mutations in the von Hippel-Lindau (VHL) gene. Recently, mutations in the prolyl hydroxylase gene (PHD) 1 and 2 and in the hypoxia-inducible factor 2 alpha (HIF2A) were also found to be associated with multiple and recurrent PPGL. Such patients also presented with PPGL and polycythemia, and later on, some presented with duodenal somatostatinoma. In additional patients presenting with PPGL and polycythemia, no further mutations have been discovered...
March 23, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28332878/three-diagnoses-on-one-gallium-68-dotatate-scan
#20
Run Yu, Andrew Quon, J Randolph Hecht
No abstract text is available yet for this article.
March 23, 2017: Endocrine Practice
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