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Showing 1 to 20 of 21 for “"Tc-99m"”.
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Absolute Quantification of Tc-99M Activity Distributions Using A Planar Molecular Breast Imaging Commercial System
… visualize the preferential uptake of technetium-99m-sestamibi (<sup>99m</sup>Tc-sestamibi) by breast cancer cells relative to surrounding benign breast tissues. Clinically, MBI is used primarily as a supplementary tool to standard-of-care mammography because of its improved detection of breast …
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Detection of Symptomatic Heterotopic Gastric Mucosa of the Upper Esophagus using Tc-99m Pertechnetate Scintigraphy
… Gastric Mucosa of the Upper Esophagus using Tc-99m Pertechnetate Scintigraphy Heterotopic gastric mucosa of the upper esophagus (HGMUE) often referred to as an inlet patch, is an asymptomatic benign lesion. However, this inlet patch may cause esophageal ulceration and stricture, leading to …
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La gammagrafía con pirofosfato de estaño marcado con Tc 99m. en el diagnóstico y evaluación del infarto agudo de miocardio
Los estudios radioisotópicos son de gran utilidad en el diagnóstico y pronóstico de la cardiopatía isquémica. En la angina de pecho brindan la posibilidad de visualizar zonas de miocardio hipoperfundidas tanto de forma basal como tras las distintas pruebas de esfuerzo. Asimismo permiten el cálculo …
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[Tc-99m]TRODAT-1: Szintigraphische Darstellung des Dopamintransporters im Gehirn bei gesunden Kontrollen, Patienten mit schizophrenen Störungen und Patienten mit Aufmerksamkeitsdefizit-/ Hyperaktivitätsstörungen
… des DAT wünschenswerte Entwicklung eines 99mTc-markierten Radiopharmakons, statt der üblichen 123I-markierten Tracer oder PET-Liganden, gelang erstmals Kung et al. mit der Synthese von [99mTc]TRODAT-1. Ein Ziel der vorliegenden Arbeit war die erste präklinische Anwendung dieses …
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ΣΥΝΘΕΣΗ ΚΑΙ ΒΙΟΛΟΓΙΚΗ ΜΕΛΕΤΗ ΤΩΝ ΠΑΡΑΓΩΓΩΝ ΤΟΥ 1,8-ΔΙΑΜΙΝΟ-3,6-ΔΙΘΕΙΑ- ΟΚΤΑΝΙΟΥ ΕΠΙΣΗΜΑΣΜΕΝΩΝ ΜΕ ΤΕΧΝΗΤΙΟ-99Μ
… WERE SYNTHESIZED, AS POSSIBLE LIGANDS OF REDUCED TC-99M. THE PRODUCTS WERE CHARACTERIZED BY ELEMENTAL ANALYSIS AND NMR SPECTROSCOPY. THE LIGANDS WERE LABELLED IN AQUEOUS MEDIA WITH TC-99M AFTER ITS REDUCTION WITH NABH4. THEN THE LABELLED COMPOUNDS WERE ANALYZED BY HPLC IN ONE OR MORE 99M …
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Estudo comparativo da viabilidade miocárdica em áreas dissinérgicas ao ecocardiograma basal : cintilografia tomográfica com Tecnécio 99m-mibi sob baixa dose de Dobutamina versus Tálio em repouso-redistribuição
… a acurácia da cintilografia tomográfica Tc-99m-Sestamibi, sob a infusão de dobutamina em baixa dose. Foram protocolados trinta pacientes que sofreram um infarto do miocárdio com padrão “Q”, com dissinergia ao ecocardiograma, e submetidos a estudos perfusionais em dias diferentes, com …
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Evaluation of radiolabelled hynic-salmon calcitonin analogues as imaging agents for multiple myeloma and characterisation of novel hynic derivatives as chelators for technetium
… we report on the synthesis and evaluation of Tc-99m labelled salmon calcitonin (sCT) derivatives, sCTLys18-hynic-TFA and sCT(8-32)Lys18-hynic-TFA as potential imaging agents for MM and other CTR+ malignancies and the characterisation of novel hydrazinonicotinate (hynic) chelators. Following …
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"The Synthesis and Biological Evaluation of Integrated and Conjugated Re/tc-99m-Containing ""3+1"" and Cyclopentadienyltricarbonyl (Cptm) Estrogen Complexes as Receptor-Based Imaging Agents for Breast Cancer"
… linkage (67b, 24%). Studies showed that the Tc analogs were too lipophilic for in vivo use, so we pursued the synthesis of CpTR amides containing ether functionalities in the 7alpha side-chain. This led to two new complexes: short-chain monoether complex 88, and long-chain polyether complex …
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Rhenium and technetium-labeled progestins, the development of receptor-directed agents for diagnostic imaging or therapy
… the readily available radionuclide technetium-99m, three conjugate systems have been prepared in which a progestin is linked to a metal chelate system. These are bis-amino bis-thiol (BAT or N$\sb2$S$\sb2$) systems and are linked through carbon-21 of progesterone or the 17$\alpha$- or …
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Competition in the radioisotopes market: evaluation and analysis of drivers which affect mo-99 market share
… Mo-99, which is used to create Technetium-99m(Tc-99m), is estimated to be utilized in roughly 85% of nuclear medicine diagnostic scans carried out globally (National Academies Press, 2009).
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Compensation of the Cerebral Perfusion in Patients with Infarction : SPM Analysis
… patients with cerebral infarction. Ninety three Tc-99m ECD brain perfusion SPECTs (male/female: 58/35, mean age 58) of 93 patients with cerebral infarction were evaluated retrospectively. Any patient with bilateral cerebrovascular disease was excluded from the study. All patients were grouped …
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Vergleich der dynamischen MR-Mammographie mit der Sestamibi-Mammaszintigraphie bei mammographisch unklaren Mammaläsionen
… Darstellung von Mammakarzinomen wurde die Tc-99m-Sestamibi-Szintigraphie vorgeschlagen. Ziel: Ziel der vorliegenden Arbeit war es, im Rahmen einer prospektiven Studie die Aussagekraft der Mammaszintigraphie und der dynamischen MRT in der Differentialdiagnostik mammographisch unklarer Herde …
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Efeito sobre a perfusão esternal da utilização de ambas as artérias torácicas internas na revascularização miocárdica: avaliação através da cintilografia óssea
… após a administração venosa de 20mCi de MDP-TC 99m. As imagens cintiligráficas foram analisadas de formas qualitativa e quantitativa. A análise estatística foi realizada utilizando-se o teste de t de Student com significância estabelecida em 95%. Resultados: No grupo A (ATI esqueletizada) o …
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Correlation of 99mTc Sucralfate scan and endoscopic grading in caustic oesophageal injury: An observational analytic study at Red Cross War Memorial Children’s Hospital
Introduction: Technecium (Tc) 99m Sucralfate scan has been shown to be a reliable and non-invasive screening modality after caustic substance ingestion, followed by oesophagoscopy under general anaesthesia to grade the extent and severity of injury. Aim: To determine a correlation between the 99mTc …
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Retrospektive Studie zum Konzept der morphologie- und funktionsgerechten Schilddrüsenchirurgie der benignen Struma und der nuklearmedizinischen Nachsorge nach dem "Würzburger Nachsorge-Schema nach Schilddrüsen-Operationen"
… quantitativer Schilddrüsenszintigraphie mit Tc-99m ermittelt. ERGEBNISSE: Die Analyse der OP-Verfahren zeigt einen klaren Trend zu radikalen Verfahren. Es wurden zu 50% Hemithyreoidektomien gegenüber nur 7% Knotenenukleationen durchgeführt. Knotenfrei waren postoperativ mind. 84% der …
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Simple Tests for Assessing Kidney and Cardiovascular Function in Chromic Kidney Disease Patients (Stages 2, 3 and 4)
… diethylenetriaminepentaacetatic acid (Tc-99m) measured GFR (mGFR) of KFR in 19 CKD Stage 3 and 21 CKD Stage 4 patients yielded good agreement. KFR was not correlated with baseline kidney function. Eight CKD Stage 3 (42%) and 11 CKD Stage 4 (52%) subjects reached their lowest serum CysC …
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Efficacy of single fixed dose of radioiodine (I-131) therapy in patients with hyperthyroidism at Groote Schuur Hospital
… retrieved and documented. The images of their Tc-99m sodium pertechnetate thyroid scans were also retrieved and reprocessed. Results: The records of 409 patients treated between April 2010 and November 2017 were retrieved. 223 (63%) patients were referred by the endocrine clinic at Groote …
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Aspects of paediatric gastro oesophageal scintigraphy
… of various ages, after swallowing non- absorbed Tc-99m compounds. Other contributions are a scintigraphic means to allow recognition of the importance of oesophageal dysmotility in paediatrics, especially in the absence of GOR and its relevance to the efficacy of surgery in cases of apparent GOR. …
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