نتایج جستجو برای: tc pertechnetate

تعداد نتایج: 30030  

2009
LL Travaini G Trifiro G Paganelli

We report the case of a 71-year-old woman who was referred to our institute with a solid nodule in the right thyroid lobe and hypercalcemia. Ultrasound revealed a well-vascularized right thyroid nodule that was identified as a cold area by (99m)Tc-sodium pertechnetate scan. Fine-needle aspiration showed a follicular lesion and blood tests revealed hypercalcemia and hyperparathyroidism. A (99m)T...

Journal: :Clinical cancer research : an official journal of the American Association for Cancer Research 1999
G L Griffiths D M Goldenberg F Roesch H J Hansen

The goal of this work was to test whether an antibody-based agent approved for use as a single-photon-emitting imaging agent when radiolabeled with technetium-99m could be labeled comparably with a positron-emitting nuclide, technetium-94m. "Instant kits" containing lyophilized NP-4 antibody Fab' fragment of an anticarcinoembryonic antigen IgG (CEA-Scan) from the same manufactured lot were reco...

Journal: :Annals of nuclear medicine 2005
Ozgur Karacalioglu Alper Sonmez Seyfettin Ilgan Kenan Soylu Ozdes Emer Mehmet Ozguven

A 21-year-old patient with long-standing inferior vena cava obstruction secondary to idiopathic thrombosis extending from the external iliac veins underwent a radionuclide venography with Tc-99m pertechnetate labeled erythrocytes. The blood pool phase of the study revealed bilaterally distorted inferior epigastric veins mimicking normal venous flow pattern. The authors present this case to disc...

Violet Amirjalali

During the 6-m period, 24 patients with acute scrotal pain were referred to the Nuclear Medicine Department of Shaheed Labbafi-Nejad hospital. Their age ranged from 9 to 84 (mean 28.8) years. Twelve scans were selected for the study. The scans were performed on angiographic and static phases, using Tc-pertechnetate. Of the above mentioned cases, one had acute testicular torsion (pre and p...

Journal: :Environmental science & technology 2008
T Peretyazhko J M Zachara S M Heald R K Kukkadapu C Liu A E Plymale C T Resch

Under oxic conditions, Tc exists as the soluble, weakly sorbing pertechnetate [TcO4-] anion. The reduced form of technetium, Tc(IV), is stable in anoxic environments and is sparingly soluble as TcO2 x nH2O(s). Here we investigate the heterogeneous reduction of Tc(VII) by Fe(II) adsorbed on Al (hydr)oxides [diaspore (alpha-AlOOH) and corundum (alpha-Al2O3)]. Experiments were performed to study t...

Journal: :Hellenic journal of nuclear medicine 2007
Antonios Zanglis Dimitrios Andreopoulos Nikolaos Baziotis

Radiopharmaceuticals are known to interact with the blood components (i.e. the red blood cells, serum proteins etc) but so far, there have been no data regarding their purely mechanical trapping in thrombi. The experiments presented in this communication provide evidence that the technetium-99m labeled albumin macroaggregate ((99m)Tc-MAA), apparently due to its particle size, can be almost quan...

Journal: :Environmental science & technology 2011
Andrew E Plymale James K Fredrickson John M Zachara Alice C Dohnalkova Steve M Heald Dean A Moore David W Kennedy Matthew J Marshall Chongmin Wang Charles T Resch Ponnusamy Nachimuthu

The fate of pertechnetate ((99)Tc(VII)O(4)(-)) during bioreduction was investigated in the presence of 2-line ferrihydrite (Fh) and various dissimilatory metal reducing bacteria (DMRB) (Geobacter, Anaeromyxobacter, Shewanella) in comparison with TcO(4)(-) bioreduction in the absence of Fh. In the presence of Fh, Tc was present primarily as a fine-grained Tc(IV)/Fe precipitate that was distinct ...

Journal: :Journal of Nuclear Medicine Technology 2021

This multicenter study aimed to determine the reproducibility of quantitative SPECT images reconstructed using a commercially available method ordered-subset conjugate-gradient minimization. Methods: A common cylindric phantom containing 100 kBq/mL concentration 99mTc-pertechnetate solution in volume 7 L was scanned under standard imaging conditions at 6 institutions local cli...

2013
Mostafa Erfani Alireza Doroudi Leila Hadisi Ali Andishmand Seyed Mohammad Mazidi

Introduction: The use of radiopharmaceuticals is a powerful tool in the management of patients with infectious or inflammatory diseases in nuclear medicine. In this study ofloxacin as a second-generation fluoroquinolone is used to design a desired infection imaging agent after labeling with Tc via direct labeling. Methods: Ofloxacin was radiolabeled with Tc using different concentrations of lig...

Journal: :Hellenic journal of nuclear medicine 2008
Bhagwant Rai Mittal Raghava Kashyap Anish Bhattacharya Baljinder Singh Bishan Dass Radotra Katragadda Lakshmi Narasimha Rao

Meckel's diverticulum (MD) is the most common congenital gastrointestinal anomaly. About 50% of diverticulae contain ectopic gastric mucosa. Gastric mucosal secretions can cause peptic ulceration resulting in pain, bleeding and perforation. Technetium-99m ((99m)Tc) pertechnetate scintigraphy is helpful in diagnosing ectopic gastric mucosa. We have conducted a retrospective analysis of scintigra...

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