نتایج جستجو برای: dosimetry protocols

تعداد نتایج: 108295  

2011
Mattijs Elschot Johannes Franciscus Wilhelmus Nijsen Alida Johanna Dam Hugo Wilhelmus Antonius Maria de Jong

BACKGROUND Scintillation camera imaging is used for treatment planning and post-treatment dosimetry in liver radioembolization (RE). In yttrium-90 (90Y) RE, scintigraphic images of technetium-99m (99mTc) are used for treatment planning, while 90Y Bremsstrahlung images are used for post-treatment dosimetry. In holmium-166 (166Ho) RE, scintigraphic images of 166Ho can be used for both treatment p...

Journal: :Environmental Health Perspectives 1997
J R Buchanan L T Burka R L Melnick

Toxicokinetic studies undertaken within the National Toxicology Program are intended to aid the design of toxicology and carcinogenicity studies, help interpret the results of toxicology and carcinogenicity studies with respect to the relationship between toxic effects and external exposure, and define the parameters of dose, distribution, metabolism, and elimination that can be used in human r...

2016
Daniel Gyingiri Achel Elom Achoribo Sandra Agbenyegah Rudolph M. Adaboro Shadrack Donkor Nana A. K. Adu-Bobi Akwasi A. Agyekum Felicia Akuamoa Samuel N. Tagoe Kofi A. Kyei Joel Yarney Antonio Serafin John M. Akudugu

The aim of this study was not only to obtain basic technical prerequisites for the establishment of capacity of biological dosimetry at the Ghana Atomic Energy Commission (GAEC) but also to stimulate interest in biological dosimetry research in Ghana and Sub-Saharan Africa. Peripheral blood from four healthy donors was exposed to different doses (0-6 Gy) of gamma rays from a radiotherapy machin...

Journal: :Radiation Measurements 2022

Organized by Working Group 6 “Computational Dosimetry” of the European Radiation Dosimetry (EURADOS), a group intercomparison exercises was conducted in which participants were asked to solve predefined problems computational dosimetry. The results these comparisons published series articles this virtual special issue Measurements. This paper reviews experience gained from various and highlight...

Journal: :JACC. Cardiovascular imaging 2009
Daniel S Berman Xingping Kang Balaji Tamarappoo Arik Wolak Sean W Hayes Ryo Nakazato Louise E J Thomson Faith Kite Ishac Cohen Piotr J Slomka Andrew J Einstein John D Friedman

OBJECTIVES Our purpose was to describe a novel, rapid stress thallium-201 (Tl-201)/rest technetium-99m (Tc-99m) agent myocardial perfusion imaging (MPI) protocol (Tl/Tc) with a high-speed MPI scanner and to compare this protocol with a standard rest/stress Tc-99m agent protocol (Tc/Tc) with respect to image quality and radiation dosimetry. BACKGROUND Recent advances in gamma camera technology...

Alireza Amouheidari Keyvan Jabbari, Shadi Babazadeh

Introduction Intensity Modulated Radiation Therapy (IMRT) has made a significant progress in radiation therapy centers in recent years. In this method, each radiation beam is divided into many subfields that create a field with a modulated intensity. Considering the complexity of this method, the quality control for IMRT is a topic of interest for researchers. This article is about the various ...

2009
Abiraj Keelara

Introduction: Owing to its optimal nuclear properties, ready availability, low cost and favorable dosimetry, Tc continues to be the ideal radioisotope for medical imaging applications. Most of the bifunctional chelators reported for Tc complexation, suffer from tedious labeling protocols and undesired physicochemical properties. On the other hand, bifunctional chelators based on tetraamine fram...

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