نتایج جستجو برای: i 131 and tc 99m thyroid ornl mird phantom mcnpx

تعداد نتایج: 17085756  

Journal: :Internal medicine 2008
Toshio Kahara Ken-ichi Nakajima Kozo Takahashi Noriko Iwaki Takatoshi Michigishi Rika Usuda

Figure 1. Salivary gland scintigraphy performed before (March 2005) and after (August 2005) iodine-131 internal radiation therapy (I-131 IRT). Anterior images obtained at 10 and 20 minutes after intravenous injection of Tc-99m, and at 5 minutes after washout by Vitamin C are shown. Original scintigraphy was performed as a dynamic study with 1 min/frame. Significantly higher accumulation was obs...

2016
Andrew P Robinson Jill Tipping David M Cullen David Hamilton Richard Brown Alex Flynn Christopher Oldfield Emma Page Emlyn Price Andrew Smith Richard Snee

BACKGROUND Patient-specific absorbed dose calculations for molecular radiotherapy require accurate activity quantification. This is commonly derived from Single-Photon Emission Computed Tomography (SPECT) imaging using a calibration factor relating detected counts to known activity in a phantom insert. METHODS A series of phantom inserts, based on the mathematical models underlying many clini...

Journal: :Journal of Nippon Medical School = Nippon Ika Daigaku zasshi 2006
Yo Kidokoro-Kunii Naoya Emoto Keiichi Cho Shinichi Oikawa

To determine the factors associated with 20 minute Tc-99m pertechnetate thyroid uptake, we examined all patients in whom thyrotoxicosis was diagnosed at Chiba-Hokusoh Hospital, Nippon Medical School from 2001 April through 2003 March. Patients with thyrotoxicosis diagnosed during this period were 57 with Graves' disease (76%), 11 with transient hyperthyroxinemia (TH)(14.7%), and 7 with subacute...

Journal: :RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin 2015
H Korkusuz C Happel J Klebe H Ackermann F Grünwald

PURPOSE The aim of this study is to evaluate structural alterations of thyroid tissue after microwave ablation using elastography and scintigraphic imaging to investigate the applicability of these diagnostic methods for follow-up.  MATERIALS AND METHODS 35 patients with 39 thyroid nodules were evaluated using elastography and scintigraphic imaging before and after ultrasound-guided microwave...

Journal: :journal of medical signals and sensors 0
daryoush shahbazi-gahrouei mehri damoori mohammad bagher tavakoli masoud moslehi

to improve the accuracy of the activity quantification and the image quality in scintigraphy, scatter correction is a vital procedure. the aim of this study is to compare the accuracy in calculation of absorbed dose to patients following bone scan with 99m tc-marked diphosphonates ( 99m tc-mdp) by two different methods of background correction in conjugate view method. this study involved 22 pa...

Journal: :Journal of B.U.ON. : official journal of the Balkan Union of Oncology 2013
Xia Lu Lingzhou Zhao Tian Xue Huabei Zhang

PURPOSE The (131)I-tRRL small peptide probe has been identified in our previous study as a robust tumor molecular radiopharmaceutical that specifically binds to tumor-derived endothelial cells. In this study we developed a smaller structure cyclic tRRL (g2) radiolabeled with (99m)Tc as a novel and optimized peptide probe on tumor angiogenesis molecular imaging. METHODS Both tRRL (g2) and cont...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2013
Yuni K Dewaraja Michael Ljungberg Alan J Green Pat B Zanzonico Eric C Frey Wesley E Bolch A Bertrand Brill Mark Dunphy Darrell R Fisher Roger W Howell Ruby F Meredith George Sgouros Barry W Wessels

The reliability of radiation dose estimates in internal radionuclide therapy is directly related to the accuracy of activity estimates obtained at each imaging time point. The recently published MIRD pamphlet no. 23 provided a general overview of quantitative SPECT imaging for dosimetry. The present document is the first in a series of isotope-specific guidelines that will follow MIRD 23 and fo...

Journal: :Revista espanola de medicina nuclear e imagen molecular 2012
V M Pachón-Garrudo J I Cuenca-Cuenca J Ruiz-Franco-Baux I Borrego-Dorado J L Tirado-Hospital E Navarro-González R Vázquez-Albertino

OBJECTIVE This study has aimed to analyze the evolution of patients diagnosed with differentiated thyroid carcinoma (DTC) with a negative (131)I-Na whole body scan (WBS), high levels of serum thyroglobulin (Tg) and negative (18F)fluorodeoxyglucose positron emission tomography (PET-FDG) study. MATERIAL AND METHODS Twenty-three patients diagnosed and treated for DTC were studied retrospectively...

2014
Armaghan Fard-Esfahani Babak Fallahi Mohammad Karimi Davood Beiki Mohsen Saghari Alireza Emami-Ardekani Pezhman Fard-Esfahani Mojtaba Ansari Mohammad Eftekhari

Introduction: High-dose radioactive iodine therapy in differentiated thyroid cancer (DTC) may adversely affect the salivary gland function. This study is aimed to evaluate the effect of radioactive iodine (RAI) with dose of 100 mCi in DTC patients compared to lower doses of less than 30 mCi in hyperthyroid cases. Methods: Fifty four patients (13 men and 41 women) age: 42.3±14.3 (21-71) years we...

Journal: :Seminars in nuclear medicine 2016
Amir Reza Jalilian Davood Beiki Arman Hassanzadeh-Rad Arash Eftekhari Parham Geramifar Mohammad Eftekhari

During past 3 decades, nuclear medicine has flourished as vibrant and independent medical specialty in Iran. Since that time, more than 200 nuclear physicians have been trained and now practicing in nearly 158 centers throughout the country. In the same period, Tc-99m generators and variety of cold kits for conventional nuclear medicine were locally produced for the first time. Local production...

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