نتایج جستجو برای: تکنسیوم 99m

تعداد نتایج: 11142  

Journal: :Journal of nuclear medicine technology 2014
Tyler A Dailey Michael D Berven Penny J Vroman

The goal of this teaching case study is to demonstrate the novel use of (99m)Tc-HMPAO-labeled white blood cells (WBCs) in diagnosing chronic recurrent multifocal osteomyelitis (CRMO). (99m)Tc-HMPAO-labeled white blood cells were utilized to diagnose CRMO. Classically, CRMO is evaluated scintigraphically using (99m)Tc-methylene diphosphonate/hydroxymethylene diphosphonate. (99m)Tc-HMPAO-labeled ...

Journal: :Annals of nuclear medicine 2003
Mustafa Kibar Zeynep Yapar Aytul Noyan Ali Anarat

UNLABELLED Technetium-99m dimercaptosuccinic acid (Tc-99m DMSA) as a static renal agent is currently the most frequently used agent in the detection of renal scarring, and allows accurate calculation of differential renal function (DRF). But this agent has some disadvantages such as relatively higher radiation dose and time consumption. METHODS The purpose of this study was to evaluate the po...

ژورنال: :تحقیقات بالینی در علوم پیراپزشکی 0
سمیرا رسانه گروه رادیوایزوتوپ، پژوهشگاه علوم و فنون هسته ای، سازمان انرژی اتمی ایران، تهران، ایران.سازمان اصلی تایید شده: سازمان انرژی اتمی (atomic energy organization) صالح صالحی ذهابی گروه رادیولوژی و پزشکی هسته ای، دانشکده پیراپزشکی، دانشگاه علوم پزشکی کرمانشاه، کرمانشاه، ایران.سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمانشاه (kermanshah university of medical sciences)

چکیده زمینه: انسداد قسمتی از شریان ریوی یا یکی از شاخه های آن بوسیله لخته خون آمبولی ریوی گفته میشود. تشخیص سریع این بیماری در نجات بیمار بسیار با اهمیت می باشد. روش تشخیص مناسب آمبولی، اسکن پرفیوژن ریه با کمک سیستم پزشکی هسته ای است که در حال حاضر این کار به کمک داروی آلبومین ماکروآگرگیته - تکنسیوم که ذراتی نشاندار است انجام می شود. مشکلات و سختی هایی حین ساخت و تصویربرداری این ذرات وجود دارد ...

2016
Hiroshi Watanabe Kazunari Ishii Makoto Hosono Etsuko Imabayashi Koichiro Abe Masayuki Inubushi Kazuko Ohno Yasuhiro Magata Kinya Ono Kei Kikuchi Kei Wagatsuma Tadashi Takase Kyoko Saito Yasuyuki Takahashi

OBJECTIVE The optimization of medical exposure is one of the major issues regarding radiation protection in the world, and The International Committee of Radiological Protection and the International Atomic Energy Agency recommend establishing diagnostic reference levels (DRLs) as tools for dose optimization. Therefore, the development of DRLs based on the latest survey has been required for nu...

2015
Alireza Doroudi Hamidreza Samaee Seyyed Mostafa Saadati Faramarz Ahmadi Ali Kiasat Mostafa Erfani

Ubiquicidin 29-41 (UBI 29-41) is an antimicrobial peptide with six positively charged residues which preferentially binds to the negatively charged groups present on the microbial membrane by electrostatic interaction at the foci of infection. For this reason UBI 29-41 has been suggested to label by 99m Tc ( 99m Tc-UBI 2941)directly or by using coligand reagents like 6-hydrazinopyridine 3-carbo...

2015
Do Won Hwang Hongyoon Choi Su Chul Jang Min Young Yoo Ji Yong Park Na Eun Choi Hyun Jeong Oh Seunggyun Ha Yun-Sang Lee Jae Min Jeong Yong Song Gho Dong Soo Lee

Exosomes known as nano-sized extracellular vesicles attracted recent interests due to their potential usefulness in drug delivery. Amid remarkable advances in biomedical applications of exosomes, it is crucial to understand in vivo distribution and behavior of exosomes. Here, we developed a simple method for radiolabeling of macrophage-derived exosome-mimetic nanovesicles (ENVs) with (99m)Tc-HM...

Journal: :Journal of the American College of Cardiology 1991
R M Fleming R L Kirkeeide H Taegtmeyer A Adyanthaya D B Cassidy R A Goldstein

Technetium-99m (Tc-99m) teboroxime is a new perfusion tracer that is highly extracted and rapidly cleared by the myocardium. To determine the feasibility of Tc-99m teboroxime imaging in the diagnosis of patients with suspected coronary artery disease, 30 patients underwent single photon emission computed tomography imaging with Tc-99m teboroxime (25.2 +/- 1 mCi) at peak exercise and again 60 mi...

2015
Hiroshi Wakabayashi Junichi Taki Anri Inaki Kazuhiro Shiba Ichiro Matsunari Seigo Kinuya

BACKGROUND To investigate whether an apoptotic process demonstrated by (99m)Tc-annexin-V ((99m)Tc-AV) uptake correlates with left ventricular remodeling (LVR) after myocardial infarction, we assessed (99m)Tc-AV uptake in rat model of myocardial ischemia and reperfusion. METHODS The left coronary artery (LCA) of 15 rats was occluded for 20 to 30 min, followed by reperfusion. After 2 weeks, (99...

Journal: :Journal of nuclear medicine technology 2011
Fatma J Al-Saeedi Milad Bitar Smitha Pariyani

UNLABELLED This study was done to examine the effect of asiaticoside on MCF-7 cell uptake of (99m)Tc-tetrofosmin ((99m)Tc-Tfos) and (99m)Tc-sestamibi ((99m)Tc-MIBI). METHODS The 3-(4,5-dimethylthiozol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was used to evaluate the effect of a 50% inhibitory concentration of asiaticoside on MCF-7 cell proliferation. MCF-7 cells were treated with 10,...

Journal: :The Journal of clinical investigation 1977
L M Buja A J Tofe P V Kulkarni A Mukherjee R W Parkey M D Francis F J Bonte J T Willerson

This study was performed to elucidate the localization at the cellular level of technetium-99m phosphorus ((99m)Tc-P) radiopharmaceuticals in acute myocardial infarcts and the mechanisms responsible for (99m)Tc-P uptake in acute myocardial infarcts and other tissues. In 20 dogs with proximal left anterior descending coronary arterial ligation for 1-3 days, elevated calcium levels were measured ...

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