نتایج جستجو برای: tc 99m trodat 1

تعداد نتایج: 2773202  

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2008
Jaroslaw B Cwikla Renata Mikolajczak Dariusz Pawlak John R Buscombe Anna Nasierowska-Guttmejer Andrzej Bator Helmut R Maecke Jerzy Walecki

UNLABELLED The imaging of neuroendocrine tumors has become one of the most significant areas in nuclear oncology. In an attempt to provide high-quality imaging and possible sensitivity at a reduced cost, time, and radiation dose, several (99m)Tc agents have been proposed. The aim of this initial study was to compare the tumor uptake and biodistribution of 2 new 6-hydrazinopyridine-3-carboxylic ...

2015
Shokufeh Pirdamooie Ahmad Shanei Masoud Moslehi

The aim of this study was the investigation of absorbed dose to the kidneys, spleen, and liver during technetium-99 m ethylene dicysteine and technetium-99 m diethylenetriaminepentaacetic acid ((99m)Tc-EC and (99m)Tc-DTPA) kidney scan. Patients who had been prepared for the kidney scan, were divided into two groups (Groups 1 and 2). The first group (Group 1) and the second group (Group 2) recei...

2012
Claudia Leite Diniz Fernanda Santos do Carmo Danielle Santos de Almeida Sebastião David Santos-Filho Sotiris Missailidis Adenilson de Souza Bernardo Filho

This study evaluates the effects of an acute treatment with a Centella asiatica (CA) extract on the biodistribution of the radiopharmaceutical NaTcO4 and on the fixation of technetium-99m on blood constituents. Wistar rats were treated with CA extract and, 1 hour after, NaTcO4 was administered; organs/tissues were withdrawn and weighted. The radioactivity was counted to calculate the percentage...

2014
Bonny Gerson James R. Ballinger Robert H. Reid

Leukocytes labeled with technetium-99m using pretinning with stannous complexes of pyrophosphate, glucoheptonate, and gentisic acid were compared with respect to labeling efficiency, time required for labeling, in vitro cell viability, initial lung transit, and image quality following reinjection into normal volunteers. Gentisic acid pretinning was the best method, offering the shortest prepara...

Journal: :Circulation 1969
D T Mason W L Ashburn J C Harbert L S Cohen E Braunwald

The recent development of the instantaneously sensing Anger scintillation camera, capable of recording wide-field radioisotope images from the precordium, and a system for video storage and analysis has provided a means of visualizing the anatomic and hemodynamic features of the heart and great vessels without the hazards involved in introducing a radiopaque agent. Sodium pertechnetate (ODmTc04...

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...

2016
Shimpei Iikuni Masahiro Ono Hiroyuki Watanabe Kenji Matsumura Masashi Yoshimura Hiroyuki Kimura Hatsue Ishibashi-Ueda Yoko Okamoto Masafumi Ihara Hideo Saji

Cerebral amyloid angiopathy (CAA), characterized by the deposition of amyloid aggregates in the walls of cerebral vasculature, is a major factor in intracerebral hemorrhage and vascular cognitive impairment and is also associated closely with Alzheimer's disease (AD). We previously reported (99m)Tc-hydroxamamide ((99m)Tc-Ham) complexes with a bivalent amyloid ligand showing high binding affinit...

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 ...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2004
Kengo Hatada Laurent M Riou Mirta Ruiz Yoshihiro Yamamichi Adriano Duatti Ronaldo L Lima Allen R Goode Denny D Watson George A Beller David K Glover

UNLABELLED (99m)Tc-[bis (dimethoxypropylphosphinoethyl)-ethoxyethylamine (PNP5)]-[bis (N-ethoxyethyl)-dithiocarbamato (DBODC)] nitride (N-PNP5-DBODC or N-DBODC5) is a new monocationic myocardial perfusion tracer. We sought to compare the myocardial uptake and clearance kinetics and organ biodistribution of (99m)Tc-N-DBODC5 with (99m)Tc-sestamibi and (99m)Tc-tetrofosmin. METHODS Seventy-five a...

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...

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