نتایج جستجو برای: 18 (18f)

تعداد نتایج: 361982  

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی تهران 0

در اولین بخش ، سنتز و کنترل کیفی [18f]-2 فلوئورو-داکسی گلوکز، مهمترین رادیو داروی مورد استفاده تشخیصی حاوی فلوئور-18 مورد بررسی قرار گرفت . هر چه سلول فعال تر باشد. مصرف گلوکز بیشتر بوده و تصویر شدت بیشتری دارد. n-[f18] سوکسینیمیدیل-4-(فلوئورومتیل بنزوات طی چند مرحله واکنش داغ و سرد در آزمایشگاه با بکارگیری کاتالیست انتقال فاز کریپتوفیکس 222-18f سنتز شد، با نشاندار سازی پروتئینهائی مثل آنتی باد...

 Objective(s): 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET-CT) is a well-used and established technique for lung cancer staging. Radiation therapy requires accurate target volume delineation, which is difficult in most cases due to coexisting atelectasis. The present study was performed to compare the 18F-FDG PET-CT with contrast enhanced computed tomogr...

2017
H. C. Rischke A. L. Grosu

2 Radiotracers ......................................................................... 16 2.1 11C-Choline, 18F-Choline .................................................... 16 2.2 11C-Acetate ........................................................................... 16 2.3 18F-Fluorodeoxyglucose (FDG) ........................................... 17 2.4 18F-Fluoride ...............................

Journal: :iranian journal of nuclear medicine 2004
amir reza jalilian mohammad mirzaie pezhman rowshanfarzad mohammad reza ensaf alireza karimian

[18f]kf, considered as a reference standard for positron emission tomography of the skeletal system, was produced by the bombardment of enriched water ([18o]h2o>95%) with high energy protons in nrcam cyclotron. after the extraction of fluoride from enriched water as kf, and passing it through microbial filter and fine adjustment of acidity and osmolality, it was converted into an injectable for...

Journal: :International journal of radiation applications and instrumentation. Part A, Applied radiation and isotopes 1991
P K Chakraborty M R Kilbourn

The synthesis of 4-[18F]fluoroguaiacol (4-[18F]fluoro-2-methoxyphenol) has been achieved in no-carrier-added form starting from 2-methoxy-4-nitrobenzaldehyde, using nucleophilic aromatic substitution by [18F]fluoride followed by Baeyer-Villiger oxidation of the benzaldehyde to the phenol. Demethylation with boron tribromide gave 4-[18F]fluorocatechol (1,2-dihydroxy-4-[18F]fluorobenzene) with an...

2017
Archana Prathipati Ranadheer Gupta Manthri Bala Venkat Subramanian Pranabandhu Das Swapna Jilla Sangeetha Mani Anitha Kumari J. Settipalli Sarala Radhika Kottu Tek Chand Kalawat Kotiyala Venkata Jagannath Rao Naidu

OBJECTIVES 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET-CT) is a well-used and established technique for lung cancer staging. Radiation therapy requires accurate target volume delineation, which is difficult in most cases due to coexisting atelectasis. The present study was performed to compare the 18F-FDG PET-CT with contrast enhanced computed tomography...

Journal: :iranian journal of nuclear medicine 0
maged abdel galil hamed radiology department, faculty of medicine, zagazig university, zagazig, egypt ahmed fathy abdel ghany radiology department, faculty of medicine, ain shams university, cairo, egypt

introduction:brain imaging with f-18 fluorodeoxyglucose (18f-fdg) positron ‎emission tomography or tc-99m hexamethylpropyleneamine oxime (‎99mtc-hmpao) spect is widely used for the evaluation of alzheimer's ‎dementia (ad); we aim to assess superiority of one method over the ‎other. methods: twenty four patients with clinical diagnosis of alzheimer disease ‎underwent 18f-fdg pet and ‎99mtc-...

An inflammatory pseudotumor (IPT) is a rare benign lesion, characterized by nonneoplastic proliferation of inflammatory cells and presence of intermingling collagen fibers. IPT commonly occurs in the lungs and orbita, while an intraspinal IPT is extremely rare. IPT can mimic both clinically and radiologically malignant processes, and making a definitive preoperative diagnosis is often difficult...

Journal: :asia oceania journal of nuclear medicine and biology 0
jin-suk kim department of nuclear medicine, konyang university hospital, daejeon, south korea shin young park department of pathology, konyang university hospital, daejeon, south korea

an inflammatory pseudotumor (ipt) is a rare benign lesion, characterized by nonneoplastic proliferation of inflammatory cells and presence of intermingling collagen fibers. ipt commonly occurs in the lungs and orbita, while an intraspinal ipt is extremely rare. ipt can mimic both clinically and radiologically malignant processes, and making a definitive preoperative diagnosis is often difficult...

2017
Kalevi Kairemo Gregory C. Ravizzini Homer A. Macapinlac Vivek Subbiah

Fluorothymidine is a thymidine analog labeled with fluorine-18 fluorothymidine for positron emission tomography (18F-FLT-PET) imaging. Thymidine is a nucleic acid that is used to build DNA. Fluorine-18 fluorothymidine (18F-FLT) utilizes the same metabolic pathway as does thymidine but has a very low incidence of being incorporated into the DNA (<1%). 18F-FLT-PET could have a role in the evaluat...

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