نتایج جستجو برای: سیستم pet

تعداد نتایج: 127874  

Journal: :asia oceania journal of nuclear medicine and biology 0
mai hong son department of nuclear medicine, tran hung dao hospital, hanoi, vietnam bui quang bieu department of nuclear medicine, tran hung dao hospital, hanoi, vietnam le ngoc ha department of nuclear medicine, tran hung dao hospital, hanoi, vietnam

objective(s): in clinical practice, approximately 10-25% of post-surgical differentiated thyroid carcinoma (dtc) patients with high serum thyroglobulin (tg) and negative 131i whole-body scan (wbs) have poor prognosis due to recurrent or metastatic lesions after radioactive iodine treatment. the purpose of this study was to evaluate the value of 18f-fdg pet/ct scan in dtc patients with high seru...

A new simple and reliable method for rapid and selective extraction and determination of trace levels of Zn(II) ion is developed. Zn(II) ions are adsorbed quantitatively during passage of aqueous samples through PET-AA/AAm nano fiber modified. Almost all matrix elements were found to pass through the nano fiber to drain. Modified Poly (ethylene terephthalate)-grafted-Acrylic acid/Acryl amide Na...

A new simple and reliable method for rapid and selective extraction and determination of trace levels of Zn(II) ion is developed. Zn(II) ions are adsorbed quantitatively during passage of aqueous samples through PET-AA/AAm nano fiber modified. Almost all matrix elements were found to pass through the nano fiber to drain. Modified Poly (ethylene terephthalate)-grafted-Acrylic acid/Acryl amide Na...

Journal: :SusMat 2023

The indiscriminate utilization of nondegradable polyethylene terephthalate (PET)-based products has triggered serious environmental pollution that to be resolved vigorously. A simple synthesis N-doped carbon nanotubes from recycled PET (NCNTsr-PET) was developed by a nitric acid-assisted hydrothermal method. Experimental results and theoretical calculations show the intrinsic defects in CNTsr-P...

حمید رجبی معماری محمد رعایایی اردکانی محمدعلی ابراهیمی نازنین ابراهیمی نهضت عبدالرسولی

زمینه و هدف: اینترفرون‌ها وسیلة دفاعی بدن علیه ویروس‌ها هستند که به سرعت در بدن تولید شده، سلول­های اطراف را به تولید پروتئین‌هایی که تکثیر ویروس را مهار، یا پاسخ ایمنی و رشد سلولی را کنترل می‌کنند، تحریک می‌کنند. با ‌توجه به اهمیت دارویی اینترفرون آلفا b2 انسانی در ایران و جهان، تولید این دارو در داخل کشور و از طریق بیوشیمیایی امکان‌پذیر اما بسیار مشکل می‌باشد. زیرا تولید این ...

2016

1. Substantial number of patients in the study underwent postoperative follow-up with PET alone instead of PET/CT. PET/CT was installed in our institution in 2009 and PET (without CT component) was used before 2009. The authors misunderstood that all the patients in this study underwent PET/CT, but recently realized that this was incorrect. PET alone may be inferior to PET/CT for detection of s...

Journal: :Medical physics 2008
Tinsu Pan Osama Mawlawi

PET/CT is an effective tool for the diagnosis, staging and restaging of cancer patients. It combines the complementary information of functional PET images and anatomical CT images in one imaging session. Conventional stand-alone PET has been replaced by PET/CT for improved patient comfort, patient throughput, and most importantly the proven clinical outcome of PET/CT over that of PET and that ...

Journal: :Physics in medicine and biology 2007
Edward J Somer Nigel A Benatar Michael J O'Doherty Mike A Smith Paul K Marsden

We have investigated improvements to PET-MR image registration offered by PET-CT scanning. Ten subjects with suspected soft-tissue sarcomas were scanned with an in-line PET-CT and a clinical MR scanner. PET to CT, CT to MR and PET to MR image registrations were performed using a rigid-body external marker technique and rigid and non-rigid voxel-similarity algorithms. PET-MR registration was als...

Journal: :Head & neck 2011
Stephan K Haerle Klaus Strobel Nader Ahmad Alex Soltermann Daniel T Schmid Sandro J Stoeckli

BACKGROUND Cystic lymph node metastasis (CLNM) is commonly found in human papillomavirus (HPV)-associated tonsillar squamous cell carcinoma (SCC). The aim of this study was to compare the accuracy in detecting cystic lymph node metastasis from tonsillar SCC between contrast-enhanced CT, ¹⁸F- fluorodeoxyglucose-positron emission tomography (FDG-PET), non-enhanced ¹⁸F-FDG-PET/CT, and contrast-enh...

Journal: :journal of food and bioprocess engineering 0
mehdi farhoodi department of food science and technology, national nutrition and food technology research institute, faculity of nutrition and food technology, shahid beheshti university of medical science, tehran, iran

nowadays polymer nanocomposites have introduced as a new class of food packaging materials due to their enhanced mechanical, thermal, and barrier properties. in this study pet nano composites were prepared by melt blending of poly (ethylene terephthalate) pellets and mica nanoparticles. the morphology of pet/mica nanocomposites was characterized by x-ray diffraction and transmission electron mi...

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