نتایج جستجو برای: pet ct

تعداد نتایج: 169329  

Journal: Iranian Journal of Nuclear Medicine 2007
Mohsen Beheshti, Reza Vali Robert Dudczak Shuren Li Werner Langsteger Wolfgang Schima

  Introduction: Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the gastrointestinal tract. GIST has been shown to over-express c-KIT (CD117), the receptor tyrosine kinase. Imatinib (STI571 or Glivec) is a new type of tyrosine kinase inhibitor that selectively inhibits various tyrosine kinases and has been successfully used to trea...

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Journal: Iranian Journal of Nuclear Medicine 2009
Arman Rahmim George Loudos Mohammad Reza Ay Mojtaba Shamsaie Zafarghandi Parham Geramifar,

  Combined PET/CT scanners now play a major role in medicine for in vivo imaging in oncology, cardiology, neurology, and psychiatry. As the performance of a scanner depends not only on the scintillating material but also on the scanner design, with regards to the advent of newer scanners, there is a need to optimize acquisition protocols as well as to compare scanner ...

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Journal: Asia Oceania Journal of Nuclear Medicine and Biology 2016
Boon Nang Lee, Chin Yeen Boey, Teik Hin Tan,

Objective(s): The present study aimed to evaluate the role of pretherapeutic 18fluorine-fluorodeoxyglucose positron emission tomographycomputed tomography (18F-FDG PET-CT) and maximum standardized uptake value (SUVmax) in guiding the treatment strategy and predicting the prognosis of esophageal carcinoma, using the survival data of thepatients.Methods: The present retrospective, cohort study wa...

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Journal: Iranian Journal of Nuclear Medicine 2020
Eshetu Ejeta Cheka, Eyachew Misgana Tegaw, Getu Ferenji Tadesse, Mohammad Reza Ay, Pardis Ghafarian, Parham Geramifar, Ramin Sadeghi, Seifu Gizaw Feyisa,

Introduction:The accuracy of positron emission tomography with computed tomography (PET/CT), positron emission mammography (PEM), and breast specific-gamma imaging (BSGI) in diagnosing breast cancer has never been systematically assessed, the present systematic review was aimed to address this issue.  Methods:PubMed, Scopus and EMBASE were searched for st...

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Journal: :Journal of Neuroendocrinology 2021

The present study aimed to assess gadoxetate disodium contrast-enhanced (CE) positron emission tomography (PET)/magnetic resonance imaging (MRI) with 68Ga-DOTATOC and 11C-5-Hydroxy-tryptophan (11C-5-HTP) in comparison iodine CE 68Ga-DOTATOC-PET/computed (CT) for neuroendocrine tumour imaging. Detection rate reader's confidence were evaluated each separate image volume: CE-CT, CE-MRI including d...

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Journal: :asia oceania journal of nuclear medicine and biology 0
canh nguyen unit of pet/ct and cyclotron, choray hospital, vietnam huy nguyen department of liver tumor, choray hospital, vietnam tan ngo unit of pet/ct and cyclotron, choray hospital, vietnam simone maurea dipartimento di scienze biomediche avanzate, facoltá di medicina e chirurgia, università degli studi di napoli federico ii, italia

objective(s): in this study, we aimed to describe the characteristics of portal vein tumor thrombosis (pvtt), complicating hepatocellular carcinoma (hcc) in contrast-enhanced fdg pet/ct scan. methods: in this retrospective study, 9 hcc patients with fdg-avid pvtt were diagnosed by contrast-enhanced fluorodeoxyglucose positron emission tomography/computed tomography (fdg pet/ct), which is a comb...

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Journal: Asia Oceania Journal of Nuclear Medicine and Biology 2019
Atsushi Teramoto, Hiroshi Fujita, Hiroshi Toyama, Kazuyoshi Imaizumi, Kuniaki Saito, Masakazu Tsujimoto, Takahiro Inoue, Tetsuya Tsukamoto,

Objective(s): Positron emission tomography/computed tomography (PET/CT) examination is commonly used for the evaluation of pulmonary nodules since it provides both anatomical and functional information. However, given the dependence of this evaluation on physician’s subjective judgment, the results could be variable. The purpose of this study was to develop an automated scheme for the classific...

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ژورنال: :iranian journal of radiology 0
gulgun buyukdereli department of nuclear medicine, faculty of medicine, cukurova university, adana, turkey; department of nuclear medicine, faculty of medicine, cukurova university, ziyapasa bulvari, kurtulus mah, adana, turkey. tel: +90-5324305118, fax: +90-3224590581 yasemin aktar department of nuclear medicine, faculty of medicine, cukurova university, adana, turkey ertan kara department of public health, faculty of medicine, cukurova university, adana, turkey aysun uguz department of pathology, faculty of medicine, cukurova university, adana, turkey husnu sonmez department of general surgery, faculty of medicine, cukurova university, adana, turkey

conclusion the fdg pet/ct showed a high sensitivity and a high negative predictive value for identifying malignancies in thyroid nodules with indeterminate fnab results. therefore, the fdg pet/ct may be a helpful tool in the clinical management of these nodules. when an fdg positive lesion is detected, further examination is recommended. background thyroid nodules with indeterminate fine-needle...

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Journal: International Journal of Radiation Research 2017
A. Karimian, A. Rahmim, M.N.  Nasrabadi, N. Ahmadi,

Background: In CT systems, the machine utilizes a bowtie filter to shape the X-ray beam and remove lower energy photons. The shape of this bowtie filter is complicated and its geometry is often not available in detail. These renders the CT dose index (CTDI) to have different values in measurement versus Monte Carlo simulation studies and other analytical calculations especially in dosimetry of ...

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Journal: :iranian journal of nuclear medicine 2009
maria m d'souza rajnish sharma madhavi tripathi adhinav jaimini dinesh singh

we report an unusual case of a young male with cerebellar hemangioblastoma treated previously for medullary carcinoma of thyroid, whose pet/ct scans revealed a constellation of findings that suggested the rare von hippel lindau syndrome. the diagnosis was clinched by confirming the findings on whole body contrast enhanced computed tomography (cect) and contrast enhanced magnetic resonance imagi...

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