A series of experiments on the synthesis of poly (ethylene terephthalate) (PET)/organo-montmorillonite (MMT) nanocomposites were carried out in a pressurized reactor using alkyl ammonium exchanged smectite clays, (Closite 30B).Given the degradation of organoclay at high temperatures, the in situ polymerization process was carried out at mild temperatures ranging from 210 to 230°C for 40 minutes...

OBJECTIVE The aim of the present study was to compare the performance of positron emission tomography (PET) component of PET/computed tomography (CT) with new emerging PET/magnetic resonance (MR) of the same vendor. METHODS According to National Electrical Manufacturers Association NU2-07, five separate experimental tests were performed to evaluate the performance of PET scanner of General El...

objective(s): this study aimed to compare the diagnostic values of 11c-choline and 18f-fluorodeoxyglucose (18f-fdg) positron emission tomography/computed tomography (pet/ct) in patients with cholangiocarcinoma (cca). methods: this prospective study was conducted on 10 patients (6 males and 4 females), aged 42-69 years, suspected of having cca based on ct or magnetic resonance imaging (mri) resu...

Stanford University, Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, USA Recently, a whole-body, simultaneous positron emission tomography magnetic resonance imaging (PET-MRI) system combing MRI with time-of-flight (TOF) PET has been developed. We present our initial experience with human clinical studies using 18Ffluorodeoxyglucase (FDG) with this scanner, in compa...

1. Abstract 2. Introduction 3. PET/CT in the diagnosis of osteosarcoma 3.1. PET/CT in the diagnosis of pediatric osteosarcoma 3.2. PET/CT in the differential diagnosis between osteosarcoma and mimic diseases 3.3. PET/CT in the diagnosis of rare cases 4. PET/CT in the relapse of osteosarcoma 5. PET/CT in the metastases of osteosarcoma 6. PET/CT in the histological response to neoadjuvant chemoth...

Abstract Purpose While radiotherapy (RT) for head and neck cancer (HNC) has made recent strides, RT-induced vasculitis continues to adversely affect long-term patient outcomes. Guidelines managing this complication remain scarce, supporting the need a sensitive imaging modality in post-treatment evaluations. In review, we discuss current literature regarding 18 F-fluorodeoxyglucose positron emi...

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...

Introduction: All of the Imaging modalities have advantages and disadvantages alone. So if we want to have the best and perfect image, combining these modalities produces something we desired. PET-MR images consist of morphologic and metabolic data. MRI and PET provide high spatial and contrast resolution and high sensitivity and molecular information respectively. Hybrid PET-...