FDG-PET亚型在边缘系统主导型和皮层主导型模式之间的差异较大,而MRI亚型则在萎缩的严重程度上差异较大。总之,本研究强调了使用FDG-PET和MRI成像技术可以识别出阿尔茨海默病的不同亚型,其中一些亚型表现为大脑皮层区域的退行性病变占主导,而另一些则表现为与边缘系统相关的病变。然而,虽然FDG-PET和MRI都可以用来识别...
Although (18)F-FDG PET is an established technique to assess brain glucose use, a shorter imaging time is preferable for patient convenience and increased throughput. The aim of this study was to validate a brain (18)F-FDG PET protocol more rapid than the conventional protocol. METHODS: For...
PET scan of the brain in patients with temporal lobe epilepsy. 2. Methods 2.1. Patients The study was approvedby the Institutional ReviewBoardof the Fac- ulty of Medicine, Chulalongkorn University. All patients with intractable temporal lobe epilepsy set to undergo positron emission tomography using...
Design:Fifty patients with metastatic NSCLC were included before pembrolizumab or nivolumab initiation. FDG-PET scan was performed at baseline and after 7 weeks of treatment (PETinterim1) and different criteria/parameters of ...
Dynamic PET scans in different regions of the body were performed in 49 patients so as to measure percentage uptake of18FDG in brain, liver, spleen, adrenals, kidneys and stomach. The residence time in these organs was calculated and radiation dose was estimated using OLINDA software. The ...
The optimal injected dose of FDG is considered to be 3.7–5.2 MBq/kg per body for PET/CT (with a minimum of 26 MBq) and 3.7 MBq/kg for brain PET/CT (with a minimum of 14 MBq) as a scan protocol, and a guideline is available for CT doses [7]. The dose administered should be...
This study aimed at the evaluation of A-MAP, an iterative reconstruction algorithm that was developed for PVC during the reconstruction of FDG-PET brain projection data. A-MAP was originally designed for FDG-PET imaging of epilepsy patients (Baete et al., 2004). The aim was to improve the ...
Spatial normalization is a preliminary step in any PET image analysis based on statistical parametric mapping (SPM). This step consists in applying a spatial deformation to match each PET scan to an anatomical reference template The purpose of this study was to evaluate the effect of using differe...
(APS), including patients with progressive supranuclear palsy (PSP), multiple system atrophy (MSA), and corticobasal degeneration (CBD), who underwent [(18)F]fluorodeoxyglucose (FDG)-PET and postsynaptic D2 receptor [(123)I]iodobenzamide (IBZM)-SPECT imaging at baseline to distinguish APS from...
According to current guidelines from 2005 (CBO) functional brain imaging by PET-scan of the brain has no place in the analysis of a syndrome. Differential diagnosis between and other causes of remains important because there are differences in natural course and treatment. Here we present three ...