Giorgos Kontaxakis

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Respiratory motion is a major source of reduced quality in positron emission tomography (PET). In order to minimize its effects, the use of respiratory synchronized acquisitions, leading to gated frames, has been suggested. Such frames, however, are of low signal-to-noise ratio (SNR) as they contain reduced statistics. Super-resolution (SR) techniques make(More)
PURPOSE To evaluate the carbon 11 ethanol kinetics with positron emission tomography after intratumoral injection of the tracer and assess its redistribution and dilution in patients who have hepatocellular carcinomas and who were scheduled for treatment with percutaneous ethanol injection. MATERIALS AND METHODS The study included eight patients with(More)
The aim of the study was the evaluation of the detectability of treated liver metastases using one FDG-PET measurement. The study includes 42 patients (80 lesions) from different primary tumours. Standardized Uptake Values (SUV) as well as the tumour to liver Ratio (T/L) were used for evaluation. A T/L > 1.0 was considered to be pathological. Clinical(More)
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