Oliveira, JoanaParafita, RuiBranco, Susana2017-12-152017-12-152018Oliveira J, Parafita R, Branco S. Minimisation of acquisition time in a TOF PET/CT scanner without compromising image quality. In: Tavares JM, Natal Jorge R, editors. VipIMAGE 2017: proceedings of the VI ECCOMAS Thematic Conference on Computational Vision and Medical Image Processing Porto, Portugal, October 18-20, 2017. p. 27-42. Cham: Springer; 2018.978-3-319-68195-5http://hdl.handle.net/10400.21/7708Significant improvements have been made in Positron Emission Tomography (PET) to enhance the image quality, namely, the development of time-of-flight (TOF) technology. This technique is useful to localize the emission point of the beta plus-emitter (β+) radiopharmaceutical inside the body, allowing better lesion contrast and leading to a short scan time. The main goal of this study is to investigate the shortest acquisition time without compromising the image quality in both a NEMA body phantom and patients, using a TOF PET/Computed Tomography (PET/CT) scanner and the radionuclide Gallium-68 (68Ga). Image quality parameters and quantification in terms of standardized uptake value (SUV) were acquired. A time between 45 and 60 s per bed position is proposed for future clinical practices.engPET/CTTOF68GaAcquisition timeImage qualitybook part10.1007/978-3-319-68195-5_4