Dynamic PET imaging with ultra-low-activity of 18F-FDG: unleashing the potential of total-body PET.

Total-body PET/CT using half-dose FDG and compared with conventional PET/CT using full-dose FDG in lung cancer. The scanner has a 194 cm axial field-of-view for PET imaging provided by > 500,000 detector elements, as well as an 80-row, 160-slice CT scanner for anatomical imaging and PET attenuation correction [[3]], and was later called the uEXPLORER PET/CT scanner (United Imaging Healthcare Co., Ltd.). This CT scan was used for attenuation coefficient (AC) instead of disease diagnosis, with its effective radiation dose (~ 2.4 mSv) being significantly lower than a typical diagnostic body CT exam and the CT component of a typical modern PET/CT exam (~ 5-10 mSv) [[13]-[15]]. [Extracted from the article]