RT Journal Article SR Electronic T1 Added Value of Digital Over Analog PET/CT: More Significant as Image Field of View (FOV) and Body Mass Index (BMI) Increases JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP jnmt.120.244160 DO 10.2967/jnmt.120.244160 A1 Shirin Hatami A1 Sarah A. Frye A1 Anna McMunn A1 Crystal Botkin A1 Razi Muzaffar A1 Kara M Christopher A1 Medhat Osman YR 2020 UL http://tech.snmjournals.org/content/early/2020/09/03/jnmt.120.244160.abstract AB Background: the digital positron emission tomography/computer tomography (PET/CT) scanner with digital photon counting (DPC) technique promises a shorter scan time, improved small lesion detectability, and reduced radiation dose for the PET and CT portions of the exam, while improving image quality. Methods: in this single-institution retrospective review study, 84 participants that had undergone PET/CT exams on both the Philips analog and digital scanners were analyzed. The aim was to evaluate the impact of image field of view (FOV) and body mass index (BMI) on the digital compared to the analog PET/CT scanner. The participants were categorized into different groups based on their BMIs. Total scan times, fluorodeoxyglucose (FDG) doses, and deep length product (DLP) were collected and compared. Results: the results revealed that the digital scanner has a shorter scan time, less DLP, and requires less FDG dose when compared to the analog scanner. The most impactful difference in scan time, DLP, and FDG dose were observed in the obese and overweight participants.