Determination of optimal injection dose in a small animal-dedicated positron emission tomography for non-human primate neurological studies.

Appl Radiat Isot

Division of Applied RI, Korea Institute of Radiological & Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul, Republic of Korea; Radiological and Medico-Oncological Sciences, University of Science and Technology (UST), Seoul, Republic of Korea. Electronic address:

Published: September 2024


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Article Abstract

This study aimed to determine the optimal injection dose for non-human primate positron emission tomography (PET). We first used a monkey brain phantom with a volume of 80,000 mm containing 250 MBq of [F]FDG. Next, we compared the radioactivity difference between the PET images and the actual radioactivity from the dose calibrator to determine the low-error range. We then evaluated the image quality using the NEMA-NU phantom. Finally, [F]FP-CIT PET images were obtained from two monkeys with middle and high doses. As a result, PET images with a middle injected dose generated reasonable image quality and showed a high signal-to-noise ratio in monkey brain PET with [F]FP-CIT. These results are expected to be actively applied in PET research using non-human primates.

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http://dx.doi.org/10.1016/j.apradiso.2024.111404DOI Listing

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