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TO THE EDITOR: There is considerable interest in preclinical imaging techniques to increase throughput and reduce costs, as evidenced by recent and former publications in the field (1–3). We write this letter to share a design for a multiple-mouse imaging platform that can be produced on a 3-dimensional (3D) printer and has been in use at our institution and several others for smallanimal PET/CT. We feel this design would likewise benefit the community, particularly at facilities that encourage do-it-yourself approaches. Our design is inexpensively manufactured with 3D printers, which are increasingly accessible at many institutions. Because of the compact size of our design, it is easy to integrate with a wide variety of scanner models and apply to various imaging configurations. We have provided the design files as supplemental materials (available at http://jnm. snmjournals. org), along with a short video …