High-Resolution Brain 18F-FDG Images Provided by Fully Digital PET

Normal brain 18F-FDG PET images, consecutively recorded on analog and fully digital PET cameras in an 85-year-old woman, are depicted herein with the reconstruction methods recommended for a 2-mm voxel size on each camera and with a high-resolution reconstruction additionally developed for digital PET with a 1-mm voxel size. An enhanced gray-to-white matter contrast was consistently documented for digital PET when compared with analog PET, and was associated with a further enhancement in spatial resolution at 1-mm voxel size, as evidenced by a much clearer delineation of cortical gyri. These high-resolution images could favor the identification of brain abnormalities. Correspondence to: Julien Salvadori, PhD, Service de Médecine Nucléaire, rue du Morvan, 54500 Vandœuvre-lès-Nancy, France. E-mail: j.salvadori89@gmail.com. Received for publication September 18, 2018; revision accepted December 25, 2018. Conflicts of interest and sources of funding: none declared. Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.

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