18 F-FDG PET/CT Findings in Monkeypox Infection in an HIV Patient.

A 29-year-old man diagnosed with monkeypox infection underwent an 18 F-FDG PET/CT for the study of organic involvement in the context of a nonsatisfactory clinical evolution. He had a history of HIV (with undetectable viral load). FDG PET/CT showed multiple hypermetabolic lymphadenopathies and bilateral pulmonary nodules with mild 18 F-FDG uptake.

Static first-minute-frame (FMF) PET imaging after F-labeled amyloid tracer injection is correlated to [F]FDG PET in patients with primary progressive aphasia.

Objective: To study the correlation between a static PET image of the first-minute-frame (FMF) acquired with F-labeled amyloid-binding radiotracers and brain [F]FDG PET in patients with primary progressive aphasia (PPA).

Material And Methods: The study cohort includes 17 patients diagnosed with PPA with the following distribution: 9 nonfluent variant PPA, 4 logopenic variant PPA, 1 semantic variant PPA, 3 unclassifiable PPA. Regional SUVRs are extracted from FMFs and their corresponding [F]FDG PET images and Pearson's correlation coefficients are calculated.

Effects of cranioplasty in cerebral blood perfusion using quantification with 99m-Tc HMPAO SPECT-CT.

Background And Purpose: Syndrome of the trephined or sinking skin flap syndrome is an underdiagnosed condition of craniectomized patients that usually improves after cranioplasty. Among the pathophysiological theories proposed, the changes of cerebral blood perfusion (CBP) caused by cranial defects might have a role in the neurological deficiencies observed. We aim to assess the regional cortex changes in CBP after cranioplasty with Technetium 99m hexamethylpropylene-amine oxime (99mTc-HMPAO) SPECT-CT.