18F-FDG Imaging of a Case of Disseminated Nocardiosis.

Nocardiosis is an uncommon infection caused by ubiquitous environmental aerobic gram-positive filamentous bacteria, present in soil and water. Skin and lungs are usually the main targets of localized infections. Rarely, disseminated forms can occur in immunocompromised individuals.

Physiological Whole-Brain Distribution of [F]FDOPA Uptake Index in Relation to Age and Gender: Results from a Voxel-Based Semi-quantitative Analysis.

Purpose: 6-[F]fluoro-L-DOPA ([F]FDOPA), a positron emission tomography (PET) amino-acid tracer of brain decarboxylase activity, is used to assess the brain dopaminergic system. Using a voxel-based semi-quantitative analysis, this study aimed to determine whether a current brain uptake index of [F]FDOPA, expressed relative to the occipital background level, varies according to age and gender.

Procedures: One hundred and seventy-seven subjects were retrospectively included.