Two Cases of Legionella pneumophila Pneumonia with Prolonged Neurologic Symptoms and Brain Hypoperfusion on Single-Photon Emission Computed Tomography

Figure 1

(a) Axial diffusion-weighted magnetic resonance images of the brain in Case obtained on Day 22, revealing no abnormalities. (b) Single-photon emission computed tomography (SPECT) images of the brain using technetium-99m-ethyl cysteinate dimer, analyzed with a 3-dimensional stereotactic region of interest template (3DSRT), in Case obtained on Day 23, demonstrating multifocal hypoperfusion mainly in the frontal and temporal lobes. (c) Corresponding SPECT images of the same patient obtained on Day 65, showing improvement in hypoperfusion areas to almost normal levels.

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