Short Dynamic 68 GA-PSMA PET Reconstruction to Differentiate Urinary Excretion From Extra-urinary Uptakes With LAFOV-PET.

Delhom, Ludovic; Bourhis, David; Delcroix, Olivier; Robin, Philippe; Querellou, Solène · Clin Nucl Med · 2026

case_report · Level V

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Abstract

LAFOV PET presents an excellent sensitivity, offering the ability of high-quality extra short images. We assess through a case report the additional value of performing 68 GA-PSMA-11 PET/CT dynamic acquisitions on an LAFOV PET system to improve discrimination between pathological uptakes, such as lymph nodes, from urinary physiological uptake. We performed a single-bed 4-minute list-mode acquisition, reconstructed in 4 frames of 1 minute, providing a dynamic visualization of 68 GA-PSMA-11 urinary ureteral excretion over time. This additional reconstruction is easy to implement in clinical practice, requiring no additional acquisition time or radiological exposure.

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