In clinicalpractice, the technetium-99m-labeled HSA (99mTc-HSA) isthe main radiopharmaceutical for the blood pool SPECT imaging to investigatecardiac function and detect infection and gastrointestinal bleeding.28 [18F]FPG-HSA could serve as a PETimaging agent that provides improved image resolution due to the intrinsichigher resolution of PET. Here, ALB is linked to infection.