Fig. 4.

Radiolabeled leukocyte (^99mTc-HMPAO WBC) in a patient with suspected IE bearing aortic and mitral prosthetic valve and CIED. Planar images (right panel top-down at 30 min, 6 h, and 20 h) after the injection of the radiopharmaceutical and SPECT/CT (middle column coronal CT and superimposed SPECT/CT, left column transaxial superimposed SPECT/CT at different levels) showing pathological uptake on the lateral and medial sides of the mitral valve prosthesis (images were acquired on Discovery-670, GE Healthcare). No signs of infection are present along the CIED