Fig. 5
From: 18F-FDG-labeled red blood cell PET for blood-pool imaging: preclinical evaluation in rats
18F-FDG-labeled RBC PET in a temporary intraabdominal bleeding model. a Maximum-intensity-projection images in pre- (left), post- (middle) bleeding phase, and the subtracted (right) image between them. The radioactivity in the urinary bladder is seen in the images (arrows). b PET, CT, and fused PET/CT axial images at lower level of the abdomen. Intraabdominal bleeding is identified as high radioactivity in the extravascular space in the fused image (arrowheads). c Time-activity curve of extravascular radioactivity in the subtracted image. The radioactivity appeared soon after the manual puncture of the colonic wall (22 min), and then it reached a plateau about 5 min later