Figure 5. Normal 99mTc-leukocyte scan. Imaging performed 4 hours post-injection shows late appearance of non-specific bowel activity in the right abdomen and urinary bladder activity.

(lacrimal glands, salivary glands, breast) and in the skeleton (Fig. 6). In normal persons, gallium is taken up by the liver (5%), spleen (1%), kidneys (2%), bone marrow (5%), and skeleton (13%). During the initial 24 hours the urine accounts for a small amount of gallium excretion (25%), and subsequent clearance proceeds

Figure 6. Normal 67Ga-gallium citrate whole body scan (left anterior, right posterior). There is normal accumulation in the liver, bone marrow and soft tissues. Uptake in the right upper quadrant of the abdomen reflects normal gut excretion.

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