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A new method for granulocyte labeling with technetium-99m: preliminary results in abscess detection.

A new method for 99mTc-labeling of granulocytes for clinical routine use has been developed. The labeling is simple to perform by means of a kit of radiopharmaceutical quality, utilizing dihydroxy-benzoic acid. Pretinning techniques are avoided. The technique has been applied clinically in 15 patients with indications of intra-abdominal abscess. In six patients, [99mTc]granulocyte scintigraphy at 3 hr and/or 24 hr after i.v. administration, correctly depicted the abscess, as verified by subsequent surgery. In the remaining patients, who were negative at surgery or recovered without operation, all scans were negative.