| Literature DB >> 3181188 |
Y Abe1, T Matsuzawa, M Itoh, K Ishiwata, T Fujiwara, T Sato, K Yamaguchi, T Ido.
Abstract
Regional distribution of L-[methyl-14C] methionine (14C-MET) and 4-[18F] fluoro-antipyrine was compared using experimental rat tumors (AH109A) and a computerized autoradiogram image processor. Tissue distributions of the two tracers were found to be inhomogeneous in the tumor with nearly identical image patterns. Analysis of tissue radioactivities revealed that 82% of 14C-MET was derived from the acid insoluble fraction at 60 min after injection. The present study showed that 14C-MET uptake closely relates to tissue blood flow and may depend on its blood to tissue transport. Rapid incorporation of MET in the acid insoluble fraction implies that it is rapidly metabolized after transport into tumor tissue.Entities:
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Year: 1988 PMID: 3181188 DOI: 10.1007/bf00254390
Source DB: PubMed Journal: Eur J Nucl Med ISSN: 0340-6997