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. Author manuscript; available in PMC: 2013 Jan 4.
Published in final edited form as: J Nucl Med. 2012 Aug 7;53(9):1438–1445. doi: 10.2967/jnumed.112.104349

Figure 5.

Figure 5

Contrast ratio of 18F-FDG to blood and muscle. (A) Ratios of %ID/g from draining LN and blood are high, affording clear distinction between lymphatics and surrounding tissues. (B) Contrast derived from %ID/g between LN and muscle enables clear delineation of nodes. LNs not in the draining path from the injection site (inguinal and axillary) do not produce significant ratios with respect to background. From 10 to 60 min, ratio of LN to muscle drops as conscious and ambulatory mice increase muscle uptake. Inguinal (and axillary) uptake is low because these nodes are not within drainage of injection site, which drains to deep pelvic nodes