Gammasonden zur intraoperativen Lokalisierung von radioaktiv markierten Wächterlymphknoten, Tumoren und Metastasen

Abstract

Measurement principles for gamma probes for localizing radioactively labelled tissues are described. Methods for low energy radiation emitting nuclides ( 99m Tc,140 keV) are discussed as well as for high energy radiation nuclides ( 18 F, 511 keV). Regarding the localization of 99m Tc-labelled sentinel lymph nodes minimal requirements based on defined quality criteria were derived. The quality criteria of gamma probes available in Germany were determined. As a result of this it became clear that also gamma probes are used which performance characteristics are not adapted to the situation in sentinel lymph node diagnostics. The suitability of these probes to reliably localize SLN is doubtful.