NCIt related terms : 9-(4-(18F)FLUORO-3-(HYDROXYMETHYL)BUTYL)GUANINE;
NCIt definition : A fluorine-18-labeled acycloguanosine derivative substrate for herpes simplex virus
type-1 thymidine kinase (HSV1-tk). 18F-FHBG is used as a reporter probe to image the
expression of the herpes simplex virus type-1 thymidine kinase (HSV1-tk) gene in gene
transfer therapy. HSV1-tk and HSV1-tk-metabolized 18F-FHBG co-localize, allowing positron
emission tomography (PET) localization of HSV1-tk gene-transfected tissue and the
assessment of gene transfer efficiency.;