ecrin-mdr-crcClinical2008Colon CancerColorectal NeoplasmsRectal CancerAnal CancerAnus NeoplasmsColon CancerColorectal NeoplasmsRectal CancerAnal CancerAnus NeoplasmsObservationalhttps://newmdr.ecrin.org/Study/2054111United States2BevacizumabECRIN MDRCompletedfalseAvastin/[18-F]-5-fluorouracil PET/CT Imaging Feasibility ProjectTo determine whether using a radiolabelled analog of 5-FU, [18F]-5-fluorouracil, for PET/CT imaging can visually demonstrate differential chemotherapy delivery to known tumor sites before and after administration of bevacizumab and determine the optimal timing of bevacizumab administration to maximize the chemotherapy delivery into the tumor for improved cancer treatment.2008-02-152054111NCT00661154