Related by context. Frequent words. (Click for all words.) 66 radiotracer 61 fluorescent dye 57 microbubbles 56 ultraviolet UV light 55 photometer 55 fluorescence 54 iron oxide nanoparticles 54 fluoresces 54 ultra violet light 54 near infrared NIR 54 porphyrin 54 Ultraviolet light 54 technetium 53 tracer 53 magnetic nanoparticles 53 nanoshells 53 microparticles 53 magnetic resonance spectroscopy 52 fluorescent 52 gold nanorods 52 radioactive isotope 52 fluorescence imaging 52 near infrared spectroscopy 52 microelectrodes 52 fluorescent dyes 51 H#O# 51 Fluorescence 51 laser ablation 51 luciferase 51 fluorescent proteins 51 collimator 51 ultrasonic waves 51 photodynamic therapy 51 UV light 50 gamma radiation 50 Doppler ultrasound 50 radioiodine 50 SPECT 50 chromophores 50 nano particle 50 micelles 50 radioisotope 50 magnetic pulses 49 infrared rays 49 fluorescent protein GFP 49 dissolve blood clots 49 Fluorescent 49 frequency comb 49 PET scanners 49 FDG 49 chloride ions 49 fluorescing 49 situ hybridization 49 nanospheres 49 ultraviolet light 49 mass spectroscopy 49 fluorophores 49 fluoresce 49 ionised 48 retinal cells 48 optical coherence tomography 48 detector 48 analyte 48 quantum dots 48 dsRNA 48 molecule 48 X ray beam 48 chloroplasts 48 fluorescent protein 48 dopant 48 Light Emitting Diodes 48 non invasively 48 confocal microscopy 48 dialysate 47 methylene chloride 47 immunohistochemical 47 fluorescent light 47 dye molecules 47 neuroblastoma cells 47 malignant cells 47 photonic crystal 47 colorimetric 47 pulsed laser 47 absorbance 47 photocatalytic 47 leukocyte 47 ultraviolet 47 MeV 47 fibroblast cells 47 photodiodes 47 radioactive isotopes 47 tumor cells 47 cytoplasmic 47 iontophoresis 47 infrared laser 47 calcitriol 47 Quantum dots 47 intense pulsed 47 rubidium 47 radiopharmaceuticals 47 microspheres