Fig. 1. Schematic of OPT

Fig. 2. Two-dimensional function i(x,z) of slicing sample and its parallel projection Pθ(r) measured under a set of parallel rays at angle of θ

Fig. 3. Three-dimensional fluorescence imaging of OPT. (a) Autofluorescence imaging of mouse heart and lung; (b) post fertilization zebrafish with tumor cells living for 30 days; (c) brain slice of transgenic mouse (thy1-YFP)