abstract: By means of the non-contact approaches recently developed for diffuse optical tomography and fluorescence molecular tomography, a method is presented that effectively removes the contribution of the boundaries on the measurements. This is achieved by deriving a function that transforms the signals captured from a bounded medium to measurements that would have been obtained if no boundary was present. This approach opens new possibilities in tomographic imaging as it eliminates the need for explicitly modeling boundaries in the tomographic problem and significantly simplifies reconstruction requirements. Some basic propagationbackpropagation features will be showcased to exemplify the utility of the method and discuss its impact in the field of tomography with diffusive waves.