This paper introduces a multiresolution tomographic algorithm to reconstruct drop-size distribution and liquid volume concentration within local regions of sprays. The reconstruction procedures allow the size of the local regions to be designed adaptively such that the reconstruction results can be obtained at multiple resolutions. The algorithm employs the strip integration together with laser diffraction measurements with overlapping beam sampling. The algorithm has been tested with both the synthetic and measured line-of-sight data of a solid-cone spray. The reconstructed results from this algorithm are in the form of local volume-weighted drop- size distributions which contain both qualitative and quantitative information of the drop-size distribution. The reconstruction results are comparable to those obtained by using the classical reconstruction techniquewith a smaller laser beam diameter. The comparison shows good agreement. Furthermore the proposed measurement technique consumed less calculation time and spent fewer working hours on measurement setup procedures.