Bitplane, part of Andor Technology plc, has released its Imaris 7.3 image processing, analysis and visualization software. New capabilities include segmentation functions in ImarisCell, advanced filters in Imaris MeasurementPro and further expansion of ImarisXT. The new features enhance the performance of existing Imaris systems, rendering them suitable for 3- and 4-D microscopy visualization and analysis. The new version extends the analysis of relationships between cells and cellular components via plasma membranes for segmentation of cells. With cellular organelles treated as biologically meaningful units, users can detect and analyze multiple populations of vesicles inside cells. Imaris MeasurementPro offers a new array of flexible filters to measure and visualize the similarity between segmented objects.