A computer system comprises a computer that includes a plurality of CPU sockets including one or more CPU cores, a crossbar switch, and a memory controller each, and memories connected under the respective plurality of CPU sockets, the plurality of CPU sockets being connected to each other. The method comprises receiving a plurality of images corresponding to a plurality of modalities, displaying to a user at a client computer a selection comprising images associated with at least two different modalities, and, in response to the user selection, simultaneously displaying at the client computer images corresponding to at least two different modalities. The invention is also a process for preparing crosslinked polymer particles. The displacement of the piston is caused by the alternating introduction of pressurizing fluid into separate actuation chambers. An engagement device includes first and second teeth projecting from a slide and a spring. A surface of the transparent anode electrode becomes as clean as a surface cleaned with ultraviolet irradiation.