A method, system and program product are presented for enabling a session, as defined by a series of related transactions to perform a unit of work, to be created between a client and a particular server where the server is managed by a dispatcher. The invention comprises writing at least one data track on a magnetic tape, wherein the data track is written in a location determined by tracking a servo track on the tape. This automatic sensing may also be useful if power sources change characteristics over time or if devices may be connected to different power sources over time. An imaging technology is used to identify the undesired tissue, and the vascular structures associated with the undesired tissue.