A computerized system for monitoring measurement on a tissue portion, the system comprising: (i) a processor configured to communicate with a measurement probe to receive and process input data comprising user inputs defining groups and data indicative of measured tissue properties in locations within a tissue region; (ii) a display device that displays a graphical user interface connected to the processor; wherein the processor comprises: (a) a group definition module configured and operable to accept said user input data defining groups including start and end of each group according to user grouping of selected locations into groups relating to the locations on the tissue portion that are to be measured during a measurement session; (b) a data receiver configured and operable to receive said data from the measurement probe indicative of a plurality of individual measurement input datum from one or more measurements on the tissue portion being measured during a measurement session; (c) a grouping module operably connected to the group definition module and to the data receiver, the grouping module being configured and operable to process the accepted user input data including the start and end of each group according to the user grouping of the selected locations to be measured, and process the plurality of individual measurement input datum being measured between the start and end of the group, and assign each of the individual measurement input datum to one of said groups to produce grouped data associating the plurality of individual measurement input datum measured during each measurement session with the corresponding user selected locations; and (d) an output module operably connected to the grouping module and being configured and operable to output the grouped data, for each measurement session in said GUI to display on the display device data about the tissue properties in the user selected locations being measured during the measurement sessions. (i) a processor configured to communicate with a measurement probe to receive and process input data comprising user inputs defining groups and data indicative of measured tissue properties in locations within a tissue region; (ii) a display device that displays a graphical user interface connected to the processor; (a) a group definition module configured and operable to accept said user input data defining groups including start and end of each group according to user grouping of selected locations into groups relating to the locations on the tissue portion that are to be measured during a measurement session; (b) a data receiver configured and operable to receive said data from the measurement probe indicative of a plurality of individual measurement input datum from one or more measurements on the tissue portion being measured during a measurement session; (c) a grouping module operably connected to the group definition module and to the data receiver, the grouping module being configured and operable to process the accepted user input data including the start and end of each group according to the user grouping of the selected locations to be measured, and process the plurality of individual measurement input datum being measured between the start and end of the group, and assign each of the individual measurement input datum to one of said groups to produce grouped data associating the plurality of individual measurement input datum measured during each measurement session with the corresponding user selected locations; and (d) an output module operably connected to the grouping module and being configured and operable to output the grouped data, for each measurement session in said GUI to display on the display device data about the tissue properties in the user selected locations being measured during the measurement sessions.