A real-time mapping system for tissue temperature was developed for monitoring rapid changes of excised bovine liver temperature in irradiation of YAG laser by an indepth probe.
The 7cm long thermocouples were fixed vertically in the 0.8cm thick silicone board to form a hexagonal matrix consisting of 37 points with 4.2cm diagonal length. Collection of 37 temperatures is completed by a data logger 7V13 (Nippondenki San-ei) in 1 second. Those data are transferred to a hard disk (10M) of a computer PC9800 -m2 (Nippondenki). The mapping is displayed on the screen consisting of lines which correspond to each 20°C temperature range.
One mapping formation takes 5 seconds. 6 imagings in 1/5 reduced size for time course series and 37 points in digital figures can be displayed on the screen in arbitrary phase with the date and time.
