| 摘要 |
A radiation detector with temperature readout has a multicolored LED display divided into segments of zero degrees to 9 degrees centigrade colored green, 10 degrees to 19 degrees centigrade in yellow, and 20 degrees to 100 degrees centigrade in red. Alternatively, two red segments are provided for ranges of 20 degrees to 64 degrees centigrade and 65 degrees centigrade and above, respectively. The radiation detector is automatically zeroed at ambient upon use and provides a readout of temperature rise above ambient throughout a scan of a subject. In one design, only one LED for each segment of the display is illuminated at a time. An audible signal is sounded at an increasing pulse frequency as the display is illuminated from the green segment to the red segment of measured temperature rise above ambient with a constant tone for temperature rises above about 20 degrees centigrade. In an alternative design a timing circuit allows the detector to self operate for a predetermined length of time. The detector sounds a 'beep' tone before automatically shutting itself off. A window made of germanium covers the radiation sensor and filters out wavelengths not of interest.
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