| 摘要 |
<p>PURPOSE:To obtain a blood flow monitor apparatus excellent in the response to the change of blood flow, by irradiating an object to be examined with laser beam to receive the reflected beam by a photodetector means wherein a large number of photodetector elements are arranged and storing an image signal at every output of each of the photodetector elements and operating the timewise change of memory content to display the change of a blood flow value with the elapse of time. CONSTITUTION:The output of a line sensor 2 is successively connected to a video amplifier 3, an A/D converter 4, a memory 5 and a CRT display 6 and each circuit is connected to a microcomputer 7 and operated by the output of the microcomputer 7 or performs the transmission and reception of a signal. The output of the line sensor 3, that is, the image signal thereof is amplified by the video amplifier 3 and digitalized by a high speed A/D converter 4 to accumulate data in the memory 5 and, according to the program stored in the microcomputer 7, the difference between two continuous scanning outputs in the same pixel is calculated. This operation is performed at a high speed and the operation result is hourly displayed on a CRT display as a waveform on a CRT display as a waveform or numerical value in a time-sequent manner or outputted to a recorder to make it possible to measure the change of a blood flow value with the elapse of time.</p> |
