다중 문턱전압을 이용한 의료 영상 기기에서의 신호 중복 보정 방법 및 그 의료 영상 기기 METHOD FOR CORRECTION PILE UP SIGNAL IN MEDICAL IMAGING DEVICE USING MULTI-THRESHOLD VOLTAGE AND MEDICAL IMAGING DEVICE THEREOF

판매 대리인 : 기율특허

전화번호 : 02-782-1004

메일주소 : kiyul@kiyul.co.kr

영문 원어  : The present invention relates to a signal processing using multiple threshold voltages comprising: a signal detector including a plurality of optical sensors to convert a flashing light signal outputted by a scintillator unit for converting radiation into a flashing light signal into an electric signal or a plurality of semiconductor sensors to convert radiation into an electric signal; an analog signal processing unit to receive an electric signal for each channel outputted by the signal detector and a plurality of preset different threshold voltages to compare the electrical signal and signals in accordance with the plurality of different threshold voltages to generate a plurality of comparison signals; and a digital signal processing unit to receive the comparison signals outputted by the analog signal processing unit, and respond to the received comparison signals to acquire reaction energy level information, reaction time information, and reaction position information of radiation. The digital signal processing unit determines whether signals are signal-redundant with redundant signals depending on whether at least one comparison signal has two or more pulses, and reconstructs reaction energy level information and reaction time information corresponding to a plurality of signals constituting signal redundancy based on a pulse width for each threshold voltage of the signal redundancy.