CAJ | 학술논문

背景:术前评估肝脏储备功能可以让医生得到充分的肝脏信息,从而制定下一步的治疗计划.吲哚青绿排泄试验因为其具有简单、创伤少等优点,被证明是一种有效的预测患者肝储备功能的方法.目的:设计基于吲哚青绿排泄法的便携式肝储备功能测试系统.方法:依据组织对红外光吸收的不同以及脉动选择不同波长 LED,选择 ARM9平台,设计外围硬件以及探头,并在 Window CE 系统下设计系统的软件程序,进行整机效果验证.结果与结论:便携式肝储备功能测试系统可以无创、实时的提供吲哚青绿15 min 滞留率以及血氧饱和度等人体信息,系统采用三波长 LED 照射手指,并利用光电传感器采集透过手指的光强,软件方面采用数字滤波器及自学习阈值法去除干扰信号.实验证明该系统信号可靠、稳定,效果良好,具有实用性.
배경:술전평고간장저비공능가이양의생득도충분적간장신식,종이제정하일보적치료계화.신타청록배설시험인위기구유간단、창상소등우점,피증명시일충유효적예측환자간저비공능적방법.목적:설계기우신타청록배설법적편휴식간저비공능측시계통.방법:의거조직대홍외광흡수적불동이급맥동선택불동파장 LED,선택 ARM9평태,설계외위경건이급탐두,병재 Window CE 계통하설계계통적연건정서,진행정궤효과험증.결과여결론:편휴식간저비공능측시계통가이무창、실시적제공신타청록15 min 체류솔이급혈양포화도등인체신식,계통채용삼파장 LED 조사수지,병이용광전전감기채집투과수지적광강,연건방면채용수자려파기급자학습역치법거제간우신호.실험증명해계통신호가고、은정,효과량호,구유실용성.
@@@@BACKGROUND: Preoperative evaluation of hepatic reserve function can offer the message of liver to make the treatment plan early. Indocyanine green excretion test is easy and less-invasive, and has been proved to be an effective method to predict patient’s hepatic reserve function. OBJECTIVE: To design a hepatic reserve function testing system based on indocyanine green excretion test. METHODS: Different wavelength light emitting diode was selected based on human organization’s pulse and absorption of infrared light. The peripheral circuits and probe were designed and the ARM9 platform was selected as the micro-computer in the hardware part; the program was designed in Windows CE in the software part. And the whole system was tested through early experiment.RESULTS AND CONCLUSION: Portable hepatic reserve function testing system could noninvasive and real-time provided the 15 minutes indocyanine green retention rate and blood oxygen saturation. The system used a three-wavelength light emitting diode to light the finger, and used the photoelectric sensor to col ect light intensity through the finger. The digital filters and self-learning threshold method were used to remove the interference signal. The experiments show that the system signal is reliable, stable and good effect with practicality.