Objective To study the effect of laser induced fluorescence(LIF) on the early diagnosis of colorectal cancer and to analyze the mechanism of the production of LIF spectrum.
目的研究激光诱发荧光（LIF）技术在大肠癌早期诊断中的作用，并对LIF光谱产生的机制进行初步的探讨。
Background and Objectives: Detection of colorectal exfoliated epithelial cells and their nuclear DNA content may provide another non-invasive way of screening and early diagnosis of colorectal cancer.
背景及目的：粪便中脱落细胞及其核d NA含量的检测有可能成为大肠癌筛查及早期诊断的无创途径。
Objective Analysis of synchronous metastatic liver cancer of colorectal cancer for risk factors to improve the level of early diagnosis.
目的探讨大肠癌同期肝转移的危险因素，提高早期诊断水平。
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