レーザー光回折パターンを利用した計測腹腔鏡による慢性肝疾患の肝表面の解析

概要

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We measured the width and height of lesions on the liver surface of chronic liver diseases of a new peritoneoscopic measuring system, developed with cooperation of Machida Endoscope Co.. This scope emitted diffraction beams in parallel by an argon laser of 488-nm wave length. The diffraction spots on the lesion was clearly observed and pictured under ordinary illumination. Not only the width but also the height of lesions was easily measured by counting the number of spots by the order of 0.1mm. In this study, chronic diseases were classified in chronic aggressive hepatitis 2A (5 cases), chronic aggressive hepatitis 2B (6 cases), early cirrhosis (6 cases) and cirrhosis (27 cases). The results were as follows: 1) The liver surface of chronic aggressive hepatitis 2A was smooth. 2) The width of patch was 1.6±0.4mm in diameter and the depth was 0.1±0.1mm in chronic aggressive hepatitis 2B. 3) The diameter of the nodule was 3.2±0.9mm and the ratio of height to diameter was approximately 0.2 in any cirrhosis.
社団法人日本肝臓学会の論文