To observe the changes in the liver tissue structures of patients with Chronic Cholestasis Hepatitis(CCH) treated with Hyperbaric Oxygenation(HBO).

观察慢性淤胆型肝炎（CCH） 高压氧（HBO） 治疗前后肝组织学结构变化。

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Perfusion computed tomography (CT) is a noninvasive method showing hemodynamic changes in living tissue and has been used in the evaluation of liver diseases.

灌注计算机断层扫描（CT）是已用于评价肝脏疾病的一种无创性的检查手段，它利用显示血流动力学的变化来反映活体组织的变化。

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Aim To observe the ultrastructure changes of liver tissue in CCH (Chronic cholestasis hepatitis) patients treated with HBO (Hyperdric oxygenation).

目的观察慢性淤胆型肝炎(CCH)高压氧(HBO)治疗前后肝组织超微结构的变化。

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