After enhancement, mesenteric venous wall was enhanced as circular, the bowed wall was enhanced presenting the "target" sign, the bowed wall was not enhanced in 1 case.

增强后，肠系膜静脉管壁环形强化，肠管管壁强化呈“靶征”，1例肠管未见强化。

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The Circular sets out the role of regional and local authorities in ensuring the protection, promotion and enhancement of World Heritage Sites.

UNESCO: UK National Commission for UNESCO :: New Circular on the Protection of World Heritage Sites published