对81例患者进行下肢动脉血管造影的翻译：On 81 cases of patients with lower extremity artery angiography 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Of 81 patients underwent lower extremity arterial angiography

On 81 cases of patients with lower extremity artery angiography

Carries on the lower limb artery angiography to 81 example patients

The 81 patients with lower limb artery imaging

On 81 cases of patients with lower extremity artery angiography