1980年我院利用一般200mA中型x线机,自行设计改装成双台双向脑血管造影同步摄影x线机及防护装置,并仍保持了一机多用的功能。双向摄影只需注射一次造影剂,同时拍摄正、侧位两个不同方向的同期的脑血管充盈情况的照片,减少了注药次数及病人痛苦。 In 1980, our hospital used a general 200mA medium-sized x-ray machine to design and convert it into a dual-stage bi-directional cerebral angiography simultaneous photography x-ray machine and a protective device, and still maintained the function of a multi-purpose machine. Two-way photography only injection of contrast agent, while shooting positive and lateral two different directions of the same period of cerebral vascular filling photos, reducing the frequency of injection and patient pain.