这类手术需要恒定的X光，并且需要耗费很长时间才能完成。 手术过程中放射出的X光会对医生造成有害辐射，在手术过程中必须要求医生穿上防护性背心。

This type of surgery involves constantx-rays and can take a long time to complete, exposing the physician toharmful radiation and mandating that they wear a heavy protective vestwhile operating.

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