Intraoperative radiotherapy (IORT) is a method that combines radiation therapy with surgery to irradiate tumours in situ, without delivering a significant dose to surrounding normal, critical structures and is typically performed using electron beams from linear accelerators. This contrasts with external beam therapy using X-ray beams where the dose that can safely be delivered to most tumours is limited by the dose that is given consequentially to normal, critical structures.
Also Read: Ultrasound vs. X-rays
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