Image-Guided Radiation Therapy (IGRT) – Viva station

Image-Guided Radiation Therapy (IGRT)

• IGRT refers to the incorporation of three-dimensional imaging prior to radiation delivery.

• Prior to each treatment, an imaging study is performed to confirm alignment of the target volume.

• This consists of either orthogonal diagnostic quality x-rays or a limited volume CT scan.

• IGR improves the likelihood that treatment is delivered accurately and thus reduces the risk of “marginal miss.”

• IGR can also reduce the margin of normal tissue used to account or potential setup error and thus can reduce the amount of normal tissue exposed to the treatment dose.