IGRT (Image Guided Radiotherapy)
IGRT (Image Guided Radiotherapy) ensures that IMRT and other radiotherapy treatment techniques are delivered with optimal accuracy.
IGRT utilises advanced imaging technology that can verify patient position before and during radiotherapy. This ensures that treatment is delivered with pinpoint accuracy by matching a patient’s daily treatment position to their position at treatment planning.
Here at CCL we use various state of the art IGRT technologies. These include Cone Beam CT, where the treatment machine acquires a three dimensional (3D) scan of the patient’s position; its’ consistency with position at planning is verified by our highly trained radiographers using advance software technology. After verification radiotherapy treatment is only delivered if the patient’s position is within a defined tolerance.
We also use CT-ON-RAILS which allows the radiographers to match the patient’s 3D soft-tissue anatomy with their anatomical position at planning before treatment delivery. CT-ON-RAILS permits a systematic visualisation of changes in the shape and size of the tumour volume or region being treated. This information can be used to re-optimise the the radiotherapy treatment, thus facilitating Adaptive Radiotherapy (ART). Adaptive Radiotherapy incorporates the gradual variations that may occur during radiotherapy and the treatment is modified to track these changes.
Our AlignRT system is a video- based 3D surface IGRT system that is used to image the skin surface of a patient before and during radiotherapy. This IGRT method is non-invasive and produces no irradiation during the imaging process. At CCL we use this technique daily as one of our means to guarantee optimum treatment position.