Department of RadiotherapyOur Techniques ❯ MR guided radiation therapy (MRgRT)


With the rapid development of radiological imaging and computer technology in 1990s, radiological imaging has been widely used as primary image for radiation therapy 3D dosimetry and treatment verification. Radiological imaging like CT scan is good in spatial resolution and accurate in geometry, but it is fair in soft tissue details. In radiation therapy, precise delineation of tumour is critical for both tumour control and healthy tissues sparing. MRI scan gives remarkable image details in tumour and soft tissue definition, which is superior to radiological imaging. Also in contrast to radiological imaging, MRI scan does not involve radiation in image acquisition which can be used repeatedly for tumour localization and treatment verification without causing radiation hazard to patients.

MR guided radiation therapy (MRgRT) is a new advanced technique which integrating MRI into routine radiation therapy workflow. So that tumour geometrical changes in daily treatments can be readily spotted out by MRI and corresponding radiation dosimetry can be adapted according to the changes if needed. This can minimize the risks in tumour miss and maximize the benefits in healthy tissue sparing in radiation therapy.

This Technique provided by Unity MR Linac.