Image Guided Radiation Therapy (IGRT) and NDI Technology

IGRT Challenges

Radiation therapy (also known as radiotherapy, x-ray therapy, or irradiation) is the treatment of disease (or tumours) using penetrating beams of high-energy particles called radiation. Radiation beams must be precisely located in order to radiate the tumour without harming healthy surrounding tissue. The natural movement of organs, the bladder for example, within the body between the radiation therapy planning and treatment can make it difficult to accurately target tumours for the correct placement of radiation therapy.

Product Integration

Integrating the Polaris Spectraâ„¢ with an imaging device (for example, an ultrasound) that is used prior to (or during) radiation therapy treatment would allow radiation beams to be more precisely aimed at the time of treatment. This would ensure that tumours are more accurately targeted and radiation damage to surrounding tissue is significantly minimized each time treatment is given. How would Polaris Spectra integration achieve these improvements to the procedure? Using a specially marked imaging device, for example an ultrasound probe, to locate the tumour would allow the ultrasound probe to be tracked by the Polaris Spectra Position Sensor, resulting in the ability to identify the exact location and orientation of the ultrasound probe. With the exact location of the probe being known, once the tumour is located, the radiation beam and probe location can be aligned and, as a result, the accuracy of the treatment is vastly improved.

Benefits of Integration

Key benefits of integrating Polaris Spectra technology into a specialized medical system of this nature, include:

  • Components can be permanently installed in a radiation therapy vault
  • Very large measurement volume allows for multiple locations within the vault
  • High degree of accuracy
  • Quick turn-around time for set-up and procedure make it possible to treat many patients in less time