France-based University Hospital La Timone has installed Elekta’s new Leksell Gamma Knife Icon system, which is used to treat metastasis in the brain.
Gamma Knife Icon offers an integrated cone-beam CT (CBCT) workflow, which allows doctors to check the patient’s position against planning images.
An initial CBCT will be carried out to obtain a reference image, after a thermoplastic mask is custom-fitted to the patient’s head. It is then combined with an MRI image to enable the clinician to develop the plan.
During treatment, patient motion will be seen through a high-definition motion management system, which monitors the patient’s head position through infrared tracking of markers.
University Hospital La Timone Gamma Knife programme director Dr Jean Régis said: "In a few seconds, the GammaPlan software automatically adapts the plan to the new position of the patient’s head and displays the dose distribution before and after this automated recalculation.
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"This allows the physician to identify any discrepancies between the initial plan and the recalculated plan according to the new patient position. It’s important to reiterate that this is a plan correction, not physically correcting the patient’s position.
"The on-the-fly intrafraction, automated adaptation of the planning to patient position is a new and interesting capability of Icon."
Elekta is involved in developing modern tools and treatment planning systems for radiation therapy, radiosurgery and brachytherapy, as well as workflow enhancing software systems across the spectrum of cancer care.