Leksell
Gamma Knife® Icon™ is a fully integrated system to meet the needs of every stage
of the workflow
The Leksell Gamma Knife®
Icon™ (LGKI) gives clinicians the option to perform single or fractionated
frame-based or frameless radiation therapy treatments, allowing for more
individualized delivery without sacrificing precision and accuracy.
High
therapeutic dose with maximum precision
Gamma Knife Radiosurgery
(GKRS) may be used in place of, or in addition to, traditional brain surgery or
whole brain radiation therapy.
During GKRS, up to 192
radiation beams from cobalt-60 sources converge with high accuracy on the
target. At the isocenter where the beams merge, the radiation dose is
concentrated powerfully at the target, sparing healthy brain tissue.
The target volume and
shape determine the number of beams used, and each beam can be individually
modulated, further enhancing accuracy.
Stereotactic
cone-beam CT
The integrated
stereotactic cone-beam CT system verifies the patient position and determines
the stereotactic coordinates in 3D, enabling each treatment to be adapted to
the patient position.
Online
Adaptive DoseControl
Online Adaptive
DoseControl confirms the accuracy of the target position and ensures precise
treatment delivery prior to every fraction of treatment. Integrated within the
LGK control system, it permits clinical decision making during the treatment
process.
The automatic dose
correction is made possible by the unique design of LGK. Since LGK uses up to
192 noncoplanar beams instead of shaped beams, it is possible to move some or
all of the shots to compensate for smaller patient movements. If the patient has
shifted, the shots will adapt to this new target position. The online dose
evaluation is the last step prior to treatment and gives the physician an
opportunity to compare the current plan to be delivered with the original
reference plan, and adapt the delivery as required.
Real-time
motion management
The High Definition Motion
Management system monitors the patient position during treatment, with a
resolution of 0.15 mm. If the patient moves outside a preset threshold, beam
delivery is automatically interrupted. The result: the highest possible
accuracy for both frameless and frame-based treatment.
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