Inverse treatment planning method and apparatus for stereotactic

Details Inverse treatment planning method and apparatus for stereotactic Inverse treatment planning method and apparatus for stereotactic

1993-06-14

1994-12-20

Smith, Ruth S.

Surgery

Truss

Pad

36441326, 606130, 378 65, A61B 600

Patent

active

053738446

ABSTRACT:
An apparatus and method for inverse treatment planning for stereotactic radiosurgery is disclosed. Target position and volume are initially determined by establishing a reliable x,y,z coordinate system using a stereotactic frame and imaging the regions of interest in the patient. The target volume is geometrically packed with "shot volumes" determined by isodose curves of single Leksell "gamma knife" shots on a series of two-dimensional slices to generate a net treatment volume. A final treatment plan is generated by further packing the target volume with the treatment volume determined by the isodose surface of all of the gamma knife shots. Once the final treatment plan is developed, the patient is treated with the "gamma knife." The result is that the target volume is sufficiently irradiated while the amount of radiation to surrounding tissue or critical structures in the patient is minimized.

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