초록 ▼

A stereotactic method and apparatus for treating a region of a patient\s body defines points in the region using a three-dimensional coordinate system with reference to a ring attached to the patient for establishing a reference point for the three-dimensional coordinate system at the center of the

A stereotactic method and apparatus for treating a region of a patient\s body defines points in the region using a three-dimensional coordinate system with reference to a ring attached to the patient for establishing a reference point for the three-dimensional coordinate system at the center of the ring. The same ring and reference point is then used for stereotactically controlling instruments used to treat the region. The ring is preferably provided with pins extending parallel to the axis of the ring, and equidistant from the center, for precise location of the center and of a base-line scan for correlation between the location of the region to be treated and the control system for treatment of the region. Prior to treatment, a series of noninvasive tomography scans are made through the region and at least part of the pins for determining the coordinates of at least one point of the region selected for the treatment with respect to the center of the ring. All parameters of the system for stereotactic control of instruments used for treatment are then determined with respect to the ring center as a reference point.

대표청구항 ▼

In a stereotactic system for treating a region of a patient\s body, a method for using a tomography scanner for defining a selected point of the region in a three-dimensional coordinate system with reference to a predetermined point of means attached to the patient for establishing a reference point

In a stereotactic system for treating a region of a patient\s body, a method for using a tomography scanner for defining a selected point of the region in a three-dimensional coordinate system with reference to a predetermined point of means attached to the patient for establishing a reference point of said coordinate system for accurate control of instruments used to treat said region, comprising the steps of placing said means on the patient for precise correlation between the location of the region to be treated and the control system for treatment of the region in said three-dimensional coordinate system, conducting a series of parallel tomography scans through said region to be treated and at least part of said means for determination of three-dimensional coordinates of points in said region of the body of said patient to be treated relative to said reference point of said means, determining from data of said scan series three-dimensional coordinates with respect to said reference point of said means of at least one point of said region, determining all parameters of the system for control of instruments used for treatment with respect to said reference means, and completing the treatment with instruments guided by said control system with reference to said means still attached to said patient, wherein said reference means is a ring attached to the patient, and said reference point is the center thereof.