Computed tomography and positioning of the anatomy desired to be imaged
AssigneePlanmeca Oy
InventorsMikko JARVA, Kustaa NYHOLM
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Abstract
The invention relates to a problem of setting mutual position of an anatomy being imaged and imaging means of a computed tomography imaging apparatus so that specifically the very volume of the anatomy desired to be imaged actually is imaged. To further the positioning, a positioning tool in a form of a three-dimensional virtual positioning model (40), generated from the anatomy to be imaged, is shown on a display from which the volume (41) of the anatomy desired to be imaged can be pointed, selected or defined.
Claims20
A method for positioning an anatomy for computed tomography imaging, in which method, an arrangement is used which comprises a computed tomography imaging apparatus including X-ray imaging means, a control system of the computed tomography imaging apparatus and a means for showing image information arranged in a functional connection with the computed tomography imaging apparatus, in which method an anatomy including a volume desired to get imaged is positioned in the imaging area of the computed tomography imaging apparatus, a virtual positioning model is shown by said means for showing image information, the positioning model showing at least a portion of a three dimensional surface of said anatomy and comprising the volume desired to get imaged, a location of the volume in said virtual positioning model desired to get imaged is pointed, selected or determined, a relation of a position of a set of coordinates of said virtual positioning model to a position of a set of coordinates of the X-ray imaging means of the computed tomography imaging apparatus is resolved, control information is transmitted to the control system of the
- computed tomography imaging apparatus for imaging said volume of the anatomy desired to get imaged, which control information is based on knowledge of the relation of the position of the set of coordinates of said virtual positioning model to the position of the set of coordinates of the X-ray imaging means of the computed tomography imaging apparatus and knowledge of the location in said virtual positioning model of said volume desired to get imaged.
A computed tomography imaging apparatus which comprises an X-ray imaging means which includes an X-ray source and a receiver means of image information, an imaging station, a control system, a means arranged in a functional connection with the computed tomography imaging apparatus for processing image information as well as a means for showing image information, in which apparatus, the control system comprises:
- a means for showing on said means for showing image information a virtual positioning model, the positioning model showing at least a portion of a three-dimensional surface of an anatomy being imaged and comprising a volume desired to get imaged from said anatomy, a means for pointing, selecting or determining a location of the volume in said virtual positioning model desired to get imaged, a means for determining a relation of a position of a set of coordinates of said virtual positioning model to a position of a set of coordinates of the imaging means of the computed tomography imaging apparatus, and a means for transmitting control information to the control system of the computed tomography imaging apparatus for imaging said volume of the anatomy desired to get imaged, which control information is based on knowledge of the relation of the position of the set of coordinates of said, virtual positioning model to the position of the set of coordinates of the X-ray imaging means of the computed tomography imaging apparatus and knowledge of the location of said volume in said virtual positioning model desired to get imaged.
Dependencies are inferred from the claim text.