| 摘要 |
The invention concerns an apparatus for fusion and navigation of ecographic and volumetric images of a patient ( 1 ) and for localization of an ecographic probe ( 2 ) connected with an ecographer ( 7 ) and/or of a surgical instrument ( 3 ) operating on the same patient. The unit comprises a plurality of passive ( 3 ) active optical markers ( 4 ) positionable on the body of the patient and a plurality of active optical markers ( 5, 6 ) located on the ecographic probe and/or on the surgical instrument, sensors of optical signal ( 8 ) provided with devices ( 9 ) for activation of said passive markers, which sensors ( 8 ) are suitable for reception of optical signals produced by reflection of said passive markers and/or coming from said active markers, a turning on device ( 11 ) for said active markers and said devices for the activation of the passive markers, a movement analysis device ( 10 ) suitable to process the signals emitted by said sensors ( 8 ) as a function of the optical signals received in order to obtain from them the coordinates of said markers, a decoding device ( 12 ) suitable to distinguish the coordinates of the active markers from the ones of the passive markers, a data processing device ( 13 ) for localization of the ecographic probe ( 2 ) and/or the surgical instrument ( 3 ) and for definition of the movement of the patient, a device ( 14 ) for acquisition of the ecographic images in synchronism with the position of the ecographic probe ( 2 ) and/or the surgical instrument ( 3 ) and a device ( 15 ) for fusion and the navigation of the ecographic images with volumetric images coming from other systems ( 16 ) for acquisition of images. |
