An image guided catheter navigation system for navigating a region of a patient includes an imaging device, a tracking device, a controller, and a display. The imaging device generates images of the region of the patient. The tracking device tracks the location of the catheter in the region of the patient. The controller superimposes an icon representing the catheter onto the images generated from the imaging device based upon the location of the catheter. The display displays the image of the region with the catheter superimposed onto the image at the current location of the catheter.

Navigation system for cardiac therapies

A surgical navigation system for navigating a region of a patient includes a non-invasive dynamic reference frame and/or fiducial marker, sensor tipped instruments, and isolator circuits. The dynamic reference frame may be repeatably placed on the patient in a precise location for guiding the instruments. The instruments may be precisely guided by positioning sensors near moveable portions of the instruments. Electrical sources may be electrically isolated from the patient.

Method and apparatus for surgical navigation

A computer-aided surgical device for aiding a surgeon in positioning a surgical instrument (power or manual) when performing surgery on unexposed and exposed portions of a patient.

Computer-aided surgery apparatus

A system for determining a position of a probe relative to an object such as a head of a body of a patient. The head includes a surface such as a forehead having a contour. Cross sectional images of the head are scanned and stored as a function of the forehead contour. If the forehead contour does not appear in the scan images, then the position of the forehead contour relative to the scan images is determined with an optical scanner and a ring. During surgery, the optical scanner also determines the position of the forehead relative to the ring. An array for receiving radiation emitted from the probe and from the ring generates signals indicating the position of the tip of the probe relative to the ring. A stereotactic imaging system generates and displays an image of the head corresponding to the measured position of the tip of the probe. The system may also display scan images from different scanning technologies which scan images correspond to the same position in the head.

System for indicating the position of a surgical probe within a head on an image of the head

A stereotactic navigation system for navigating an instrument to a target within a patient may include a stereotactic head frame, an imaging device, a tracking device, a controller and a display. The stereotactic head frame is coupled to the patient and is used to assist in guiding the instrument to the target. The imaging device captures image data of the patient and of the stereotactic head frame. The tracking device is used to track the position of the instrument relative to the stereotactic head frame. The controller receives the image data from the imaging device and identifies the stereotactic head frame in the image data and automatically registers the image data with navigable patient space upon identifying the stereotactic head frame, while the display displays the image data.

Method and apparatus for performing stereotactic surgery

A method of measuring the profile of a three-dimensional object including the steps of scanning the surface of the object to be measured with a slit-ray, forming an optical image of the surface of the object on an imaging plane of a nonscanning type two-dimensional image sensor which is composed of a plurality of mutually independent photosensors, measuring each time interval between a time when the slit-ray passes a predetermined point and a time when reflected rays are received by any of each of the plurality of mutually independent photosensors, storing each of the time intervals measured in separate memory means with a one to one correspondence between the position of each of the plurality of photosensors and each of the plurality of separate memory means and determining the profile from the time interval stored.

Method and apparatus for measuring profile of three-dimensional object

Piecewise linear approximation of plane curves by perimeter optimization

In this paper the authors propose a method to use interpolation to eliminate characters in only one image with telops or other text through an image interpolation method that uses the eigenspace method. Background scenes and other images have a fractal character, and often the self-correlation in the image can be assumed to be high. The authors focus on this point and represent rules for describing the image based on an eigenspace consisting of only one image that has defects. The eigenspace generated in this manner reflects the features of the image, and by using this eigenspace, image interpolation can be achieved. Although this interpolation method does not restore the original image, the authors confirmed through experimental results that it can provide interpolation without a feeling of oddness for images which have a high level of self-correlation. © 2006 Wiley Periodicals, Inc. Syst Comp Jpn, 38(1): 87– 96, 2007; Published online in Wiley InterScience (). DOI 10.1002sscj.10319.

https://onlinelibrary.wiley.com/doi/pdf/10.1002/scj.10319

Image interpolation using BPLP method on the eigenspace

On-line Signature Verification by Adaptively Weighted DP Matching

PURPOSE: To measure a shape at a high speed, by successively reading the surface shape of an object to be measured while the surface of said matter is stocked by slit like laser beam. CONSTITUTION: The beam from a laser beam source 1 is vertically expanded by a cylindrical lens system 2 to be converted to slit beam and the surface of an object 4 to be measured is irradiated with said slit beam through a plygon mirror 3. The slit beam n(t) is deflected in its irradiation angle by the rotation of the mirror 3 to successively stroke the surface of the object 4. The discrimination of the beam n(t) is performed on the basis of the elapse time (t) after beam passes through a photosensor 5. The reflected beam R(t) from the object 4 is received by an image pickup apparatus 9 to be formed into an image on the image pickup surface having the photosensor arranged thereto. Subsequently, the positional information and discrimination information (t) on the surface 11 are latched by a memory holding part 12 and subsequently converted to space coordinates by a matching operational processing part 13 and the shape of the object 4 is measured at a high speed. COPYRIGHT: (C)1987,JPO&Japio

Yukio Sato

Papers

Method and apparatus for measuring profile of three-dimensional object

Piecewise linear approximation of plane curves by perimeter optimization

Image interpolation using BPLP method on the eigenspace

On-line Signature Verification by Adaptively Weighted DP Matching

Method and apparatus for measuring shape of three-dimensional object