548 results about "Multiple markers" patented technology

A method is provided for automatically classifying text into categories. In operation, a plurality of tokens or features are manually or automatically associated with each category. A weight is then coupled to each feature, wherein the weight indicates a degree of association between the feature and the category. Next, a document is parsed into a plurality of unique tokens with associated counts, wherein the counts are indicative of the number of times the feature appears in the document. A category score representative of a sum of products of each feature count in the document times the corresponding feature weight in the category for each document is then computed. Next, the category scores are sorted by perspective, and a document is classified into a particular category, provided the category score exceeds a predetermined threshold.

A system and method for bracketing a tissue volume (22) and later locating the bracketed tissue volume. The system includes a plurality of markers (30) and a probe (32) and detector (34) for use in locating the markers by providing information usable by a surgeon that is representative of changes in proximity between the probe and the plurality of markers. The markers have various detection characteristics, e.g., they transmit gamma rays, that are detectable by an associated probe and detector. The tissue volume is removed by manipulating a cutting tool based on the proximity information provided by the detector which can be used by the surgeon to define the boundary of the tissue volume. A two-part cutting tool (200) is provided for removing the tissue volume, and a tissue anchor (300) is provided for stabilizing the tissue during removal. The system and method of the invention are particularly useful in bracketing and then removing a tissue volume from amorphous, pliable tissue such as breast tissue.

A marking device for defining the margins and orientation of radiography specimens includes a plurality of visually distinctive markers joined by a base that holds the markers until the markers are secured to a specimen. The base serves as a holder for the individual markers as the markers are secured to a specimen with sutures or staples, at which time the markers are disconnected from the base. One or more markers may be secured to a specimen as needed to define the orientation of the specimen. By securing markers to specific locations on a specimen, a surgeon can indicate to radiologists and pathologists the specimen's orientation in the body before removal, thus aiding in future study of the specimen. Since the markers are made either wholly or partially from radiopaque material, the markers are visible when radiographed.

A marker navigation device for determining and / or tracking a location of a marker device is provided. The marker device is attachable to an object, said marker device including a plurality of markers having known dimensions and being in a known positional relationship relative to each other. The marker navigation device includes: a detection device operative to detect signals emitted by or reflected from the plurality of markers, wherein the detection device is formed such that in first locations of the detection device relative to the marker device, detection of signals from one marker of the plurality of markers is restricted or impossible due to a location of another marker of the plurality of markers. In second locations of the detection device relative to the marker device, the plurality of markers are detectable by the detection device. The navigation device also includes a processing device communicatively coupled to the detection device and configured to calculate the first locations based on the relative locations of individual markers of the plurality of markers and based on the known dimensions of the plurality of markers, and calculate an actual location of the marker device relative to the detection device based on detected signals from at least one marker of the plurality of markers, the known locations of the plurality of markers relative to each other, and the known dimensions of the plurality of markers. The processing device also can determines whether the actual location of the marker device is one of the first locations. A warning device is communicatively coupled to the processing device and operative to output a warning signal when the actual relative location is one of the first relative locations.

A system for obtaining coordinate data of a source and detector instrument are described. The system includes a marker assembly having a plurality of markers with a particular geometry, and an energy source for targeting the plurality of markers with energy packets. The system further includes a detector for detecting energy packets after the plurality of markers have interacted therewith, and an image device for forming image data of the plurality of markers from the energy packets detected by the detector. A calibration module for utilizes the particular geometry of the plurality of markers and the image data to non-iteratively determine coordinate data.