134 results about "Computed tomography scanner" patented technology

A system and method is provided directed to improved real-time image guidance by uniquely combining the capabilities of two well-known imaging modalities, anatomical 3D data from computer tomography (CT) and real time data from live fluoroscopy images provided by an angiography / fluoroscopy system to ensure a more efficient and safer intervention in treating punctures, drainages and biopsies in the abdominal and thoracic areas of the human body.

The invention relates to a computer tomograph comprising a detector unit (2) consisting of a plurality of detectors (1) for identifying X-ray radiation (40). According to the invention, the individual detectors (1) of the detector unit (2) are configured to receive incident quanta of the X-ray radiation (40) and to record the received X-ray radiation (40), both in terms of its intensity and in terms of the quantum energy of the individual X-ray quanta of the received X-ray radiation (40). The invention also relates to a corresponding method for identifying X-ray radiation by means of a computer tomograph that comprises a detector unit (2) consisting of a plurality of detectors (1).

A CT imaging method and a CT system based on a multi-mode scout scan. The CT imaging method based on a multi-mode scout scan comprises: performing an instant switching dual energy scout radiation scan on a region of interest of a subject by way of instant switching between high voltage and low voltage to collect dual energy protection data of the region of interest; and reconstructing a material decomposition image and a mono-energetic image based on the collected dual energy projection data.

A method and apparatus of aligning calibration projection data with object projection data to improve calibration corrections of the object projection data. In a first implementation, the method interpolates and upsamples both the calibration and object data, then shifts the upsampled calibration data to match a sub-view angular offset of the object data, and then performs calibration corrections before down-sampling the corrected object data. In a second implementation, the method continuously scans an object space—with the object absent (present) in the object space—to obtain calibration data (object absent) and object data (object present) both having the same sub-view angular offset. In a third implementation, the method obtains multiple scans having different sub-view angular offsets, organizes the scans into bins according to their respective sub-view angular offsets, and chooses the appropriate sub-view angular offsets bin for calibration corrections of the object data.

An optical CT scanner for small laboratory animals comprises a housing having a vertical through opening through which a test subject is passed through during a scanning session, the housing including a peripheral slot disposed around the perimeter of the opening; a movable horizontal table disposed through the opening, the table being split with a horizontal slot aligned with the peripheral slot; a light beam directed toward the peripheral slot and orbitable around the opening; a plurality of collimators directed toward the peripheral slot and orbitable around the opening together with the light beam; a plurality of main photodetectors to detect the light beam after passing through the test subject and the collimators; a perimeter photodetector adapted to provide perimeter data of the test subject during a scanning session; and a first computer programmed to reconstruct an image of the test subject from the output of the perimeter and main photodetectors.

An apparatus and method for providing an x-ray shield means in an x-ray detection system. An x-ray inhibiting container for use in a computed tomography system is provided, the container comprising: a peripheral wall; and a bottom, wherein the peripheral wall and bottom define a receiving area, and a forward portion and a rearward portion of the peripheral wall comprise an x-ray inhibiting material. The system comprising: a computed tomography scanner, configured to produce x-ray projection data as an object is passed through the computed tomography scanner, the computed tomography scanner comprising: a gantry having an opening; and an x-ray source configured to project a fan beam of x-rays towards a detector array disposed on an opposite side of the gantry opening, the x-ray source and detector array being mounted to the gantry about the opening; a structure defining an internal volume being configured to receive at least the gantry of the computed tomography scanner therein, the structure having an input opening and an outlet opening, the structure comprising an x-ray shielding material; and a motorized conveyor for passing a plurality of tubs through the input opening to the outlet opening, wherein each of the tubs comprises a peripheral wall and a bottom to define a tub volume and a forward portion and a rearward portion of the peripheral wall is configured to substantially cover the input opening or the outlet opening as the plurality of tubs are passed through the structure, wherein the forward portion and the rearward portion each comprise an x-ray shielding material.