摘要:
An apparatus is provided for assisting breast biopsy. The apparatus includes a biopsy guide, a support system that effects three-dimensional movement of the biopsy guide and a system for registering coordinates of a remote center of motion (RCM) of the biopsy guide with a coordinate system on an image of a breast obtained from a parallel plate radiology imager. The biopsy guide has a mounting plate and a needle gun mount and ultrasound transducer mount on the mounting plate in a common plane. A biopsy needle of a needle gun mounted on the needle gun mount and an image plane of an ultrasound transducer mounted on the ultrasound transducer mount have longitudinal axes in or parallel to the common plane, which intersect at the RCM. The position of the RCM with respect to the biopsy guide is unchanged when the needle gun and/or ultrasound transducer moves on the biopsy guide.
摘要:
A device guiding apparatus comprises support framework, a counterbalance supported by the support framework at a position above a surface on which the support framework rests, and a manipulation assembly supported by the counterbalance. The manipulation assembly comprises at least one support assembly for supporting a medical device at a position intermediate the counterbalance and the surface such that a user has a direct line-of-site of the at least one support assembly.
摘要:
There is provided a mechanical arm assembly comprising: an arm rotatable about a pivot, a first force generating device for maintaining the arm at a datum, a second force generating device for compensating for the first generating device to maintain the arm in positions other than the datum.
摘要:
A system and method for performing a biopsy of a target volume and a computing device for planning the same are provided. A three-dimensional ultrasound transducer captures ultrasound volume data from the target volume. A three-dimensional registration module registers the ultrasound volume data with supplementary volume data related to the target volume. A biopsy planning module processes the ultrasound volume data and the supplementary volume data in combination in order to develop a biopsy plan for the target volume. A biopsy needle biopsies the target volume in accordance with the biopsy plan.
摘要:
A system and process are provided for performing percutaneous biopsy within a breast using three-dimension ultrasonography and including a breast positioning device, a breast immobilization device, an ultrasonic imaging device, a biopsy instrument positioning device, the breast immobilization device and the three-dimensional ultrasonographic imaging device being positioned in a known relationship to each other, the breast immobilization device being employed to immobilize the breast and a lesion contained therein for imaging by the three-dimensional ultrasonic imaging device, and the three-dimensional ultrasonic imaging device being employed to assist an operator in positioning the biopsy instrument positioning device relative to the lesion and guiding a biopsy instrument percutaneously to the lesion.
摘要:
A method and apparatus is disclosed, employed in combination with an ultrasonographic system, for assisting in guiding and placing at least one medical instrument into a target tissue during a minimally invasive medical procedure. The apparatus comprises: a reference means; a processing means in communication with the ultrasonographic system; and a mounting means for mounting the reference means in a predetermined relationship to an ultrasonographic transducer. The reference means includes a plurality of apertures arranged in an predefined manner which are sized to permit at least one medical instrument to pass therethrough. The processing means determines the spatial relationship between the target tissue and the reference means and further merges a representation of the plurality of apertures with the ultrasonographic image to form a positioning image. The positioning image assists in the guiding and placement of the at least one medical instrument into a target location by identifying a path to the target location via a selected aperture. Preferably, each aperture is provided with an internal adjustment means to permit minor adjustment to the selected path.
摘要:
A method of registering the position of an object moving in a target volume in an ultrasound imaging system includes capturing a first ultrasound image of a target volume. A second ultrasound image of the target volume is then captured after the capturing of the first ultrasound image. The position of the object in the target volume is identified using differences detected between the first and second ultrasound images. In another aspect, a region of interest in the target volume is determined. A segment of an operational scan range of a transducer of the ultrasound imaging system encompassing the region of interest is determined. The transducer is focused on the segment of the operational scan range during image capture.
摘要:
There is provided a guide apparatus for orienting a medical tool relative to and through a remote fulcrum or remote center of motion. The guide apparatus may comprise: at least one crank arm comprising at least a portion of a first hinged coupling for hinged coupling to a stabilizer; at least one link arm comprising at least a portion of a second hinged coupling for hinged coupling to the crank arm at a location spaced from the first hinged coupling; a tool holder for supporting a medical tool on the link arm at a location spaced from the first hinged coupling; wherein the rotational axes of the first and second hinged couplings intersect to define a remote fulcrum. The guide apparatus may be configured to be an open-loop spherical chain or a closed-loop spherical chain.
摘要:
A method and system for automatically processing images from a micro-array uses an image processor that is controlled by software. The software controls the microprocessor to process images to ensure that the images meet a predetermined threshold. The microprocessor automatically calculates a size of spot image, a spacing between adjacent spot images, generates a first grid and adjusts the first grid to fit the spot images being processed.
摘要:
There is described a three-dimensional imaging system for acquiring a succession of two-dimensional images of a target volume represented by an array of pixels and transforming the succession of two-dimensional images directly into a three dimensional image. Generally, the system comprises a scanner, a memory and a transformation means. The scanner scans the target volume using an angular scanning technique, and generates a succession of digitized two-dimensional images thereof representing cross-sections of the target volume on a plurality of planes spaced around an axis of rotation of the scanner. The memory stores the succession of digitized two-dimensional images and a data set. The data set comprises: (i) calibration parameters defining the geometric relationship between successive digitized two-dimensional images; and (ii) acquisition parameters defining the geometric and orientational relationship between successive digitized two-dimensional images. The transformation means receives the digitized two-dimensional images and the data set, and transforms the digitized two-dimensional images directly into a three-dimensional image of at least a portion of the target volume. The system is particularly suited to display a three-dimensional image from two-dimensional images which are acquired by a fan- or axially-acquired ultrasound image data.