摘要:
An aerodynamically and structurally superior, fixed-blade hunting arrowhead providing higher penetration coupled with a structurally sound, non-deflecting, blade-cutting area to take down wild game quickly and humanely. The assembly comprises the ferrule, main blade, and sub-blade, wherein the unitary ferrule has a machined structure that holds and reinforces the blade units as well as incorporates a concave-faceted cutting tip, blade-location channels, cavities for blade snap retention, and rearmost threaded portion for attachment to a standard arrow insert. The main blade is a one-piece element which incorporates two forward-cutting blades and two rear blades, as well as a rearmost anchoring means of attaching the blade to the ferrule. The sub-blade is a one-piece element positioned perpendicular to the main blade and is retained in the same manner as the main blade by means of integrated projections snapping into cavities within the ferrule.
摘要:
An ultrasound image display method and System for a two-dimensional monitor (40) that synchronizes a swiveling or rotating volumetrically rendered three-dimensional ultrasound image (76) with the oscillation of an oscillating ultrasound object (72), such as a beating heart or breathing lung. The invention includes swiveling instructions for repetitively swiveling the volumetric ultrasound image (76) in three-dimensional space. Oscillation frequency measuring instructions (108) measure the oscillating ultrasound object's oscillation frequency. Synchronization instructions (118) synchronize a repetitive rotation of the object with the oscillation frequency such that at a predetermined point the beginning of a rotation repetition (110) coincides with the beginning of an oscillation. The volumetric ultrasound image display (76) provides the options of a live display, a variably static display, and pre-recorded display capable of continuous replay.
摘要:
A three dimensional ultrasound imaging device, having an interpolator that creates up sampled ultrasound image information from a three dimensional ultrasound image information using interpolation; and a memory that stores at least one of the three dimensional ultrasound image information and the up sampled ultrasound image information. The three dimensional ultrasound imaging device can have a probe that sends ultrasound waves, gathers reflected ultrasound waves and creates ultrasound information and a processor that converts the ultrasound information to three dimensional ultrasound image information. The ultrasound imaging device may also have a display that displays the up sampled image information. The three dimensional ultrasound imaging device may use at least one of 2 image to 3 image interpolation, 2 image to 4 image interpolation, 3 image to 4 image interpolation and 3 image to 5 image interpolation. The three dimensional ultrasound imaging device may use two dimensional solids and three dimensional volumes. The three dimensional ultrasound imaging device may also create up sampled ultrasound image information that has a greater number of frames, a greater number of three-dimensional frames, a greater number of two-dimensional volumes, a greater number of three dimensional volumes and a larger amount of ultrasound information.
摘要:
An ultrasonic diagnostic imaging system is described which quantifies regurgitant flow through a mitral valve. A flow quantification processor (34) in the ultrasound system produces a mathematical model of a flow velocity field proximal to a regurgitant orifice. The velocity field model produces values of velocity vectors directed toward the regurgitant orifice. These modeled values are modified for the effects of ultrasound physics and ultrasound system operation to produce expected velocity values. The expected velocity values are compared with actual Doppler velocities measured by the ultrasound system, and the differences accumulated to a mean square error which is used to adjust parameters of the model such as the orifice location and flow velocities. When this iterative processing converges with a desired comparison, parameters derived from the finally adjusted model are used to calculate the true orifice location, flow rate, and volume flow.
摘要:
An ultrasonic diagnostic imaging system scans a plurality of planar slices in a volumetric region containing tissue which has been perfused by a contrast agent. The plurality of slices scanned are parallel to each other. Following detection of the image data of the slices the slice data is combined by projecting the data in the elevation dimension to produce an elevationally combined slice image. Combining may be by means of an averaging or maximum intensity detection or weighting process or by raycasting in the elevation dimension in a volumetric rendering process. The elevationally combined slice image is processed to produce a qualitative or quantitative measure of perfusion, such as an image with degrees of perfusion indicated by a range of brightness levels, an image of color perfusion parameters, or a perfusion curve or curve parameter indicating rate of perfusion.
摘要:
A three dimensional ultrasonic imaging system acquires 3D image data from a volumetric region and processes the image data to produce a live 3D image of the volumetric region in a given orientation. A user control can be switched by a user to present the image in a different orientation if desired. Both the anatomy in the 3D image and the image format can be inverted, and the left-right appearance of the 3D image can be reversed with a corresponding front-back reversal of the anatomy.
摘要:
The present invention relates to a stereoscopic imaging apparatus (2). The apparatus (2) comprises a real time ultrasound imaging device (14, 20, 22) for generating a real time 3D model of a patient's heart (4), combining the real time 3D model with a static 3D model of the region surrounding the heart (4) previously stored in memory (24), and generating stereoscopic image data of the combined real time and static 3D model. The apparatus also comprises a display (30) for simultaneously displaying the real time stereoscopic image of the heart (4) and a static stereoscopic image of the region surrounding the heart (4). By enabling a real time stereoscopic image of the heart (4) and a static stereoscopic image of the region surrounding the heart to be simultaneously displayed on the display (30), this improves the user's depth perception in viewing the real time image.