摘要:
An ultrasound imaging system provides for defining a VOI in an ultrasound imaging space. The system defines an initial frame of the VOI in the ultrasound imaging space, receives a selection of at least one reference point at an arbitrary location in the ultrasound imaging space, creates at least one curved surface using at least one element of the initial frame and the at least one reference point, and then creates VOI based on the curved surface in the ultrasound imaging space.
摘要:
A three-dimensional/four-dimensional (3D/4D) imaging apparatus and a region of interest (ROI) adjustment method and device are provided. An ROI is adjusted through an E image in a 3D/4D imaging mode, in which the E image is refreshed in real time when the ROI is adjusted and has a scan line range larger than that of the ROI.
摘要:
The present invention relates to a novel phytase enzyme, a novel isolated nucleic acid molecule coding the enzyme, and a novel Yersinia intermedia having phytase activity. Particularly, the present invention relates to the phytase having (a) Theoretical molecular weight 45.5 kDa, (b) high specific activity 3960±248 U/mg, (c) high stability at high temperature and wide pH, (d) optimal pH of 4.0-5.0, (e) optimal temperature of 50-60° C., (f) high resistance to pepsin and trypsin. The phytase is very suitable to be used in feed of monogastrics as feed additive. The present invention also relates to a recombinant vector comprising said nucleic acid molecule, a recombinant host cell (e.g., Pichia pastoris) harboring said recombinant vector, and a method for producing phytase using the recombinant host cell. The present invention further provides a feed additive comprising said phytase and/or host cells expressing a phytase as effective ingredient. In addition, the present invention provides a novel method for isolating phytase from a target organism.
摘要:
A three-dimensional/four-dimensional (3D/4D) imaging apparatus and a region of interest (ROI) adjustment method and device are provided. An ROI is adjusted through an E image in a 3D/4D imaging mode, in which the E image is refreshed in real time when the ROI is adjusted and has a scan line range larger than that of the ROI.
摘要:
A method and device for transmission of wide beam in ultrasonic diagnostic systems is disclosed. The method comprises: dividing an aperture of an ultrasonic probe into N sub-apertures; laterally dividing a focus into N sub-focuses, wherein the N sub-apertures correspond to the N sub-focuses respectively, each sub-aperture has M array elements which all focus on a sub-focus corresponding to said sub-aperture; and N and M are integers larger than 2; exciting the N sub-apertures by a pulse generator, so as to obtain a laterally stretched transmit acoustic filed, wherein the transmit acoustic fields of the N sub-apertures focus on the corresponding sub-focuses respectively; and accumulating the acoustic fields of the sub-apertures to form an acoustic field of a wide beam covering acoustic fields of all receive lines. The present invention makes it possible for the system to transmit wide beams covering all receive lines, by dividing the aperture of the probe into a plurality of sub-apertures and accumulating the acoustic fields of the sub-apertures.
摘要:
A circular arc wide beam transmission method includes setting parameters for a focusing circular arc and calculating a transmission delay for each of the array elements in a transmission aperture of a probe based on the parameters for the focusing circular arc. An ultrasonic imaging system controls each array element to transmit ultrasonic waves according to the transmission delay for that array element.
摘要:
An ultrasound imaging system provides for defining a VOI in an ultrasound imaging space. The system defines an initial frame of the VOI in the ultrasound imaging space, receives a selection of at least one reference point at an arbitrary location in the ultrasound imaging space, creates at least one curved surface using at least one element of the initial frame and the at least one reference point, and then creates VOI based on the curved surface in the ultrasound imaging space.
摘要:
The invention includes a system, apparatus, and method for storing media content within a service provider network. The system includes multi-service servers associated with access points adapted to allow end-user devices to access the service provider network. Each multi-service server includes a common storage partition adapted for storing media content and a plurality of end-user storage partitions adapted for maintaining associations to media content. The system includes media servers that communicate with the multi-service servers for providing media content to the multi-service servers. In response to a request for media content received from one of a plurality of end-user devices, the requested media content stored in the common storage partition is associated with a selected one of the end-user storage partitions associated with the end-user. The request for media content is received in response to end-user directed advertisements received at any of the plurality of end-user devices.
摘要:
The present invention discloses a method of volume-panorama imaging processing, which generates a volume-panorama image by subsequently splicing respective image frames from an image sequence obtained in a real-time way or stored in a medium based upon the fact that the immediately adjacent image frames have the largest correlation. The method comprises the steps of: reading the image sequence, and firstly initializing an aligned image and a spliced image; dividing the i-th image frame Fi into a plurality of sub-regions; calculating a motion vector of the i-t image frame with respect to the aligned image; fitting the motion vector to calculate a transform coefficient; splicing the Fi to the current spliced image based upon the transform coefficient, and updating the aligned image; entering into a self-adaptive selection of a next image frame until the end of the splicing; and outputting the current spliced image as a resultant image. Additionally, when the image Fi is spliced, double-filtering architecture of selecting characteristic points through a filtering and selecting the valid motion vector of the selected characteristic points through the other filtering to reduce an alignment error may be adopted. According to the present invention, the volume-panorama imaging can be done quickly and accurately so that the reliability of images particularly meets a very high requirement of the ultrasonic iatric diagnose.