摘要:
Network virtual link mapping methods and systems are disclosed. In some method embodiments, router configurations are parsed to determine virtual link information for a network. A map is derived for virtual link information associated with a customer. The map is displayed, and may be used for highlighting problem areas for a customer, recommending solutions, and reconfiguring the virtual links to address specific customer needs.
摘要:
A system having an integrated network and customer database is provided. The system retrieves router configurations to create the integrated database, which includes port data for each port on each router in each network. The system may determine the impact of proposed actions on routers. The system may process network events to display the status, port data, and customer data for each port. The system may respond to user input by polling a router and displaying the real time status, port data, and customer data for each port on the router.
摘要:
An optimized elastic modulus reconstruction procedure can estimate the nonlinear elastic properties of vascular wall from intramural strain and pulse wave velocity (PWV) measurements. A noninvasive free-hand ultrasound scanning procedure is used to apply external force, comparable to the force in measuring a subject's blood pressure, to achieve higher strains by equalizing the internal arterial baseline pressure. PWV is estimated at the same location where intramural strain is measured. The reconstructed elastic modulus is optimized and the arterial elastic modulus can be determined and monitored using a simple dual elastic modulus reconstruction procedure.
摘要:
Methods and systems for measuring mechanical property of a vascular wall and a method and system for determining health of a vascular structure are provided wherein local deformation of a vessel wall resulting from physiologic pressures with altered transmural forces is measured. A non-invasive free-hand ultrasound scanning-procedure was performed to apply external force, comparable to the force generated in measuring a subject's blood pressure, to achieve higher strains by equalizing the internal arterial baseline pressure. When the applied pressure matched the internal baseline diastolic pressure, strain and strain rate increased by a factor of 10 over a cardiac cycle. Radial arterial strain was assessed in the vessel wall over the entire deformation procedure using a phase-sensitive, two-dimensional speckle-tracking algorithm. An elastic modulus reconstruction procedure was developed to estimate the non-linear elastic properties of the vascular wall.
摘要:
An x-ray CT system performs a scan by acquiring projection views from which an image is reconstructed. In a prospective embodiment, the correlation of adjacent views is calculated as the scan is performed and is used to detect subject motion as the scan is being performed. In a retrospective embodiment, the correlation of adjacent views is calculated and is used to detect subject motion after the scan is completed. In the first embodiment substitute projection views are acquired by continuing the scan and in the second embodiment redundant projection views acquired during the scan are substituted until the best possible image is produced.
摘要:
An ultrasonic imaging system acquires echo signals from an object being imaged such as a moving coronary artery and the cross-correlation between echo signals is employed as an objective measure of relative object location. The method is used in a prescan procedure to determine an optimal gating window to acquire image data during a cardiac gated scan, and it is used during the scan as a real time gating signal.
摘要:
A system having a data retriever and a database manager is provided. The data retriever retrieves router configurations from data stores for routers. The database manager parses the router configurations to determine port data for each port on each router, and integrates the port data with customer data to create an integrated database. The database manager also determines a customer link diversity based on the integrated database and displays the customer link diversity. The database manager can recommend reassignment of a customer link when the customer link diversity is less than a corresponding target customer link diversity. The database manager can also determine the customer link diversity when adding a card and determine the customer link diversity when adding a customer link.