DETECTING AN ACCESS CUSTOMER EDGE DEVICE OF A PROVIDER EDGE DEVICE

According to an example, a Virtual Switch Instance (VSI) in a provider edge (PE) device is obtained and an encapsulation Virtual Local Area Network (VLAN) ID corresponding to the VSI is obtained. A service VLAN (SVLAN) ID in VLAN mapping information in a customer edge (CE) device adjacent to the PE device in the VSI is also obtained, and the CE device is determined to be an access CE device of the PE device in the VSI in response to a determination that the SVLAN ID is identical to the encapsulation VLAN ID. 1. A method to detect a customer edge (CE) device adjacent to a provider edge (PE) device in a Virtual Switch Instance (VSI) in a Multi-Protocol Label Switch (MPLS) Layer 2 Virtual Private Network (L2VPN) , the method comprising:obtaining the VSI in the PE device;obtaining an encapsulation Virtual Local Area Network (VLAN) ID corresponding to the VSI;obtaining a service VLAN (SVLAN) ID in VLAN mapping information in the CE device adjacent to the PE device in the VSI; anddetermining the adjacent CE device is an access CE device of the PE device in the VSI in response to a determination that the SVLAN ID is identical to the encapsulation VLAN ID.2. The method of claim 1 , wherein the PE device has multiple VSIs claim 1 , and obtaining the SVLAN ID in the VLAN mapping information in the CE device adjacent to the PE device in the VSI comprises:for each of the multiple VSIs, obtaining an SVLAN ID in VLAN mapping information in a CE device adjacent to the PE device.3. The method of claim 1 , wherein the PE device has multiple adjacent CE devices in the VSI claim 1 , and obtaining an SVLAN ID in VLAN mapping information in a CE device adjacent to the PE device in each VSI comprises:obtaining an SVLAN ID in VLAN mapping information in each adjacent CE device.4. The method of claims 1 , wherein obtaining the SVLAN ID in the VLAN mapping information in the CE device adjacent to the PE device in the VSI comprises:obtaining a QoS policy configured for an ingress direction ...

Composition for magnetic ultrasound contrast agent, magnetic ultrasound contrast agent, magnetic microbubble ultrasound contrast agent and preparation method thereof

Disclosed are a composition for magnetic ultrasound contrast agent, a magnetic ultrasound contrast agent, a magnetic microbubble ultrasound contrast agent, and a preparation method thereof. The composition for magnetic ultrasound contrast agent includes a lipid, a surfactant and a magnetic nanoparticle; the surfactant consists of a surfactant A and a surfactant B, the surfactant A is in a free state, and the surfactant B is in a bonding state and is modified on the surface of the magnetic nanoparticle; the HLB value of the surfactant A is greater than 8. The magnetic microbubble ultrasound contrast agent obtained from the composition for magnetic ultrasound contrast agent has higher stability and may meet requirements for in vivo cyclic targeted delivery, thereby achieving the local high-concentration targeted delivery of a medication.

Composition for ultrasound contrast agent, ultrasound contrast agent and preparation method thereof

Disclosed are a composition for ultrasound contrast agent, an ultrasound contrast agent, and a preparation method thereof. The composition for ultrasound contrast agent includes a lipid, a stabilizer and an acoustic-induced deformation material; relative to 100 parts by weight of the lipid, the content of the stabilizer is 20 to 100 parts by weight, and the content of the acoustic-induced deformation material is 1 to 15 parts by weight; and the acoustic-induced deformation material is deformed under a specific acoustic wave, and the characteristic response frequency of the acoustic-induced deformation material is 0.01 MHz to 50 MHz. The microbubble ultrasound contrast agent has better stability, thereby it circulates in vivo for a longer time, and has lower mechanical index, so that the inertial cavitation occurs under a low-energy ultrasonic wave.

Ultrasound-guided drug-loaded microbubble delivery method and electronic device

A method of delivery of an ultrasound-guided drug-loaded microbubble, an electronic device, and a computer-readable storage medium are provided. The method includes: emitting a first ultrasonic signal by utilizing an array transducer, to break a drug-loaded microbubble in a current breaking region; emitting a second ultrasonic signal by utilizing the array transducer, to obtain an ultrasound image; identifying a contour of a blood vessel of the breaking region based on the ultrasound image; and updating a characteristic parameter of the breaking region based on the contour of the blood vessel. According to the method, the breaking region is updated in real time based on the contour of the blood vessel, so that delivery accuracy of a drug-loaded microbubble is improved, and avoiding unnecessary tissue damage.

Detecting an access customer edge device of a provider edge device

According to an example, a Virtual Switch Instance (VSI) in a provider edge (PE) device is obtained and an encapsulation Virtual Local Area Network (VLAN) ID corresponding to the VSI is obtained. A service VLAN (SVLAN) ID in VLAN mapping information in a customer edge (CE) device adjacent to the PE device in the VSI is also obtained, and the CE device is determined to be an access CE device of the PE device in the VSI in response to a determination that the SVLAN ID is identical to the encapsulation VLAN ID.

Contrast agent film-forming agent composition, contrast agent film-forming lipid solution, and contrast agent and preparation method therefor

Ultrasound-guided drug-loaded microbubble delivery method and apparatus

Magnetic ultrasound contrast agent composition, magnetic ultrasound contrast agent, and magnetic microbubble ultrasound contrast agent and preparation method therefor

Detecting an access customer edge device of a provider edge device

According to an example, a Virtual Switch Instance (VSI) in a provider edge (PE) device is obtained and an encapsulation Virtual Local Area Network (VLAN) ID corresponding to the VSI is obtained. A service VLAN (SVLAN) ID in VLAN mapping information in a customer edge (CE) device adjacent to the PE device in the VSI is also obtained, and the CE device is determined to be an access CE device of the PE device in the VSI in response to a determination that the SVLAN ID is identical to the encapsulation VLAN ID.

Detecting an access customer edge device of a provider edge device

Ultrasonic blood perfusion imaging method and apparatus for single vessel

Disclosed is an ultrasonic blood perfusion imaging method for a single blood vessel, comprising: setting an ultrasound focusing label point in a blood vessel contour of a blood vessel to be measured in a region to be measured; obtaining a preactivated ultrasound image of the region to be measured when an ultrasound contrast agent is in an inactive state; activating the ultrasound contrast agent; obtaining an activated ultrasound image of the region to be measured when the ultrasound contrast agent is in an activated state; obtaining an activation map of the ultrasound contrast agent in the blood vessel to be measured; and obtaining a blood flow perfusion distribution map of the blood vessel to be measured. The ultrasound contrast agent is activated at the ultrasound focusing label point causing liquid-to-gas conversion, and the ultrasound signal changes from dark to bright.