Abstract: A training method and apparatus for angiography image processing and a method and apparatus for automatically processing a vessel image. The training method includes obtaining training data that includes original angiography image data and local segmentation result data of a side branch vessel. The local segmentation result data of the side branch vessel are local segmentation image data of the side branch vessel on a main branch vessel determined from an original angiography image. A neural network is trained according to the obtained training data to make the neural network perform local segmentation on the side branch vessel on the determined main branch vessel in the original angiography image. The training method can obtain the neural network for performing local segmentation on the side branch vessel, thereby realizing improvement of segmentation accuracy while improving segmentation efficiency, and avoiding missing segmentation and wrong segmentation of the side branch vessel.

Abstract: A method and apparatus for calculating the blood flow rate in a coronary artery, an electronic device and a storage medium. The method for calculating the blood flow rate in a coronary artery comprises the following steps: S1, acquiring an angiography image of the coronary artery, segmenting the angiography image of the coronary artery by using deep learning, and obtaining segmented images of a main vessel (S1); S2, calculating the length of the main vessel in each segmented image frame on the basis of the segmented images of the main vessel (S2); and S3, obtaining the blood flow rate in the main vessel on the basis of the calculated change of the lengths of the main vessel with time (S3). By using the method and apparatus for calculating the blood flow rate in a coronary artery and the electronic device, the automation of the calculation of the blood flow rate in a coronary artery is achieved, the calculated blood flow rate in the coronary artery is more accurate, and the calculation method is simple.

Abstract: A method for obtaining vascular pressure difference includes: receiving anatomical data of a part of a blood vessel segment, obtaining a geometric model of a target blood vessel according to the anatomical data; combining individual data according to the anatomical data to obtain a blood flow model of the target blood vessel and the target blood vessel blood flow velocity V; preprocess the geometric model to establish a cross-sectional morphology model, calculate the morphological difference function f(x) of the target vessel lumen, calculate the pressure difference at any two positions of the target vessel based on morphology ?P the difference of the target vessel lumen the relationship between function f(x) and blood flow velocity V. The method of obtaining the vascular pressure difference, by introducing the concept of morphology, the influence of the vascular morphology on the vascular pressure difference is clarified, improve the calculation accuracy of vascular pressure difference.

Abstract: Techniques are generally directed to selective reestablishment of Internet Protocol (IP) connectivity between a cable modem and a cable modem termination system (CMTS). IP connectivity between the cable modem and the CMTS is initially established through execution of a plurality of connectivity steps. After IP connectivity is lost, the cable modem determines which of the plurality of connectivity steps are desired for use in reestablishing IP connectivity, and sends a message to the CMTS indicating the desired IP connectivity step. The CMTS determines if the desired connectivity steps identified in the message may be used to reestablish IP connectivity, and sends a response message to the cable modem indicating if the desired connectivity steps may be used. IP connectivity is then reestablished using at least the desired connectivity steps.

Abstract: Techniques are generally directed to selective reestablishment of Internet Protocol (IP) connectivity between a cable modem and a cable modem termination system (CMTS). IP connectivity between the cable modem and the CMTS is initially established through execution of a plurality of connectivity steps. After IP connectivity is lost, the cable modem determines which of the plurality of connectivity steps are desired for use in reestablishing IP connectivity, and sends a message to the CMTS indicating the desired IP connectivity step. The CMTS determines if the desired connectivity steps identified in the message may be used to reestablish IP connectivity, and sends a response message to the cable modem indicating if the desired connectivity steps may be used. IP connectivity is then reestablished using at least the desired connectivity steps.