Suzhou Rainmed Medical Technology Co., Ltd.

Suzhou Metabrain Intelligent Technology Co., Ltd.

Guangzhi Liu

Zhiyuan Wang

Yunfei Huo

Xingyun Wu

Lin Chen

Wei Dai

Tao Zhu

An Wu

Wenbin Cao

Tieci Yi

Jianping Li

Shengfu Liu

Xiaowei Zhang

Bo Zheng

Huanlai Zhu

Zhitao Xin

Xinyu Wu

Yong Huo

Yanjun Gong

The present application relates to an immersion liquid-cooling system and a control method therefor, and a server. The immersion liquid-cooling system includes a liquid-cooling chassis filled with a liquid-state cooling working medium and a mainboard fixed in the liquid-cooling chassis in a vertical direction; the mainboard is provided with at least one high-power component and at least one low-power component; the liquid-cooling chassis includes a chassis body, main fluid deflectors, secondary fluid deflectors, and flow adjustment plates; the main fluid deflectors extend in the vertical direction to form a main flow channel, and the main flow channel contains all high-power components; the secondary fluid deflectors are arranged opposite to the main fluid deflectors to form secondary flow channels, and the secondary flow channels contain the low-power components; and the secondary flow channels are connected to the main flow channel by means of the flow adjustment plates.

Immersion liquid-cooling system and control method therefor, and server

A liquid-cooling heat dissipation system and control method for servers are provided. The system includes: a heat exchanger, a vacuum generator, and n liquid-cooling tank bodies. A liquid-cooling heat dissipation mode of at least one liquid-cooling tank body is spraying heat dissipation, and at least two liquid-cooling tank bodies have different liquid-cooling heat dissipation modes. The first liquid-cooling tank body includes a first liquid storage tank configured to store cooling liquid, the iliquid-cooling tank body is connected with the (i+1)liquid-cooling tank body by means of the heat exchanger, and the nliquid-cooling tank body is connected with the first liquid storage tank.

Liquid-cooling heat dissipation system, control method, apparatus and device for servers

The present disclosure provides a method for correcting a resting blood flow velocity on the basis of an interval time between angiogram images, comprising: acquiring, in an angiography state, an average blood flow velocity Vfrom a coronary artery inlet to a distal end of a coronary artery stenosis (S); acquiring a time difference Δt between start times of two adjacent bolus injections of contrast agent (S); obtaining a correction coefficient K according to the time difference Δt (S); obtaining a resting blood flow velocity Vaccording to the correction coefficient K and the average blood flow velocity V(S), as well as an apparatus configured for implementing the above method. The disclosure obtains the resting blood flow velocity Vaccording to the correction coefficient K and the average blood flow velocity V.

Method and apparatus for correcting blood flow velocity on the basis of interval time between angiogram images

The present disclosure provides a method and an apparatus for acquiring a contour line of a blood vessel according to a centerline of the blood vessel. The method comprises: extracting a centerline of a blood vessel according to a two-dimensional coronary artery angiogram image (S); obtaining an image of a straightened blood vessel according to the centerline of the blood vessel (S); setting a threshold Dfor a diameter of the blood vessel on the image of the straightened blood vessel (S); generating a preset contour line of the blood vessel on both sides of a centerline of the straightened blood vessel according to the D(S); making the preset contour line of the blood vessel step-by-step approach the centerline of the straightened blood vessel to acquire a contour line of the straightened blood vessel (S); projecting the contour line of the straightened blood vessel back onto the image of the centerline of the blood vessel to obtain a contour line of the blood vessel (S).

Method and apparatus for acquiring contour line of blood vessel according to centerline of blood vessel

A smoothly switching negative pressure liquid cooling system is provided in the present application, wherein a gas extraction pipeline of a gas circuit is used to extract gas to form a negative pressure environment, a gas supply pipeline is used to supply the gas to form a positive pressure environment. One of the three gas-liquid chambers is used for feeding the liquid and one of the three gas-liquid chambers is used for discharging the liquid to form a coolant circulation. The other chamber maintains a negative pressure environment. At the moment of switching a working state, the chamber that maintains the negative pressure environment forms a large pressure difference, so that the coolant enters the chamber quickly. Before the working state is switched, enough negative pressure has been formed to ensure the fluidity of the coolant at the moment of switching the working state.

Stably switched negative-pressure liquid cooling system and stably switched negative-pressure liquid cooling control method

A method for calculating coronary artery fractional flow reserve includes determining myocardial volume by extracting myocardial images; locating a coronary artery inlet and accurately segmenting coronary arteries; generating a grid model required for calculation by edge detection of coronary artery volume data; determining myocardial blood flow in a rest state and CFR by non-invasive measurement; calculating the total flow at the coronary artery inlet in a maximum hyperemia state; determining the flow in different blood vessels in the coronary artery tree in the maximum hyperemia state and then determining flow velocity Vin the maximum hyperemia state; using Vas the flow velocity at the coronary artery inlet and calculating a pressure drop ΔP from the coronary artery inlet to a distal end of a coronary stenosis, and a mean intracoronary pressure Pd at the distal end of the stenosis P=P−ΔP, and calculating fractional flow reserve.

Method for calculating coronary artery fractional flow reserve on basis of myocardial blood flow and CT images

A method for calculating an index of microcirculatory resistance includes determining myocardial volume by extracting myocardial images; locating a coronary artery inlet and accurately segmenting coronary arteries; generating a grid model required for calculation; determining myocardial blood flow in a rest state and CFR; calculating total flow at the coronary artery inlet in a maximum hyperemia state; determining flow in different blood vessels in a coronary artery tree in the maximum hyperemia state and then determining a flow velocity Vin the maximum hyperemia state; obtaining the average conduction time in the maximum hyperemia state Tmn, and calculating a pressure drop ΔP from the coronary artery inlet to a distal end of a coronary artery stenosis, and a mean intracoronary pressure Pat the distal end of the stenosis P=P−ΔP, and calculating the index of microcirculatory resistance.

Method for calculating index of microcirculatory resistance based on myocardial blood flow and CT image

Disclosed is a method for calculating fractional flow reserve, comprising: collecting a pressure at the coronary artery inlet of heart by a blood pressure sensor in real-time, and storing a pressure value in a data linked table; obtaining an angiographic time according to the angiographic image, finding out the corresponding data from data queues based on time index using the angiographic time as an index value, screening out stable pressure waveforms during multiple cycles, and obtaining an average pressure Pa; and obtaining a length of the segment of blood vessel from angiographic images of the two body positions, and obtaining a blood flow velocity V; calculating a pressure drop &#x394;P for the segment of the blood vessel using the blood flow velocity V at the coronary artery inlet, and calculating a pressure Pd at the distal end of the blood vessel, and further calculating the angiographic fractional flow reserve.

Method for calculating fractional flow reserve based on pressure sensor and angiographic image

A method, device and system for calculating a microcirculation indicator are provided. A method includes: injecting a vasodilator and subjecting a blood vessel to be measured to coronary angiography; selecting at least one angiographic image of a first body position when the blood vessel to be measured is in a resting state and an angiographic image of a second body position when the blood vessel to be measured is in a dilated state; obtaining a three-dimensional coronary artery vascular model by three-dimensional modeling; injecting a contrast agent, and obtaining time Ttaken for the contrast agent flowing from an inlet to an outlet of the segment of blood vessel and time Ttaken for the contrast agent flowing from an inlet to an outlet of the segment of blood vessel; obtaining the microcirculation indicator.

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Jiangsu, China

Guangzhi Liu