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公开(公告)号：US20200312459A1
公开(公告)日：2020-10-01
申请号：US16901033
申请日：2020-06-15
Inventor： YE LI , XIAOMAO FAN , QIHANG YAO , LIYAN YIN
Abstract: The present disclosure provides an atrial fibrillation signal recognition method, apparatus and device. The method comprises: obtaining an electrocardiogram signal to be recognized; inputting the electrocardiogram signal to be recognized to a pre-established atrial fibrillation signal recognition model, and outputting an atrial fibrillation signal recognition result, where the atrial fibrillation signal recognition model is established in the following way: obtaining a specified number of electrocardiogram sample signals and corresponding identifier information; balancing, according to the number of normal signals, atrial fibrillation signals by means of SMOTE; establishing a network structure of multiple convolutional neural networks, each of the convolutional neural networks being provided with a specific receptive field for recognizing the atrial fibrillation signals of a corresponding granularity; and inputting the normal signals and the balanced atrial fibrillation signals to the network structure for training to generate an atrial fibrillation signal recognition model.
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公开(公告)号：US20230152400A1
公开(公告)日：2023-05-18
申请号：US17992868
申请日：2022-11-22
Inventor： HAIRONG ZHENG , QIAOYAN CHEN , YE LI , CHAO LUO , XIN LIU
IPC: G01R33/3875 , A61B5/055
CPC classification number: G01R33/3875 , A61B5/055
Abstract: A shimming method and device, an electronic device, and a storage medium are disclosed. The shimming method includes: obtaining object static magnetic field distribution information corresponding to a target object, the object static magnetic field distribution information including the static magnetic field distribution information of the target object under the action of a main magnet of a magnetic resonance system; determining a target static magnetic field based on the object static magnetic field distribution information and a preset shim coil magnetic field distribution model; and adjusting at least one shim coil parameter in the shim coil magnetic field distribution model until a magnetic field uniformity of the target static magnetic field satisfies a preset condition, and accordingly obtaining at least one target shim coil parameter.
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公开(公告)号：US20190150778A1
公开(公告)日：2019-05-23
申请号：US15739719
申请日：2017-11-28
Inventor： YE LI , XIAOMAO FAN , YUNPENG CAI , QIHANG YAO , YUJIE YANG
IPC: A61B5/0452 , A61B5/04 , A61B5/0432 , A61B5/00 , A61B5/0472 , A61B5/0404 , A61B5/0456 , A61B5/0245
Abstract: Provided are an electrocardiogram signal parallel analysis apparatus, a mobile terminal incorporating the apparatus, and related methods. The apparatus includes an integrated memory, a central processing unit and a graphic processing unit. The integrated memory includes a first memory and a second memory for being used by the central processing unit and the graphic processing unit respectively, and the central processing unit may access the second memory. The central processing unit performs primary noise reduction on a received electrocardiogram original signal to obtain a primary electrocardiogram signal, and performs abnormal heartbeat classification preliminary screening on characteristic data extracted from the graphic processing unit to obtain suspected abnormal heartbeat data. The graphic processing unit performs characteristic extraction on the primary electrocardiogram signal to obtain characteristic data, performs secondary noise reduction on the primary electrocardiogram signal to obtain a secondary electrocardiogram signal, and processes the suspected abnormal heartbeat data and the secondary electrocardiogram signal by applying a template matching classification mode to obtain final abnormal heartbeat data.
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