Abstract: The present invention discloses a low dose Sinogram denoising and PET image reconstruction method based on teacher-student generator, the adopted network model is divided into a Sinogram denoising module and a PET image reconstruction module, the entire network needs to be processed in a training stage and a test stage. In the training stage: the present invention uses the denoising module to denoise the low dose Sinogram, and then makes the reconstruction module use the denoised Sinogram to reconstruct, in which the teacher generator is introduced in the training stage to constrain the whole, the denoising module is decoupled from the reconstruction module, and a better reconstructed image is obtained through training. In the testing stage, the present invention only needs to input low-dose Sinogram to the denoising module to obtain the denoised Sinogram, and then input the denoised Sinogram to the student generator to get the final reconstruction image.

Abstract: The present invention discloses a method for constructing an intracardiac abnormal activation point location model based on CNN and LSTM. The model can well locate specific locations of abnormal activation points of VT and obtain three-dimensional coordinates of the locations, while obtaining 12-lead body surface potential data of a patient. The method introduces an idea of deep learning into locating of the abnormal activation points of ventricular tachycardia, uses collected QRS data as an input in a training phase, as well as three-dimensional coordinates of the QRS data corresponding to mapping points as a label to train a CNN-LSTM network, utilizes Conv1D to extract features from the input data, employs LSTM for feature fusion in a time domain, and exploits fully connected layers for regression prediction of the three-dimensional coordinates to finally construct the CNN-LSTM network.