2results about How to "Imaging time is short" patented technology

The present invention relates to a near-field metasurface antenna fast computational imaging method based on a deep convolutional neural network, including: reflecting the mapping relationship between echo measurement values ​​and scene target scattering coefficient distribution by constructing a measurement matrix; constructing a near-field MSACI-Net imaging network based on a convolutional neural network, training the near-field MSACI-Net imaging network, and reconstructing a receiving matrix; designing a network training algorithm according to the near-field MSACI-Net imaging network, using a mean square error to calculate the loss between the network prediction value and the true value, and using the Adam optimization algorithm to minimize the loss of the near-field MSACI-Net imaging network; using measured field data to train the near-field MSACI-Net imaging network, and reconstructing high-quality original target information in real time and with high precision after the training is completed. The present invention is based on a deep convolutional neural network, and the constructed metasurface antenna computational imaging network quickly realizes near-field metamaterial aperture calculation, and can quickly and accurately image point-sized targets and more complex targets.

The application discloses a kind of near-infrared long afterglow luminescent nano probes, its preparation method and application, belong to near-infrared long afterglow material field. With mesoporous silica as template, with zinc acetate, gallium nitrate, tin chloride, chromium acetate, chromium nitrate and yttrium nitrate as doped metal raw materials, long afterglow luminescent core is obtained by reaction and calcination;The outer layer of long afterglow luminescent core is coated with manganese dioxide, to obtain pre-product;Pre-product is surface modified, and coupling target molecule plerixafor, i.e. near-infrared long afterglow luminescent nano probe. The near-infrared long afterglow luminescent nano probe has good biological safety, can be effectively enriched in the tumor area in vivo after mouse tail vein injection, can realize high-sensitivity imaging of multiple small tumors in vivo under red light LED irradiation, and the imaging time is short, suitable for intraoperative imaging, can be used for the imaging of breast cancer tumor model to guide tumor resection.