Patents by Inventor Zijun JI
Zijun JI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240090369Abstract: Embodiments of the present disclosure provide a method and system for generating a fertilizer formula, the method is executed by a processor, comprising: obtaining a basic formula for fertilization; obtaining monitoring data based on a monitoring device; determining a soil feature of a predetermined point based on the monitoring data; determining an experiment scheme and experimental parameters based on the soil feature and an experimental design; determining a fertilization dosage and conducting an intelligent planting experiment based on the fertilization dosage and the basic formula for fertilization; obtaining experimental parameters and experimental yield data of each experimental processing, and optimized yield data of an optimized fertilization processing, and storing the experimental parameters, experimental yield data, and the optimized yield data in a storage unit; and determining a model for reduced fertilization of nitrogen, phosphorus, and potassium nutrients and generating the fertilizer formulaType: ApplicationFiled: September 15, 2023Publication date: March 21, 2024Applicant: INSTITUTE OF SOIL, FERTILIZER, RESOURCES AND ENVIRONMENT OF JIANGXI ACADEMY OF AGRICULTURAL SCIENCESInventors: Jianhua JI, Xianjin LAN, Zhenzhen LYU, Hongqian HOU, Xiumei LIU, Yiren LIU, Zijun WANG
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Publication number: 20230243988Abstract: A method and system for calibrating a PET scanner are described. The PET scanner may have a field of view (FOV) and multiple detector rings. A detector ring may have multiple detector units. A line of response (LOR) connecting a first detector unit and a second detector unit of the PET scanner may be determined. The LOR may correlate to coincidence events resulting from annihilation of positrons emitted by a radiation source. A first time of flight (TOF) of the LOR may be calculated based on the coincidence events. The position of the radiation source may be determined. A second TOF of the LOR may be calculated based on the position of the radiation source. A time offset may be calculated based on the first TOF and the second TOF. The first detector unit and the second detector unit may be calibrated based on the time offset.Type: ApplicationFiled: April 3, 2023Publication date: August 3, 2023Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Xinyu LYU, Qixiang ZHANG, Wenbing SONG, Zijun JI, Weiping LIU
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Patent number: 11619755Abstract: A method and system for calibrating a PET scanner are described. The PET scanner may have a field of view (FOV) and multiple detector rings. A detector ring may have multiple detector units. A line of response (LOR) connecting a first detector unit and a second detector unit of the PET scanner may be determined. The LOR may correlate to coincidence events resulting from annihilation of positrons emitted by a radiation source. A first time of flight (TOF) of the LOR may be calculated based on the coincidence events. The position of the radiation source may be determined. A second TOF of the LOR may be calculated based on the position of the radiation source. A time offset may be calculated based on the first TOF and the second TOF. The first detector unit and the second detector unit may be calibrated based on the time offset.Type: GrantFiled: May 25, 2020Date of Patent: April 4, 2023Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Xinyu Lyu, Qixiang Zhang, Wenbing Song, Zijun Ji, Weiping Liu
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Patent number: 11166682Abstract: A system for medical imaging is provided. The system includes a scanning device configured with a scanning cavity, a control device, and an output device configured within the scanning cavity. The control device is configured to obtain one or more scan protocols and acquire at least one guide instruction corresponding to the one or more scan protocols. The output device is configured to obtain guide information corresponding to the at least one guide instruction and present the guide information. The scanning device is configured to scan a subject with the presentation of the guide information according to the one or more scan protocols.Type: GrantFiled: May 16, 2018Date of Patent: November 9, 2021Assignee: SHANGHAJ UNITED IMAGING HEALTHCARE CO., LTD.Inventor: Zijun Ji
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Publication number: 20200284928Abstract: A method and system for calibrating a PET scanner are described. The PET scanner may have a field of view (FOV) and multiple detector rings. A detector ring may have multiple detector units. A line of response (LOR) connecting a first detector unit and a second detector unit of the PET scanner may be determined. The LOR may correlate to coincidence events resulting from annihilation of positrons emitted by a radiation source. A first time of flight (TOF) of the LOR may be calculated based on the coincidence events. The position of the radiation source may be determined. A second TOF of the LOR may be calculated based on the position of the radiation source. A time offset may be calculated based on the first TOF and the second TOF. The first detector unit and the second detector unit may be calibrated based on the time offset.Type: ApplicationFiled: May 25, 2020Publication date: September 10, 2020Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Xinyu LYU, Qixiang ZHANG, Wenbing SONG, Zijun JI, Weiping LIU
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Patent number: 10663608Abstract: A method and system for calibrating a PET scanner are described. The PET scanner may have a field of view (FOV) and multiple detector rings. A detector ring may have multiple detector units. A line of response (LOR) connecting a first detector unit and a second detector unit of the PET scanner may be determined. The LOR may correlate to coincidence events resulting from annihilation of positrons emitted by a radiation source. A first time of flight (TOF) of the LOR may be calculated based on the coincidence events. The position of the radiation source may be determined. A second TOF of the LOR may be calculated based on the position of the radiation source. A time offset may be calculated based on the first TOF and the second TOF. The first detector unit and the second detector unit may be calibrated based on the time offset.Type: GrantFiled: June 2, 2016Date of Patent: May 26, 2020Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Xinyu Lyu, Qixiang Zhang, Wenbing Song, Zijun Ji, Weiping Liu
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Publication number: 20180333111Abstract: A system for medical imaging is provided. The system includes a scanning device configured with a scanning cavity, a control device, and an output device configured within the scanning cavity. The control device is configured to obtain one or more scan protocols and acquire at least one guide instruction corresponding to the one or more scan protocols. The output device is configured to obtain guide information corresponding to the at least one guide instruction and present the guide information. The scanning device is configured to scan a subject with the presentation of the guide information according to the one or more scan protocols.Type: ApplicationFiled: May 16, 2018Publication date: November 22, 2018Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventor: Zijun JI
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Publication number: 20170082759Abstract: A method and system for calibrating a PET scanner are described. The PET scanner may have a field of view (FOV) and multiple detector rings. A detector ring may have multiple detector units. A line of response (LOR) connecting a first detector unit and a second detector unit of the PET scanner may be determined. The LOR may correlate to coincidence events resulting from annihilation of positrons emitted by a radiation source. A first time of flight (TOF) of the LOR may be calculated based on the coincidence events. The position of the radiation source may be determined. A second TOF of the LOR may be calculated based on the position of the radiation source. A time offset may be calculated based on the first TOF and the second TOF. The first detector unit and the second detector unit may be calibrated based on the time offset.Type: ApplicationFiled: June 2, 2016Publication date: March 23, 2017Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Xinyu LYU, Qixiang ZHANG, Wenbing SONG, Zijun JI, Weiping LIU