Abstract: A system may include a storage device that stores executable instructions, and at least one processor in communication with the storage device. When executing the executable instructions, the at least one processor may be configured to cause the system to obtain information relating to an object; determine a target operation mode for the object according to the information relating to the object; obtain information relating to previous operations of a plurality of candidate scanning devices from a database; select a target scanning device for the object according to the target operation mode and the information relating to the previous operations of the plurality of candidate scanning devices; and generate a schedule for operating the target scanning device to scan the object.

Abstract: The present disclosure provides a voltage calibration device, method and imaging system. The voltage calibration device, comprising: a channel selector and a calibration unit, wherein an input end of the channel selector is selectively connected to channels to be calibrated of multiple detectors to receive a common mode voltage of each channel to be calibrated; a first input end of the calibration unit is connected to an output end of the channel selector, an output end of the calibration unit is connected to the multiple channels to be calibrated, the calibration unit adjusting the common mode voltage of each channel to be calibrated to a calibrated common mode voltage to cause each channel to be calibrated to be detected under its corresponding calibrated common mode voltage.

Abstract: The present disclosure relates to systems and methods for determining coincidence events. The systems and methods may obtain a cycle difference between a first clock cycle at which a first single event occurs and a second clock cycle at which a second single event occurs. The systems and methods may also obtain a first time-to-digital converter (TDC) value of the first single event and a second TDC value of the second single event. The systems and methods may then determine a difference between the first single event and the second single event based on the cycle difference, the first TDC value, and the second TDC value, and determine whether the first single event and the second single event have a coincidence relationship according to the difference.

Abstract: The present disclosure relates to systems and methods for determining true coincidence events. The systems and methods may determine original coincidence events based on time of occurrence of a plurality of single events. The systems and methods may also determine random coincidence events by processing the plurality of single events based on cycle offsets of detector units that detect the plurality of single events. A difference of any two cycle offsets may be greater than a predetermined coincidence window width. The systems and methods may then determine the true coincidence events based on the original coincidence events and the random coincidence events.

Abstract: The present disclosure provides a voltage calibration device, method and imaging system. The voltage calibration device, comprising: a channel selector and a calibration unit, wherein an input end of the channel selector is selectively connected to channels to be calibrated of multiple detectors to receive a common mode voltage of each channel to be calibrated; a first input end of the calibration unit is connected to an output end of the channel selector, an output end of the calibration unit is connected to the multiple channels to be calibrated, the calibration unit adjusting the common mode voltage of each channel to be calibrated to a calibrated common mode voltage to cause each channel to be calibrated to be detected under its corresponding calibrated common mode voltage.

Abstract: The present disclosure relates to systems and methods for positioning a subject. The method may include generating a first image of the subject disposed on a scanning board of an imaging device. The first image may include position information of the subject. The method may further include generating a second image of the subject which includes information associated with one or more organs of the subjects. Additionally, the method may include determining the position of a ROI based on the first image and the second image. The method may further include operating the imaging device to scan a target portion of the subject.

Abstract: A system may include a storage device that stores executable instructions, and at least one processor in communication with the storage device. When executing the executable instructions, the at least one processor may be configured to cause the system to obtain information relating to an object; determine a target operation mode for the object according to the information relating to the object; obtain information relating to previous operations of a plurality of candidate scanning devices from a database; select a target scanning device for the object according to the target operation mode and the information relating to the previous operations of the plurality of candidate scanning devices; and generate a schedule for operating the target scanning device to scan the object.

Abstract: The present disclosure relates to a data acquisition device and a configuration method. The device includes a channel, wherein the channel includes a data control panel and a plurality of detection components. At least one of the plurality of detection components is directly connected to the data control panel. The data control panel may be configured to identify the channel and send a configuration command to the plurality of detection components. The plurality of detection components may determine channel location numbers of the plurality of detection components based on the configuration command and send the channel location numbers to the data control panel. The data control panel may determine identification numbers for the plurality of detection components based on the channel location numbers and allocate the identification numbers to the plurality of detection components.

Abstract: A system may include a storage device that stores executable instructions, and at least one processor in communication with the storage device. When executing the executable instructions, the at least one processor may be configured to cause the system to obtain information relating to an object; determine a target operation mode for the object according to the information relating to the object; obtain information relating to previous operations of a plurality of candidate scanning devices from a database; select a target scanning device for the object according to the target operation mode and the information relating to the previous operations of the plurality of candidate scanning devices; and generate a schedule for operating the target scanning device to scan the object.

Abstract: The present disclosure relates to systems and methods for positioning a subject. The method may include generating a first image of the subject disposed on a scanning board of an imaging device. The first image may include position information of the subject. The method may further include generating a second image of the subject which includes information associated with one or more organs of the subjects. Additionally, the method may include determining the position of a ROI based on the first image and the second image. The method may further include operating the imaging device to scan a target portion of the subject.

Abstract: The present disclosure relates to systems and methods for positioning a subject. The method may include generating a first image of the subject disposed on a scanning board of an imaging device. The first image may include position information of the subject. The method may further include generating a second image of the subject which includes information associated with one or more organs of the subjects. Additionally, the method may include determining the position of a ROI based on the first image and the second image. The method may further include operating the imaging device to scan a target portion of the subject.

Abstract: The present disclosure relates to systems and methods for determining true coincidence events. The systems and methods may determine original coincidence events based on time of occurrence of a plurality of single events. The systems and methods may also determine random coincidence events by processing the plurality of single events based on cycle offsets of detector units that detect the plurality of single events. A difference of any two cycle offsets may be greater than a predetermined coincidence window width. The systems and methods may then determine the true coincidence events based on the original coincidence events and the random coincidence events.

Abstract: The present disclosure relates to a data acquisition device and a configuration method. The device includes a channel, wherein the channel includes a data control panel and a plurality of detection components. At least one of the plurality of detection components is directly connected to the data control panel. The data control panel may be configured to identify the channel and send a configuration command to the plurality of detection components. The plurality of detection components may determine channel location numbers of the plurality of detection components based on the configuration command and send the channel location numbers to the data control panel. The data control panel may determine identification numbers for the plurality of detection components based on the channel location numbers and allocate the identification numbers to the plurality of detection components.

Abstract: The present disclosure relates to a data acquisition device and a configuration method. The device includes a channel, wherein the channel includes a data control panel and a plurality of detection components. At least one of the plurality of detection components is directly connected to the data control panel. The data control panel may be configured to identify the channel and send a configuration command to the plurality of detection components. The plurality of detection components may determine channel location numbers of the plurality of detection components based on the configuration command and send the channel location numbers to the data control panel. The data control panel may determine identification numbers for the plurality of detection components based on the channel location numbers and allocate the identification numbers to the plurality of detection components.

Abstract: A system may include a storage device that stores executable instructions, and at least one processor in communication with the storage device. When executing the executable instructions, the at least one processor may be configured to cause the system to obtain information relating to an object; determine a target operation mode for the object according to the information relating to the object; obtain information relating to previous operations of a plurality of candidate scanning devices from a database; select a target scanning device for the object according to the target operation mode and the information relating to the previous operations of the plurality of candidate scanning devices; and generate a schedule for operating the target scanning device to scan the object.

Abstract: The present disclosure relates to systems and methods for positioning a subject. The method may include generating a first image of the subject disposed on a scanning board of an imaging device. The first image may include position information of the subject. The method may further include generating a second image of the subject which includes information associated with one or more organs of the subjects. Additionally, the method may include determining the position of a ROI based on the first image and the second image. The method may further include operating the imaging device to scan a target portion of the subject.

Abstract: A system may include a storage device that stores executable instructions, and at least one processor in communication with the storage device. When executing the executable instructions, the at least one processor may be configured to cause the system to obtain information relating to an object; determine a target operation mode for the object according to the information relating to the object; obtain information relating to previous operations of a plurality of candidate scanning devices from a database; select a target scanning device for the object according to the target operation mode and the information relating to the previous operations of the plurality of candidate scanning devices; and generate a schedule for operating the target scanning device to scan the object.

Abstract: The present disclosure relates to systems and methods for positioning a subject. The method may include generating a first image of the subject disposed on a scanning board of an imaging device. The first image may include position information of the subject. The method may further include generating a second image of the subject which includes information associated with one or more organs of the subjects. Additionally, the method may include determining the position of a ROI based on the first image and the second image. The method may further include operating the imaging device to scan a target portion of the subject.

Abstract: The present disclosure relates to a data acquisition device and a configuration method. The device includes a channel, wherein the channel includes a data control panel and a plurality of detection components. At least one of the plurality of detection components is directly connected to the data control panel. The data control panel may be configured to identify the channel and send a configuration command to the plurality of detection components. The plurality of detection components may determine channel location numbers of the plurality of detection components based on the configuration command and send the channel location numbers to the data control panel. The data control panel may determine identification numbers for the plurality of detection components based on the channel location numbers and allocate the identification numbers to the plurality of detection components.

Abstract: The present disclosure relates to systems and methods for positioning a subject. The method may include generating a first image of the subject disposed on a scanning board of an imaging device. The first image may include position information of the subject. The method may further include generating a second image of the subject which includes information associated with one or more organs of the subjects. Additionally, the method may include determining the position of a ROI based on the first image and the second image. The method may further include operating the imaging device to scan a target portion of the subject.