Abstract: A system and method relating to image processing are provided. The method may include the following operations. First data at a first bed position and second data at a second bed position may be received. The first bed position and the second bed position may have an overlapping region. A first image and a second image may be reconstructed based on the first data and the second data, respectively. Third data and fourth data corresponding to the overlapping region may be extracted from the first data and the second data, respectively. Merged data may be generated by merging the third data and the fourth data. A third image may be reconstructed based on the merged data. A fourth image may be generated through image composition based on the first image, the second image, and the third image.

Abstract: The present disclosure relates to systems and methods for attenuation correction. The system includes a coil module, which includes a flexible coil and a supporter. The supporter may be configured to hold the flexible coil. The flexible coil may be deformed to form a receiving space.

Abstract: A method include obtaining at least one first PET image of a subject acquired by a PET scanner and at least one first MR image of the subject acquired by an MR scanner. The method may also include obtaining a target neural network model. The target neural network model may provide a mapping relationship between PET images, MR images, and corresponding attenuation correction data, and output attenuation correction data associated with a specific PET image of the PET images. The method may further include generating first attenuation correction data corresponding to the subject using the target neural network model based on the at least one first PET image and the at least one first MR image of the subject, and determining a target PET image of the subject based on the first attenuation correction data corresponding to the subject.

Abstract: The present disclosure provides a system and method for PET image reconstruction. The method may include processes for obtaining physiological information and/or rigid motion information. The image reconstruction may be performed based on the physiological information and/or rigid motion information.

Abstract: The present disclosure relates to systems and methods for attenuation correction. The system includes a coil module, which includes a flexible coil and a supporter. The supporter may be configured to hold the flexible coil. The flexible coil may be deformed to form a receiving space.

Abstract: A system and method for image reconstruction are provided. A first region of an object may be determined. The first region may correspond to a first voxel. A second region of the object may be determined. The second region may correspond to a second voxel. Scan data of the object may be acquired. A first regional image may be reconstructed based on the scan data. The reconstruction of the first regional image may include a forward projection on the first voxel and the second voxel and a back projection on the first voxel.

Abstract: The present disclosure relates to systems and methods for attenuation correction. The system includes a coil module, which includes a flexible coil and a supporter. The supporter may be configured to hold the flexible coil. The flexible coil may be deformed to form a receiving space.

Abstract: A system and method for image reconstruction are provided. A first region of an object may be determined. The first region may correspond to a first voxel. A second region of the object may be determined. The second region may correspond to a second voxel. Scan data of the object may be acquired. A first regional image may be reconstructed based on the scan data. The reconstruction of the first regional image may include a forward projection on the first voxel and the second voxel and a back projection on the first voxel.

Abstract: An air exchanging device according to the invention is mounted to a wall. An inner side of the wall is the indoor space, and an outer side of the wall is the outdoor space. The wall has an installation hole. The air exchanging device includes a housing, a first fan unit and a second fan unit. The housing has a compartment. The housing has a first through-hole, a second through-hole and a third through-hole. The first fan unit is received in the compartment and includes a first air inlet intercommunicating with the second through-hole, and a first air outlet intercommunicating with the first through-hole. The second fan unit is received in the compartment. The second fan unit includes a second air inlet intercommunicating with the third through-hole, and a second air outlet intercommunicating with the second through-hole.

Abstract: A system and method relating to image processing are provided. The method may include the following operations. First data at a first bed position and second data at a second bed position may be received. The first bed position and the second bed position may have an overlapping region. A first image and a second image may be reconstructed based on the first data and the second data, respectively. Third data and fourth data corresponding to the overlapping region may be extracted from the first data and the second data, respectively. Merged data may be generated by merging the third data and the fourth data. A third image may be reconstructed based on the merged data. A fourth image may be generated through image composition based on the first image, the second image, and the third image.

Abstract: The present disclosure relates to systems and methods for attenuation correction. The system includes a coil module, which includes a flexible coil and a supporter. The supporter may be configured to hold the flexible coil. The flexible coil may be deformed to form a receiving space.

Abstract: A system and method relating to image processing are provided. The method may include the following operations. First data at a first bed position and second data at a second bed position may be received. The first bed position and the second bed position may have an overlapping region. A first image and a second image may be reconstructed based on the first data and the second data, respectively. Third data and fourth data corresponding to the overlapping region may be extracted from the first data and the second data, respectively. Merged data may be generated by merging the third data and the fourth data. A third image may be reconstructed based on the merged data. A fourth image may be generated through image composition based on the first image, the second image, and the third image.

Abstract: The present disclosure provides a system and method for PET image reconstruction. The method may include processes for obtaining physiological information and/or rigid motion information. The image reconstruction may be performed based on the physiological information and/or rigid motion information.

Abstract: The present disclosure provides a system and method for PET image reconstruction. The method may include processes for obtaining physiological information and/or rigid motion information. The image reconstruction may be performed based on the physiological information and/or rigid motion information.

Abstract: A motor includes a base, a winding assembly and a rotor. The base includes a pivoting portion. The winding assembly includes a support. The support includes at least one coil supporting portion and a circuit supporting portion connected to the at least one coil supporting portion. A coil is arranged on each of the at least one coil supporting portion. A circuit is arranged on the circuit supporting portion and electrically connected to the coil or coils. A folding portion is arranged between the at least one coil supporting portion and the circuit supporting portion. The circuit supporting portion and the at least one coil supporting portion are folded and stacked together via the folding portion. The rotor is rotatably coupled to the pivoting portion of the base. Due to the arrangement of the folding portion, a radial width of the motor is efficiently reduced.

Abstract: A system and method for image reconstruction are provided. A first region of an object may be determined. The first region may correspond to a first voxel. A second region of the object may be determined. The second region may correspond to a second voxel. Scan data of the object may be acquired. A first regional image may be reoncstrcted based on the scan data. The reconstruction of the first regional image may include a forward projection on the first voxel and the second voxel and a back projection on the first voxel.

Abstract: The present invention provides a motor winding assembly including a flexible base plate and a winding assembly. The flexible base plate includes a plurality of supports. A bridge is connected between adjacent two of the plurality of supports. Each of the plurality of supports has a center, and the flexible base plate has a reference line extending through the centers of the plurality of supports. The bridge is not located on the reference line. The winding assembly includes a plurality of winding units. Each of the plurality of supports is provided with at least one winding unit. An electrical path is located on the bridge between the adjacent two of the plurality of supports and electrically connected to the winding units of the adjacent two of the plurality of supports. In this arrangement, the total length of the flexible base plate is reduced.

Abstract: The present disclosure provides a positron emission tomography (PET) system and an image reconstruction method thereof. The PET system may include a plurality of annular detector units arranged along an axial direction. Each of the detector units may generate a plurality of single event counts. The PET system may further include a plurality of coincidence logic circuits connected to one or more of the detector units. The coincidence logic circuits may be configured to count coincidence events. Single event data generated by each of the detector units may be transmitted to the corresponding coincidence logic circuit. The plurality of coincidence logic circuits may synchronically generate coincidence counts relating to the plurality of detector units.

Abstract: The present disclosure provides a system and method for PET image reconstruction. The method may include processes for obtaining physiological information and/or rigid motion information. The image reconstruction may be performed based on the physiological information and/or rigid motion information.

Abstract: A system and method relating to image processing are provided. The method may include the following operations. First data at a first bed position and second data at a second bed position may be received. The first bed position and the second bed position may have an overlapping region. A first image and a second image may be reconstructed based on the first data and the second data, respectively. Third data and fourth data corresponding to the overlapping region may be extracted from the first data and the second data, respectively. Merged data may be generated by merging the third data and the fourth data. A third image may be reconstructed based on the merged data. A fourth image may be generated through image composition based on the first image, the second image, and the third image.