摘要:
Systems and methods for compensating motion artifacts in positron emission tomography (“PET”) imaging based on medical images acquired with a medical imaging system are provided. In some embodiments, the method includes acquiring PET data from a subject with a PET system during which at least a portion of the subject is undergoing motion, and providing medical images acquired from the subject using a medical imaging system, the medical images including regions depicting motion. The method also includes estimating, from the medical images, motion information associated with the motion of the at least a portion of the subject, and reconstructing a motion-corrected PET image using the PET data using a reconstruction algorithm that incorporates the motion information into a system matrix.
摘要:
Systems and methods for compensating motion artifacts in positron emission tomography (“PET”) imaging based on medical images acquired with a medical imaging system are provided. In some embodiments, the method includes acquiring PET data from a subject with a PET system during which at least a portion of the subject is undergoing motion, and providing medical images acquired from the subject using a medical imaging system, the medical images including regions depicting motion. The method also includes estimating, from the medical images, motion information associated with the motion of the at least a portion of the subject, and reconstructing a motion-corrected PET image using the PET data using a reconstruction algorithm that incorporates the motion information into a system matrix.
摘要:
A system and method for generating motion-corrected positron emission tomography (PET) images is provided. A subject is prepared to be imaged by arranging a plurality of motion tracking coils about the subject. Each of the plurality of motion tracking coil includes a conductor extending through a plurality of loops to form a coil and includes a sample material. PET coincidence events are acquired concurrently with magnetic resonance (MR) data generated using the plurality of motion tracking coils with an MR system. Motion data is determined from the MR data and is incorporated in PET reconstruction or applied to PET images to generate motion corrected PET images.
摘要:
A device for producing negative ion fragrance includes a basic body and a negative ion producer. The basic body is formed with a volatilizing cavity in the center for receiving therein the neck of a fragrant essential oil bottle or a fragrant essential oil bottle. The negative ion producer is provided with a negative ion shooting unit extending in the volatilizing cavity of the basic body. Negative ion produced by the negative ion shooting unit is mixed with the fragrant essential oil in the volatizing cavity and then their mixed vapor is sent out for use, elevating effect in use of fragrant essential oil.
摘要:
A safety device of a coffee pot includes a pot body provided with a water tank and a handle, an electric heater installed under the water tank of the pot body and a probe unit provided on the electric heater in the water tank for detecting the water level in the water tank. The probe has a function of disconnecting electric source automatically or disabling the electric heater to be electrified when water in the water tank is insufficient, ensuring safety in using the coffee pot.