Abstract:
A method of generating a response from a scanner in an imaging apparatus, a method of generating a medical image, an apparatus configured to generate a response of a scanner, and an apparatus configured to generate a medical image are provided. The method of generating a response of a scanner includes: generating point spread functions (PSFs) for the amount of the acquired signal from a point source; and generating the response of the scanner for the amount of the signal acquired, based on the PSF.
Abstract:
A method and an apparatus for generating images are provided. The method includes generating a first sinogram for a state of an object from among states of the object based on a motion of the object, and a second sinogram for the states, based on data obtained from the object, and determining a region of interest (ROI) of the object based on the first sinogram. The method further includes extracting, from the second sinogram, third sinograms corresponding to the ROI, and estimating motion information of the ROI based on the third sinograms. The method further includes correcting the data based on the motion information.
Abstract:
A method and apparatus for generating an image with a correction model are provided. The method of generating a correction model of a detector may involve: changing a location of a point source and obtaining a signal emitted from the point source; calculating at least one parameter representing a distribution characteristic of the obtained signal with respect to a plurality of projection directions at each of the changed locations; and generating the correction model of the detector based on the at least one parameter.
Abstract:
Methods and apparatuses for generating a blur model of a detector, and methods and apparatus for generating a medical image are provided. A method of generating a blur model of a detector may involve: changing locations of linear gamma ray sources along at least one line and obtaining signals emitted from the linear gamma ray sources; obtaining a point spread function (PSF) with respect to at least one voxel included in the at least one line; and generating a blur model of the detector from the PSF.
Abstract:
A method and apparatus generate an image in positron emission tomography (PET). The method and apparatus are configured to divide detected signals into sections at time intervals. The detected signals are emitted from tracers introduced into a target. The method and apparatus are also configured to generate unit signals for each of the sections by accumulating the divided signals at each respective section. The method and apparatus are further configured to classify the unit signals into groups based on characteristics of each of the unit signals, and generate the medical image of the target from the unit signals classified into the groups.
Abstract:
Provided is a magnetic resonance imaging and positron emission tomography (MRI-PET) system. The MRI-PET system includes a PET unit and a radiofrequency (RF) coil disposed within a gradient coil assembly.
Abstract:
A method and apparatus for generating a system response of a scanner of an imaging apparatus includes generating the system response based on a signal emitted from a point source located in a scanning space of the scanner, setting components that are factors affecting the system response, generating a component response based on a signal received from the scanner with respect to each of the components, and adjusting the system response by using the component responses.