Abstract: An apparatus and method for compensating for an artifact of higher order diffusion Magnetic Resonance Imaging (MRI) are provided. The apparatus includes a construction unit configured to construct a diffusion q-space matrix, a correction unit configured to correct an image shift in a phase encoding direction in the constructed diffusion q-space matrix, a reconstruction processing unit configured to reconstruct a q-space of a Diffusion Spectrum Imaging (DSI) based on the corrected image shift, and a tracking processing unit to process a DSI fiber tracking using the reconstructed q-space of the DSI.

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: An X-ray detector capable of independently controlling a read-out rate for each region, an X-ray imaging apparatus having the same, and a method of controlling the same are provided. The X-ray detector includes a plurality of pixels which are two-dimensionally arranged and configured to output an electrical signal corresponding to incident X-rays, a plurality of gate lines configured to connect the plurality of pixels in a row direction, a plurality of data lines configured to connect the plurality of pixels in a column direction, a read-out circuit configured to read out the electrical signal generated by the plurality of pixels through the plurality of data lines, and a switcher configured to independently turn connections between the respective data lines in the plurality of data lines and the read-out circuit on and off.

Abstract: An X-ray imaging apparatus and method are provided. The X-ray imaging apparatus according to an aspect includes an X-ray source configured to radiate X-rays onto a subject region, an X-ray detector configured to detect the radiated X-rays and obtain a plurality of frame images of the subject region, and an ROI filter located between the X-ray source and the X-ray detector, configured to move toward the X-ray source and the X-ray detector, and configured to filter the X-rays radiated from the X-ray source.

Abstract: An X-ray imaging apparatus is provided. The X-ray imaging apparatus includes an X-ray generator configured to radiate X-rays onto an object having a region of interest (ROI) and a non-ROI, a filter configured to adjust an X-ray dose of the X-rays incident on the ROI and the non-ROI, an X-ray detector configured to detect the X-rays transmitted through the object and convert the X-rays into X-ray data, and an image processing unit configured to obtain a frame image using the X-ray data, register the obtained frame image to a previous frame image, synthesize the frame image and the previous frame image, and generate a reconstructed frame image.

Abstract: Disclosed herein are an X-ray image apparatus and a control method for the same. The X-ray image apparatus includes an X-ray generator configured to sequentially irradiate an object with a plurality of X-rays of mutually different energy bands, an X-ray detector configured to acquire a plurality of pieces of X-ray data corresponding to the plurality of mutually different energy bands by detecting X-rays transmitted through the object, an image processor configured to convert the acquired plurality of pieces of X-ray data into a plurality of X-ray images and separate blood vessel X-ray images of the object from the plurality of X-ray images, and a controller configured to control operations of the X-ray generator so that the sequentially irradiated plurality of X-rays of the mutually different energy bands are repeatedly irradiated for fixed cycles.

Abstract: The image reconstruction method includes performing a forward projection of a first image of an object using a line integral-based value and a point spread function (PSF)-based value to acquire a forward projection value, and performing a back projection of raw image data using the forward projection value to acquire a second image of the object.

Abstract: An image correction method includes detecting signals emitted from a tracer introduced into a target; intermittently extracting some of the detected signals according to a code string in which different codes are arranged; generating an image of the target using the extracted signals; and correcting the generated image based on at least one characteristic of the generated image.

Abstract: Provided is a magnetic resonance imaging (MRI) apparatus. The MRI apparatus includes a magnet configured to generate a magnetic field; a magnetic field coil configured to generate a gradient magnetic field and the magnetic field coil is disposed inside the magnet; and a radio-frequency (RF) coil unit comprising RF coil elements and the RF coil unit is disposed inside the magnetic field coil.

Abstract: A method of shimming a magnetic field, includes applying radio frequency (RF) signals to an object, using a transceiver coil, and calibrating phase offsets of magnetic resonance signals acquired from the object through a receiver coil. The method further includes generating RF signals to be applied through the transceiver coil based on magnetic resonance signals acquired from the object through the transceiver coil and the calibrated magnetic resonance signals.

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 magnetic resonance imaging (MRI) system includes a main magnet configured to generate a static magnetic field, a gradient coil configured to generate a gradient magnetic field, and a radio frequency (RF) coil including a plurality of RF coils corresponding to volumes representing target regions of a subject.

Abstract: Provided are apparatuses and methods for magnetic resonance imaging (MRI). The magnetic resonance imaging (MRI) method includes applying radio frequency (RF) pulses to an object in a magnetic field, the RF pulses having different frequency bands for each of at least two types of nucleus in the object; applying predetermined pulse sequences for each type of nucleus to the object; receiving magnetic resonance signals emitted by each nucleus in response to the RF pulses and the predetermined pulse sequences; and generating an image of the object based on the received magnetic resonance signals.

Abstract: An image generation method includes classifying data according to a motion period of an object; generating respective sinograms from the classified data; updating an intermediate sinogram for an intermediate image using the sinograms; generating an updated intermediate image by performing a back projection on the updated intermediate sinogram; and generating an image in which a motion of the object is compensated by sequentially applying the sinograms in a process of generating the updated intermediate image.

Abstract: A method and apparatus for estimating a position distribution of radiation emission The method and apparatus include obtaining a time difference between radiations detected by a pair of detectors, and creating a probability distribution function (PDF) indicating the probability of where the radiations actually were or may have been emitted. The PDF may be created based on the time difference and timing resolutions of the pair of detectors.

Abstract: A motion information estimation method and an image generation apparatus are provided. The image generation apparatus may include an image data obtaining unit for obtaining image data of the anatomic features of a subject. The image generation apparatus may also include a region-of-interest (ROI) determining unit for determining a ROI in the image data, where motion is generated in the ROI corresponding to motion of the subject. The apparatus may also include a sinogram generating unit for generating first sinograms corresponding to a plurality of states of the ROI from data obtained from the subject during a first time. Additionally, the apparatus may include an extracting unit for extracting feature values of the subject from the first sinograms, respectively, and a motion information estimating unit for estimating motion information of the subject by referring to the feature values of the subject with respect to the plurality of states.

Abstract: Provided are a method and apparatus for obtaining a magnetic resonance imaging (MRI) image of a subject. Typically, MRI image processing that incorporates fat suppression takes a large amount of time to complete. According to various aspects, image processing that incorporates fat suppression may be postponed until MRI data is repeatedly obtained. By doing so, for example, more MRI data may be obtained during a time period of a heartbeat.

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 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 apparatus for capturing a magnetic resonance image in which processes of generating T1 contrast for different regions of an object overlap with each other, thereby obtaining a magnetic resonance image having an improved contrast between different tissues within a short time. Therefore, a time required for obtaining a magnetic resonance image may be reduced, and a magnetic resonance image enabling improved diagnosis of a disease or other abnormal condition may be provided.