Yonsei University

Samsung Electronics Co., Ltd.

Min-oh Kim

Dong-hyun Kim

Na-rae Choi

Joon-Sung Lee

Do-sik Hwang

Dong-yeob Han

Hae-kyung Jung

Eun-hae Joe

Jin-seong Jang

Tae-joon Eo

Yoon-ho Nam

Jae-Sung Lee

Yong-sup Park

Young-yoon Lee

Sang-Young Zho

Jong-buhm Park

Young-woon Lee

Lae-hoon Kang

Provided are a method and apparatus for processing a magnetic resonance (MR) image of an object including first and second materials on a magnetic resonance imaging (MRI) apparatus by using multi-parameter mapping including applying to the object a plurality of radio frequency (RF) pulses separated by a first repetition time and a second repetition time, the first repetition time and the second repetition time being determined based on the first material and the second material; undersampling first MR signals corresponding to the first material and second MR signals corresponding to the second material in a K-space; and performing matching between the undersampled first and the undersampled second MR signals and a signal model for the multi-parameter mapping to determine attribute values corresponding to the first and the second materials at at least one point in an MR image of the object.

Method and apparatus for quantifying properties of an object through magnetic resonance imaging (MRI)

Provided is a magnetic resonance imaging (MRI) apparatus. The MRI apparatus includes: a storage configured to store a plurality of MR signal data sets generated by applying a plurality of values of a first MR parameter and a plurality of values of a second MR parameter to an MR signal data generation model; a data acquisition unit configured to acquire an MR signal data set for a specific position of an object by undersampling an MR signal, based on the values of the first MR parameter; and an image processor configured to extract an MR signal data set that matches the MR signal data set acquired by undersampling the MR signal (hereinafter referred to as the 'undersampled MR signal data set') from among the stored MR signal data sets, obtain a value of the second MR parameter for the undersampled MR signal data set based on the extracted MR signal data set, and interpolate unsampled MR signal data in the undersampled MR signal data set (hereinafter, referred to as the 'interpolated MR signal data set') by using the value of the second MR parameter.

Magnetic resonance imaging apparatus and operating method for the same

Provided is a magnetic resonance imaging (MRI) apparatus. The MRI apparatus includes: a data acquisition unit configured to acquire a first k-space including a first missing line by undersampling an MR signal received from an object at a first time point, acquire a second k-space including a first acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a second time point, and acquire a third k-space including a second acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a third time point; and an image processor configured to interpolate data in the first missing line based on data in the first and second acquired lines.

Magnetic resonance imaging apparatus and method for operating the same

A method of removing distortion by lipids from an MR image includes obtaining an MR image including voxels, obtaining data of the voxels from the obtained MR image, estimating a lipid-related spectrum by using the obtained data, and removing the estimated lipid-related spectrum from the obtained data.

Method and apparatus for removing distortion by lipids from magnetic resonance image

A method obtains main magnetic field information and radio frequency (RF) pulse related information in a magnetic resonance imaging (MRI) system, in which a pulse having a first flip angle and a pulse having a second flip angle are transmitted to a target object at predetermined time intervals. The method includes: obtaining at least one first response signal with respect to the pulse, having the first flip angle, from the target object; obtaining at least one second response signal, with respect to the pulse having the second flip angle, from the target object; and combining the at least one first response signal and the at least one second response signal to obtain the main magnetic field information and the RF pulse related information.

Method and apparatus for obtaining main magnetic field information and radio pulse related information in a magnetic resonance imaging system with different flip angles

A method obtains a magnetic resonance (MR) spectrum of a voxel in a magnetic resonance (MR) image obtained from a magnetic resonance imaging (MRI) apparatus. The method includes configuring a sampling pattern of k-space data; sampling predetermined data from the k-space data based on the configured sampling pattern; and obtaining the MR spectrum of the voxel by using the sampled data.

Method and apparatus for obtaining a magnetic resonance spectrum of a voxel in a magnetic resonance image

An apparatus for reconstructing 3D images by using magnetic resonance imaging (MRI) includes an image acquiring unit configured to acquire a plurality of MR images about a region of interest of an object at different angles, respectively; and an image reconstructing unit configured to reconstruct the 3D image by using the plurality of MR images, wherein the plurality of MR images include information of a slice direction about the region of interest, which is changed depending on the different angles. According to the invention, since the 3D image is reconstructed by using the MR images acquired at different angles, the 3D image may have a better SNR than the method for reconstructing 3D images of the related art.

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Seoul, South Korea

Min-oh Kim