Loading patent…
AssigneeSamsung Electronics Co., Ltd.
InventorsArtem Sergeevich Migukin, Dmitry Alexandrovich Korobchenko, Mikhail Yurievich Sirotenko, Kirill Arthurovich Gavrilyuk, Praveen Gulaka, Sang-cheon Choi, Michail Nikolaevich Rychagov, Yang Lim Choi
Estimating the term…
Provided is a magnetic resonance imaging (MRI) apparatus including an acquisition unit configured to acquire an undersampled spectrum in a k-space and a reconstruction unit configured to generate a target image based on the undersampled spectrum, wherein the reconstruction unit includes: a first sub-reconstruction unit configured to perform initial reconstruction on data corresponding to unsampled positions in the k-space by using a Split Bregman algorithm or approximate sparse coding; a second sub-reconstruction unit configured to decompose the initially reconstructed spectrum in the k-space into multiple frequency bands to thereby generate a plurality of individual spectra and perform dictionary learning reconstruction on images respectively corresponding to the decomposed multiple frequency bands by alternating sparse approximation and reconstructing of measured frequencies; and an image generator configured to generate a target image by merging together the reconstructed images respectively corresponding to the multiple frequency bands.
A magnetic resonance imaging (MRI) apparatus comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Image enhancement or correction, e.g. subtraction or averaging techniques , e.g. improvement of signal-to-noise ratio and resolution: by reduction…
Inspection of images, e.g. flaw detection: biomedical image inspection
Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves:…
Characterised by using transforms: using Fourier transforms
About 11 years 11 months of term left · ends 10 Oct 2038 (estimated)
This application is a National stage entry of International Application No. PCT/KR2015/004446, filed on Apr. 30, 2015, which claims priority from Russian Patent Application No. 2014117696, filed on Apr. 30, 2014 in the Russian Patent Office, and Korean Patent Application No. 10-2014-0195373, filed on Dec. 31, 2014 in the Korean Intellectual Property Office. The disclosures of each of the applications are herein incorporated by reference in their entirety.
The present invention relates to medical imaging, and more particularly, to a method and system for reconstructing a target image from undersampled data. The present invention may be applied to MRI scanners for accelerating image acquisition and be implemented as software or hardware components of medical equipment.
Magnetic resonance imaging (MRI) is a noninvasive and nonionizing imaging technique, which is widely utilized in diagnosis due to its excellent ability to visualize both an anatomical structure and a physiological function. However, MRI is a relatively slow imaging modality since pieces of used data, i.e., samples of the spatial Fourier transform of an object in the so-called k-space, are acquired sequentially over time.
FIG. 1 is a block diagram of a magnetic resonance imaging (MRI) apparatus according to an embodiment.
FIG. 2 is a flowchart of a method of reconstructing an MR image at a high speed, according to an embodiment.
FIG. 3 is a detailed flowchart for explaining initialization based on a Split Bregman method, according to an embodiment.
The attached drawings for illustrating exemplary embodiments of the present disclosure are referred to in order to gain a sufficient understanding of the present disclosure, the merits thereof, and the objectives accomplished by the implementation of the present disclosure. In this regard, the present embodiments may have different forms and should not be construed as being limited to the descriptions set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the present embodiments to one of ordinary skill in the art, and the present invention will only be defined by the appended claims.
Hereinafter, the terms used in the specification will be briefly described, and then the present disclosure will be described in detail.
The terms used in this specification are those general terms currently widely used in the art in consideration of functions regarding the present disclosure, but the terms may vary according to the intention of those of ordinary skill in the art, precedents, or new technology in the art. Also, some terms may be arbitrarily selected by the applicant, and in this case, the meaning of the selected terms will be described in detail in the detailed description of the present specification. Thus, the terms used herein have to be defined based on the meaning of the terms together with the description throughout the specification.