US 12,484,803 B2
Image processing apparatus, image processing method, and magnetic resonance imaging apparatus
Matthew Nielsen, Yokohama (JP); and Mitsuhiro Bekku, Utsunomiya (JP)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Tochigi (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Tochigi (JP)
Filed on Sep. 5, 2023, as Appl. No. 18/460,740.
Claims priority of application No. 2022-140932 (JP), filed on Sep. 5, 2022.
Prior Publication US 2024/0074671 A1, Mar. 7, 2024
Int. Cl. A61B 5/055 (2006.01); G06T 5/50 (2006.01); G06T 7/00 (2017.01)
CPC A61B 5/055 (2013.01) [G06T 5/50 (2013.01); G06T 7/0012 (2013.01); G06T 2207/20224 (2013.01); G06T 2207/30016 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An image processing apparatus, comprising:
processing circuitry configured to
acquire a magnetic resonance image; and
determine, with respect to each pixel of pixels included in the magnetic resonance image, a shift amount from a position of the pixel to a position where ringing artifacts will be reduced, and perform a ringing correction to correct the ringing artifacts occurring in the magnetic resonance image based on the determined shift amounts, wherein
the processing circuitry is further configured to
estimate, with respect to each pixel of the pixels included in the magnetic resonance image, a local amplitude of the ringing artifacts occurring in the magnetic resonance image, and
perform the ringing correction on the magnetic resonance image based on a result of estimating the local amplitudes of the ringing artifacts, while determining the shift amount of each pixel of the pixels included in the magnetic resonance image so as to be approximately continuous with the shift amounts of adjacently positioned pixels, sequentially in descending order starting with pixels having a higher local amplitude of the ringing artifacts.