US 12,094,037 B2
Medical image processing apparatus and medical image processing method
Hisashi Takahashi, Kashiwa (JP); Taiga Goto, Kashiwa (JP); and Kana Tanaka, Kashiwa (JP)
Assigned to FUJIFILM Healthcare Corporation, Chiba (JP)
Filed by FUJIFILM Healthcare Corporation, Kashiwa (JP)
Filed on Dec. 22, 2021, as Appl. No. 17/645,473.
Claims priority of application No. 2021-015118 (JP), filed on Feb. 2, 2021.
Prior Publication US 2022/0245871 A1, Aug. 4, 2022
Int. Cl. G06V 10/00 (2022.01); A61B 6/00 (2006.01); A61B 6/03 (2006.01); G06T 5/70 (2024.01); G06T 7/00 (2017.01); G06T 11/00 (2006.01); G06V 10/25 (2022.01); G16H 30/40 (2018.01)
CPC G06T 11/008 (2013.01) [A61B 6/032 (2013.01); A61B 6/5235 (2013.01); A61B 6/5258 (2013.01); G06T 5/70 (2024.01); G06T 7/0012 (2013.01); G06V 10/25 (2022.01); G16H 30/40 (2018.01); G06T 2207/10072 (2013.01); G06T 2207/30004 (2013.01); G06V 2201/03 (2022.01)] 17 Claims
OG exemplary drawing
 
1. A medical image processing apparatus comprising:
a difference image generating unit that divides projection data obtained by applying radiation to an examinee to create a difference image between tomographic images reconstructed for every divided piece of projection data;
a local variance computing unit that computes local variance in the difference image; and
a noise estimation unit that corrects the local variance using a correction function, the correction function having been found in advance, to estimate noise intensity of a tomographic image of the examinee,
wherein the correction function includes system noise.