US 12,268,558 B2
Electronic endoscope system
Masayuki Hagiwara, Tokyo (JP)
Assigned to HOYA CORPORATION, Tokyo (JP)
Appl. No. 17/801,622
Filed by HOYA CORPORATION, Tokyo (JP)
PCT Filed Jul. 19, 2021, PCT No. PCT/JP2021/027018
§ 371(c)(1), (2) Date Aug. 23, 2022,
PCT Pub. No. WO2022/064826, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 2020-159687 (JP), filed on Sep. 24, 2020.
Prior Publication US 2023/0080349 A1, Mar. 16, 2023
Int. Cl. A61B 8/08 (2006.01); A61B 8/00 (2006.01); A61B 8/12 (2006.01); A61B 8/14 (2006.01)
CPC A61B 8/5269 (2013.01) [A61B 8/12 (2013.01); A61B 8/14 (2013.01); A61B 8/463 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An electronic endoscope system configured to acquire an ultrasonic image, the electronic endoscope system comprising:
an electronic endoscope having, at a distal tip thereof, an ultrasonic probe configured to repeatedly apply ultrasonic waves to biological tissue to sequentially obtain echo signals; and
an ultrasonic image processor configured to
process the echo signals outputted from the ultrasonic probe to generate an ultrasonic image,
detect a noise component which is contained in a first echo signal among the echo signals and which is periodically generated at or above a preset threshold level,
generate a noise inhibition component which, by being added to a second echo signal outputted after the first echo signal, inhibits generation of the noise component in the second echo signal, and adds the noise inhibition component to the second echo signal, and
adjust at least any one of an amplitude, a frequency, and a phase of the noise inhibition component so that the level of the noise component is reduced in the second echo signal to which the noise inhibition component is added.