US 12,133,684 B2
Ophthalmic imaging apparatus, controlling method of the same, and recording medium
Ryoichi Hirose, Tokyo (JP); Toshihiro Mino, Warabi (JP); and Tatsuo Yamaguchi, Warabi (JP)
Assigned to TOPCON CORPORATION, Tokyo (JP)
Filed by Topcon Corporation, Tokyo (JP)
Filed on Mar. 25, 2021, as Appl. No. 17/211,932.
Application 17/211,932 is a continuation of application No. PCT/JP2019/031209, filed on Aug. 7, 2019.
Claims priority of application No. 2018-184102 (JP), filed on Sep. 28, 2018.
Prior Publication US 2021/0204809 A1, Jul. 8, 2021
Int. Cl. A61B 3/10 (2006.01); A61B 3/12 (2006.01)
CPC A61B 3/102 (2013.01) [A61B 3/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An ophthalmic imaging apparatus that performs motion contrast imaging by applying optical coherence tomography (OCT) scanning to an eye, comprising:
a data acquiring unit including an optical scanner configured to acquire a plurality of pieces of time-course data respectively corresponding to a plurality of scan points of an imaging area by repetitively applying an A-scan to each of the plurality of scan points, the A-scan being a one dimensional scan along a depth direction;
processing circuitry configured as an image constructing unit to construct a motion contrast image from the plurality of pieces of time-course data acquired by the data acquiring unit; and
the processing circuitry is further configured as a controller to control the data acquiring unit such that data acquisition time intervals of first time-course data corresponding to a first scan point of the plurality of scan points and data acquisition time intervals of second time-course data corresponding to a second scan point become equal to each other, wherein the first scan point of the plurality of scan points is in a different position of the imaging area than the second scan point of the plurality of scan points,
the ophthalmic imaging apparatus further comprising:
a second setting processor configured to set a first disposition and a second disposition, the first disposition being a disposition of scan points on a first route that is a moving route of an A-scan application position in a direction perpendicular to the depth direction between an A-scan application to the first scan point and a next A-scan application to the first scan point, and the second disposition being a disposition of scan points on a second route that is a moving route of an A-scan application position in a direction perpendicular to the depth direction between an A-scan application to the second scan point and a next A-scan application to the second scan point, wherein
the controller controls the data acquiring unit based on the first disposition and the second disposition set by the second setting processor,
the second setting processor sets scan point intervals of the first route and scan point intervals of the second route different from each other, and
the second setting processor sets a first route length that is a length of the first route and a second route length that is a length of the second route different from each other.