Patent ID: 11972561
Assignee: CANON U.S.A., INC.
Field: Computer technology (Electrical engineering)
Classification: CPC A  G | IPC G

Claim 17:
18. The method of claim 10, wherein one or more of the following:
(i) the method further comprises, for a predetermined number of frames or images in a row, determining whether a target or an arterial wall is visible;
(ii) the method further comprises, for a predetermined number of frames or images in a row, determining whether a target or an arterial wall is visible, and the predetermined number of frames or images in a row is one or more of the following: three, four, five, and/or six;
(iii) the method further comprises, for a predetermined number of frames or images in a row, determining whether a target or an arterial wall is visible, and in a case where the target or the arterial wall is visible, the method triggers the automatic pullback;
(iv) the counter operates to ensure that blood is cleared enough so the automatic pullback is synchronized with an improved or optimal clearing state;
(v) the counter is increased each time a clearance state is detected; and/or
(vi) the method further comprises, for a predetermined number of frames or images in a row, determining whether a target or an arterial wall is visible, and the method further comprises detecting whether a number of non-overlapping to BIA objects is greater than a predetermined threshold such that it is determined that the target or arterial wall is revealed or visible and such that the blood is flushed to indicate a clearance state, wherein the predetermined threshold is three or more or greater than three.