Patent ID: 11857257
Assignee: OPTOS PLC
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 17:
18. An apparatus for processing functional OCT image data, which has been acquired by an OCT imaging device scanning a retina of a subject while the retina is being repeatedly stimulated by a light stimulus, to generate image data defining an image that provides an indication of a response of the retina to the light stimulus, the apparatus comprising:
a receiver module configured to receive, as the functional OCT image data:
OCT image data that has been generated by the OCT imaging device repeatedly scanning a scanned region of the retina over a time period; and
stimulus data defining a sequence of stimulus indicators each being indicative of a stimulation of the retina by the light stimulus in a respective time interval of a sequence of time intervals that spans the time period;

a correlation calculator module configured to calculate a rolling window correlation between a sequence of B-scans that is based on the OCT image data and stimulus indicators in the sequence of stimulus indicators; and
an image data generator module configured to use the calculated rolling window correlation to generate image data defining an image which indicates at least one of:
the response of the scanned region of the retina to the light stimulus as a function of time;
one or more properties of a curve defining the response of the scanned region R of the retina to the light stimulus as a function of time; and
a spatial variation, in the scanned region of the retina, of one or more properties of the curve defining the response of the scanned region of the retina to the light stimulus as a function of time, the spatial variation being overlaid on an en-face representation of at least a portion the retina which includes the scanned region.