User interface for efficiently displaying relevant OCT imaging data
An OCT imaging system user interface is disclosed for efficiently providing relevant image displays to the user. These displays are used during image acquisition to align patients and verify acquisition image quality. During image analysis, these displays indicate positional relationships between displayed data images, automatically display suspicious analysis, automatically display diagnostic data, simultaneously display similar data from multiple visits, improve access to archived data, and provide other improvements for efficient data presentation of relevant information.
1. A method of automatically aligning a depth range for obtaining a volume cube scan of a retina of an eye using an optical coherence tomography (OCT) system, said method comprising:
acquiring two or more B-scans using the OCT system at a first set of system alignment conditions;
performing image processing on the two or more B-scans to determine a location where the retina would appear in the volume cube scan if the volume cube scan was acquired at the first set of system alignment conditions;
adjusting the system alignment conditions to optimize placement of the retina within the scan volume;
acquiring an OCT volume cube scan at the optimized system alignment conditions; and
storing or displaying the OCT volume cube scan or storing or displaying a further analysis thereof.
2. The method as recited in claim 1 , wherein the two or B-scans comprise central horizontal and central vertical B-scans.
3. The method as recited in claim 1 , wherein the image processing step includes locating a fovea in the B-scans.
4. The method as recited in claim 1 , wherein the two or more B-scans comprise a central horizontal B-scan, a central vertical B-scan, and either two additional horizontal B-scans or two additional vertical B-scans.
5. The method as recited in claim 1 , wherein the two or more B-scans are obtained from five regions of the volume cube, the first region being near a center of a depth projection of the volume cube and the four other regions being near edges of the volume cube formed by neighboring cube side walls; and wherein the adjusting step insures that an OCT image of the first region includes a point on the retina farthest from the OCT system and OCT images of the four other regions include four corner points of the retina closest to the OCT system.
6. The method as recited in claim 1 , further comprising:
before acquiring the OCT volume cube, changing a depth location at which the OCT volume cube will be taken;
acquiring OCT scan data from the changed depth location;
analyzing the two or more B-scans at a first set of system conditions and the OCT scan data from the changed depth location to discriminate between a real image of the retina and a mirror image of the retina.
7. The method as recited in claim 1 , wherein the adjusting step involves moving a fixation target in the OCT system to change a location of the eye in the scan.
8. The method as recited in claim 1 , further comprising acquiring one or more high definition B-scans at the optimized system alignment conditions.