Handheld optical imaging devices and methods
Handheld optical imaging devices and methods are disclosed herein. In an embodiment, an optical coherence tomography (OCT) system includes an OCT probe that is configured as a hand-held probe for imaging an eye of a patient, the OCT probe includes: an OCT optical system configured to direct a source OCT signal to the eye and configured to capture OCT scan signal returning from the eye; and an on-probe display carried by a handle, wherein the on-probe display is configured to display imaging data of the eye of a patient to an operator during OCT imaging.
1. An optical coherence tomography (OCT) system, comprising an OCT probe that is configured as a hand-held probe for imaging an eye of a patient, the OCT probe comprising:
an OCT optical system configured to direct a source OCT signal to the eye and configured to capture OCT scan signal returning from the eye; and
an on-probe display carried by a handle, wherein the on-probe display is configured to display imaging data of the eye of a patient to an operator during OCT imaging,
wherein the imaging data of the eye that is displayed on the on-probe display comprise two B-scan images, wherein the on-probe display is configured to display an en-face image within an en-face image display area of the on-probe display, and wherein the en-face image is an image of an average intensity projection of the eye of the patient.
2. The OCT system of claim 1 , wherein the two B-scan images are obtained at two mutually orthogonal planes.
3. The OCT system of claim 1 , further comprising an iris viewer integrated into the OCT probe, wherein the iris viewer is configured to assist the operator to target the patient's eye during imaging, and wherein the iris viewer includes:
a source of illumination configured to be directed towards an iris of the patient's eye; and
a detector configured to receive light reflected from the patient's eye,
wherein the on-probe display is configured to display an iris image within an iris display area of the on-probe display.
4. The OCT system of claim 1 , wherein the en-face image is an image of an average intensity projection of the eye of the patient.
5. The OCT system of claim 1 , wherein the on-probe display is configured to display a fixation image within a fixation image display area of the on-probe display.
6. The OCT system of claim 1 , wherein the on-probe display is a monolithic display comprising zones for different images.
7. The OCT system of claim 1 , further comprising a computer configured to process the OCT data to provide the OCT imaging data, wherein the computer is physically separate from, but in electronic communication with the OCT probe.
8. The OCT system of claim 1 , further comprising an operating switch attached to the OCT probe, wherein the operating switch is configured to control image acquisition of the OCT system.
9. The OCT system of claim 1 , wherein the OCT probe comprises an electrically tunable lens configured to automatically control a focus of the source OCT signal focus during OCT imaging.
10. The OCT system of claim 1 , wherein the OCT probe comprises curved mirrors configured to obtain wide field-of-view images.
11. An optical coherence tomography (OCT) system, comprising an OCT probe that is configured as a hand-held probe for imaging an eye of a patient, the OCT probe comprising:
an OCT optical system configured to direct a source OCT signal to the eye and configured to capture OCT scan signal returning from the eye;
an on-probe display carried by a handle, wherein the on-probe display is configured to display imaging data of the eye of a patient to an operator during OCT imaging;
a robotic motion-tracking mechanism configured to stabilize OCT imaging; and
a 3D imaging sensor configured to capture head motion of the patient.
12. A method of generating an optical coherence tomography (OCT) image of an eye of a patient, comprising:
directing an OCT probing beam to the eye by a hand-held OCT probe of an OCT system;
capturing OCT scan signal returning from the eye;
generating OCT and OCTA images from the OCT scan signal by a computer configured to process the OCT signal, wherein the computer is physically separate from, but in electronic communication with the OCT probe;
displaying OCT images on an on-probe display carried by a handle of the OCT; and
guiding the hand-held OCT probe by the OCT images displayed on the on-probe display,
wherein the OCT images on the on-probe display comprise at least two orthogonal B-scan images, and wherein the hand-held probe further comprises an iris viewer integrated into the OCT probe,
the method further comprising:
capturing an iris image of the eye of the patient;
displaying the iris image within an iris display area of the on-probe display; and
displaying an en-face image within an en-face image display area of the on-probe display, wherein the en-face image is an image of a retina of the patient or an average intensity projection of the eye of the patient.
13. The method of claim 12 , further comprising:
displaying a fixation image within a fixation image display area of the on-probe display.
14. The method of claim 12 , wherein the patient is an infant.
15. A method of generating an optical coherence tomography (OCT) image of an eye of a patient, comprising:
directing an OCT probing beam to the eye by a hand-held OCT probe of an OCT system;
capturing OCT scan signal returning from the eye;
generating OCT and OCTA images from the OCT scan signal by a computer configured to process the OCT signal, wherein the computer is physically separate from, but in electronic communication with the OCT probe;
displaying OCT images on an on-probe display carried by a handle of the OCT;
guiding the hand-held OCT probe by the OCT images displayed on the on-probe display;
capturing head motion of the patient by a 3D imaging sensor; and
based on the head motion, stabilizing the OCT probe by a robotic motion-tracking mechanism that carries the OCT probe.