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The Fusion of Imaging Technologies INTRODUCING. Spectralis is more than resolution … Time Domain OCT SPECTRALIS.

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Presentation on theme: "The Fusion of Imaging Technologies INTRODUCING. Spectralis is more than resolution … Time Domain OCT SPECTRALIS."— Presentation transcript:

1 The Fusion of Imaging Technologies INTRODUCING

2 Spectralis is more than resolution … Time Domain OCT SPECTRALIS

3 Spectralis is more than fast … 40 kHz = 100x Faster than time domain OCT

4 Spectralis is more then SD-OCT…  Dual laser scanning system for simultaneous imaging:  Confocal Scanning Laser Ophthalmoscope (cSLO) with up to 5 imaging modes: IR, FA, ICGA, AF, Red-free  Spectral Domain Optical Coherence Tomograph (SD-OCT)  Eye tracking:  cSLO recognizes eye movements and guides SD-OCT scanner to follow  Allows repeat scans at exact same location

5 Spectralis is more than one view … ICGAPolypoidal Lesion

6 Spectralis is more than 3D …

7 Spectralis is knowing location Cross section scanReference scan Eye Movement The reference image tracks eye movement, and the cross section is moved to match EYE TRACKING

8 Spectralis Tracks Change Over Time Exam 1Exam 2 Real-time alignment Cross section scanned at same location Real-time alignment Cross section scanReference scan EYE TRACKING Accurate change measurement

9 Heidelberg Noise Reduction Technology  Multiple images are captured at the same location  “Noise” is identified as points not common to the set of images  The noise is filtered from the final image Image 1Image 2 Heidelberg Noise Reduction Technology produces high resolution, high contrast images with less “speckle”.

10 Simultaneous Imaging with Eye Tracking

11 What’s wrong with the old OCT?  Hidden artifact – structure may be different than presented  Not simultaneous – B-Scan may be in different location than reference image  No eye tracking – Not good for LASIK, not good for diagnostics  (S)low resolution – Layers hard to identify for computer algorithms

12 Old OCT Does Not Stop Eye Movement  While Time Domain OCT scans, the eye keeps moving  The black line is the camera’s perspective  The white line is the actual scan path “Tracking the Optic Nervehead in OCT Video…” Koozekanani, et al, 2003 © 2003 IEEE

13 Old OCT Does Not Register Images  As the eye moves, so does the scan location  Software algorithms reconstruct the data  Software assumes the lines are straight and intersecting

14 Increasing Reports of OCT Artifact Study% Artifact/Error UCSD: Bartsch (2004)42% Duke: Ray (2005)43% USC: Sadda (2006)92% Bartsch et al. Optical Coherence Tomography: Interpretation Artifacts and New Algorithm. Proc. of SPIE ; Ray et al. Evaluation of image artifact produced by optical coherence tomography of retinal pathology. Am J Ophthalmol Jan;139(1): Sadda et al. Errors in retinal thickness measurements obtained by optical coherence tomography. Ophthalmology Feb;113(2):

15 Eye Tracking Stops 3D Motion Artifact Artificial ripples due to eye movements Without Eye Tracker True anatomic structure With Eye Tracker

16 Spectralis Advantages  Eye Tracking – Every B-scan is simultaneously locked to a reference image  Up to 6 modes – Multiple perspectives of the anatomy from multiple wavelengths  40 kHz scanning – High speed helps overcome eye movement artifact and increases patient comfort  TruTrack ™ – Image alignment compares reference location at baseline to follow-up  Heidelberg Noise Reduction Technology – Overcomes the limits of “resolution”

17 AF – Occult CNV

18 IR – Central Serous Chorioretinopathy

19 ICGA – RAP

20 ICGA – CNV with Choroidal Hemangioma

21 AF – Occult CNV

22 AF – Diabetic Retinopathy

23 6 Billing Codes (example for United States)  Scanning Diagnostic Imaging  Fluorescein Angiography  ICG Angiography  Red Free Fundus Photography  External Ocular Photography  Internal Eye Photography (Iris Angiography)

24 Select From Three Versions 6 modes SD-OCT Infrared Autofluorescence Fluorescein Angiography ICG Angiography Red Free Photography 2 modes SD-OCT Infrared modes - Infrared Autofluorescence Fluorescein Angiography ICG Angiography Red Free Photography HEYEX Database

25 HEYEX Network Solution IRFAIROCT HEYEX Registration Link

26 Heidelberg Engineering Imaging Suite IR OCT HEYEX FAFundus Registation Link OCT

27 Red FreeAutofluorescence Infrared ICG Angiography Fluorescein Angiography The Fusion of Imaging Technologies


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