Imaging/Image analysis

1. How can I accentuate the definition of the vitreo-retinal interface?
2. How can I adjust the space between B-scan slices in a volume scan?
3. How can I change the size of a volume scan?
4. Is it possible to hand draw an area and get the area calculation/measurement ?
5. How do I turn off the Eye Tracking ART™ (Automatic Real-Time) software on the SPECTRALIS®?
6. Is there wide field imaging on the 2 mode version of the Spectralis?
7. How do you print multiple OCT images from a volume scan?
8. Can iris angiographies be done with the HRA C/2?
9. Can I perform iris angiographies with the HRA?
10. How do I print a combined RNFL circle scan and posterior pole scan on the same printout?
11. How do I print a posterior pole OU report?
12. What is FoDi Technology?
13. How do I verify the software versions on my instrument or viewing station?
14. Do you offer standalone viewing software for referring physicians to view patient images?

If your questions is not listed above, please ask using the form.

1. How can I accentuate the definition of the vitreo-retinal interface?

   To accentuate the definition of the vitreo-retinal interface, try adjusting the contrast on the image. To do this, open the image, then click the half white/half black circular button at the top left hand side of the screen.

   This opens the contrast adjustment window. In this window, slide the OCT contrast bar to adjust the image.

2. How can I adjust the space between B-scan slices in a volume scan?

   To increase (or decrease) the number of B-scans and thereby decrease/increase the space between scans in any volume scan, enter the acquisition mode, select the scan pattern and then roll the mouse wheel OR press [Shift] + the up (or down) arrow key.

   You can also increase (or decrease) the height of the volume scan by using the arrow keys without the shift key.

3. How can I change the size of a volume scan?

   To increase (or decrease) the volume scan height or width, select “volume” on the touch panel when in OCT mode then press the arrow keys on the keyboard.

   You can also increase (or decrease) the B-scan density in any volume scan by rolling the mouse wheel OR by pressing [Shift] + the up (or down) arrow key.

4. Is it possible to hand draw an area and get the area calculation/measurement ?

   Yes, the area measurement can be displayed for a free hand drawing on an HRA image. Select the overlay that is a circle symbol (region overlay) and draw your region making sure that the end point meets at the small blue square that is created at your starting point. Right-mouse-click on the small blue square and choose “overlay properties” from the context menu. Check the box next to “Display area size in mm²” and select the “OK” button at the bottom. Note: this feature is only available on a single HRA fundus image or on simultaneously-acquired fundus images.

5. How do I turn off the Eye Tracking ART™ (Automatic Real-Time) software on the SPECTRALIS®?

   The ART Eye Tracking feature can only be turned off in volume scans.

   To turn off the tracking software:
   1. In the acquisition mode, press these touch panel buttons in sequence: [OCT] then [IR+OCT] then [Volume]
   2. With the mouse, single-click the [ART] button (bottom right-hand corner of the acquisition window), so the button is depressed.
   3. When the OCT image is correctly oriented in the acquisition window, press the touch panel [Acquire] button.

   Each saved image is tagged in the bottom, right-hand corner with image information including the ART settings for that image. If "ART" is in the tag, the ART Eye Tracking software was active for that image. The "ART" tag will be followed by a number in parenthesis which indicates the ART setting (how many B-scans were averaged). If the image does not include the "ART" tag, the tracking software was not activated and no B-scans were averaged.

   To view the detailed image information:

   • Open an OCT image and select "image" at the top of the screen
   • From the dropdown menu, select "Image information"
   • The "ART Mode" settings will be noted in the "OCT Image" section

6. Is there wide field imaging on the 2 mode version of the Spectralis?

   Yes. The 55° lens and the Staurenghi lens (150°) can be used with any of the Spectralis units. The 2-mode version also has the Automatic Real Time (ART) software that allows you to paint the retina on the screen in real time. Because of the movable scan head, the Spectralis allows you to create a quick montage out to 100° with no post-processing.

7. How do you print multiple OCT images from a volume scan?

   To print multiple OCT images from a volume scan, begin by right-clicking on the volume icon and selecting "expand." Double left-click to open one of the "expanded" images. Use the right and left arrow keys on the keyboard to skip to each image in the series and press the down arrow key to put an individual image in the Lightbox. Close the expanded image and highlight the images in the Lightbox. Right-click on one of the highlighted images and select "print" from the context menu. Select the option “16 images per page”. Select “print”.

8. Can iris angiographies be done with the HRA C/2?

   Yes,but it will take longer for the dye to reach the iris than it takes to get to the retina.The fluorescense will be much less and will wash out in 2 to 4 minutes.Use higher magnification options.

9. Can I perform iris angiographies with the HRA?

   Yes, iris angiographies can be performed with the HRA. However, it takes longer for the dye to reach the iris than to the retina. Also, the fluorescence will be much less and will wash out in 2 to 4 minutes. Higher magnification options are recommended.

10. How do I print a combined RNFL circle scan and posterior pole scan on the same printout?

    a. Open a patient file and select the “Image Window” view.
    b. Drag the desired RNFL circle scan and the posterior pole scan from the same eye down into the lightbox area. c. Select both images by holding down the Ctrl key on the keyboard and left-clicking on both images.
    d. Right click on one of the highlighted images and select “Print” from the dropdown menu.
    e. Select “RNFL & Asymmetry Analysis Single Exam Report” from the “Reports” section of the “Print Spectralis Report” pop-up window.
    f. Click on the “Print” button and you will print the adjacent report. a. Open a patient file and select the “Image Window” view.

11. How do I print a posterior pole OU report?

    a. Open a patient file and select the “Image Window” view.
    b. Drag the desired Posterior Pole scan from each eye down into the lightbox area. c. Select both images by holding down the Ctrl key on the keyboard and left-clicking on each image.
    d. Right click on one of the highlighted images and select “Print” from the dropdown menu.
    e. Select “Asymmetry Analysis Single Exam Report OU” from the “Reports” section of the “Print Spectralis Report” pop-up window.
    f. Click on the “Print” button and you will print the adjacent report.

12. What is FoDi Technology?

    FoDi™ (fovea-to-disc) alignment technology is the exclusive Heidelberg Engineering method for automatically tracking and anatomically aligning circle scans. Using the precision of TruTrack™, FoDi automatically aligns the start/stop point of the circle scans in a series and in the normative database. FoDi alignment technology virtually eliminates measurement errors due to patient head and eye movement during scanning and improves the accuracy and reproducibility of RNFL measurements.

    Learn more about FoDi technology

13. How do I verify the software versions on my instrument or viewing station?

    In the main database window of the Heidelberg Eye Explorer, click on the “Help” dropdown, then select “About”. The versions of all modules will be listed there.

    

14. Do you offer standalone viewing software for referring physicians to view patient images?

    Our “Second Site License” software allows referring physicians to review patient images and perform their own analyses. The imaging center can give a patient their images on a CD, which can then be brought back to the referring physician to be imported for review. Alternatively, basic images and reports can be exported and shared as JPEG files.