Access to the supplemental resources for this session is password-protected and restricted to University of Michigan students. If you are a University of Michigan student enrolled in a histology course at the University of Michigan, please click on the following link and use your Kerberos-password for access to download lecture handouts and the other resources.
To optimize performance of ImageScope, you may need to make some adjustments default settings:
Go to the "Tools" menu, then "Options". In the Options window, click on the "Performance" tab and UNCHECK the "Prefetching" option (see example) if it is checked, but leave the "Progressive Rendering" option checked.
The Aperio Imagescope viewer allows for in depth viewing of Histology and Pathology scanned slides. Navigating the slide is relatively easy. The following tutorial will note many of the key navigational controls. The best way to firsthand use virtual images is the Medical Histology webpage. Fot all digital images use the following link: Access complete (so far) UMich digital slide collection
On this webpage, click on the “Histology” folder (see screen shot) to access the slides that will be used in the medical histology course.
A good slide with which to start is number 29, which is a very well prepared cross section from the small intestine. To get to this slide, you’ll have to go through several subfolders, so click on the “Histology” folder, then “Basic Tissues,” and finally “Epithelium and CT.” (hyperlinks to the folders have been provided, but it is useful to get a feel for the file structure since you’ll be accessing these files a lot in the coming year). Once in the Epithelium CT and Muscle” folder, you’ll see all of the virtual slides referenced in the Epithelium, Connective Tissue, and Muscle Tissue sections of the laboratory manual (see screenshot). Clicking on any of the image thumbnails or the blue hyperlinks will open the image in WebViewer. To view slide 29 in ImageScope, click on the “open with ImageScope” link just under the file named “029-1_HISTO_40X.svs”.
If you are using ImageScope for the first time, the default view will be something like what is shown below. The viewing options are explained below and may be changed by checking/unchecking these options in the “View” menu.
This exercise will use one of the images from the virtual microscope slide collection to show you how to take advantage of many of the features of the Aperio ImageScope program, namely using the annotations feature to label regions of interest in digital images. Using the “GoTo” command to go to a region of interest.
In the “Image” menu, click on the “GoTo” command. Enter the coordinates you recorded from above and then click on the “Go To: Center” button. This should bring the blood vessel back into the field of view, and, if you zoom in, you will find that the coordinates you entered above are in the center of the field. As you study these slides, you should note the coordinates of particularly good examples of cells or tissues so that you can go back to them easily for review.
Using annotations in ImageScope. One of the most useful features of the ImageScope program is the ability to annotate images. It is important to note that the original image is not altered in any way. Instead, the annotations are kept in a small file that stores information regarding the pixel coordinates and magnification of an annotated region and simply “overlays” the annotations on the image. To use the annotations feature, you’ll need to download an annotation file. Right Click on the link below and save (right-click "Save As") the file to your desktop: Download this annotation file
Then go to the “View” menu and open the “Annotations Window” (see screenshot).
Once the annotations window is open, click on “Import Annotations From File” button (see screenshot), browse to your desktop, and select “jvelkeyEpithSlide29”.
Clicking on any of the annotations will take you to the annotated region of the slide, and illustrates the various type of annotation tools that may be used:
• “Pen” tool (illustrated in annotation #1) • “Negative pen” tool (annotation #2) -- not that much different except that it has a dotted line instead of a solid line. • “Ruler” tool (#3): click and drag to determine the distance between any two points on the image • “Rectangle” tool (#4) • “Ellipse” tool (#5) • “Arrow” tool (#6 and 7) Note that the color of the outline may be changed (for H&E, bright green is a good contrasting color). Annotations 6 and 7 are right next to each other, so it can be hard to tell one from the other. When each is clicked, you should notice that the image is re-centered to place that annotation in the center. In addition, the active annotation will have a black line (either solid or dotted) in the center of the colored line. Click on each of the annotations to see what each looks like. It is possible to generate several layers of annotations, which is useful if you use a slide for more than one lab exercise. For example, slide 29 is used in the epithelium, connective tissues, muscle, nerve, and digestive system sections of the lab manual, so you could make one annotation file for slide 29 and generate new layers corresponding to each lab exercise. In the slide 29 annotation window, there are two layers: layer one is labeled “slide 29 general histology;” layer two is “slide 29 muscle lab” and contains annotations relevant to that lab session.
Now, you’re going to generate some of your own annotations.
In the annotations window, click on the “Delete All Layers” button. Click “Yes” when asked if you are sure you want to delete all layers. To make an annotation, find a region of interest and select an annotation tool from the toolbar (see screenshot).
After the annotation is made, you can enter a brief description by clicking on the blue highlighted “Description” box. If the annotation is not placed exactly to your liking you CANNOT move it. Instead you’ll have to delete it by clicking on the “Delete Region” button and start over by the re-selecting the annotation tool.
Drawing on your new-found expertise in the histology of the intestine, make the following annotations:
To save your annotation file at any point, click on the “Export Annotations to File” button. To keep track of these files, it will be helpful for you to include your uniqname in the file name (e.g. “jvelkeySlide29”). If you need help remembering what some of the structures above look like, save what you’ve generated so far and click on the “Delete all Layers” button. Then, import the “jvelkeyEpithSlide29” annotations file to review the structures. When you’re ready to get back to your own annotations, just “Delete all Layers” again and import your own annotation file.
Unfortunately, there is currently not a way to annotate slides viewed with the WebScope. However, you can at least create "Bookmarks" to regions of interest on a slide that you can use to quickly open a slide and take you back to a particular region.
A less convoluted way is to just RIGHT-click on the URL and you'll be given the option to bookmark the link directly from that page. Alternatively, you could type some descriptive text in a Word document and then create a hyperlink to that URL: