Demonstration of "Blink Comparison" Method for Finding New or Changing Moles


Screen shot of typical body photograph. The image captures a fairly large portion of the body. This simplifies the photography process and requires very little time. Mole details are observed by zooming in on the image. Click on "Show Zoom" and compare with the image below taken about one year later (Hint: there is a new mole and a mole that has significantly enlarged during the year). After you try to find the changes use the software assisted technique demonstrated below.

melanoma screening

This image shows detail from the left upper shoulder of a follow-up image obtained about one year after the base line shown above.

The software assisted technique for finding new or changing moles involves the alignment  of the current body image with that of a previous baseline image. The images are then displayed in alternating fashion onscreen (click on "Demo Image Comparison" button below to visualize). A new mole that has appeared during the interval time literally blinks during the alternating display. Moles that have enlarged appear to pulsate relative to other moles. This makes the detection of the mole obvious and easy to accomplish with a little practice.

skin cancer screening

Note: These images are for demonstration of principle only. The speed of image blinking and image quality will vary with your browser and computer speed. The actual DermAlert® software displays higher resolution color images with control of the blink speed, magnification, image contrast and brightness.