Modality is used by medical students and teachers so that they can access various medical information directly to thier iPhone. It might be that the medical student needs to access specific information about the human body. Modality allows them to zoom into details of a body part for much clearer details.
MIMVista on the other hand is used by doctors who need to access MRI scans and video when the are out and about outside of the office or hospital. The doctor can even manipulate the images on the iPhone using the touch sensitive screen.
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