[NTG-context] Finding the position of an image on the page.

Hello list, Can I find the position of an image on the page after I have placed the image with \externalfigure? For example, the top, left corner of the image might be 50 mm in from left side of page and 120 mm down from the top of the page. I know I can use \getfiguredimensions to find information about the placed image, but it does not give me the position of the image. Thank you Peter Hopcroft