Identify pixel values in Image Service

Hi There,
I was just wondering if there is a way to identify the individual pixel values in a mosaic dataset that has been output as an image service? The image service is then added as a layer in the Flex viewer. I have done this using the Identify widget with the mosaic brought into a map and served as map service but it would be useful to be able to publish the service as image service and retain this function.

Any help gratefully recieved.