Place Images is a free and simple to use InDesign script that will help you replace all text frames containing file names of images with actual images.
A file name should be delimited with @ signs e.g. @picture.tif@. A text frame may contain an additional text, for example comments, but no more than 100 characters.
This is a preventive measure, as all text will disappear after placing an image so that not to destroy main part of the text.
Detailed usage instructions for the Place Images InDesign script are available HERE.