Error processing DICOM file - There is no DICOM dictionary present

[ImagoGen]

I am new to Photoshop CC and would like to use it to open images that are stored in DICOM format (e.g. .dcm file) on my Mac. When I try to open in Photoshop CC (am currently at 20.0.2) I simply get the error "Error processing DICOM file:  There is no DICOM dictionary present" and the image is not opened.  I searched the help online support and forums and only found basic help about working with and saving files as DICOM images which all assumed that you could actually open the files and got to the "DICOM File Import dialog box" which I don't get that far.   I know the files are valid DICOM Files because I can open them in other medical imaging viewer software and see the image. I tried to contact support directly through the chat and it was pretty much useless - after 15 minutes they pointed me to a FAQ on saving and exporting files as various types. (Incidentally I did learn that I CAN open a .jpg and then choose save as and save the image as a .dcm and then I can modify the aspects of the DICOM metadata etc.   I tried uninstalling Photoshop CC and reinstalling but that didn't help. Can anyone help me figure out how to get this dictionary? Is there some plug-in that I need to install or something? Thanks in advance for any suggestions I really was hoping to use Photoshop to work with these files as it is clearly advertised that I should be able to. 

[c.pfaffenbichler]

I am not in the medical field myself but maybe if you provide the images someone can test them and provide more pertinent advice.

Otherwise you might want to post over at

Photoshop Family Customer Community

where an Adobe employee might happen upon your post.