HP, that is not all that uncommon, in fact there are companies making open scanners now to avoid exactly your reaction. A company up here that advertises is Open MRI of new england. I did a quick search on open CAT scan and found this web page among many others. Ask your DR about it citing your clausterphobia. I'm sure they can find something to accommodate you. Might cost a little more, so you may need to clear it with your insurance. Hope that helps.
