Thought I'd dig this up again. I'm currently travelling through Asia and had all my bags scanned through a bigger machine when going through customs in Kota Kinabalu. Are these machines bigger versions of the hand luggage machines, or are they more akin to the checked in machines?
If the machine was big it is probably what you are calling a "checked in machine". If the equipment said "Invision" on the side, then it is a CT (or two-phase X-ray and CT if they have newer equipment).