https://www.vetnurse.co.uk/f/clinical-discussions/4765/mri-and-ct-anaesthesia In need of advice to prevent patients (dogs n cats) hypoventilating during long MRI scans. Isoflorane/02 is piped to patients through 4 metre long tubes which creates masses of dead space and CO2 build up. Does anyone have these problems ?? and how doen-USTelligent Community 10https://www.vetnurse.co.uk/thread/46482?ContentTypeID=1Sat, 03 Oct 2009 11:11:14 GMT1a0763ec-3885-442c-853e-6cef656dfec5:4c9260e0-24e9-4f20-9f79-576de10b7cffNick Shackleton <p>hey there we either use a circle or a mini lack circuit with extended gas&nbsp;delivery&nbsp;tubing. we have capnography. to be honest we don&#39;t have this prob for the few that we do we IPPV.</p> <p>With regards to CT thou,&nbsp;shouldn&#39;t&nbsp;be in the room during scanning. for CT as its a quick scan process we only sedate our patients.&nbsp;</p><div style="clear:both;"></div>