Duke-UNC Brain Imaging and Analysis Center
BIAC Forums | Profile | Register | Active Topics | Members | Search | FAQ
Username:
 Password:
Save Password   Forgot your Password?
 All Forums
 Support Forums
 Experimental Control
 Audio headphones switched		  New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

jim.voyvodic
BIAC Faculty

138 Posts
Posted - Sep 22 2003 :  09:13:21 AM  Show Profile  Reply with Quote
As promised, we have switched the audio headphones between the 1.5T and 4T BIAC scanners (effective 9/21/03). Both headphones provide loud high quality sound. The headphones on the 4T are now the pneumatic set with no electrical components in the headset itself. The headphones on the 1.5T have the electrical speakers within the headset. The frequency response of the electrical set is somewhat better than for the pneumatic set. At 4T the electrical headphones produce a slight MR image artifact in functional imaging on phantoms, although this is not detectable on human subjects (because of the susceptibility artifacts already present at the ear canal). With the current setup we should have very good sound quality on both scanners and no imaging artifacts at all.

Jim
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
BIAC Forums © 2000-2010 Brain Imaging and Analysis Center Go To Top Of Page
This page was generated in 0.47 seconds. Snitz Forums 2000