Abstract #1896

Investigating the effect of reduced TR in detection of RSNs at a low field MR scanner

Arjama Halder¹, Demetrius Riberio de Paula², William Handler^3,4, Andrea Soddu³, and Blaine A Chronik^1,3,4

¹Medical Biophysics, Western University, London, ON, Canada, ²Radbound University, Nijmegen, Netherlands, ³Physics and Astronomy, Western University, London, ON, Canada, ⁴xMR Labs, London, ON, Canada

Synopsis

Initial investigation of effects due to reduced TR on RSNs at a 0.5 T MR scanner. There was a decrease in detected regions within specific networks for the 3 T data as TR was reduced. However, when the tSNR was approximately 17 ignoring the expected decrement of detected regions compared to the 3 T data, there was an increase in positive detection at shorter TR. These result show the possibility of extracting true RSNs for a low field scanner using shorter TRs which can lead to efficient sequence design since T1 is shortened at low fields.

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