Apologies for cross-posts, and certianly to the vertical-bore people out there,
but I'm hoping someone may have a need for this.
This post is for a colleague, and all enquiries should be directed to him at
kacher@bwh.harvard.edu
Ross Mair
Brigham and Women's Hospital
Boston, MA
>
> For sale: Bruker model B-GK 33 local gradient coil
> currently used in fMRI studies at Brigham and Women's Hospital in
> Boston.
>
> High speed, actively shielded, three-axis, 33 cm diameter local gradient
> head coil. The small diameter allows for faster switching time,
> higher gradient strength, and higher linearity of the gradient field. The
> gradient head coil will allow for switching with a rise time of 100 us
> for zero to max (3 gauss/cm). A gradient strength of 3 gauss/cm is
> stronger than the usual gradient field, which typically ranges from 1
> gauss/cm and below. The z-gradient coils are built in a non-symmetric
> arrangement to eliminate a field extremum at the shoulder end of the
> image, minimizing non-linearities and aliasing at the end of the image.
>
>
> Inner diameter: 330mm
> Linear volume (20% pk-pk) 240mm dsv
> Distance flange-isocenter 150mm
> Inner diameter of shield 560mm
> (enclosing shoulders)
> Gradient strength at 150 A 30 mT/m
> Inductance < 250 uH
> Max current 150 A
> Max voltage 300 V
> Field distortion due to
> interactions with magnet
> without preemphasis: <1%
> with preemphassis <0,1%
>
>
>
> For more infomration, please contact Daniel Kacher
> (617) 278-0188 or kacher@bwh.harvard.edu
>