We have just started generating mp-rage volume scans from our new 3T Siemens
Trio, using the 8-channel head coil.
The images look great, with excellent grey-white matter contrast, but there
is a noticeable bias field.
Fast seems to make a great job of bias-correcting these images, but I have
1) I wonder whether it is possible (on the command line) to simply
bias-correct the images, without doing the segmentation? Or does the
segmentation not really contribute to the processing time?
2) Is it possible to apply the generated bias field image to another image
(i.e. The non-skullstripped image)? Is it simply a matter of multiplying in
Thanks and all the best,
Dr K.D. Singh
Senior Lecturer and Convenor of the Neuroimaging Research Group,
Director, MRI Research Centre,
Neurosciences Research Institute
Aston University, Birmingham B4 7ET, U.K.
Tel/Fax: +44 (0)121 [359 3611 ext 5176/5190]/[333 4220]
[log in to unmask], http://www.aston.ac.uk/lhs/staff/singhkd/