Hi Gonzalo,
indeed, here are the references Bruce is refering to:
http://www.ncbi.nlm.nih.gov/pubmed/19233293
http://www.ncbi.nlm.nih.gov/pubmed/16651008
Image contrast to noise ratio per unit time of acquisition is different
because of different T1s and lower SNR. Different scan durations will
also give different head motion biases. Then differences can also
increase depending on protocol and scanner model/vendor differences. It
is in general cleaner to not mix data from multiple fields. If you have
large numbers and well balanced cohorts you can test for differences in
healthy controls.
Jorge
On 06/06/2016 17:40, Bruce Fischl wrote:
Hi Gonzalo
we seek to minimize these explicitly, but given the difference in T1s
at different field strength it's pretty hard to get rid of them
completely. Xiao Han wrote a paper on this, and I think Jorge Jovicich
did as well
cheers
Bruce
On Mon, 6 Jun 2016, Gonzalo Rojas Costa wrote:
Hi:
There exist any difference between the volumetric values obtained
using 1.5T and 3.0T images ? Any paper about it ?
Sincerely,
Gonzalo Rojas Costa
Laboratory for Advanced Medical Image Processing
Department of Radiology
Clínica las Condes
Lo Fontecilla 441, Las Condes, Santiago, Chile.
Tel: 56-2-2105170
Cel: 56-9-97771785
www.clc.cl
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