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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