Yi Li1, Jiri Mares1, and Timo Liimatainen1
1Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland
1Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland
We applied RAFFn to study contrast between cardiac skeleton and myocardium. We found the relationship
between relaxation times and RAFFn pulse duration. The optimal pulse duration
to gain maximum contrast was close to 2.5 ms. RAFF2 and T2 maps demonstrated higher
contrast compared to others.
Figure 3. Relationship between CNR and TRAFF2 pulse duration. Mean and SEM of CNR, CNR, contrast to noise ratio. CNR
is calculated as follow CNR=[T(fibrous skeleton)-T(myocardium)]/σo(myocardium)×100%; σo, standard deviation of the noise; SEM, standard error of the mean.*p<0.05, **p<0.01, Paired two-tail Student’s t-test.
Figure 2. Relationship between relaxation times in fibrous skeleton and
myocardium areas and TRAFF2 pulse duration.