Malden wrote:Jugular wrote:...
I was more interested in your comments on the different protocols used for blood flow analysis in the Dutch study and the sample we have from Haacke.
They both use same machine, GE 3.0 Tesla MRI system:False Creek Healthcare Centre wrote:The 3.0T MRI, used in the newest and most advanced clinical applications, produces images faster and with unprecedented detail.
•State of the art technology
•Double the magnetic field of the 1.5 Tesla MRI
•3T adds certainty to the diagnosis
•Detects diseases that can not be seen with 1.5T
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and the phase-contrast flow quantification with the same velocity encoding: 50 cm/s.
I was more interested in the flow quantitative analysis. The methodology in the Dutch study looked at flow in the deep cerebral veins and straight sinus, whereas the Haacke methodology looks at flow through all the cerebral draining veins at two locations - upper and lower neck.
Why? There is no discussion as to why this methodology was employed vs. Haacke's, of which I presume the authors were aware.
Of uncertain import as well is that 19 of the MS volunteers were RR and 1 PP. I wonder why they didn't use an even distribution of all three types? They do not comment on any differences with their one PP patient.