You did not mention your age or other relevant medical history like diabetes
or high blood pressure
, because in advanced age and with some such medical conditions it is not uncommon to find such small hyperintensities on FLAIR & T2 weighted images in paraventricular regions, you mention. All the same, I do understand your concerns regarding possibility of MS, and would like to add that MS is a clinical diagnosis and MRI
only sustantiating the suspicion. Plus there are some typical appearances of these plaques, being perpendicular to lateral ventricular margins and some evident along septo-callosal interface. Very often, visual symptoms are there and you may consider Visual Evoked Potetioa (VEP) as an aditional test. I would be happy to try and answer any question that you may have.
Dr Rajesh Kapur