Hi, Thanks for writing in. MRI lower back creates a series of images. You might be seeing just 3 images and the details mentioned by you are completely technical with not much diagnostic importance. Pos DISP T2 Sag TSE means position display on T2 sequence in sagittal plane which is one of the directions in which images are acquired in MRI of lower back. Please write back with complete report so that we can help you with your query.