The various types of MRI scans that are used â most commonly the T1-weighted scan and the T2-weighted scan â measure this relaxation time in different ways. Computer programs translate these data into cross-sectional pictures of the water in human tissue.
What is Hypertensive Retinopathy? Hypertensive retinopathy is damage to the retina from high blood pressure. The high blood pressure changes the microvasculature of the layer of tissue at the back part of the eye. Severe damage to the eye is likely if the person has been living with high blood pressure for a long period of time. Common symptoms.
diabetic retinopathy retinal manifestations of diabetes mellitus, including microaneurysms and punctate exudates. There are two major forms of diabetic retinopathy, nonproliferative and proliferative. The nonproliferative form is characterized by dilation of the retinal veins and microaneurysms which may leak blood cells and/or plasma, causing internal hemorrhaging or edema in the retina.