Is imaging used to assess ''redness''?

With cellulitis or infective conditions, generally these are clinically managed without the need for any imaging. If there is a concern of an underlying collection or abscess formation, you might need an ultrasound or in very rare instances a CT or an MRI scan, particularly if you're concerned about a deep collection in a body cavity. Dermatological conditions generally do not require any form of imaging and are managed with sequential follow-up visits and to assess progression of the condition. Venous disease generally does require imaging and this is in the form of specialised ultrasound imaging called duplex imaging, which measures flow velocities in the veins and the direction of flow. So we would expect the flow in the venous system to be from the foot back to the heart, but if it lets blood the opposite way, that can cause venous insufficiency, associated swelling, associated thrombophlebitis and inflammation of the venous system in a certain subgroup of patients. you