Scalp (Definition) 1  Scalp is the part of the skin on the skull, deeply attached to the skull and has the hair shafts from it.Rest of the skin in the head like facial skin(beard) has only 2 layers -epidermis and dermis. 2  Itching in the scalp can be triggered by a variety of causes. 3  Dandruff is when dead skin cells from the scalp shed.
Medical imaging is the technique and process of creating visual representations of the interior of a body for clinical analysis and medical intervention. Medical imaging seeks to reveal internal structures hidden by the skin and bones, as well as to diagnose and treat disease.
Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to image the anatomy and the physiological processes of the body in both health and disease. MRI scanners use strong magnetic fields, radio waves, and field gradients to form images of the body.