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 diagnostic imaging procedure that uses radio waves, a magnetic field, and a computer to generate images of the anatomy. MRI is used to visualize the body to assist doctors in their efforts to diagnose certain diseases or conditions and to evaluate injuries. For pediatric imaging, MRI is used for a variety of purposes, including the following: diagnosing diseases of the central nervous system, including the brain and spine.