Demonstrates knowledge of the principles of growth and development, the ability to assess and interpret age/developmental specific data, response to treatment, provides appropriate data to other caregivers, and involves family and/or significant other in decision-making related to plan of care as described in the departments policies and procedures. The medical sonographer demonstrates the knowledge and skills necessary to provide care, based on physical, psychosocial, educational, safety and related criteria, appropriate to the age of the patient served in the employees assigned department/unit.