Emphysema: Hyperaeration means that the lungs appear more radiolucent on chest x-ray and over expanded. This is due to enlargement of the airspaces caused by destruction of the walls of the alveoli (air sacs).
A radiographer works with medical imaging equipment (particularly X-rays) to create images of patients that a physician may use in diagnosing injuries and disease. They typically work in hospitals, large clinics or as part of a dedicated radiography business that sees referrals for these procedures.
What does a radiologist do? A radiologist is a medical doctor that uses technology, computers, medical imaging and medical equipment like MRI, computed tomography (CT Scans), and ultrasound to assist other doctors in figuring out issues related to their patients' medical conditions.