Types of Radiography:
Positron Emission Tomography (PET)
Uses high-energy physics and computer techniques to study lung function; useful for quantitative measurement of regional puImonary perhsion and for studying ventilation-perfusion relationships.
Magnetic Resonance Imaging
Magnetic Resonance Imaging (MRI) is the use of magnetic fields rather than radiation to create images of body structures. MRI is used much like CT scan. The MRI is more definitive than CT because it creates more detailed images of anatomic structures.
Enables roentgenologist to view heart, lungs, and diaphragm in the dynamic (moving) state.
Outlines the esophagus and reveals displacement of esophagus and encroachment on its lumen by cardiac, pulmonary, and mediastinal abnormalities. The procedure has already been discussed in BNSL-106.