Tag Weier Li

Techniques ◼ Fluoroscopy is an imaging modality where continuous x-ray images are obtained to evaluate the body in real time, often with the aid of administered radiopaque contrast material ( Fig. 2.1 ). ◼ Fluoroscopic examinations attempt to answer specific…

Anatomy, embryology, pathophysiology ◼ There are five distinct densities in plain radiography, four of which are natural: gas (black), fat (dark gray), soft tissue (medium gray), calcifications (white), and metal (intense white). ◼ Dedicated assessment of each density is essential…