A chest radiograph, colloquially called a chest X- ray ( CXR), or chest film, is a projection radiograph of the chest used to diagnose conditions affecting the chest, its contents, and nearby structures. Chest radiographs are the most common film taken in medicine. Like all methods of radiography, chest radiography employs ionizing radiation in the form of X- rays to generate images of the chest.
Featuring a practical, clinical approach – and written in a quick- access style – this portable, economical reference helps you build a strong foundation in chest x- ray terpreting chest X- rays can seem baffling and intimidating for senior medical students and newly qualified doctors. This highly illustrated guide provides the ideal introduction to chest radiology. Dual- energy X- ray absorptiometry ( DXA, previously DEXA) is a means of measuring bone mineral density ( BMD).
Two X- ray beams, with different energy levels, are aimed at the patient' s bones. When soft tissue absorption is subtracted out, the bone mineral density ( BMD) can be determined from the absorption of each beam by bone.