neo 3 Flashcards
(40 cards)
marking of a photographic image of internal structures of body by passing xrays through body to a xray film or radiograph
radiography
ability to penetrate matter and depends on the density of that matter
xray
absorption of xrays
penetration
very dense objects will not allow penetration
white shadow
xrays will pass through less dense objects
black shadow
form of electromagnetic radiation and produced in an xray tube by focusing a beam of high-energy electrons on to tungsten target
xrays
under penetration
white xray
over penetration
black xray
adequate inspiration
8-9th posterior / 6th anterior rib
more than 9 posterior ribs
hyperinflation
less than 8 posterior ribs
poor inspiration
ball-valve effect ; inflated and stretched on one side
unilateral hyperinflation
presence of air
black structures
supine ; patients who are debilitated, immobilized, or too young ; taken with a portable xray machine at patients bedside
anterior posterior
placed at the 6th anterior rib
diaphragm apex
apex projected higher than 4th anterior rib
underaeration
apex lower than 8th anterior rib
overaeration
having the patient lie on the left or right side
lateral decubitus
presence of free pleural fluid and air
horizontal beam
shows heart size, mediastinum, and hilar structures
vertical beam
appear radiolucent and symmetric in voume
normal lungs
branching, linear shadows that taper in size as they extend from hilum t lung periphery
pulmonary vessels
empty and collapsed ; visualized only when it contains fluid, air, or soft tissue
pleural space
should be distinct
heart borders