Ch 38 Voc Words

penumbra

• form of secondary radiation that occurs when an x-ray beam has been deflected

• mean energy or penetrating ability of the x-ray beam

• most penetrating beam produced at the target of the anode

• blurred or indistinct area that surrounds an image

energy

• forms of waves of energy

• ability to do work

• overall darkness

• basic unit of matter

image receptor

• amount of energy absorbed by tissues

• high-energy ionizing electromagnetic radiation

• measure of how well an image reproduces the fine details

• recording medium for an image, normally film, phosphor storage plate, or a digital sensor

radiograph

• flexible lead shield that is placed securely around the neck

• image produced on photosensitive film by exposing the film to radiation and then processing it

• forms of waves of energy emission through space or material

• form of secondary radiation that occurs when an x-ray beam has been deflected

anode

• basic unit of matter

• positive electrode in the x-ray tube

• a unit of electric current

• negatively charged particle in the atom

ion

• electrically charged particle

• radiation that produces ionization, resulting in harmful effects

• part of the x-ray tube

• change in the size of an image

primary bean

• radiation that produces ionization

• measure of how well an image reproduces

• most penetrating beam produced at the target of the anode

• flexible lead shield that is placed securely around the neck

matter

• amount of energy absorbed by the tissues

• anything that occupies space and has form or shape

• minute bundle of pure energy

• science or study of radiation as used in medicine

radiography

• overall darkness of an image

• type of x-ray procedure

• forms of waves of energy emission

• effects of radiation that cause illness

radiograph

• an image produced on photosensitive film by exposing the film to radiation

• forms of waves of energy emission through space

• effects of radiation

• amount of energy absorbed by tissues