Radiographic Imaging

Radiographic imaging technicalities 

75 cards   |   Total Attempts: 189
  

Cards In This Set

Front Back
MAs
Milliampere seconds, product of "mA" and "s"
MAs
Quality, images
SID
Source to image distance
the normal distanse between the source of xrays and the image receptor
Photographic qualities
Density
contrast
Geometric qualities
Recorded detail
distortion
Denisty
Degree of blackening of the image.
MAs
The Main controlling factor of density.
Reciprocity law
To result in equivalent mAs values, mA & time must change in the opposite direction by the same factor
PATIENT FACTORS
Cell composition
relative atomic number
thickness
cell density
pathology
KVp
Controls the penetrating ablilty of hte primary beam which can easily penetrate less dense tissue
KVp
Determining factor, Highest Energy Level (peak) of the x-ray photons within the primary beam
KVp
Affects density by means of the15% rule
15% rules says
If you increase KVp by 15% you will double the density on the image, image will be 2x as dark.
if you decrease by 15% you will halve the density.
KVp= 80
mA= 200
time=.1s
20 mAs
15% of 80= 92
new mAs 40 mAs
to return to original density decrease or increase by 1/2 or 2x, mA or time
Distance
Affects density via the