Radiology
18 important questions on Radiology
What are the only 2 factors that affect film quality
Increased mA, Exposure time, kVp, Filtration, and Distance mean what
ET= increased density
kVp= increased density
Filtration= decreased density
Distance= decreased density
Short scale of contrast
decreased kVp and filtration
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Target to film distance?
Maxillary PA anatomy
tuberosity
zygomatic arch
sinus floor
sinus cavity
septum in sinus
Maxillary premolar PA will show X/Y formation, what is it made of
nasal cavity
sinus floor
sinus cavity
Maxillary anterior PA anatomy
nasal septum
anterior nasal spine
incisive foramen
Mandibular posterior PA anatomy
internal oblique ridge
mylohyoid ridge
inferior alveolar nerve
mental foramen
Panoramic: places too far posterior
pudgy=posterior
Panoramic: chin too low
condyles off top of image
Panoramic: imposing air space
tongue not places against palate
Panoramic: imposing spinal shadow
patient slumped forward
Biological sensitivity to radiation
children are more sensitive
Somatic vs. Genetic effects
somatic cells are everything else
High sensitivity tissues
lymphoid tissue
bone marrow
intestines
mucous membranes
Medium sensitivity tissues
growing bone
salivary glands
fine blood vessels
lungs
kidneys
liver
Low sensitivity tissues
skeletal muscle
heart
optic lens
mature bone
mature cartilage
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