MF RADIOLOGY Flashcards
Used to assess the potential for biochemical changes in specific tissues. “Energy absorbed in tissue.”
milliGrays
Absorbed dose
Used to assess how much biological damage is expected from the absorbed dose. (Different types of radiation have different damaging properties)
“Impact radiation has on tissue”
milliseiverts
Equivalent dose
Used to assess the potential for long term effects that might occur in the future. Tissue sensitivity/damage from radiation to exposed population RISK! Takes into account the tissue or organ weighting factor.
*milliseiverts *
Effective dose
Dosimetry unit used by the international commission on radiological protection to estimate damage from radiation to the exposed population is called ________. Units?
Effective dose
milliseiverts
Increased photons, radiation, and exposure
Smaller voxel (<0.4)
CBCT assess buccal bone thickness if correct voxel size
Standard of care for CBCT except:
- Smallest possible field of view
- Smaller voxel size
- Smaller MA setting
- Shorter exposure time
- Risk is the same for all patients
Risk is the same for all patients - FALSE
- Radiation levels differ between patients
- Higher radiation is still a risk for some patients
CBCT advantages
- Secured storage
- Improved data
- Lower operating cost
- Decreased exposure
- NOT higher resolution
Imaging for Degenerative TMJ
CBCT (if not there…CT)
Imaging for Condylar Hyperplasia
TC99 (most radiation)
Imaging for Disc Perforation
Arthrography
Imaging for Internal Derangement
MRI
Digital vs Silver Halide
Digital better than silver halide: price difference (more expensive), less radiation, NOT better resolution
X-ray filter is made of _______.
Aluminum
Purpose of filter is to __________.
Remove lower energy x-rays
High density vs low density
Black (high:dark), White (low:light)
