TCDHA Rad Theory - Week 1&2
Study online at https://quizlet.com/_ezkq06
1. thyroid collar flexible lead shield
-protect the thyroid gland from scatter radiation.
2. lead apron a flexible lead shield
-to protect the patients reproductive and blood forming tissues from scatter radi-
ation
3. inherent filtration primary beam passes through glass window, oil bars and tube head
- 0.5 to 1.0mm aluminum
4. added filtration FILTERS OUT LONG WAVELENGTHS W LOW ENERGY AND SOFT RADIATION
aluminum discs in the path of X-ray beam
total filtration= -1.5mm below 70kVp
-2.5mm above 70 kVp
5. collimator restricts size and shape of X-ray beam
circular- beam= 2.75in d
rectangular- exposes 60% less tissue
6. primary radiation -useful beam
penetrating xray beam that exits tube head
, TCDHA Rad Theory - Week 1&2
Study online at https://quizlet.com/_ezkq06
7. secondary radia- created when the primary beam interacts with matter
tion
8. Scatter radiation A form of secondary radiation
-when an x-ray beam has been deflected from its path by interaction with matter
9. insight film -fastest intraoral film
(F-speed) -20% reduction on exposure over E-speed
-film holding devices are used
-limits x radiation received
10. radiographer -stand 6ft away at 90-135 degree angle to X-ray beam
protection
11. leakage radiation radiation that emits from tube head
-excluding primary beam
12. dose you can receive in a specific period of time
Study online at https://quizlet.com/_ezkq06
1. thyroid collar flexible lead shield
-protect the thyroid gland from scatter radiation.
2. lead apron a flexible lead shield
-to protect the patients reproductive and blood forming tissues from scatter radi-
ation
3. inherent filtration primary beam passes through glass window, oil bars and tube head
- 0.5 to 1.0mm aluminum
4. added filtration FILTERS OUT LONG WAVELENGTHS W LOW ENERGY AND SOFT RADIATION
aluminum discs in the path of X-ray beam
total filtration= -1.5mm below 70kVp
-2.5mm above 70 kVp
5. collimator restricts size and shape of X-ray beam
circular- beam= 2.75in d
rectangular- exposes 60% less tissue
6. primary radiation -useful beam
penetrating xray beam that exits tube head
, TCDHA Rad Theory - Week 1&2
Study online at https://quizlet.com/_ezkq06
7. secondary radia- created when the primary beam interacts with matter
tion
8. Scatter radiation A form of secondary radiation
-when an x-ray beam has been deflected from its path by interaction with matter
9. insight film -fastest intraoral film
(F-speed) -20% reduction on exposure over E-speed
-film holding devices are used
-limits x radiation received
10. radiographer -stand 6ft away at 90-135 degree angle to X-ray beam
protection
11. leakage radiation radiation that emits from tube head
-excluding primary beam
12. dose you can receive in a specific period of time
