Radiology Quiz 2 Need To Study Flashcards
Why is the paralleling technique the preferred method when taking intra-oral radiographs?
Produces a better image
Less exposure to thyroid and lens of eye
No super imposition
XCP is standard nowadays
What are the chemicals in the developer?
Hydroquinone Elon Metal Sodium sulfite preservative Sodium carbonate accelerator (activator) Potassium bromide restrainer
What chemicals are in the fixer?
Sodium thiosulfate fixing agent and cleaning agent
Sodium sulfite preservative
Potassium aluminum and aluminum sulfide
Acetic acid
What organs are radioresistent?
Kidneys Nerves Liver Conn tissue Brain
What organs are radiosensitive?
Thyroids Gonads Skin Bone marrow and cells Blood and cells
What does Gy stand for and measure?
Gray
Absorbed in body
What will happen if X-ray films are not properly washed?
Yellowish brown
Wash for 20 minutes
Old developing solutions will cause your film to look?
Light or thin
Old fixer solution will cause what problem?
It will take longer for the image to appear
What will happen if u do fixer before developer?
Film will appear clear
What does XCP stand for?
Extension cone paralleling
What does the point of entry mean?
Position on patients face at which is aimed
Advantages of using automatic?
Proper strength solutions
Correct temperature
Regulation time
What is the occupational exposure for a person during a year and on a weekly?
Year - 5 REM or 5000 mRem or 0.05 sv/yearly
Weekly - 0.1 REM or 100 mRem or 0.001 sv/weekly
Non occupational exposure for a person on a yearly basis?
0.1 REM or 100 mRem OR 0.001 5v/yearly
