Radiation Practices
Terms
undefined, object
copy deck
- The wavelengths, energies, and frequencies of radiation used for imaging purposes are all capable of what?
- Ionizing atoms of irradiated material
- What are some type of damage irradiation can cause?
- cataracts, cancer, and genetic damage
- Inhaled Nuclides: primarily Radon 222
- 200 mrem
- Ingested Nuclides: primarily K 40
- 40 mrem
- External Terrestrial Radionuclides
- 28 mrem
- Cosmic Rays
- 27 mrem
- Total Background radiation
- 295 mrem
- Medical X-rays (including CT)
- 39 mrem
- Nuclear Medicine
- 14 mrem
- Fallout
- <1 mrem
- Technological Sources
- 7 mrem
- Nuclear Power
- <.05 mrem
- Total Man Made Sources
- 60 mrem
- Skull X-ray
-
Skin Dose: 200 mrem
Gonadal Dose: <1 mrem - Chest X-ray
-
Skin Dose: 10 mrem
Gonadal Dose:<1 - C-spine x-ray
-
Skin dose: 150 mrem
Gonadal Dose: <1 - Lumbar Spine x-ray
-
Skin Dose:300 mrem
Gonadal Dose: 225 mrem - Abdomen X-ray
-
Skin Dose: 400 mrem
Gonadal Dose:125 - Pelvis X-ray
-
Skin Dose: 150 mrem
Gonadal Dose: 150mrem - Extremity X-ray
-
Skin Dose: 50 mrem
Gonadal Dose: <1 - CT Head
-
Skin Dose: 3000 mrem
Gonadal Dose: 50 mrem - CT Pelvis
-
Skin Dose: 4000 mrem
Gonadal Dose: 3000 mrem - What is shielding referred to?
- anything as long as enough of it is used to reduce the radiation
- What is the acceptable level for the general public?
- 2 mR per week
- the acceptable level for the occupationally exposed?
- 10 mR per week
-
NCRP requires that typical radiographic euipment be protected by?
For CT? -
2 lbs per suare foot, 1/32" thick, or 2 layers of gypsum drywall(1.6 cm thick)
5 lbs per square foot, 5/64 inch thick, 5 layers of gypsum drywall 4 cm thick - ALARA is based on what dose response relationship?
- linear, nonthreshold
- What is the safe dose for radiation?
- No safe dose
- cancers and genetic effects occur in what relationship to the amount of exposure?
- direct