FALL 2015 FINAL! Flashcards
Lens of the eye dose
15 REMS
LD 50/30= Lethal dose that can kill __1__ of exposed population in __2__ days. Range __3__gy
- 50%
- 30
- 3-4
_______ rays of 10-20 kVp used to treat acne and ringworm. German word for “boundary.”
Grenz
NCRP says tabletop dose for routine fluro CANNOT exceed __1__ R/min; High Level Control Fluoro (HCLF) CANNOT exceed __2__ at tabletop.
- 10
2. 20
Temporary sterility may our at gonadal dose of __1__ Gy; Permanent sterility at 5-6 Gy
- 2
2. 5-6
Whole body dose as low as ____ may cause a measurable hematologist depression
.25
Most radiosensitive/least radioresistant cells in body
Lymphocytes
Least radiosensitive/most radioresistant cells in body
Adult revenue cells
Photomirograph showing chromosomal “map”
Karotype
Cells are most radiosensitive during _______
Metaphase (M)
Indirect effect damage occurs __1__% of the time (due to __2__ o water); Direct effect of damage occurs __3__ of the time.
- 95
- Radiolysis
- 5%
Diagnostic and Leukemia are potted on linear _______ curves
Non-threshold
Somatic effects occur in the ________
Exposed individual
Late somatic effects that can be directly related to dose received.
Deterministic effect
Deterministic effect are not likely to occur from ______ imaging procedures
Diagnostic
Late somatic effects that do not have a threshold, occur in arbitrary manner, severity does not depend on dose, and can occur after high or possibly low lever exposures
Probabilistic Effects
__1__ means estimating the dose-used by radiobiologist to establish dose-response curve for diagnostic exposures.
Extrapolation
Cancer is the MOST important __1__ effect caused by exposure to __2__ radiation
- Stochastic somatic effect
2. Ionizing
Radial with dial painters=mostly young __1__ who suffered __2__ cancer (radial chemically similar to __3__)
- Women
- Bone
- Calcium
Early uranium miners suffered from high incidences of _____ cancer
Lung
Infants treated for an enlarged __1__ later suffered from __2__ cancer.
- Thymus glands
2. Thyroid
Known groups exposed to high levels of radiation include __1__ and __2__ (Japan 1945) and __3__ (Soviet Union 1986)
- Hiroshima
- Nagasaki
- Chernobyl