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Patient is pallor, weak, rapid pulse on heavy respiration.
These are all signs of:
What is an effected side effect in supratentorial treatment?
(back of head) mood changes, vision changes....balance
What is the organ that blood flows through before the inferior vena cava?
Why do you use shielding for nasal cancer?
To protect the lens of the eye and inside of the nostrils
What is required on a prescription?
- treatment volume
- intended tumor dose
- number of treatments
- dose per treatment
- frequency of treatment
- type & energy of radiation
- beam shaping devices
What is most common reason to use bolus for photon treatment
to fill air gaps
Know the OER ratio. Anoxic/ aerobic
the ratio that compares the effects of radiation in oxygenated tissue to hypoxic tissue
using contrast that isn't diluted during a CT scan can cause
patient side effects & artifacts
What is the best immobilization device for a ct sim?
What should you consider?
make sure it fits through the bore & be able to repeat the set up
What can you not get from a fomite?
malaria, lyme disease, west nile
How do you bill contrast for simulation?
2cm anterior and 2 cm superior of EAM. what are you treating?
If the gantry doesn't move in arc therapy, what do you do?
What type of wedge produces a straighter isodose curve?
For healed scar tissue do you treat (more or less)
- (there is a possibility that as the knife was coming out it seeded that cancer cells.
- Scars are always included in the treatment field and the boost field)
List blood cells in order of sensitivity
crypt cells, endothelial cells, parenchymal cells, erythrocytes
What side effect is the latest effect after radiation?
What is the occupational worker limb dose in mSv?
50 mSv or 5rem
What is the most sensitive period of time for a fetus
What is the half life for Cesium 137?
What is the density for the lungs?
What is the density for air?
When a patient moves during a ct, what does it cause?
blurring and artifact and missed registration
Most common sign of nasopharyngeal cancer
nose bleeds, difficulty hearing