Radiation Safety 1 (Workbook) Flashcards
Helium nuclei
Alpha particle
Alpha particle charge
+
Beta particles are the same as __.
- Charge?
electrons
negative
Similar to x-rays, but originate in nucleus rather than outer shell.
Gamma rays
Gammy ray charge
no charge
Activity formula
A fin = A initial ^-lambda*t
Unit for activity
Ci
Definition of ___: emission of particles and energy from an atom in attempt to become stable.
Radioactivity
Same # of protons, diff # of neutrons
Isotope
…..
Isobar
Same # of neutrons, diff # protons
Isotone
Metastable, everything is the same
Isomer
Definition of ___: time it takes for activity to become half of initial activity
Half-life
Definition of __: Avg lifetime decay
Mean life
4 types of brachy therapy:
Intracavitary
Intraluminal
Intervascular
Interstitital
Type of brachy used for cervix, vagina, uterus.
- examples of applicators for cervical tx (2)
Intercavitary
- tandem & ovoid, fletcher suite
Type of brachy:
Within a body tube
- examples
Interluminal
- bronchial & esophageal
Type of brachy:
Use a catheter/needle to place within tissue (seeds)
Interstitial