Part 3

Question 1

– determines the volume of tissue that needs to be encompassed within the radiation field.

Answer 1

TREATMENT PLANNING

Question 2

TUMOR LOCALIZATION SIMULATION
STEP 1. PI
STEP 2.TTVC (ISOCENTRIC DEFINITION).
STEP 3. CPATD
STEP 4. PITAV

Answer 2

PATIENT IMMOBILIZATION
TUMOR TARGET VOLUME CENTER
COMPUTE PLANNING AND TREATMENT DELIVERY
PLANNING IMPORTANT TREATMENT ACTION VERIFICATION

Question 3

2 IMMOBILIZATION DEVICES

Answer 3

Thermoplastic mask
Alpha Cradle

Question 4

– (HEAD)made up of thermoplastic. When heated and placed on
patient, molds in shape.

Answer 4

THERMOPLASTIC MASK

Question 5

– (HEAD AND EXTREMETIES) made of 2 chemicals that can be mixed together to form a styro-like material that may take shape of the patient.

Answer 5

ALPHA CRADLE

Question 6

3 types of Radiation Therapy

Answer 6

1. EBRT,XBRT OR TELETHERAPY
   BRACHYTHERAPY

Question 7

treating lesions on or near the surface of the skin.
- 50-70 cm. SSD
- 50-120 kVp

Answer 7

Superficial Machine

Question 8

– electron accelerator that uses magnetic induction to accelerate electrons in circular
path; also capable of producing photons.
- By Kerst in 1941

Answer 8

Betatron

Question 9

artificially produced isotope formed in a nuclear reactor
- 1
st skin-sparring machine80cm.
- Replaced orthovoltage in 1950’s
- SSD AT
- Unit known as “work horse”
- 1
st RadThera unit to rotate 360° around a patient
- From Cobalt 59
- Emits two gamma ray beams with 1.17 and 1.33 MeV

Answer 9

Cobalt 60

Question 10

– moderately superficial tissues
- 50-70 cm. SSD
- 250 kVp

Answer 10

Orthovoltage

Question 11

• accelerates electron in a straight line or linear path
• By Widroe in1925
• SSD AT 100cm.

Answer 11

Linac