Target Outlining

Question 1

what volumes should be delineated?

Answer 1

GTV, CTV, ITV, PTV

Question 2

how many GTVs are common?

Answer 2

usually one post-op has no gtv

Question 3

how many ctvs can be present?

Answer 3

multiple primary and secondary volumes

Question 4

what is the expansion of the ptv for a prostate patient?

Answer 4

1cm for isotopic

0.7 post for prostate

Question 5

principles of contouring?

Answer 5

consistency
accuracy
protocols

Question 6

what are PRVs?

Answer 6

planning risk volumes with are margins around OARS

Question 7

OARs for chest and abdomen?

Answer 7

oesophagus
lungs
heart
kidney
liver
spinal cord

Question 8

Main OAR for pelvis patients?

Answer 8

Bladder
rectum
small bowel
rt and lt femur
penile bulb
seminal vesicles

Question 9

What are some common volumes used for a breast patient?

Answer 9

Chestwall ctv
breast ctv 
lumpectomy ctv
nodal volumes 
OARs

Question 10

what other structures in breast require contouring?

Answer 10

CTVs
lungs 
heart
surgical clips
imc 
spinal cord

Question 11

where does the beaches plexus run?

Answer 11

C5 to T2

Question 12

what is the common PRV margin for the spinal cord?

Answer 12

0.5cm

Question 13

what is the common prv for the spinal canal?

Answer 13

0.3cm

Question 14

what is the common prv for the brainstem?

Answer 14

0.5cm

Question 15

what is the common prv for the lens?

Answer 15

0.3cm

Question 16

what is the common prv for the optic chiasm?

Answer 16

0.3cm