Lab 7 Resource Sheet - Helmet Brain Flashcards
1
Q
pateint position and immobilization
A
supine B HR U-frame w/ short mask HOC holding ring knee sponge
2
Q
Contour
A
right eye
left eye
3
Q
CT scanning borders
A
Superior: top of skull with flash
Inferior: low neck including the clavicles
4
Q
field borders
A
Superior: 1.5 cm flash off the SKIN at the top of the head
Inferior: C2
Anterior: 1.5cm flash off the skin of the anterior frontal bone
Posterior: 1.5cm flash off the skin of the posterior occipital bone
5
Q
technique
A
SAD
6
Q
Machine and energy
A
6 MV
7
Q
depth of treatment
A
midplane
8
Q
field arrangement
A
SAD POP helmet laterals (90/270)
9
Q
prescription
A
300 cGy/fx x 10 fx = 3000 cGy