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
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2
Q

Contour

A

right eye

left eye

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3
Q

CT scanning borders

A

Superior: top of skull with flash

Inferior: low neck including the clavicles

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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

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5
Q

technique

A

SAD

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6
Q

Machine and energy

A

6 MV

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7
Q

depth of treatment

A

midplane

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8
Q

field arrangement

A

SAD POP helmet laterals (90/270)

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9
Q

prescription

A

300 cGy/fx x 10 fx = 3000 cGy

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