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I t
l j
l
i
Delineation of CTVn_L4 – supraclavicular lymph node area
n erna ugu ar ve n
Common carotid artery
Superior border:
subclavian
Sternocleidom. muscle
artery (+ 5 mm)
Ventral border:
sternocleido
l
Anterior scalene muscle
musc e
Medial border:
glandula
thyroidea; between carotid
artery and jugular vein (no
margin)
L t
l b d d l t
l
a era or er- orso- a era
border
: anterior scalene
muscle
Dorso-medial border
: carotid
artery excluded
Esther Troost
MAASTRO clinic