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21 terms

Imaging Breast and Posterior

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breast
lie between 2nd rib superiorly and 6th rib inferiorly, sternum is medial border, midaxilla lateral border; teardrop shaped, upper outer portion (tail of Spence) extends into axilla; treated with tangential fields; upper outer, upper inner, lower outer, lower inner quadrants
supraclavicular fossa (SCF)
indentation immediately above clavicle; may not be included in breast treatment
tangential field
skims breast from two opposing angles, with flash off the surface of px; approx 1 cm of lung in field (tolerance); sup border 2nd costal space, inf border 2cm below breast tissue; tail of Spence included; medial and lateral
tail of Spence
upper outer portion of breast; upper outer quadrant, where most breast cancers are located
clavicle
2/3 included in SCF for breast cancer treatment
pectoralis major
medially attached to clavicle and superior five costal cartilages; passes laterally to axilla; inferior border not visible in females, covered by breast
pectoralis minor
thin, triangular muscle, situated at the upper part of the chest, beneath the pectoralis major; attached to the 3-5th ribs near the costal cartilage
flash
radiated area beyond field, included in tx to ensure complete tumor coverage; extends past skin surface; brain, breast, vocal cords; 1-2 cm
scapula
large posterior bone associate with pectoral girdle, palpable on back; spine at T3, inferior angle T7
trapezius
flat triangular muscle, lateral angles at shoulders, superior angle at external occipital protuberance (EOP); inferior angle @ T12
teres major
band of muscle between inferior angle of scapula and humerus, forms posterior wall of axilla
latissimus dorsi
broad muscle on either side of the back, spans from iliac crest of pelvic bones to posterior axilla
subarachnoid space
L4/L5 location of lumbar puncture
iliac crest (posterior)
superior outer margin of hip bone; at level of L4; used to locate lumbar puncture
posterosuperior iliac spine (PSIS)
posterior end of the iliac crest; palpable 5 cm from midline, at level of S2
liac crest (anterior)
superior outer margin of hip bone; at level of L4; used to locate lumbar puncture
posterosuperior iliac crest
posterior end of the iliac crest; palpable 5 cm from midline, at level of S2
obturator foramen
large opening in ischium and pubis of pelvis; used in prostate setup
pubic symphysis
joint formed by bodies of two pubic bones joined by fibrocartilage disc; used in prostate setup
ischial tuberosity
interior surface of ischial body, posterior pelvis; weight borne by this while sitting; used in prostate setup
pelvic brim
continuous oval ridge that runs from pubic crest through arcuate line and sacral promontory of pelvis; superior margin of true pelvis; used in prostate setup