Sonographic Evaluation of the Female Pelvis Ch 42 Flashcards
Patient Prep & History
- Date of LMP
- Gravidity & Parity
- Symptoms
- Family History
- Past Surgeries/Biopsies
- Lab Tests
- Hormone Regimen
Transabdominal
transducer placed at lower abdomen/pelvic area, full bladder
Transvaginal
an internal pelvic
exam, empty bladder
documentation uterine shape, size, orientation
- Length measured in long axis
from fundus to cervix - AP depth in long axis from
anterior to posterior walls
(perpendicular to length) - Width measured from transverse
approach
documentation endometrium
Thickness of endo measured, analyze echogenicity
documentation cervix
Diameter measured with pregnancy
documentation myometrium (fibroids, irregularities)
Evaluated for contour changes,
echogenicity, masses
Adnexa- Ovaries & Fallopian
Tubes
- Evaluate ovaries- size & shape
- Position relative to uterus (Left?
Right?) - Fallopian tubes not always seen
sonographically, document if seen
Cul-De-Sac
- Evaluate for free fluid or mass
- Differentiate normal bowel loops from
mass
If a mass is detected anywhere in
pelvis, document size, location, echogenicity related to uterus and ovaries
Evaluation of a Mass
- Location- intrauterine or extrauterine
- Size- length, AP, width
- External Contour- smooth or irregular borders? well-defined margins or ill-defined?
- Internal Consistency- cystic, complex, solid
Transabdominal Scanning Protocol Sagittal plane:
- cervix, endocervical canal
- posterior cul-de-sac
- uterus (midline, right, and left)
- endometrium
- right ovary and adnexa
- left ovary and adnexa
Transvaginal Scanning Protocol Sagittal: Uterus
- Image from cervix to fundus, endometrial cavity: measure long axis
- Angle slowly to right of uterus
- Angle slowly to left of uterus
- Pull probe out slightly to image cervix
Transabdominal Scanning Protocol Transverse plane:
- vagina, cervix and posterior cul-de-sac
- uterine corpus/body and endometrium
- uterine fundus and endometrium
- right ovary and adnexa
- left ovary and adnexa
Transvaginal Scanning Protocol Coronal: Uterus
- Rotate transducer 90 degrees; image
uterine fundus, body, and cervix with
endometrial canal - Look for free fluid surrounding
uterine cavity.
Inner layer of uterus is
endometrium.
Endo layer is
thin, compact,
relatively hypovascular.
Thin outer layer separated from
intermediate layer by arcuate
vessels.
Normal arcuate vessels often seen
in
periphery of uterus and should not be mistaken for pathology.
Radial arteries arise as multiple
branches from
arcuate arteries and travel centrally to supply rich capillary network in deeper layers of
myometrium and endometrium.
ovaries are
mobile and can move considerably
in pelvis, depending on bladder volume
and whether woman has had previous
pregnancy.
Uterine location influences
position of ovaries.
ovaries are in shape
elliptical, with long axis usually oriented vertically.
Transvaginal scanning is superior for
characterizing texture of ovary.
Ovary is located just
lateral to uterus and
anteromedial to internal iliac vessel,
which can be used as landmark to
localize the ovary.
Transvaginally, the ovaries are easiest to
locate in
transverse plane lateral to the
cornua.