mellss yr4 radiology usg
TRANSCRIPT
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Amalina Aminuddin 082012100067
Ultrasonography
Applications
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Obstetric GynecologyAbdomenNeck
CONTENTS
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OBSTERTRIC
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Gestational sac-5 weeks Mean Sac Diameter: 2-3 mm
Yolk sac -5 weeks Circular anechoic
structure within gestational sac, but outside the amniotic membrane
Fetal pole and cardiac activity -6weeks Thickening on the margin of
the yolk sac . Cardiac activity detected when
fetal pole measures ≥7 mm. Location and number of fetus
1.CONFIRMATION OF PREGNANCY
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• In first trimester :•Miscarriage • Blighted ovum
• Molar pregnancy• Snowstorm appearance
Ectopic pregnancy• Absence of intrauterine
pregnancy with positive pregnancy test• Adnexal mass separated from
the ovary
2. VAGINAL BLEEDING IN PREGNANCY
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• In second and third trimester :• Placenta previa • Placenta abruptio
2. VAGINAL BLEEDING IN PREGNANCY
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The Crown-rump length 6-13 weeks gestational age
Femur length ,biparietal diameter, head circumference and abdominal circumference Shepard’s formula Hadlock’s formula
3.GESTATIONAL AGE AND FETAL WEIGHT
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Before 20 weeks
4. FETAL MALFORMATION DETECTION
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Polyhydramnios AFI >24 cmLargest vertical pocket >8cm
Oligohydramnios AFI <5cmLargest vertical pocket <2cm
5. AMNIOTIC FLUID ASSESSMENT
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GYNECOLOGY
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To assess pelvic organs,To diagnose and manage
gynecologic problems including endometriosis, leiomyoma, adenomyosis, ovarian cysts and lesions,
To diagnose gynecologic cancer
GYNECOLOGICAL USES
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ABDOMEN
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Abdominal ultrasound imaging is performed to evaluate the: Kidneys Liver Gallbladder Pancreas Spleen Abdominal aorta and other blood
vessels of the abdomenCan be diagnostic or therapeutic
ABDOMINAL USG
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NECK
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Indications for head and neck ultrasound examinations : Salivary glands; Lymph nodes; Congenital lesions; Miscellaneous mass lesions; Infection and trauma; Endocrine
HEAD AND NECK USG
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DC Dutta Textbook of obstetricshttp://www.aium.org/resources/guidelines/
headneck.pdfwww.ob-ultrasound.nethttp://www.radiologyassistant.nlhttp://radiopaedia.org
REFERENCE