SPR 2019 Fetal Course SAM Session - Session 11

Saturday, September 14th

Claustrophobia

Projectile injury

Tissue heating

Nerve stimulation in the fetus

The average power deposited in the tissue by a 3T scanner is 2x that of 1.5T.

The average power deposited in the tissue by a 3T scanner is 4x that of 1.5T.

The average power deposited is the same at 3T and 1.5T because the regulatory limit in Watts/kg does not depend on the field strength.

The peak power at 3T will actually be less

Quantitative placental T2* is a direct measure of fetal intrauterine growth restriction

Quantitative placental T2* decreases with non-labor contractions

Quantitative placental T2* is not the same at 1.5T and 3T

Placental T2* is increased by maternal oxygen administration

Super-resolution techniques can provide 3D volumetric reconstructions of the fetal brain at < 1mm

Super-resolution techniques cannot provide 3D volumetric reconstructions of the fetal thorax.

Sulci appearing in the second trimester on fetal brain structural MRI are stable throughout life

Sulcal organization is more sensitive than surface area on fetal brain structural MRI in detecting early fetal brain abnormalities

Be highly sensitive, but not specific

Be highly specific, but not sensitive

Be uni-modal (e.g. imaging, serum or genomic)

Be highly accurate and reproducible

Umbilical artery resistance through Doppler velocimetry

Noninvasive assessments of placental gas exchange

Doppler assessments of the maternal uterine vessels

Invasive assessments of placental toxin clearance

100% of survey complete.