SPR 2019 Fetal Course SAM Session - Session 11 Saturday, September 14th Question Title * 1. The primary safety concern of the large static (1.5T or 3T) magnetic field is: Claustrophobia Projectile injury Tissue heating Nerve stimulation in the fetus Question Title * 2. If an MRI pulse sequence is run at the maximum regulatory SAR limit: 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 Question Title * 3. Which is false about placental imaging? 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 Question Title * 4. Which is false about fetal MRI? 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 Question Title * 5. To become clinically meaningful, biomarkers should: 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 Question Title * 6. The ideal biomarker(s) to assess placental health and dysfunction should include: 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 Question Title * 7. Please enter your full name. Question Title * 8. Please enter your email address. 100% of survey complete. SUBMIT