Fetal Doppler Assessment (Noncardiac)
TABLE D-1 Resistance Index of the Uterine Artery Gestation (wk) 5th Percentile 50th Percentile 95th Percentile 18 0.222 0.447 0.659 19 0.204 0.429 0.641 20 0.194 0.419 0.630 21 0.186…
ULTRASONOGRAPHY
Magnetic Resonance Imaging of the Female Pelvis: Representative Protocols
TABLE J-1 Pelvic Mass Magnetic Resonance Imaging Protocol Sequences • Sag T2 Fast Spin Echo (FSE) • Free breathing • May need to try phase S/I and A/P to see…
Fetal Cardiac Measurements and Doppler Assessment
TABLE F-1 Mitral and Tricuspid Valve E/A Ratios Gestation (wk) MITRAL VALVE E/A RATIO TRICUSPID VALVE E/A RATIO 2.5th Percentile 50th Percentile 97.5th Percentile 2.5th Percentile 50th Percentile 97.5th Percentile…
Estimated Radiation Exposure to the Fetus During Radiographic Examinations
TABLE I-1 Estimated Fetal Radiation Dose From Abdominopelvic Radiography * PROCEDURE TYPE (# OF CASES) FETAL DOSE (mGy) RANGE OF GESTATIONAL AGE Range of Dose Mean Weeks + Days Abdominal…
Medications and Reported Associated Malformations
TABLE H-1 Selected Medications and Reported Associated Malformations * Drug Malformation(s) Acetazolamide Sacrococcygeal teratoma Acyclovir CDH, neural tube defect, cleft lip, clubfoot, transposition Alprazolam Umbilical hernia, clubfoot Albuterol Cleft palate,…
Sonographic Detection of Chromosomal Abnormalities
TABLE G-1 Distribution of Nuchal Translucency Measurements by Crown-Rump Length Crown-Rump Length (mm) Gestational Age (wk) N Mean (mm) Median (mm) Standard Deviation (mm) PERCENTILE CUTPOINT (mm) PERCENTILE CUTPOINT (MoM)…
Doppler of the Middle Cerebral Artery to Assess Fetal Anemia
TABLE E-1 Threshold of Peak Velocity of Systolic Blood Flow in the Middle Cerebral Artery Above Which Mild, Moderate, and Severe Anemia Occurs Gestation (wk) THRESHOLD OF PEAK VELOCITY OF…
Measurements for Amniotic Fluid Assessment
TABLE C-1 Amniotic Fluid Index Values in Normal Pregnancy Gestational age (wk) AMNIOTIC FLUID INDEX (mm) BY PERCENTILE 3rd 5th 50th 95th 97th 16 73 79 121 185 201 17…
Measurements Used in Assessing Fetal Weight, Growth, and Body Proportions
TABLE B-1 Equations for the Estimation of Fetal Weight Source Year Equation AC Equations Campbell and Wilkin * 1975 Ln EFW = −4.564 + 0.282 (AC) − 0.00331 (AC) 2…
Sonographic Evaluation of the Fetal Heart
Outline Fetal Cardiovascular Physiology, 372 Ultrasound Equipment, 372 First and Early Second Trimester Fetal Cardiac Evaluation, 372 Cardiac Examination, 372 Effectiveness of Early Gestation Cardiovascular Evaluation, 376 Second Trimester Fetal…
