OBS & GYNAE - Ch. 16 Assess. of Foetal Age and Size in the Second and Third Trimester

Question 1

AXIAL RESOLUTION

Answer 1

MINIMUM DISTANCE BETWEEN TWO BRIGHT ECHOES ALONG THE PATH OF THE ULTRASOUND BEAM, WHICH IS HALF THE SPATIAL PULSE LENGTH

Question 2

CEPHALIC INDEX (CI)

Answer 2

RATIO OF THE BPD (BIPARIETAL DIAMETER) TO THE OFD (OCCIPITO-FRONTAL DIAMETER)

Question 3

LATERAL RESOLUTION

Answer 3

MINIMUM DISTANCE BETWEEN TWO BRIGHT ECHOES AT RIGHT ANGLES (PERPENDICULAR) TO THE ULTRASOUND BEAM PATH DIRECTLY RELATED TO THE BEAM WIDTH AND FOCAL ZONE

Question 4

MARCROSOMIA

Answer 4

FOETUS OVER 4, 000 GRAMS (8 POUNDS, 13 OUNCES)

Question 5

OCCIPITO-FRONTAL DIAMETER (OFD)

Answer 5

MEASUREMENT FROM FRONTAL TO THE OCCIPITAL OBTAINED AT THE SAME LEVEL AS THE BPD

Question 6

PREDICTIVE VALUE

Answer 6

PRECISION RATE OR THE PROBABILITY OF DISEASE