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Fetal Ear Length (mm) Percentiles by GA

 

Percentile
Gestational Age (weeks)
10th
50th
90th
14
6
7
9
15
7
9
10
16
9
10
11
17
10
11
13
18
11
13
14
19
13
14
15
20
14
15
17
21
15
17
18
22
16
18
20
23
17
19
21
24
19
20
22
25
20
22
24
26
21
23
25
27
22
24
26
28
23
25
27
29
24
26
29
30
25
27
30
31
26
28
31
32
27
29
32
33
27
30
33
34
28
31
34
35
29
32
35
36
30
33
36
37
30
33
36
38
31
34
37
39
31
34
38
40
32
35
38
41
32
35
39

From: Yeo L, Guzman ER, Ananth CV, Walters C, Day-Salvatore D, Vintzileos AM Prenatal detection of fetal aneuploidy by sonographic ear length. J Ultrasound Med 22:565-76, 2003

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Ultrasound Educational Press     Go Top
Peter W. Callen, M.D.
Professor of Radiology, Obstetrics, Gynecology and Reproductive Science
University of California Medical Center, San Francisco, California

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