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OB Tables
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LOGIQ 7/LOGIQ 7 Pro Advanced Reference Manual
Direction 5116269-100 Rev. 2
Table 3-51: CRL: Hansmann (Fetal Age)
Ultrasound Diagnosis in Obstetrics & Gynecology, 438-439, 1985
Unit: CRL (mm); Age (Weeks/Days); 2SD (mm [Known LMP] or day [Unknown LMP])
CRL
Age
2SD
CRL
Age
2SD
CRL
Age
2SD
CRL
Age
2SD
Known LMP
<13
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
n/a
7w4d
7w5d
8w0d
8w1d
8w2d
8w3d
8w4d
8w5d
8w6d
9w0d
9w1d
9w2d
9w3d
9w4d
9w4d
9w5d
9w6d
10w0d
10w0d
10w1d
10w2d
10w3d
10w3d
10w4d
10w5d
10w5d
10w6d
10w6d
11w0d
11w1d
11w1d
11w2d
11w2d
11w3d
11w3d
11w4d
11w4d
11w5d
11w5d
11w6d
11w6d
——
0
0
0
0
0
0
7
7
8
8
10
10
11
11
11
11
11
12
12
12
12
12
13
13
13
13
13
13
14
14
14
14
14
14
15
15
15
15
15
15
15
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
12w0d
12w1d
12w1d
12w2d
12w2d
12w3d
12w3d
12w4d
12w4d
12w5d
12w5d
12w6d
12w6d
13w0d
13w1d
13w1d
13w2d
13w3d
13w3d
13w4d
13w4d
13w5d
13w5d
13w6d
13w6d
14w0d
14w0d
14w1d
14w1d
14w2d
14w2d
14w3d
14w3d
14w4d
14w4d
14w5d
14w6d
14w6d
15w0d
15w0d
15w1d
15w2d
15
16
16
16
16
16
16
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
13
13
13
13
13
13
13
13
13
13
12
12
12
12
12
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
15w3d
15w3d
15w4d
15w4d
15w5d
15w5d
15w6d
15w6d
16w0d
16w1d
16w2d
16w2d
16w3d
16w3d
16w4d
16w4d
16w5d
16w5d
16w6d
17w0d
17w1d
17w2d
17w2d
17w3d
17w3d
17w4d
17w5d
17w5d
17w6d
18w0d
18w1d
18w1d
18w2d
18w2d
18w3d
18w4d
18w4d
18w5d
18w6d
19w0d
19w1d
19w1d
11
11
11
11
11
10
10
10
10
10
10
10
10
10
10
11
11
11
11
11
12
12
12
12
12
13
13
13
13
13
14
14
14
14
15
15
15
15
15
15
15
15
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
>175
19w2d
19w3d
19w4d
19w4d
19w5d
19w5d
19w6d
20w0d
20w1d
20w2d
20w2d
20w3d
20w4d
20w4d
20w5d
20w5d
20w6d
21w0d
21w0d
21w1d
21w1d
21w2d
21w3d
21w3d
21w4d
21w4d
21w5d
21w6d
21w6d
22w0d
22w0d
22w1d
22w1d
22w2d
22w2d
22w3d
22w3d
22w4d
n/a
15
15
15
16
16
16
16
16
17
17
17
17
17
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
——