Home

Online Teaching Files

Literature Search and Reviews

Bulletin Board

Reference Charts and Tables

Recommended Links





 

RELATION BETWEEN MEAN SAC DIAMETER, MENSTRUAL AGE, AND HUMAN CHORIONIC GONADOTROPIN (First IRP)

 

MEAN GESTATIONAL SAC DIAMETER (MM)

MENSTRUAL AGE (WKS)

PREDICTED HCG (IU/L), RANGE = 95% PREDICTION INTERVAL

3

4.6

1,710 (1,050-2,800)

4

4.7

2,320 (1,440-3,760)

5

4.9

3,100 (1,940-4,980)

6

5.1

4,090 (2,580-6,530)

7

5.3

5,340 (3,400-8,450)

8

5.4

6,880 (4,420-10,810)

9

5.6

8,770 (5,680-13,660)

10

5.7

11,040 (7,220-17,050)

11

5.9

13,730 (9,050-21,0408)

12

6.0

16,870 (11,230-25,640)

13

6.1

20,480 (13,750-30,880)

14

6.3

24,560 (16,650-36,750)

15

6.4

29,110 (19,910-43,220)

16

6.6

34,100 (23,530-50,210)

17

6.7

39,460 (27,470-57,640)

18

6.9

45,120 (31,700-65,380)

19

7.0

50,970 (36,130-73,280)

20

7.1

56,900 (40,700-81,150)

21

7.3

62,760 (45,300-88,790)

22

7.4

68,390 (49,810-95,990)

23

7.6

73,640 (54,120-102,540)

24

7.7

78,350 (58,100-108,230)

25

7.9

82,370 (61,640-112,870)

26

8.0

85,560 (64,600-116,310)

27

8.3

87,820 (66,900-118,420)

28

8.4

89,050 (68,460-119,130)

29

8.6

89,230 (69,220-118,420)

30

8.7

88,340 (69,150-116,310)

 

From: Daya S, Woods S, Ward S, Lappalainen R, Caco C, J Clin Ultrasound 19:139-142, 1991

Predicted HCG from MSD is from Nyberg D, et al, Radiology 158;393-396, 1986

(HCG calibrated against the First International Reference Preparation)

This is a clickable imagemap, for hyperlinks, see text below.

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

Home | Teaching Files | Literature | Bulletin Board