Pregnancy week by week

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See your developing baby

A fetal ultrasound can give you an early glimpse of your baby, but it isn't done primarily for parental thrills. A fetal ultrasound allows your health care provider to evaluate your baby's growth and development and determine how your pregnancy is progressing.

Wonder what to expect? Here's a look at real fetal ultrasound images, as well as tips for understanding the images.

1. Reddy UM, et al. Prenatal imaging: Ultrasonography and magnetic resonance imaging. Obstetrics and Gynecology. 2008:112;145.
2. Ramos GA, et al. Diagnostic evaluation of the fetal face using 3-dimensional ultrasound. Ultrasound Quarterly. 2008;24:215.
3. 3D technology. American Institute of Ultrasound in Medicine. http://www.aium.org/publications/statements.aspx. Accessed July 23, 2009.
4. Keepsake fetal imaging. American Institute of Ultrasound in Medicine. http://www.aium.org/publications/viewStatement.aspx?id=31. Accessed July 23, 2009.
5. Avoid fetal "keepsake" images, heartbeat monitors. U.S. Food and Drug Administration. http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm095508.htm. Accessed July 23, 2009.
6. Ultrasound. March of Dimes. http://www.marchofdimes.com/pnhec/159_523.asp. Accessed July 23, 2009.
7. Moore KL, et al. The Developing Human: Clinically Oriented Embryology. 8th ed. Philadelphia, Pa.: Saunders Elsevier; 2003:1.
8. Spina bifida. March of Dimes. http://www.marchofdimes.com/pnhec/4439_1224.asp. Accessed July 23, 2009.
9. Ho GWK, et al. Neck pain. In: South-Paul JE, et al. Current Diagnosis & Treatment in Family Medicine. 2nd ed. New York, N.Y.: McGraw Hill Companies. 2008;1.
10. Pediatric thighbone (femur) fracture. American Academy of Orthopaedic Surgeons. http://orthoinfo.aaos.org/topic.cfm?topic=A00424. Accessed July 24, 2009.
11. Ankle fractures. American Academy of Orthopaedic Surgeons. http://orthoinfo.aaos.org/topic.cfm?topic=A00391. Accessed July 24, 2009.
12. Harms RW (expert opinion). Mayo Clinic, Rochester, Minn. July 30, 2009.