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Ultrasound in pregnancy (1) (2)


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Ultrasound in pregnancy (1) (2)

  1. 1. Ultrasound in Pregnancy
  2. 2. Definition <ul><li>The most well known application of ultrasound is its use in  sonography  to produce pictures of fetuses in the human womb. </li></ul>
  3. 3. Types of Ultrasound <ul><li>Conventional ultrasound displays the images in thin, flat sections of the body. Advancements in ultrasound technology include three-dimensional (3-D) ultrasound that formats the sound wave data into 3-D images. Four-dimensional (4-D) ultrasound is 3-D ultrasound in motion. </li></ul>
  4. 4. Doppler Ultrasound <ul><li>Doppler ultrasound   is a special ultrasound technique that evaluates blood flow through a blood vessel, including the body's major arteries and veins in the abdomen, arms, legs and neck. </li></ul><ul><li>There are three types of Doppler ultrasound: </li></ul><ul><li>Color Dopple r  uses a computer to convert Doppler measurements into an array of colors to visualize the speed and direction of blood flow through a blood vessel. </li></ul><ul><li>Power Doppler   is a newer technique that is more sensitive than color Doppler and capable of providing greater detail of blood flow, especially when blood flow is little or minimal. Power Doppler, however, does not help the radiologist determine the direction of blood flow, which may be important in some situations. </li></ul><ul><li>Spectral Doppler. Instead of displaying Doppler measurements visually, Spectral Doppler displays blood flow measurements graphically, in terms of the distance traveled per unit of time. </li></ul>
  5. 5. Ultrasound in the First Trimester
  6. 6. Advantages of Using Ultrasound in First Trimestre <ul><li>Check your baby’s heartbeat </li></ul><ul><li>Show single or multiple pregnancies </li></ul><ul><li>Date your pregnancy by measuring the baby and measure the baby’s growth over a several scans </li></ul><ul><li>Check for causes of bleeding </li></ul><ul><li>Check for ectopic pregnancy </li></ul><ul><li>Examine the baby and its organs </li></ul><ul><li>Potentially reveal the baby’s gende </li></ul>
  7. 7. Five Week Pregnant Ultrasound <ul><li>About one week after your missed period, your pregnancy will be visible on ultrasound. At this point, it is a small fluid collection called a gestational sac. It is just 2/10 of an inch in diameter and lies within the lining of the uterus known as the deciduas. (See Below.) Even though the baby is still too small to see, this first visual proof of the developing pregnancy is very exciting. </li></ul>
  8. 8. Six Week Pregnant Ultrasound <ul><li>A week later, the baby is finally visible on ultrasound. (See Below.) At this point, it appears as a tiny oval blip approximately a tenth of an inch in length (about the width of a sunflower seed). The regular flicker of a heartbeat is first visible on the screen .  </li></ul><ul><li>  </li></ul>
  9. 9. Nine Weeks Pregnant Ultrasound <ul><li>At nine weeks, your baby will be 9/10 of an inch in length–about the size of a grape. The baby is also quite active at this stage, but you won't be able to feel any movements for at least 10 more weeks .  </li></ul>
  10. 10. Ten Weeks Pregnant Ultrasound <ul><li>By week 10, all of your baby's vital organs have been formed and are starting to work together. </li></ul><ul><li>As external changes such as the separation of fingers and toes and the disappearance of the tail takes place, internal developments are taking place too. Tooth buds form inside the mouth, and if you're having a boy, his testes will begin producing the male hormone testosterone. </li></ul><ul><li>Congenital abnormalities are unlikely to develop after week 10. This also marks the end of the embryonic period — in general, the embryo now has a distinctly human appearance and starting next week your baby will officially be considered a fetus </li></ul>
  11. 11. Eleven Week Pregnant Ultrasound <ul><li>Currently, at 17 weeks pregnant, your baby is approximately 4.5″ – 5.5″ long, and weighs in at 4-5 ounces. </li></ul>
  12. 12. Twelve Week Pregnant Ultrasound <ul><li>Your baby's brain continues to develop, and tiny fingernails and toenails start to form. Vocal cords are formed this week, which is the last of your first trimester. </li></ul><ul><li>Your baby's kidneys are functioning! After swallowing amniotic fluid, your baby will now be able to pass it out of the body as urine. And the intestines will make their way into the abdomen, since there is room for them now. </li></ul>
  13. 13. Thirteen Weeks Pregnant Ultrasound <ul><li>By 13 weeks, the baby is three inches long, measured from the top of the head to the bottom of the rump. (About the size of a small peach.) This represents a 30-fold increase in length in the seven-week interval from six to 13 weeks gestation . </li></ul><ul><li>  </li></ul>
  14. 14. Fourteen Week Pregnant Ultrasound <ul><li>It’s a Boy </li></ul>
  15. 15. Fourteen Weeks Pregnant Ultrasound <ul><li>It’s a girl </li></ul>
  16. 16. Sixteen Weeks Pregnant Ultrasound <ul><li>Your baby now weighs about 3.9 ounces (110 grams) and measures about 4.7 inches (12 cm) in length from crown to rump. Your baby can hold his or her head erect, and the development of facial muscles allows for a variety of expressions, such as squinting and frowning. </li></ul>
  17. 17. Twenty Weeks Pregnant Ultrasound <ul><li>You're halfway there! Twenty weeks into your pregnancy, your baby has grown significantly from that first dividing cell and now weighs about 11 ounces (312 grams) and measures about 6.3 inches (16 cm) from crown to rump. The baby is taking up increasing room in your uterus, and continued growth will put pressure on your lungs, stomach, bladder, and kidneys. </li></ul><ul><li>Under the vernix caseosa (a protective, waxy coating), your baby's skin is thickening and developing layers. Hair and nail growth continue. </li></ul>
  18. 18. Thirty-two Weeks Pregnant Ultrasound <ul><li>The final touches are being placed on your baby masterpiece. Eyelashes, eyebrows, and the hair on your baby's head are evident. The lanug o hair that has covered your baby since the beginning of the second trimester is falling off, although some may remain on the shoulders and back at birth. </li></ul><ul><li>At about 4 pounds (1,800 grams) and 11.4 inches (29 cm) from crown to rump, your baby would </li></ul><ul><li>have an excellent chance of survival outside the womb if you delivered now . </li></ul>
  19. 19. Thirty-six Weeks Pregnant Ultrasound <ul><li>The wrinkly, tiny fetus you may have seen on earlier ultrasounds has given way to an almost plump baby. There is fat on your baby’s cheeks, and powerful sucking muscles also contribute to your baby's full face. Your baby now weighs a little under 6 pounds (2,721 grams). </li></ul><ul><li>The bones that make up your baby’s skull can move relative to one another and overlap each other while your baby’s head is inside your pelvis. This phenomenon is called molding, and it helps the baby pass through the birth canal. Don't be surprised if your baby arrives with a pointy or misshapen head! After a few hours or days, your baby's head will be back to a rounded shape . </li></ul>
  20. 20. <ul><li>References </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li>http:// </li></ul><ul><li> </li></ul>