https://ultrasound.ie/A remarkable look at fetal development by ultrasound. Created by Ultrasound Dimensions 21 Main St.BlackrockCo. DublinIrelandTel: 01 21...Sep 6, 2021 ... Vanishing Twin || Ultrasound || Case 142 Clinical Features: - A young married female patient came with amenorrhoea for 3+ months.The 12-week ultrasound is usually an external scan. (In occasional cases, an internal — known as transvaginal — scan may be necessary if the external scan can’t produce a clear image.) You ...When it comes to choosing the right bed for your bedroom, there are several factors to consider. One of the most important decisions you’ll have to make is whether to go with a sin...Twin baby development at 12 weeks. Face. Your babies’ heads are developed and their facial features are beginning to form at this stage. Around this week, their eyes move closer together and ears move toward their final position on the side of the head. Their eyelids will also form, but still remain closed.Had first ultrasound last Wednesday and said I was 5w3d, saw only one baby measuring 5w5d. Went in today- really thought I had lost baby (bad cramping over the weekend- and loss of sporadic symptoms) found first one right away, measuring 6w3d and 120 heart-rate… then they went to see if they could find a reason for the cramps… and …We saw a baby with a heartbeat and moving around! About 10-15 minutes in, as the technician held the picture on the ultrasound, I made a joke saying “when you hold it like that it looks like there are two babies.”. I said this because I saw two ovals. She then said “actually...there are two.”.Your babies are approximately 7,5 cm (2.95 inches) from head to rump when you’re 13 weeks pregnant with twins. All your children’s organs are developed but are still maturing. At the end of this week, lines can be spotted on their fingertips. These will develop into fingerprints.Twin baby development at 12 weeks. Face. Your babies’ heads are developed and their facial features are beginning to form at this stage. Around this week, their eyes move closer together and ears move toward their final position on the side of the head. Their eyelids will also form, but still remain closed.Jul 13, 2022 ... Twin pregnancy at 7 weeks gestation! Doctor Wilshire describes the features of early twin gestation. If you would like to make an ...A stuck twin can be difficult to differentiate from monoamniotic twins when no prior ultrasound examinations have been performed on the patient. In the stuck twin scenario, the dividing membrane is “shrink-wrapped” against the fetus, making it difficult to visualize. Unlike in monoamniotic twins, the stuck twin does not move freely within ...Identical twins happen when a single embryo from one egg and one sperm divide in two. The twins may share one or have separate placentas. Identical twins are always of the same sex. Conjoined twins are extremely rare and occur when an identical twin embryo does not fully divide. The babies’ bodies are fused and may share vital …Today, ultrasound technology allows moms to confirm whether they are having single or multiple pregnancies. Nevertheless, there are a few cases when a twin goes undetected. This article pinpoints five reasons a twin may go unseen during an ultrasound.Just wondering if anyone has had an experience with having twins where one was hidden at the first ultrasound and then visible at a later one? Or anyone with "mystery fluid" in an ultrasound picture that turned out to later be a second gestational sac?I have one of these mystery sacs, so named because...Has anyone ever had their first ultrasound and only saw one baby but then a few weeks later at the following ultrasound you saw two? I’m guessing this is rare for fraternal twins since you can usually see two individual sacs but what about identical...I show you my hidden twin ultrasound and show you how to know you're having twins from a hidden twin ultrasound. Obviously, once you have a definitive scan which is a sign you're...In some cases, there may be subtle clues or symptoms that hint at the presence of a hidden twin. These can include unusually high levels of pregnancy hormones, excessive weight gain, rapid uterine growth, increased fetal movement, or inconsistent ultrasound findings.The usual prenatal ultrasounds include a dating scan somewhere between 10 and 14 weeks, and an anatomy scan between 18 and 22 weeks. These ultrasounds confirm your pregnancy, monitor the fetal heartbeat, determine the gestational age and sex, and observe general growth and development. You may also have an optional nuchal …Why Twins Go Hidden In Ultrasound? There is not one definite reason for a hidden twin ultrasound. Multiple scenarios contribute to this condition. Oftentimes it is up to your healthcare provider to look for hints as best as he can. But even then, nothing guarantees that the ultrasound will be 100% accurate.Vanishing twin syndrome is a type of miscarriage that can occur during multiple pregnancies (births involving twins or triplets). It occurs when an embryo detected during an ultrasound can’t be found on a future ultrasound. The embryo stops developing, and its tissue gets absorbed by the mother, or gestational parent, and the surviving …Hidden identical twin? a. autogenerated-a9bd8be3. May 15, 2024 at 12:07 PM. Hallo everyone. Can somebody explain to me what is under the seen baby? So the baby is up on the photo, you can see the head and the tummy but i dont understand what is down in the sac? You can not see it on tho photo but in the Ultrasound it was much …Hidden twin?! A. AGirlMommaX4. Nov 26, 2023 at 11:40 AM. I had my first ultrasound at almost 11 weeks and my bladder was extremely full. (I had a long drive and was running late so I just held my pee) The ultrasound tech said that she was having an extremely hard time seeing the baby, let alone being able to tell if there could be another …Apr 12, 2021 ... Ultrasonography is used to confirm the diagnosis of early twin pregnancy. Follow-up ultrasonography reveals the pregnancy loss (vanishing twin).Dr. Wayne Ingram answered. Specializes in Obstetrics and Gynecology. Very common: Finding twins at this stage of pregnancy is dependent on finding two gestational sacs that are very small. Created for people with ongoing healthcare needs but benefits everyone.Such “hidden twins” are more likely to occur when the twins are monochorionic (have one chorion, the outer fetal membrane) and positioned closely in their single chorionic sac. However, after 20 weeks of pregnancy, the fetuses have grown enough that a second fetus would be clearly visible on ultrasound, and it would be very unlikely that ...I’m an identical twin and my twin sister was the hidden twin. My mom swears she had to role to the side to see my sister in the ultrasound the first couple months because I always kept her in the back.Yes, first US at 6 weeks just one but then we had another at 7 to confirm viability and they found 2. Like. u. user12345678910. May 12, 2022 at 6:59 PM. So by 10 weeks they would definitely have been seen. Early US like 5/6 weeks can sometimes be missed, but my twins were clear as day at 8 weeks and impossible to miss.Keep a running list of questions you might have for your twins ultrasound appointments. The last thing you want to do is forget to ask important questions at your appointment and have to wait another month to get answers. Twins’ ultrasounds take longer. 4. Be prepared for them to take longer.I had a vaginal ultrasound at 10wks that showed only one baby. Had a suprise ultrasound at 18wks and there was another baby!! Baby A was hiding her brother (baby b) LOL Both babies have been fine so far- last ultrasound was at 20wks, last heart check was at 22wks. Im 25wks now and my next appt is in 10days. My babies are …hidden twin on ultrasound exam. angels*3. I have had an ultrasound three times now (12wks, 15wks, and 19wks) The first one was to check for a twin pregnancy, which they only saw one, and with the other two the tech never looked for a twin at all eventhough I hinted towards them into looking. I have measured atleast a month ahead since I was 12 ...In some cases, there may be subtle clues or symptoms that hint at the presence of a hidden twin. These can include unusually high levels of pregnancy hormones, excessive weight gain, rapid uterine growth, increased fetal movement, or inconsistent ultrasound findings.At each subsequent ultrasound examination the sonographer documented which twin (left or right, top or bottom) was the presenting twin. In all discordant-sex twins, the sex and presenting order of the twins on the final scan prior to delivery was documented and compared with the sex and birth order at vaginal delivery or Cesarean section. ResultsHello, This ultrasound was done abdominally at 8+2. Sonographer said there was definitely the one. ... Hidden twin, or something else? 8 replies Sparksi · 12/04/2024 18:08 Hello, This ultrasound was done abdominally at 8+2. ... At 8w my twins were clearly 2 little babies but some distance apart from each other.At a 6 week ultrasound, twins may be just as challenging to identify. However, beginning at an 8 week ultrasound, twins are a bit easier for doctors to detect. An ultrasound scan is helpful for doctors to identify the number of heartbeats within a twin pregnancy ultrasound. Early within a twin pregnancy, vanishing twin syndrome can occur. This ...3D/4D ultrasound: Three-dimensional (3D) or four-dimensional (4D) ultrasound techniques can also be employed to enhance the visualization of the hidden twin. These advanced imaging techniques provide a more detailed and realistic view of the fetus and can help identify the hidden twin more accurately.Now i may be tripping but tell me this dosent look like TWO BABIES. Like. Reply. kcalan15. The chances of them missing a twin that late is pretty slim. From what I can tell it looks like 1 baby, but maybe an ultrasound tech on here could guess better. Like. bjoelle5.Your Twin Babies at 21 Weeks Pregnant. This week, we switch from measuring your babies from crown to rump (or the top of their head to their tiny little bottoms,) to measuring them from head to toe. This is because they’ve finally stretched out fully, making measuring them correctly a lot easier. On that note, round about now, your …n. nicolapotatoes. Jan 24, 2014 at 7:23 PM. One of my twins was missed at 7 weeks 1 day. But I have to tell you that as soon as I saw that ultrasound with only one sac and baby, I didn't for one second continue to 'kid myself' that I was having twins anyway, even though I had strong early symptoms and had transferred two healthy young embryos ...It's highly unlikely. Many people see weird things in the background of their ultrasounds. Here's a cat photobomb. Highly unlikely. Like Kim said, lots of people "see" weird things in their ultrasound. It's like when people "see" things on their toast or in the clouds. I doubt they would miss a twin that far along.In this article, we will explore the possibilities and limitations of a hidden twin ultrasound at 6 weeks. First and foremost, it is crucial to understand that the early stages of pregnancy can be a bit tricky when it comes to ultrasound scans. At 6 weeks, it may be too soon to see the baby/babies on the scan.While ultrasounds may be immediately associated with pregnancy, there are other times when a physician might order this diagnostic test. Whether your health insurance will cover an...When it comes to choosing the right bed for your bedroom, size matters. Knowing the standard dimensions of a twin bed is essential for making sure your space is both comfortable an...Oct 1, 2021 ... Reply to @sober_lys #greenscreenvideo ♀️ So yes, they've missed it during the first Ultrasound #twins #twinmom #4u · @sober_lys · # ...May 31, 2002 ... With the advent of ultrasound, early loss of a member of a multiple gestation has been identified4,5 and has been described as "the vanishing ...Twins can be detected on ultrasound as early as the first trimester, usually around 10-12 weeks. During this time, the ultrasound technician will look for two gestational sacs in the uterus, which can indicate twins. After 12 weeks, it is possible to distinguish between fraternal and identical twins by looking for markers such as zygosity and ...If you’re in the market for a new bed, you might want to consider investing in a twin adjustable bed base. These innovative beds have been gaining popularity in recent years and fo...The 12-week ultrasound is usually an external scan. (In occasional cases, an internal — known as transvaginal — scan may be necessary if the external scan can’t produce a clear image.) You ...Hidden twin~is it possible? ... its twins or not since its the egg that splits in 2 and that is the 'womens' job. shadowing in the backround of an ultrasound could be a number of things not always ...Twins can be detected on ultrasound as early as the first trimester, usually around 10-12 weeks. During this time, the ultrasound technician will look for two gestational sacs in the uterus, which can indicate twins. After 12 weeks, it is possible to distinguish between fraternal and identical twins by looking for markers such as zygosity and ...A hidden twin on ultrasound commonly occurs in the first trimester of pregnancy. Because the embryo is smaller and it can be difficult to both see the baby and hear its heartbeat. Also, if babies are monochorionic or are both inside a single sac (chorion), the environment would force the fetuses to be so closely positioned that makes …OverButton. I found out I'm having Twins - Apparently had a hidden twin?! This is my 3rd pregnancy so this is not my first rodeo. I am 20 weeks as of last Wednesday. I went for an ultrasound/checkup at ~12 weeks and then they told me due to COVID and me being high risk they didn't want to have me come in for another ultrasound until 20 weeks.Determining if you have a hidden twin can be a challenging task, as it requires careful examination during ultrasound scans. However, there are certain signs and techniques that can help detect the presence of a hidden twin: 1. Early ultrasound: During the early stages of pregnancy, an ultrasound may reveal a hidden twin.veranocruz. Jun 21, 2020 at 3:20 AM. I would love twins lol I just had an ultrasound at 6 weeks an the baby was so small, so I’m going back for a clearer picture next week but I was hoping there would be a hidden twin in there has this happened to anyone? Like. 11 Similar Discussions Found. Oldest First. momma3under3. Jun 21, 2020 at 4:47 AM. In twin pregnancy, screening for trisomy 21 can be performed in the first trimester using the combined test, which includes maternal age, NT measurement and serum β-hCG and PAPP-A levels. An alternative is the combina-tion of maternal age and the NT recorded between 11. 0 and 13 6 weeks of gestation1. In case of. May 2, 2020 · My ultrasound looked the same as this at my 5 week scan. I had two sacs one looked healthy and the other a little deflated. By the time I went back for a scan at 7 weeks the other twin (sac) had been absorbed by my uterus. (missing twin syndrome) They might not have said anything to you if they think it is unhealthy. Now i may be tripping but tell me this dosent look like TWO BABIES. Like. Reply. kcalan15. The chances of them missing a twin that late is pretty slim. From what I can tell it looks like 1 baby, but maybe an ultrasound tech on here could guess better. Like. bjoelle5.An MCMA pregnancy carries the highest level of potential complications out of all twin pregnancies (with reported rates of overall perinatal mortality up to 70-80% 1 ). These include: problems related to abnormal placental vascular anastomoses. twin to twin transfusion syndrome: his particular complication only occurs in ~10-15% of MCMA ...1.5% of all twin pregnancies >2 weeks results in conjoined twins: <1% of monozygotic twin pregnancies <0.3% of all twin pregnancies; Complications. All twin pregnancies have higher fetal and neonatal mortality with overall rates of fetal mortality being 3-6 times that of a singleton pregnancy and neonatal mortality 7 times that of …Aug 2, 2013 at 7:38 PM. This is probably going to be long, so bear with me-. At 9 weeks, I had an ultrasound (due to a small amount of bleeding the previous week.) The ultrasound showed 2 gestational sacks. One was larger than the other and a tiny little peanut of a baby could be seen inside. The other was smaller and neither the tech, nor I ...With twins you will (probably) be growing very fast. It did not happen to me, but it may have had I not explicitly asked them to look for a second baby bc my betas were high. The ultrasound tech def seems to be more focused on confirming any pregnancy vs the details of it once confirmed.Six weeks is still so early my ultrasound at six weeks missed one. Like. m. miapapillon. I think it’s pretty common. First ultrasound at 7w and saw one baby one heartbeat, just had another one at 12w and tech clearly saw two babies/two heartbeats. Total shocker! Like.Feb 22, 2012 · Hello im currently 10 weeks and 5 days pregnant i had a first ultrasound at 7 weeks and 2 days, i was told i was having twins with them measuring 2 days apart , on my 10 week appointment, my doctor did another ultrasound and said she could only... The 12-week ultrasound is usually an external scan. (In occasional cases, an internal — known as transvaginal — scan may be necessary if the external scan can’t produce a clear image.) You ...Hidden twin? d. darci5. Posted 02-14-14. Any moms of multiples have a hidden twin at your first ultrasound? The tech was very quick with the ultrasound...but it seemed pretty clear there was only ...Feb 22, 2012 · Hello im currently 10 weeks and 5 days pregnant i had a first ultrasound at 7 weeks and 2 days, i was told i was having twins with them measuring 2 days apart , on my 10 week appointment, my doctor did another ultrasound and said she could only... Chorionicity Determination (Ultrasound) Optimal timing to determine chorionicity by ultrasound is in the first or 2nd trimester. ACOG/ SMFM recommend that chorionicity should be identified as early as possible. Ultrasound <13w6d may identify chorionicity in approximately 95% of cases based on membrane thickness and insertion. Dichorionic. Such “hidden twins” are more likely to occur when the twins are monochorionic (have one chorion, the outer fetal membrane) and positioned closely in their single chorionic sac. However, after 20 weeks of pregnancy, the fetuses have grown enough that a second fetus would be clearly visible on ultrasound, and it would be very unlikely that ... The names Abby and Brittany Hensel may not ring a bell at first, but you’ll recognize them immediately when you see their picture. Abby and Brittany are some of the most famous con... Possible twin pregnancy (two sacs) but only one baby on scan. Early pregnancy signs and s
Such “hidden twins” are more likely to occur when the twins are monochorionic (have one chorion, the outer fetal membrane) and positioned closely in their single chorionic sac. However, after 20 weeks of pregnancy, the fetuses have grown enough that a second fetus would be clearly visible on ultrasound, and it would be very unlikely that ... A hidden twin on ultrasound commonly occurs in the first trimester of pregnancy. Because the embryo is smaller and it can be difficult to both see the baby and hear its heartbeat. Also, if babies are monochorionic or are both inside a single sac (chorion), the environment would force the fetuses to be so closely positioned that makes …Doppler ultrasound assessment in monochorionic twins has proved helpful in diagnosing compromised fetal circulation and clinical follow-up. This exam allows your doctor to get more information about your baby’s health to accurately perform a diagnosis and optimize decision-making in the timing of delivery and follow-up of multiple pregnancies ...A hidden twin on ultrasound commonly occurs in the first trimester of pregnancy. Because the embryo is smaller and it can be difficult to both see the baby and hear its heartbeat. Also, if babies are monochorionic or are both inside a single sac (chorion), the environment would force the fetuses to be so closely positioned that makes … Ask your question. can a vanishing twin actually be hidden? i am 35 have and have 10 living children, 4 miscarriages . 6 week sonogram clearly showed 1 baby. 8 week sonogram showed 1 baby with heartbeat and another sac partially hidden behind baby. it definitely wasn't eas: Yes: It sounds like a retained dead twin that was small and not so muc. Seeing twins at 6 weeks is definitely possible. The exact time twins can be detected depends on the type of twins, for example, if they’re identical (from one egg) or not. At this stage, the presence of two yolk sacs can be seen, and separate heartbeats distinguished. An ultrasound with twins will show the babies as two dark spots in the uterus.Identical twins happen when a single embryo from one egg and one sperm divide in two. The twins may share one or have separate placentas. Identical twins are always of the same sex. Conjoined twins are extremely rare and occur when an identical twin embryo does not fully divide. The babies’ bodies are fused and may share vital organs.A liver ultrasound is used to examine the liver if a patient is experiencing pain, swelling or other abnormalities, notes Two Views. It can be used to detect cysts, obstructions or...A full bladder is needed during an ultrasound because it helps to provide the best image, as stated by the National Institutes of Health. When the bladder is full, the uterus is mo...Ultrasound has a critical role in the management of twin pregnancies (and multiple pregnancies in general) in all three trimesters. In twin pregnancies, even if they present late for prenatal care, the assessment of chorionicity and amnionicity can and should be attempted. Usually, this attempt will be successful.Oct 30, 2020 · What you can expect to see. Have a nice day Photo/Shutterstock. A 7-week ultrasound showing crown rump length of baby, which helps figure out the age of the fetus. Surrounding the fetus is the ... ID: 3463746This woman was attending an ultrasound scan when her nurse revealed she was in fact pregnant with twins.Tour company owner Jennifer Kistler-McCoy,...At each subsequent ultrasound examination the sonographer documented which twin (left or right, top or bottom) was the presenting twin. In all discordant-sex twins, the sex and presenting order of the twins on the final scan prior to delivery was documented and compared with the sex and birth order at vaginal delivery or Cesarean section. ResultsTwo ways to confirm a twin pregnancy are through ultrasound and fetal Doppler monitor. Two Babies Are Visible on an Ultrasound Early Ultrasound Image Shows Twins.MnJ15. Feb 23, 2018 at 7:34 AM. My mom didn't know she was pregnant with twins until she was 20 weeks. Had been told by two doctors that there was just one in there until her 20 week ultrasound, and then surprise! But this was 1991, and …In uncomplicated dichorionic twin pregnancy, ultrasound imaging should be performed in the first trimester, again at around 20 weeks' gestation (second-trimester anomaly scan), and every 4 weeks thereafter (unless a complication is detected which might require more frequent scans) (Figure 2) 1. In uncomplicated monochorionic twins, an ...1.5% of all twin pregnancies >2 weeks results in conjoined twins: <1% of monozygotic twin pregnancies <0.3% of all twin pregnancies; Complications. All twin pregnancies have higher fetal and neonatal mortality with overall rates of fetal mortality being 3-6 times that of a singleton pregnancy and neonatal mortality 7 times that of …Most hidden twins at the time of delivery are seen in patients who had little or no prenatal care, but there have been documented cases of women who had prenatal care and still delivered a hidden twin.” ... Is it possible for ultrasound to misread twins? Misread Ultrasound Involving Twins Results in One Death and One Injured Child. $1,800,000 ...n. nicolapotatoes. Jan 24, 2014 at 7:23 PM. One of my twins was missed at 7 weeks 1 day. But I have to tell you that as soon as I saw that ultrasound with only one sac and baby, I didn't for one second continue to 'kid myself' that I was having twins anyway, even though I had strong early symptoms and had transferred two healthy young embryos ...You’re nine weeks pregnant with twins. Nine weeks in, and probably starting to put on a little bit of weight. That’s completely normal, and something that happens when you’re 9 weeks pregnant with twins. Expect to be putting on around 5 or 6 pounds by the time you’ve finished the first trimester. Still, there’s a lot more to pay ...Our twins at 8 weeks and 5 days! At 2:30 you can see a little bit of movement from baby B!Had first ultrasound last Wednesday and said I was 5w3d, saw only one baby measuring 5w5d. Went in today- really thought I had lost baby (bad cramping over the weekend- and loss of sporadic symptoms) found first one right away, measuring 6w3d and 120 heart-rate… then they went to see if they could find a reason for the cramps… and …Hidden twin? d. darci5. Posted 02-14-14. Any moms of multiples have a hidden twin at your first ultrasound? The tech was very quick with the ultrasound...but it seemed pretty clear there was only ...This was an 11 week brief ultrasound with a portable machine, I’ve just not noticed the spot behind baby, does it look like shadow of a second baby? It does not look like placenta to me and I was not told I have an anterior placenta. No rude comments I know it rare to be missed but it does happen.Ultrasound scans are usually done through the abdomen, but early in pregnancy, they’ll be done through the vagina. A basic ultrasound takes about 15 to 20 minutes. A more detailed twin ultrasound scan can take anywhere from 30 to 90 minutes or more. All twins can be detected after week 6+0.My ultrasound looked the same as this at my 5 week scan. I had two sacs one looked healthy and the other a little deflated. By the time I went back for a scan at 7 weeks the other twin (sac) had been absorbed by my uterus. (missing twin syndrome) They might not have said anything to you if they think it is unhealthy.According to BabyMed, the numbers on an ultrasound provide information about whether the baby, or fetus, has grown properly and also whether the growth of the baby is within the ty...Have you ever wondered if you have a doppelgänger out there? Thanks to advancements in face recognition technology, it is now possible to find your twin with just a simple click. O...1.5% of all twin pregnancies >2 weeks results in conjoined twins: <1% of monozygotic twin pregnancies <0.3% of all twin pregnancies; Complications. All twin pregnancies have higher fetal and neonatal mortality with overall rates of fetal mortality being 3-6 times that of a singleton pregnancy and neonatal mortality 7 times that of …Fraternal twins depends on how many eggs the female releases. Has nothing to do with males. Like. 1. 19sarahk86. Jan 8, 2018 at 3:52 PM. There’s only 1. If there was 2, then second one would look like the first one, and there’s only the 1 that looks like that. The other is either a shadow or the placenta or something.I also have two girls - 3 and 2 years old, so this is not my first time at the. "rodeo." I found out I was pregnant at 3 wks. Before the stick even. dried I knew this pregnancy was different - maybe twins. Since then, I have. gained 12 lbs. (I am 5'9", now 145 lbs, and only gained 23 lbs with each. of my previous pregnancies).These images reveal all the intricate details of their growth from a collection of cells to a full-term newborn. Read on to learn about twin fetal development and see some incredible twin ...Jun 21, 2021 · A hidden twin usually refers to a twin found in a later U/S in the same gestational sac which would be identical twins-one egg that split, usually one placenta 70% of the time. Clomid does not increase your chances of producing identical twins or the possibility of an egg splitting where the term “hidden twin” comes from. Aug 2, 2013 at 7:38 PM. This is probably going to be long, so bear with me-. At 9 weeks, I had an ultrasound (due to a small amount of bleeding the previous week.) The ultrasound showed 2 gestational sacks. One was larger than the other and a tiny little peanut of a baby could be seen inside. The other was smaller and neither the tech, nor I ...Dec 4, 2012 · Baby B was hidden behind baby A. We found out at 20 weeks we were having boy/girl twins :-). They are now 3 1/2 months old and healthy as can be THANK GOD. a. attorneymom. Dec 4, 2012 at 11:10 AM. @mcgeelisha, My 6 week ultrasound showed one baby. We found out about the second at the 18 week gender scan. In uncomplicated monochorionic twins, an ultrasound scan should be performed in the first trimester. There should then be scans every 2 weeks from 16 weeks onwards, as timely detection of TTTS and TAPS has been shown to improve perinatal outcome (Figure 3) 19, 20 (EVIDENCE LEVEL: 4). Twin Ultrasound at 12 Weeks. A baby at 12 weeks is basically fully developed, and now just has to grow. That mea