How Early Can Trisomy 18 Be Detected On Ultrasound?
Ultrasound can detect signs of Trisomy 18 as early as 11 to 14 weeks into pregnancy, typically during the first-trimester screening scan. However, detection rates at this stage are not perfect, and many cases are identified later around the 18- to 20-week anatomy scan. The accuracy depends heavily on the specific ultrasound markers present and … Read more