3D ultrasound images of fetus:
This is collection of 3-Dimensional fetal images, of normal face as well as other normal parts.
This 3D ultrasound image of a fetus shows the nose, lips and shut eyes in profile. In fact the excellent resolution of the 3D fetal face images actually show the eyebrow and look carefully- even the eyelashes.
These 3D fetal ultrasound images of the face (32 weeks) are stunning in detail. Observe the cheek and other facial features. Note the pinna of the fetal ear shown in striking clarity.
The fetal fingers are also seen well.
This was a 25 week old fetus with vigourous Fetal movements which could only be captured using 4D ultrasound. The machine used was Voluson 730 system from GE. With the default settings at surface rendering, we could capture 3-D ultrasound images of the hands and Fetal face from multiple angles.
It is extremely rare for the fetus to open its eyes and to catch it during sonography. But these 3-D ultrasound images by Dr. Arun Mahajan, MD, India, show just that. The fetal eyes are imaged with the lens and possibly the iris visualized in detail in these 3-D ultrasound pictures.
This 3D ultrasound image captures the fetal foot, with the sole of the foot facing the ultrasound beam. The toes and sole are seen well in this image. The fetal face is seen in profile to the left of the 3D ultrasound image.
This fetus is captured in 3D ultrasound clenching its fist near the face. Observe the detail of the fetal fingers. Wish I could image the finger-nails also!
This is a good view of the fetal face in face on view or coronal section, with the lips and nose displayed well in this 3D ultrasound image.
This 3D ultrasound image focuses and captures the lower part of the fetal face focussing on the fetal lips. This image is courtesy of Dr. Ravi Kadasne, MD, UAE.
This fetus was captured in 3D using a special technique, the so-called fetoscopic view, to produce true to life surface rendering and color, in these 3D ultrasound images. Images are courtesy of Dr. Gunjan Puri, MD, India. The ultrasound system used is the Accuvix A 30 from Samsung/ Medison.
3 D and 4 D ultrasound scan- advantages and limitations:
Advantages in pregnancy and fetal imaging:
3D scanning means seeing the still image of the baby in uterus in 3dimensions just like seeing a statue (3D scan image) versus a picture or photograph(2D ultrasound image). 4D scanning means seeing the 3-D ultrasound image in real time- that is, with baby's or mother's movements.
1. Realistic three-dimensional views of the entire foetus or baby during early pregnancy from 6 weeks to 25 weeks. The entire baby can be seen with visualization of the legs, hands, face, head and body.
These images can be given in a CD or DVD.
2. From about 30 weeks to 36 weeks it is possible to see the fetal face very clearly (almost) just like how it would look after delivery. In addition one can see the baby's spine, feet and certain other parts like the hands.
3. Thus one can detect various anomalies like cleft lip and club feet with 3-D and 4-D ultrasound.
4. One can detect with greater precision and detail, anomalies of the baby’s spine like spina bifida and meningocele.
5. Even the patient can easily view these normal and abnormal parts of the baby and appreciate the problems as well as the beauty of the child.
In gynecology :
During ultrasound of the non-pregnant uterus and ovaries it is possible to see anomalies of uterus like septate or bicornuate uterus etc. One can better appreciate tumors like fibroid and malignant masses in greater detail.
Limitations and problems of 3-D and 4-D ultrasound scanning:
1. In fat/ obese patients or in pregnancy with less amniotic fluid the resolution (and hence quality) of the images is very poor.
2. If the baby moves too much or too fast then the resolution is poor.
3. The baby's face may not be seen if the baby lies in a difficult position such as prone position or if the baby's face is apposed to the uterine walls.
4. In the last 1 month of pregnancy it may be difficult to see the baby in 3 dimensions.
5. Lastly, 4 d scan can only be used to compliment ordinary 2-D or B- mode ultrasound scan..it has the same problems and limitations as ordinary 2-D scan. As always it cannot detect many anomalies and defects if conditions for imaging are not
Dr. Joe Antony, MD.