Fetal Abnormalities: Evaluation with Real-time–Processible Three-dimensional US—Preliminary Report1
Kazunori Baba, MD, PhD,
Takashi Okai, MD, PhD,
Shiro Kozuma, MD, PhD and
Yuji Taketani, MD, PhD
1 From the Departments of Biomedical Engineering (K.B.) and Obstetrics and Gynecology (S.K., Y.T.), Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; and the Department of Obstetrics and Gynecology, Aiiku Hospital, Tokyo, Japan (T.O.). Received August 28, 1997; revision requested October 17; final revision received July 24, 1998; accepted October 14. Address reprint requests to K.B.
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Figure 1a. Case 2. (a) A 2D US image shows opening of the mouth and micrognathia (arrow) in a fetus at 34 weeks gestation. (b) Real-time–processible 3D US image of the same fetus shows these findings more clearly and also shows dysplastic ear (arrow).
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Figure 1b. Case 2. (a) A 2D US image shows opening of the mouth and micrognathia (arrow) in a fetus at 34 weeks gestation. (b) Real-time–processible 3D US image of the same fetus shows these findings more clearly and also shows dysplastic ear (arrow).
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Figure 2a. Case 4. (a) Longitudinal view of the profile of the fetus with holoprosencephaly shows proboscis (arrow) at 29 weeks gestation. (b) Real-time–processible 3D US facial image of the same fetus shows proboscis (arrow) and cyclopia (arrowhead) more clearly.
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Figure 2b. Case 4. (a) Longitudinal view of the profile of the fetus with holoprosencephaly shows proboscis (arrow) at 29 weeks gestation. (b) Real-time–processible 3D US facial image of the same fetus shows proboscis (arrow) and cyclopia (arrowhead) more clearly.
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Figure 3. Case 3. Real-time–processible 3D US image obtained at 32 weeks gestation in a fetus suspected of having a chromosomal abnormality shows overlapping index finger (arrow) and severe flexion of the right wrist (arrowhead). Although these abnormalities could be detected or suspected at 2D US, real-time–processible 3D US showed the abnormalities more clearly.
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Figure 4. Case 8. Real-time–processible 3D US image of a fetus with short-limb dysplasia at 28 weeks gestation shows clubfoot (arrow). Clubfoot, which was virtually undetectable with 2D US, was detected only with real-time–processible 3D US. A = fetal abdomen, C = umbilical cord.
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Figure 5. Case 4. Real-time–processible 3D US image of omphalocele (arrow) clearly shows the extent of herniation.
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Figure 6. Case 6. Real-time–processible 3D US image of head and forearm of the fetus with massive subcutaneous edema at 22 weeks gestation. Arrows indicate skin surface over scalp.
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Figure 7. Case 9. Real-time–processible 3D US image of a fetus with short-limb dysplasia at 25 weeks gestation was obtained by setting the opacity level low and shows short and curved femur (F). V = vertebrae.
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Figure 8. Case 10. Real-time–processible 3D US image of the spine of a fetus at 35 weeks gestation shows spina bifida (arrow and below).
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Figure 9. Case 12. Real-time–processible 3D US intraabdominal image obtained in the fetus with ascites (arrows) at 30 weeks gestation. A = abdominal wall, B = bowel, L = liver, U = urinary bladder.
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Copyright © 1999 by the Radiological Society of North America.
