Output Indices in 2D versus 3D/4D Ultrasonography in Fetal Craniocerebral Anomalies

Osman, Mustafa. A. A; Shehata, Mohamed S. A.; Abd-Elaziz, Khaled M. S.; Rashad, Mohamed H.

doi:10.21608/mjmr.2022.221604

Output Indices in 2D versus 3D/4D Ultrasonography in Fetal Craniocerebral Anomalies

Document Type : Original Article

Authors

¹ Department of Obstetrics and Gynecology, El-Hussein University Hospital, Al-Azhar University

² Department of Radiology, El-Hussein University Hospital, Al-Azhar University, Cairo, Egypt

³ Department of Pediatrics, El-Hussein University Hospital, Al-Azhar University, Cairo, Egypt

⁴ Department of Neurology, El-Hussein University Hospital, Al-Azhar University, Cairo, Egypt

10.21608/mjmr.2022.221604

Abstract

Objective: to compare the acoustic output of conventional two-dimensional US and 3D/4D US in a
group of pregnant women with fetal craniofacial malformations. Method: Fifty women with
suspected craniocerebral anomalies during routine prenatal ultrasound examination are included in the
study. For ultrasound assessment, we used a Doppler ultrasound system. Subsequently, 3D/4D images
were obtained using a suitable probe. During both examinations, changes in thermal index (TI) and
mechanical index (MI) were recorded. Results: Comparison between TI and MI of the different
ultrasound techniques revealed no statistically significant differences. The reported TI for the studied
modalities was 0.277 ± 0.01, 0.271 ± 0.008 and 0.249 ± 0.01 (p=0.43) while MI was 1.12 ± 0.012,
0.87 ± 0.014 and 1.19 ± 0.37 (p=11) for B mode, 3D and 4D techniques respectively. Conclusion:
3D/4D ultrasound imaging is comparable to 2D imaging regarding thermal and mechanical indexes in
women with fetal craniocerebral anomalies.

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