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Related Experiment Video

Updated: May 8, 2026

Murine Fetal Echocardiography
08:04

Murine Fetal Echocardiography

Published on: February 15, 2013

Effect of B-mode optimization techniques on fetal bowel echogenicity using computerized image analysis.

Rasha Karayanni-Ammuri1, Gonen Ohel, Shimon Degani

  • 1Department of Obstetrics and Gynecology, Emek Medical Center, Afula, Israel. srashak@gmail.com

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
|August 28, 2013
PubMed
Summary
This summary is machine-generated.

Harmonic imaging in early second-trimester fetal ultrasound significantly increases bowel brightness. Other presets like compound resolution and coded excitation imaging decrease fetal bowel echogenicity.

Keywords:
B-mode optimizationfetal bowel echogenicityimaging preset

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Area of Science:

  • Medical imaging
  • Fetal ultrasonography
  • Gastrointestinal development

Background:

  • Fetal bowel echogenicity assessment is crucial for prenatal diagnosis.
  • Standardized B-mode presets are needed for reproducible fetal ultrasound measurements.
  • Understanding the impact of different imaging techniques on fetal bowel visualization is essential.

Purpose of the Study:

  • To compare measurable parameters for normal fetal bowel echogenicity.
  • To evaluate predefined B-mode scanning presets for fetal bowel imaging.
  • To establish quantitative metrics for fetal bowel visualization.

Main Methods:

  • Forty fetuses at 14–17 weeks and 40 at 21–25 weeks underwent transabdominal ultrasound.
  • Various B-mode presets (harmonic, compound resolution, speckle reduction, coded excitation) were tested.
  • Custom software analyzed grayscale pixel brightness in the fetal bowel region of interest.

Main Results:

  • In 14–17-week scans, harmonic imaging significantly increased mean bowel brightness (P < .01).
  • Compound resolution and coded excitation imaging significantly decreased mean brightness in early scans.
  • No significant differences in mean bowel brightness were observed in 21–25-week scans across presets.

Conclusions:

  • Transabdominal harmonic imaging may enhance fetal bowel echogenicity in the early second trimester.
  • Compound resolution and coded excitation imaging negatively impact fetal bowel echogenicity.
  • Imaging preset selection influences fetal bowel visualization, particularly in early gestation.