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Optimizing radiation dose and image quality in neonatal mobile radiography

Takahiko Maeda1,2, Makoto Hara1, Hiroyuki Yamasaki1

  • 1Department of Radiology, Hyogo Prefectural Kobe Children's Hospital, 1-6-7, Minami, Kobe, Hygo 650-0047, Japan.

Radiation Protection Dosimetry
|July 18, 2025
PubMed

Insights

Optimizing radiation dose for neonatal radiography is crucial. This study found 65 kVp and 1.2 mAs best balances low radiation exposure with high image quality for infant X-rays.

Area of Science:

  • Pediatric Radiology
  • Medical Imaging Physics

Background:

  • Children exhibit heightened sensitivity to ionizing radiation compared to adults.
  • Accurate diagnosis in neonates necessitates a careful balance between minimizing radiation dose and preserving essential image quality (IQ).

Purpose of the Study:

  • To determine optimal radiation dose parameters for neonatal mobile radiography of the chest and abdomen.
  • To evaluate the trade-off between entrance surface dose and image quality indices in neonatal radiography.

Main Methods:

  • Systematic evaluation of various exposure parameters on neonatal and acrylic phantoms.
  • Assessment of entrance surface dose and image quality (IQ) indices.
  • Visual and physical evaluations to identify optimal settings.

Main Results:

  • The combination of 65 kilovolts peak (kVp) and 1.2 milliampere-seconds (mAs) was identified as optimal.
  • These parameters achieved the best balance between reduced radiation exposure and maintained high image quality for neonates.

Conclusions:

  • The findings provide critical insights for optimizing radiographic conditions in neonatal care.
  • Implementing these parameters can enhance diagnostic accuracy while minimizing radiation risks for infants.
  • This research supports safer and more effective radiological practices in neonatal intensive care units.

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