ArticleMagnetic resonance in medicine2022
Evaluation of specific absorption rate and heating in children exposed to a 7T MRI head coil.
Article in Magnetic resonance in medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Impact of transducer position on BMedical physics · 2026Article
- MRI in Febrile Children: Temperature Changes in Sedated or Anesthetized Pediatric Patients With Initial Body Temperature ≥ 38.5°C.Paediatric anaesthesia · 2026Article
- Intraoperative 3D quantitative magnetic resonance imaging in paediatric brain tumour surgery.PloS one · 2026Article
- A size-adaptive RF coil for MRI of the pediatric human brain at 7 T.Magnetic resonance in medicine · 2025Article
- Precision functional imaging in infants using multi-echo fMRI at 7T.bioRxiv : the preprint server for biology · 2025Article
- A closer look: pediatric neuroimaging at 7T.Pediatric radiology · 2025Review
- Adaptable, wearable, and stretchable coils: A review.Magnetic resonance in medicine · 2025Review
- A New Combination of Radio-Frequency Coil Configurations Using High-Permittivity Materials and Inductively Coupled Structures for Ultrahigh-Field Magnetic Resonance Imaging.Sensors (Basel, Switzerland) · 2022Article
- Evaluation of specific absorption rate and heating in children exposed to a 7T MRI head coil.Magnetic resonance in medicine · 2022Article
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Authors and funding
4 authors.
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Abstract
purposeTo evaluate specific absorption rate (SAR) and temperature distributions resulting from pediatric exposure to a 7T head coil.
methodsExposure from a 297-MHz birdcage head transmit coil (CP mode single-channel transmission) was simulated in several child models (ages 3-14, mass 13.9-50.4 kg) and one adult, using time-domain electromagnetic and thermal solvers. Position variability, age-related changes in dielectric properties, and differences in thermoregulation were also considered.
resultsAge-adjusted dielectric properties had little effect in this population. Head average SAR (hdSAR) was the limiting factor for all models centered in the coil. The value of hdSAR (normalized to net power) was found to decrease linearly with increasing mass (R
conclusionsChildren experienced higher SAR than adults for the 297-MHz head transmit coil examined in this work. Thermal simulations suggest that core temperature changes could occur in smaller subjects, although experimental data are needed for validation.
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