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In this feasibility study, an ultra-low-dose pediatric chest PCCT protocol was optimized to Sn100 kVp, 2 mAs, pitch 1.5, achieving a phantom effective dose of 14 µSv. In clinical use, the median total effective dose was 11.6 µSv, close to the 8.2 µSv median dose of a single chest radiograph. The protocol was applied in 24…
In 58 infants <10 kg, cardiac PCCT at 70 kV and 120 kV provided comparable image quality, with similar aortic CNR and median subjective image-quality scores of 5/5 in both groups. 70 kV reduced radiation dose by almost 50%, with CTDI decreasing from 0.25 mGy at 120 kV to 0.13 mGy at 70 kV (P<0.001). The key trade-off is…
This multicenter retrospective study evaluated 6,464 PCCT examinations in 4,772 pediatric patients across three French institutions and provides practical acquisition/reconstruction protocols across ten body regions. The cohort had a mean age of 7.9 ± 5.5 years (4 days–17.9 years); nearly one-third of examinations involved…
PCCT achieved lower radiation dose and higher signal-to-noise ratio (SNR) than energy-integrating CT across pediatric head phantom models, demonstrating improved dose efficiency for neuroimaging. The greatest radiation dose reduction was observed in the 10-year-old phantom (9% lower CTDIvol at clinically relevant IQL 200),…
For routine pediatric abdomen PCCT, start with Quantum mode at 70 kV and low-keV VMI rather than defaulting to QuantumPlus. Based on their phantom work, the authors favor the lowest tube voltage as the ALARA-oriented starting point, and for their standard protocol they selected 70 kV Quantum mode with VMI 53 keV. Optimize…
Prof. Jan Baxa, MD, PhD Department of imaging methods, University Hospital Pilsen and Medical Faculty of Charles University, Pilsen, Czech Republic May 28, 2025 Download pdf History A 5-month-old baby, suffering from severe hypertension, was presented to the hospital. Ultrasound examination showed bilateral congenital…
Jan Baxa, MD, Ph.D. Department of imaging methods, University Hospital Pilsen and Medical Faculty of Charles University, Pilsen, Czech Republic December 21, 2023 Download pdf History A 9-year-old boy, suffering from frequent urination, weak stream and enuresis, was presented to the hospital for a check-up. Ultrasonography…
Hunor Sükösd, MD; Éva Juhász, RT Medical Imaging Centre, Semmelweis University, Budapest, Hungary November 13, 2023 Download pdf History A 7-year-old girl suffering from bilateral progressive conductive hearing loss, worse on the left side, was presented to the hospital. Physical examination was unremarkable on both…
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