Radiation Dosimetry of 3D Rotational Neuroangiography and 2D-DSA in Children

AJNR. American Journal of Neuroradiology
Nicholas ShkumatPrakash Muthusami

Abstract

The benefit-risk assessment concerning radiation use in pediatric neuroangiography requires an extensive understanding of the doses delivered. This work evaluated the effective dose of 3D rotational angiography in a cohort of pediatric patients with complex neurovascular lesions and directly compared it with conventional 2D-biplane DSA. Thirty-three 3D rotational angiography acquisitions were acquired in 24 pediatric patients (mean age, 10.4 years). When clinically indicated, following 2D-biplane DSA, 3D rotational angiography was performed with 1 of 3 technical protocols (2 subtracted, 1 unsubtracted). The protocols consisted of 1 factory and 2 customized techniques, with images subsequently reconstructed into CT volumes for clinical management. Raw projections and quantitative dose metrics were evaluated, and the effective dose was calculated. All 3D rotational angiography acquisitions were of diagnostic quality and assisted in patient management. The mean effective doses were 0.5, 0.12, and 0.06 mSv for the factory-subtracted, customized-subtracted, and customized-unsubtracted protocols, respectively. The mean effective dose for 2D-biplane DSA was 0.9 mSv. A direct intraprocedural comparison between 3D and 2D acquisitions in...Continue Reading

References

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Citations

Jun 30, 2019·AJNR. American Journal of Neuroradiology·A JhaveriP Muthusami
Jul 8, 2019·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Grace M Y MaPrakash Muthusami
Jun 20, 2020·Pediatric Rheumatology Online Journal·Racha ChamlatiDimitri A Parra
Sep 29, 2020·Interventional Neuroradiology : Journal of Peritherapeutic Neuroradiology, Surgical Procedures and Related Neurosciences·Jay F YuDaniel L Cooke

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