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Pediatric Neuroimaging: Focus on Dose Reduction

Time:

08:30 AM – 10:00 AM

Author:

Michael F. McNitt-Gray, PhD, Charles Mack Glasier, MD, and Blaise Vincent Jones, MD

Code: RC805

Objective:

This session has three sections:

First is Physics of Dose Reduction: Calculations, Conversions, and New Post-processing Methods, in which attendees will understand how radiation dose is currently measured in . They will also understand the relationship between these indices and actual patient dose (dose to skin, eye lens, brain and thyroid). This section offers better understanding of some simple dose reduction strategies (reducing mAs and/or kVp) and more advanced methods (e.g. tube current modulation, adaptive collimation and iterative reconstructions). The section discusses the impact of these dose reduction strategies on image quality.

The second section is “Dose Control” in Pediatric Neurologic CT: Strategies and Protocols. It discusses the basic principles of dose standardization and reduction in pediatric neuro CT. Attendees will learn how to implement a quality control program to reduce the risk of inappropriate radiation dose administration in pediatric neuro CT. The third section is CT Dose Reduction in the Clinical Realm: Tactics and Logistics. This section will be on the translation of advanced imaging techniques that have been developed for adults to children, while complying with the principles of ALARA. Attendees will understand the relative strengths and weaknesses of low dose CT and rapid limited MR in the evaluation of children with hydrocephalus. They will also understand the relative strengths and weaknesses of low dose CT and rapid MR in the evaluation of children with acute neurologic deficit (stroke), with insight into how this should influence the implementation of an acute stroke program. This section offers better understanding of the relative strengths and weaknesses of CTA versus MR Angiography in the evaluation of primary cerebrovascular lesions in children.

 

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