Dual bolus intravenous contrast injection technique for multiregion paediatric body CT

Abstract

• In children, optimal vascular and parenchymal enhancement in multi-region CT is challenging. • A dual bolus contrast technique offers concordant arterial and portal venous opacification. • Adaptation to patient size is achieved by stratification into five weight categories. • Dose penalties of 'overlap' and 'dual phase' imaging techniques can be avoided.

In Reply

“…Kardos [1] also suggested a dual bolus injection technique with single acquisition, which had been reported by Thomas et al [4]. We also considered the dual bolus injection technique which might be useful for patients with the Fontan circuit as described in Discussion of our paper [3].…”

CT im Kindes- und Jugendalter

“…B. die Kontrastmittelinjektion mittels eines Splitbolus bewährt. Dies ermöglicht die Akquisition einer arteriellen und (portal-)venösen Phase in einer Spirale [7]. Ebenfalls sollten i. d. R. feste Delay-Zeiten verwendet und das Bolustracking oder gar ein Testbolus nur in speziellen Einzelfällen eingesetzt werden.…”

CT Radiation Dose Management: A Comprehensive Optimization Process for Improving Patient Safety

“…Parakh et al decision software solutions (18,19). After a rigorous review of justification of each scan, radiologists should ensure that patients undergo scanning that is in accordance with the ALARA (as low as reasonably achievable) principle, which is practically done by optimizing each examination through proper patient centering, judicious use of intravenous contrast material, and selecting suitable technical parameters (20)(21)(22). CT manufacturers have also played a critical role by focusing on the development of effective technologies for dose reduction (automatic tube current modulation, iterative reconstruction techniques, dynamic collimation, and dose-efficient detectors), while preserving diagnostic accuracy and image quality (23)(24)(25)(26)(27)(28).…”