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1. (WO2018087049) DOSE REDUCTION IN DYNAMIC RADIOGRAPHY

Pub. No.:    WO/2018/087049    International Application No.:    PCT/EP2017/078373
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Wed Nov 08 00:59:59 CET 2017
IPC: A61B 6/00
A61B 6/03
Applicants: KONINKLIJKE PHILIPS N.V.
Inventors: KABUS, Sven
Title: DOSE REDUCTION IN DYNAMIC RADIOGRAPHY
Abstract:
Present invention relates to devices and methods for controlling radiation emission in dynamic radiographic imaging. A radiation emission controller is disclosed that comprises an input port (3) for receiving an input signal from a respiration phase tracking device, an output port (4) for transmitting an output signal to a radiographic imaging device, and a processor (2). The processor is adapted for amplitude binning the input signal into a plurality of bins, determining, for each bin, a value representative of the dwell time in each bin over at least one respiration cycle, and determining, for each bin, a sparse sampling value that is based on the value representative of the dwell time. The processor is further adapted for determining a present respiration bin corresponding to a present input signal value received from the respiration phase tracking device, and generating the output signal in response to the present bin such that the output signal indicates either a normal dose or a reduced dose condition in accordance with the sparse sampling value for that bin.