Search International and National Patent Collections

1. (WO2015044065) ALIGNMENT OF THE COORDINATE SYSTEMS OF EXTERNAL BEAM RADIOTHERAPY AMD MAGNETIC RESONANCE IMAGING SYSTEMS

Pub. No.:    WO/2015/044065    International Application No.:    PCT/EP2014/070079
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Tue Sep 23 01:59:59 CEST 2014
IPC: A61N 5/10
A61B 5/055
Applicants: KONINKLIJKE PHILIPS N.V.
Inventors: UHLEMANN, Falk
OVERWEG, Johannes Adrianus
Title: ALIGNMENT OF THE COORDINATE SYSTEMS OF EXTERNAL BEAM RADIOTHERAPY AMD MAGNETIC RESONANCE IMAGING SYSTEMS
Abstract:
The invention provides for a medical instrument (200, 300, 400, 500, 600, 700) comprising a magnetic resonance imaging system (204) operable for acquiring magnetic resonance data (266) from a subject (236) within an imaging zone (232) and an external beam radiotherapy system (202) operable for irradiating a target zone (238) within the imaging zone. The medical instrument further has a radiation beam generation system (208, 302, 302', 302") operable for generating a radiation beam (242, 304, 304', 304") and a radiation beam detection system (243, 502, 502') operable for acquiring radiation beam detection data (270) descriptive of the radiation beam. Instructions cause a processor (248) controlling the instrument to receive (100) planning data (260) descriptive of a spatially dependent radiation dose and generate (102) external beam radiotherapy control commands (264) using the radiation dose. The instructions causes the processor to repeatedly: control (106) the external beam radiotherapy system to irradiate the target zone using the external beam radiotherapy system control commands; generate (108) the radiation beams using the radiation beam generation system; measure (110) the radiation beam detection data using the radiation beam detection system; acquire (112) the magnetic resonance imaging data using the magnetic resonance imaging system, generate (114) a magnetic resonance image (268) using the magnetic resonance image data, determine (116) a registration (274) of the magnetic resonance image to the radiation beam detection data; calculate (118) a mapping (276) using the registration; and modify the external beam radiotherapy system control commands using the mapping.