ROI PAINTING

摘要

An apparatus (A) and a method for controlling collimation operation of a collimator (COL) in an x-ray imager (100) during an intervention carried out by an operator (R). A first medical device (GW) is made to progress through a patient (PAT) in an exploratory phase of the intervention. A path is recorded in a scout image (CI; CI1-CI4) formed from footprints (GWF) of the first device (GW) as recorded in a sequence of projection images (F; FI-F4) acquired by imager (100) during the exploratory phase. Apparatus (A) uses the path in the scout image (CI; CI1-CI4) to control collimation of the x-ray beam during a subsequent delivery phase where a second medical device (BC) is made to progress through patient (PAT), said second device (BC) following the first device (GW) substantially along the same path.

主权项

1. An apparatus for controlling x-ray beam collimation, comprising:
an input port configured to receive a scout projection image of a first device path, said projection image formed from a sequence of projection images (F, F1-4) acquired previously during progression of said first device through a body, said device tracing out said path whilst progressing; a collimation controller configured to use the scout image to control operation of an x-ray imager collimator to acquire an x-ray image of the object, the collimator, when so controlled, collimating x-ray imager x-ray beam according to the path recorded in the scout image whilst a second device progresses through the body to follow said first device.