CT-LESS FREE BREATHING IMAGE CONTOUR FOR PLANNING RADIATION TREATMENT

Abstract

Disclosed is a method of transforming a first medical image dataset describing an anatomical body part of a patient into a reference system of a second medical image dataset describing the anatomical body part. The method encompasses taking images of a surface of an anatomical body part during both free breathing and deep inspiration breath-hold using a surface camera as well as a tomography such as a CT of the anatomical body part during deep inspiration breath-hold. Contours are extracted from the surface camera images and the tomography representing a contour of the anatomical body part such as a surface of the patient's thorax. The contour extracted from the camera image taken during free breathing is transformed into a coordinate system used for defining positions in the tomograph (i.e. a coordinate system used by the tomograph used for generating the tomography) by fusing the contour extracted from the tomography with the contour extracted from the deep inspiration breath-hold camera image and applying the transformation representing the fusion result to the camera image taken during free breathing.

Inventors

BERLINGER, KAJETAN
KAISER, Hagen

Assignees

Brainlab SE

Dates

Publication Date: 20260506
Application Date: 20211217