Abstract: A patient monitor is disclosed for detecting patient movement or abnormal breathing. Images of a patient are obtained by a stereoscopic camera. These images are then processed by a 3D position determination module which determines measurements indicative of positions of at least part of a patient. The obtained measurements are then passed to a model generation module which generates a breathing model of the variation in position of the at least part of a patient during a breathing cycle. Subsequently abnormal breathing or patient movement can be detected by processing further images obtained by the stereoscopic camera to determine more measurements indicative of positions of at least part of a patient. These measurements are then compared with a stored breathing model by a comparison module.

Abstract: Three camera rigs (1, 2, 3) are connected by wiring (4) to a computer (5). The computer (5) is also connected to a treatment apparatus (6). A mechanical couch (7) is provided as part of the treatment apparatus (6) such that under the control of the computer (5) the relative positions of the mechanical couch (7) and the treatment apparatus (6) may be varied. The camera rigs (1, 2, 3) obtain video images of a patient (8) lying on the mechanical couch (7) the computer (5) processes these images to generate a three-dimensional model of the surface of the patient which is utilised to position the patient relative to the treatment apparatus (6).

Abstract: An image processing system (1-5) is provided which obtains images of a patient (8) from multiple view points and which then generates positioning instructions for a mechanical couch (7) to vary the position of a patient. A number of techniques are disclosed in order to calibrate the image processing system so as to enable the image processing system to identify the iso center of radiation beams generated by a treatment apparatus (6). Techniques for processing generated 3 dimensional models to monitor a patient's breathing are also disclosed.

Abstract: An image processing system (1-5) is provided which obtains images of a patient (8) from multiple view points and which then generates positioning instructions for a mechanical couch (7) to vary the position of a patient. A number of techniques are disclosed in order to calibrate the image processing system so as to enable the image processing system to identify the iso centre of radiation beams generated by a treatment apparatus (6). Techniques for processing generated 3 dimensional models to monitor a patient's breathing are also disclosed.