A method for collision detection of a radiotherapy equipment includes determining a collision-prone position of a target to be detected; and determining whether the target to be detected having a risk of collision with the radiotherapy equipment according to collision risk analysis data that is capable for reflecting a magnitude relationship between a first distance and a second distance. The first distance is a distance from the collision-prone position to a reference position of the radiotherapy equipment, and the second distance is a minimum distance between a target component of the radiotherapy equipment and the reference position. A distance between the reference position and the target component of the radiotherapy equipment is relatively constant when the target component of the radiotherapy equipment rotates around a rotation axis.

A computed tomography device includes, in an embodiment, a gantry including a tunnel-shaped opening, an examination object being introducible into the tunnel-shaped opening for an examination via the computed tomography device; and a radiation protection apparatus to cover the tunnel-shaped opening, the radiation protection apparatus including a first connector and the gantry includes a second connector. In an embodiment, a detachable connection is formable via the first connector and the second connector, to counteract removal of the radiation protection apparatus from the tunnel-shaped opening.

An anti-collision apparatus comprises an anti-collision cover and a detection portion. The detection portion is provided outside the bottom end of the anti-collision cover along the axial direction of the anti-collision cover, and an axial clearance is provided between the detection portion and the anti-collision cover. The detection portion is configured to collect a trigger signal and output a collision signal according to the trigger signal; the trigger signal comprises a mechanical trigger signal or an electromagnetic trigger signal generated in the case that the axial clearance is reduced to a target value.

A medical safety-system for dynamic 3D healthcare environments, a medical examination system with motorized equipment, an image acquisition arrangement, and a method for providing safe movements in dynamic 3D healthcare environments. The medical safety-system for dynamic 3D healthcare environments includes a detection system, a processing unit, and an interface unit. The detection system includes at least one sensor arrangement to provide depth information of at least a part of an observed scene. The processing unit includes a correlation unit to assign the depth information and a generation unit to generate a 3D free space model to provide the 3D free space model.

According to one embodiment, the X-ray diagnosis apparatus includes an X-ray detector, X-ray diaphragm apparatus, and processing circuitry controlling the X-ray diaphragm apparatus to shield the X-rays from passing through a X-ray filter outside an aperture region or a partial region during a transition from first fluoroscopy employing an X-ray filter to second fluoroscopy employing diaphragm blades, generating a first and second fluoroscopic image during the first and second fluoroscopy respectively, generating a composite image during the second fluoroscopy by combining a non-ROI image of the first fluoroscopic image and a ROI image of the second fluoroscopic image, and displaying the first fluoroscopic image and the composite image on the display during the first and second fluoroscopy respectively.

A new and improved anatomical imaging system which includes a new and improved movement system, wherein the movement system comprises an omnidirectional powered drive unit and wherein the movement system can substantially eliminate lateral walk (or drift) over the complete stroke of a scan, even when the floor includes substantial irregularities, whereby to improve the accuracy of the scan results and avoid unintentional engagement of the anatomical imaging system with the bed or gurney which is supporting the patient. The present invention also comprises the provision and use of Liddiard wheels.

A method is for actuating a medical imaging device including a radiation source, embodied during a rotational movement around an axis of rotation to irradiate an irradiation region from a plurality of angular positions. In an embodiment, the method includes capturing an object position of a moving object relative to the irradiation region. The Method further includes actuating the medical imaging device based upon the captured object position of the moving object, such that the intensity of the radiation emitted by the radiation source for a first partial number of the plurality of angular positions in a first angular range round the axis of rotation is reduced relative to a second partial number of the plurality of angular positions in a second angular range around the axis of rotation, he captured object position being included in the first angular range.

A computed tomography (CT) machine system and a state monitoring method are described. The CT machine system comprises a drum-shaped component, a 3D camera, and a control system. The drum-shaped component comprises a cylindrical body, with the center of the cylindrical body being provided with a hollow portion which is rotationally symmetrical about the central axis of the cylindrical body, a rotating component disposed in the cylindrical body rotating about the central axis, a plurality of trigger marks arranged in the rotating component, and a window provided in the cylindrical body. The 3D camera generates image data that is transferred to the control system, from which the control system determines state data of the CT machine. The 3D camera captures an image of the trigger marks through the window to generate marked image data.

A high-pass radiation shield for using during radiological examinations is provided. The shield comprises: a first sublayer having a first radiation attenuation material of atomic number from 21 to 30; and a second sublayer having a second radiation attenuation material of atomic number 56 or greater. The weight of the second radiation attenuation material is not greater than the weight of the first radiation attenuation material. The shield is configured for placement on a patient's body over the entire or a portion of the field of view (FOV) for protection of the organs, especially radiosensitive organs against radiation dangers emitted by an X-ray tube without degrading image quality.

In some embodiments, a safety system for a close range scanning machine inhibits collision of moving detector heads with a patient or other object. For example a proximity sensor and/or a collision sensor may guide to bring the head close enough to a patient and/or warn to prevent a collisions and or reduce impact. Parts that are in that are in the FOV of the detector may be transparent to the detected signal and/or uniformly affect the signal, facilitating identification of the source of the signal from the detector. In some embodiments, a dynamic motion restrictor is set during scanning according to the desired scanning position and/or the position of the patient. In some embodiments, a motion restrictor acts to prevent unbalanced motions.