An N-M tomography system comprising: a carrier for the subject of an examination procedure; a plurality of detector heads; a carrier for the detector heads; and a detector positioning arrangement operable to position the detector heads during performance of a scan without interference or collision between adjacent detector heads to establish a variable bore size and configuration for the examination. Additionally, collimated detectors providing variable spatial resolution for SPECT imaging and which can also be used for PET imaging, whereby one set of detectors can be selectably used for either modality, or for both simultaneously.

Disclosed is a C-shaped arm X-ray apparatus, comprising a C-shaped arm translation assembly (1), a support column (2), a base (3), a balancing weight (4) and an adjusting apparatus. One end of the support column (2) is connected to the base (3), and the other end of the support column is slidably connected to the C-shaped arm translation assembly (1). The balancing weight (4) is in sliding connection with the base (3). The adjusting apparatus is connected to the balancing weight (4), and when the C-shaped arm translation assembly (1) moves in a first direction, the adjusting apparatus enables the balancing weight (4) to move by a preset distance in the direction opposite to the first direction such that the gravity center of the C-shaped arm X-ray apparatus can be maintained at a preset position. The stability of the C-shaped arm X-ray apparatus can be guaranteed by adjusting the position of the balancing weight (4) by means of the adjusting apparatus.

A radiography apparatus includes: an irradiation unit that emits radiation; an arm that can hold the irradiation unit and an image receiving unit in a facing posture; a first rotation mechanism that rotates the arm; and a friction mechanism that is switchable between a first state in which a frictional force is applied to the arm in a direction opposite to a direction in which the arm is rotated and a second state in which the frictional force applied to the arm is less than that in the first state.

A collision monitoring apparatus can include a camera to acquire a video image of surroundings of at least one target protection component on the C-arm X-ray machine system; an image processor to determine a scene of the surroundings of the at least one target protection component according to the video image; and a controller to control a C-arm X-ray machine system to stop moving or slow down when it is determined that a possible collision exists according to the scene of the surroundings of the at least one target protection component. Advantageously the apparatus effectively prevents patients, operators, patient examination beds and other obstacles from suffering a serious collision with the C-arm itself.

A gantry for a computed tomography device has a support structure, a pivot bearing, a rotating frame, a first braking resistor configured to electromotively brake a rotational movement of the rotating frame, and a heat conductor configured to dissipate heat from the first braking resistor. A heat conductor and a pressure duct wall are interconnected to form a heat-conductor-to-pressure-duct-wall connection that is detachable, form-fitting, planar, and thermally conductive. The heat is transferrable from the first braking resistor to the airflow via the heat conductor, the heat-conductor-to-pressure-duct-wall connection and the pressure duct wall.

A device for implementing a latching function of an adjustment axis of an X-ray C-arm comprises at least two magnetic bodies and two components of the adjustment axis that are movable relative to one another. A first component of the two relatively movable components of the adjustment axis is operatively connected to a magnetic body of the at least two magnetic bodies. A second component of the components of the adjustment axis movable relative to one another is a component of the X-ray C-arm system and the second magnetic of the at least two magnetic bodies is operatively connected to this component.

An example rotational joint assembly for a robotic medical system, the rotational joint assembly comprising at least one arm segment and a rotational joint provided at one end of the arm segment. The rotational joint is to allow the arm segment to rotate about a rotational axis. The rotational joint comprising a brake to lock rotation of the arm segment at the rotational joint and an actuator to selectively engage or disengage the brake. The actuator comprising a cam having two stable regions separated by two transition regions, the two stable regions comprising a first stable region corresponding to engagement of the brake and a second stable region corresponding to disengagement of the brake.

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.

An N-M tomography system comprising: a carrier for the subject of an examination procedure; a plurality of detector heads; a carrier for the detector heads; and a detector positioning arrangement operable to position the detector heads during performance of a scan without interference or collision between adjacent detector heads to establish a variable bore size and configuration for the examination. Additionally, collimated detectors providing variable spatial resolution for SPECT imaging and which can also be used for PET imaging, whereby one set of detectors can be selectably used for either modality, or for both simultaneously.

An imaging apparatus includes a patient table with a gurney and a base. The gurney can slide between two extreme positions, an electrically supplied motoreducer controlled by a control unit causing the table to slide and having a lock/unlock system of the sliding that is mechanical, independent from the electrical supply, and manually controlled by a grabbing organ actuated by a human operator. The patient table may be provided together with a gantry having a housing transparent to light for at least part of its extension, and a control unit of the radiographic apparatus. The housing or a part thereof is associated with a source of light, and the control unit, when the apparatus is electrically supplied, and/or other status conditions are determined by a status sensor, causes the light source to be illuminated and the housing to light up in its translucent parts signalling the status condition.